阅读说明：本技术 一种阴极保护智能化控制方法及系统 (Cathode protection intelligent control method and system ) 是由 夏伟添 于 2020-06-05 设计创作，主要内容包括：本发明公开了一种阴极保护智能化控制方法及系统,所述方法包括：采集装置采集阴极保护点的阴极保护信号,将所述阴极保护信号发送至智能阴极保护现场工控机；智能阴极保护现场工控机将所述阴极保护信号进行数模转换,得到阴极保护数据,并将所述阴极保护数据发送至服务器；服务器对数据进行分析,考虑了自腐蚀点数据、电阻率、温度、湿度、通电电位、断电电位、保护/腐蚀电流密度、交流干扰电流密度、交流干扰电流频率之间的相互影响,从而基于上述方法得到的故障信息能够准确表征故障的点位、原因,进而提高了阴极保护智能化控制方法及系统的智能化、准确性。(The invention discloses a cathode protection intelligent control method and a system, wherein the method comprises the following steps: the collecting device collects a cathodic protection signal of a cathodic protection point and sends the cathodic protection signal to an intelligent cathodic protection field industrial personal computer; the intelligent cathode protection field industrial personal computer performs digital-to-analog conversion on the cathode protection signal to obtain cathode protection data and sends the cathode protection data to a server; the server analyzes the data, and considers the mutual influence among self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency, so that the fault information obtained based on the method can accurately represent the point position and reason of the fault, and the intellectualization and accuracy of the cathode protection intelligent control method and system are improved.)

1. An intelligent control method for cathodic protection, characterized in that the method comprises:

the collecting device collects a cathodic protection signal of a cathodic protection point and sends the cathodic protection signal to an intelligent cathodic protection field industrial personal computer;

the intelligent cathode protection field industrial personal computer performs digital-to-analog conversion on the cathode protection signal to obtain cathode protection data, and sends the cathode protection data to an intelligent cathode protection server; the cathodic protection data comprises self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency;

the intelligent cathode protection server performs Fourier transform filtering on the self-corrosion point data, resistivity, temperature, humidity, energization potential, outage potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency to obtain filtered self-corrosion point data, resistivity, temperature, humidity, energization potential, outage potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency;

the intelligent cathode protection server carries out fault monitoring analysis according to the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency before filtering and the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency after filtering to obtain fault information.

2. The method of claim 1, wherein the fault monitoring analysis is performed according to the self-corrosion point data before filtering, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating interference current frequency, and the self-corrosion point data after filtering, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating interference current density, and the alternating interference current frequency to obtain fault information, and the fault information comprises:

obtaining correlation coefficients among filtered self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency, wherein the correlation coefficients represent the degree of mutual interference among the filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency;

adjusting the correlation coefficient according to self-corrosion data difference, resistance difference, temperature difference, humidity difference, power-on difference, power-off difference, protection/corrosion current density difference, alternating current interference current density difference and alternating current interference current frequency difference; wherein, the self-corrosion data difference, the resistance difference, the temperature difference, the humidity difference, the power-on difference, the power-off difference, the protection/corrosion current density difference, the alternating current interference current density difference and the alternating current interference current frequency difference are respectively the difference value between the self-corrosion point data before filtering and the self-corrosion point data after filtering, the method comprises the steps of filtering a protection/corrosion current of the power system, wherein the protection/corrosion current comprises the following steps of (1) a difference value between resistivity before filtering and resistivity after filtering, a difference value between temperature before filtering and temperature after filtering, a difference value between humidity before filtering and humidity after filtering, a difference value between a power-on potential before filtering and a power-on potential after filtering, a difference value between a power-off potential before filtering and a power-off potential after filtering, a difference value between protection/corrosion current density before filtering and protection/corrosion current density after filtering, a difference value between alternating current interference current density before filtering and alternating current interference current density after filtering, and a difference value between alternating current interference current frequency before filtering and alternating current interference;

determining fault point positions according to self-corrosion data difference, resistance difference, temperature difference, humidity difference, power-on difference, power-off difference, protection/corrosion current density difference, alternating current interference current frequency difference and adjusted correlation coefficients;

and obtaining filtered cathodic protection data of the fault point location, and monitoring the filtered cathodic protection data of the fault point location as an event to obtain a fault reason of the fault point location.

3. The method of claim 2, wherein obtaining correlation coefficients between filtered self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, ac interference current frequency comprises:

calculating the sine value of the quotient of the filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency, and taking the sine value as the correlation coefficient.

4. The method of claim 3, wherein said adjusting said correlation coefficients according to self-corrosion data differences, resistivity differences, temperature differences, humidity differences, power-on differences, power-off differences, protection/corrosion current density differences, AC interference current frequency differences comprises:

obtaining a sum of a cosine value of the self-corrosion data difference and a sine value of the resistivity difference;

obtaining a product of a correlation coefficient between a cosine value of the self-corrosion data difference and the resistivity difference and the sum;

and adding 1 to the product to be used as a correlation coefficient between the cosine value of the adjusted self-corrosion data difference and the resistance difference.

5. The method according to claim 1, wherein the collecting device collects a cathodic protection signal of a cathodic protection point, in particular:

the acquisition device acquires the cathodic protection signal of the cathodic protection point at a sampling frequency of 250 data per second.

6. The method of claim 1, wherein after obtaining fault information, the method further comprises:

and obtaining a construction scheme corresponding to the fault information from a database.

7. An intelligent control system for cathodic protection, said system comprising: the system comprises an intelligent cathode protection server, an intelligent cathode protection field industrial personal computer, an intelligent potentiostat, a test acquisition device and a cathode ground bed resistance detector;

the intelligent potentiostat is used for collecting a field pre-control potential, a field actual potential, a field voltage output and a field current output, and sending the field pre-control potential, the field actual potential, the field voltage output and the field current output to the intelligent cathode protection field industrial personal computer;

the test acquisition device is used for acquiring signals of self-corrosion potential, soil resistivity, soil temperature, soil humidity, energization potential, outage potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency and transmitting the signals of the self-corrosion potential, the soil resistivity, the soil temperature, the soil humidity, the energization potential, the outage potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency to the intelligent cathode protection field industrial personal computer;

the cathode ground bed resistance detector is used for collecting ground bed ground resistance and sending the ground bed ground resistance to the intelligent cathode protection field industrial personal computer;

the intelligent cathodic protection field industrial personal computer performs digital-to-analog conversion on the signals of the self-corrosion potential, the soil resistivity, the soil temperature, the soil humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency to obtain cathodic protection data, and sends the cathodic protection data to a server; the cathodic protection data comprises self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency;

the intelligent cathode protection server performs Fourier transform filtering on the self-corrosion point data, resistivity, temperature, humidity, energization potential, outage potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency to obtain filtered self-corrosion point data, resistivity, temperature, humidity, energization potential, outage potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency;

the intelligent cathode protection server carries out fault monitoring analysis according to the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency before filtering and the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency after filtering to obtain fault information.

8. The system of claim 7, wherein the fault monitoring analysis is performed according to the self-corrosion point data before filtering, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating interference current frequency, and the self-corrosion point data after filtering, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating interference current density, and the alternating interference current frequency to obtain the fault information, and comprises:

obtaining correlation coefficients among filtered self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency, wherein the correlation coefficients represent the degree of mutual interference among the filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency;

adjusting the correlation coefficient according to self-corrosion data difference, resistance difference, temperature difference, humidity difference, power-on difference, power-off difference, protection/corrosion current density difference, alternating current interference current density difference and alternating current interference current frequency difference; wherein, the self-corrosion data difference, the resistance difference, the temperature difference, the humidity difference, the power-on difference, the power-off difference, the protection/corrosion current density difference, the alternating current interference current density difference and the alternating current interference current frequency difference are respectively the difference value between the self-corrosion point data before filtering and the self-corrosion point data after filtering, the method comprises the steps of filtering a protection/corrosion current of the power system, wherein the protection/corrosion current comprises the following steps of (1) a difference value between resistivity before filtering and resistivity after filtering, a difference value between temperature before filtering and temperature after filtering, a difference value between humidity before filtering and humidity after filtering, a difference value between a power-on potential before filtering and a power-on potential after filtering, a difference value between a power-off potential before filtering and a power-off potential after filtering, a difference value between protection/corrosion current density before filtering and protection/corrosion current density after filtering, a difference value between alternating current interference current density before filtering and alternating current interference current density after filtering, and a difference value between alternating current interference current frequency before filtering and alternating current interference;

determining fault point positions according to self-corrosion data difference, resistance difference, temperature difference, humidity difference, power-on difference, power-off difference, protection/corrosion current density difference, alternating current interference current frequency difference and adjusted correlation coefficients;

and obtaining filtered cathodic protection data of the fault point location, and monitoring the filtered cathodic protection data of the fault point location as an event to obtain a fault reason of the fault point location.

9. The system of claim 8, wherein obtaining correlation coefficients between filtered self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, ac interference current frequency comprises:

calculating the sine value of the quotient of the filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency, and taking the sine value as the correlation coefficient.

10. The system of claim 9, wherein said adjusting said correlation coefficients according to self-corrosion data differences, resistivity differences, temperature differences, humidity differences, power-on differences, power-off differences, protection/corrosion current density differences, ac interference current frequency differences comprises:

obtaining a sum of a cosine value of the self-corrosion data difference and a sine value of the resistivity difference;

obtaining a product of a correlation coefficient between a cosine value of the self-corrosion data difference and the resistivity difference and the sum;

and adding 1 to the product to be used as a correlation coefficient between the cosine value of the adjusted self-corrosion data difference and the resistance difference.

Technical Field

The invention relates to the technical field of cathode protection, in particular to an intelligent control method and system for cathode protection.

Background

Since the 90 s, the cathode protection technology is mature in China. In about 2000 years, the technical scheme of mainly applying current protection and secondarily protecting shallow sacrificial anodes is adopted, and large-scale application is successively developed in long-distance pipelines, oil field stations, storage tanks and the like. Since 2007, data remote transmission technology using GPS has gradually started to develop, and data remote transmission technology based on the internet of things has been applied on a larger scale at present. In the prior art applications, there are currently mainly the following problems: 1. the database is managed by taking data as an object, only a single piece of data is generally collected and is influenced by construction uncertainty factors and field uncertainty factors, and a plurality of collected electric signals are not in a reasonable range, so that the reason why the electric signals are abnormal is determined; 2. the electric signal acquisition has fixed frequency, whether the data are normal can be judged only according to the range of normal data, and the fault of the electric signal data analysis equipment cannot be analyzed; 3. since the first two (1, 2) can not obtain accurate answers, accurate alarm can not be carried out, and a user can frequently swipe alarm data or has no alarm function in the using process; resulting in 4, automatic talks about potentiostat regulation. Until now, there is basically no solution in the field of cathodic protection intelligent control by the various companies in the industry.

Therefore, an intelligent and accurate cathode protection intelligent control method is needed.

Disclosure of Invention

The present invention provides an intelligent control method and system for cathodic protection, which are used to solve the above problems in the prior art.

In a first aspect, an embodiment of the present invention provides an intelligent control method for cathodic protection, where the method includes:

the collecting device collects a cathodic protection signal of a cathodic protection point and sends the cathodic protection signal to an intelligent cathodic protection field industrial personal computer;

the intelligent cathode protection field industrial personal computer performs digital-to-analog conversion on the cathode protection signal to obtain cathode protection data and sends the cathode protection data to a server; the cathodic protection data comprises self-corrosion point data, resistivity, temperature, humidity, energization potential, outage potential, protection/corrosion current density, alternating interference current density and alternating interference current frequency;

the intelligent cathode protection server performs Fourier transform filtering on the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency to obtain the filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency;

the intelligent cathode protection server carries out fault monitoring analysis according to the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency before filtering, and the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency after filtering, so that fault information is obtained.

Optionally, the monitoring and analyzing the fault according to the self-corrosion point data before filtering, the resistivity, the temperature, the humidity, the energization potential, the power-off potential, the protection/corrosion current density, the alternating current interference current frequency, the self-corrosion point data after filtering, the resistivity, the temperature, the humidity, the energization potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density, and the alternating current interference current frequency to obtain the fault information includes:

obtaining correlation coefficients among filtered self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency, wherein the correlation coefficients represent the degree of mutual interference among the filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency;

adjusting the correlation coefficient according to self-corrosion data difference, resistance difference, temperature difference, humidity difference, power-on difference, power-off difference, protection/corrosion current density difference, alternating current interference current density difference and alternating current interference current frequency difference; wherein the self-corrosion data difference, the resistance difference, the temperature difference, the humidity difference, the power-on difference, the power-off difference, the protection/corrosion current density difference, the alternating current interference current density difference and the alternating current interference current frequency difference are respectively a difference value between self-corrosion point data before filtering and self-corrosion point data after filtering, a difference value between the resistivity before filtering and the resistivity after filtering, a difference value between the temperature before filtering and the temperature after filtering, a difference value between the humidity before filtering and the humidity after filtering, a difference value between the power-on potential before filtering and the power-on potential after filtering, a difference value between the protection/corrosion current density before filtering and the protection/corrosion current density after filtering, a difference value between the alternating current density before filtering and the alternating current interference current density after filtering, a protection/corrosion current density difference value after filtering, a protection, The difference value between the alternating current interference current frequency before filtering and the alternating current interference current frequency after filtering;

determining fault point positions according to self-corrosion data difference, resistance difference, temperature difference, humidity difference, power-on difference, power-off difference, protection/corrosion current density difference, alternating current interference current frequency difference and adjusted correlation coefficients;

and obtaining filtered cathode protection data of the fault point location, and monitoring the filtered cathode protection data of the fault point location as an event to obtain a fault reason of the fault point location.

Optionally, obtaining correlation coefficients between the filtered self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density, and alternating current interference current frequency includes:

calculating the sine value of the quotient of the filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency, and taking the sine value as the correlation coefficient.

Optionally, the adjusting the correlation coefficient according to the self-corrosion data difference, the resistivity difference, the temperature difference, the humidity difference, the power-on difference, the power-off difference, the protection/corrosion current density difference, the ac interference current density difference, and the ac interference current frequency difference includes:

obtaining a sum of a cosine value of the self-corrosion data difference and a sine value of the resistivity difference;

obtaining a product of a correlation coefficient between a cosine value of the self-corrosion data difference and the resistivity difference and the sum;

and adding 1 to the product to be used as a correlation coefficient between the cosine value of the adjusted self-corrosion data difference and the resistance difference.

Optionally, the collecting device collects a cathodic protection signal of a cathodic protection point, specifically:

the acquisition device acquires the cathodic protection signal of the cathodic protection point at a sampling frequency of 250 data per second.

Optionally, after obtaining the fault information, the method further includes:

and obtaining a construction scheme corresponding to the fault information from a database.

In a second aspect, an embodiment of the present invention further provides a cathode protection intelligent control system, where the system includes: the system comprises an intelligent cathode protection server, an intelligent cathode protection field industrial personal computer, an intelligent constant potential meter, a test acquisition device and a cathode ground bed resistance detector;

the intelligent potentiostat is used for collecting a field pre-control potential, a field actual potential, a field voltage output and a field current output, and sending the field pre-control potential, the field actual potential, the field voltage output and the field current output to the intelligent cathode protection field industrial personal computer;

the test acquisition device is used for acquiring signals of self-corrosion potential, soil resistivity, soil temperature, soil humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency and transmitting the signals of the self-corrosion potential, the soil resistivity, the soil temperature, the soil humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency to the intelligent cathode protection field industrial personal computer;

the cathode ground bed resistance detector is used for collecting ground bed ground resistance and sending the ground bed ground resistance to the intelligent cathode protection field industrial personal computer;

the intelligent cathodic protection field industrial personal computer performs digital-to-analog conversion on the signals of the self-corrosion potential, the soil resistivity, the soil temperature, the soil humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency to obtain cathodic protection data, and sends the cathodic protection data to a server; the cathodic protection data comprises self-corrosion point data, resistivity, temperature, humidity, energization potential, outage potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency;

the intelligent cathode protection server performs Fourier transform filtering on the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency to obtain the filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency;

the intelligent cathode protection server carries out fault monitoring analysis according to the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency before filtering, and the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency after filtering, so that fault information is obtained.

Optionally, the monitoring and analyzing the fault according to the self-corrosion point data before filtering, the resistivity, the temperature, the humidity, the energization potential, the power-off potential, the protection/corrosion current density, the alternating current interference current frequency, the self-corrosion point data after filtering, the resistivity, the temperature, the humidity, the energization potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density, and the alternating current interference current frequency to obtain the fault information includes:

obtaining correlation coefficients among filtered self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency, wherein the correlation coefficients represent the degree of mutual interference among the filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency;

adjusting the correlation coefficient according to self-corrosion data difference, resistance difference, temperature difference, humidity difference, power-on difference, power-off difference, protection/corrosion current density difference, alternating current interference current density difference and alternating current interference current frequency difference; wherein the self-corrosion data difference, the resistance difference, the temperature difference, the humidity difference, the power-on difference, the power-off difference, the protection/corrosion current density difference, the alternating current interference current density difference and the alternating current interference current frequency difference are respectively a difference value between self-corrosion point data before filtering and self-corrosion point data after filtering, a difference value between the resistivity before filtering and the resistivity after filtering, a difference value between the temperature before filtering and the temperature after filtering, a difference value between the humidity before filtering and the humidity after filtering, a difference value between the power-on potential before filtering and the power-on potential after filtering, a difference value between the protection/corrosion current density before filtering and the protection/corrosion current density after filtering, a difference value between the alternating current density before filtering and the alternating current interference current density after filtering, a protection/corrosion current density difference value after filtering, a protection, The difference value between the alternating current interference current frequency before filtering and the alternating current interference current frequency after filtering;

determining fault point positions according to self-corrosion data difference, resistance difference, temperature difference, humidity difference, power-on difference, power-off difference, protection/corrosion current density difference, alternating current interference current frequency difference and adjusted correlation coefficients;

and obtaining filtered cathode protection data of the fault point location, and monitoring the filtered cathode protection data of the fault point location as an event to obtain a fault reason of the fault point location.

Optionally, obtaining correlation coefficients between the filtered self-corrosion point data, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density, and alternating current interference current frequency includes:

calculating the sine value of the quotient of the filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency, and taking the sine value as the correlation coefficient.

Optionally, the adjusting the correlation coefficient according to the self-corrosion data difference, the resistivity difference, the temperature difference, the humidity difference, the power-on difference, the power-off difference, the protection/corrosion current density difference, the ac interference current density difference, and the ac interference current frequency difference includes:

obtaining a sum of a cosine value of the self-corrosion data difference and a sine value of the resistivity difference;

obtaining a product of a correlation coefficient between a cosine value of the self-corrosion data difference and the resistivity difference and the sum;

and adding 1 to the product to be used as a correlation coefficient between the cosine value of the adjusted self-corrosion data difference and the resistance difference.

Compared with the prior art, the invention has the following beneficial effects:

the embodiment of the invention provides a cathode protection intelligent control method and a system, wherein the method comprises the following steps: the collecting device collects a cathodic protection signal of a cathodic protection point and sends the cathodic protection signal to an intelligent cathodic protection field industrial personal computer; the intelligent cathode protection field industrial personal computer performs digital-to-analog conversion on the cathode protection signal to obtain cathode protection data and sends the cathode protection data to a server; the cathodic protection data comprises self-corrosion point data, resistivity, temperature, humidity, energizing potential, deenergizing potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency; the intelligent cathode protection server performs Fourier transform filtering on the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency to obtain filtered self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating current interference current density and the alternating current interference current frequency; the intelligent cathode protection server carries out fault monitoring analysis according to the self-corrosion point data before filtering, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current frequency, the self-corrosion point data after filtering, resistivity, temperature, humidity, power-on potential, power-off potential, protection/corrosion current density, alternating current interference current density and alternating current interference current frequency to obtain fault information. The mutual influence among the self-corrosion point data, the resistivity, the temperature, the humidity, the power-on potential, the power-off potential, the protection/corrosion current density, the alternating-current interference current density and the alternating-current interference current frequency is considered, so that the fault information obtained based on the method can accurately represent the point position and the reason of the fault, and the intellectualization and the accuracy of the cathode protection intelligent control method and the system are improved.

Additional features and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings may be obtained based on these drawings without inventive effort.

Fig. 1 is a flowchart of an intelligent control method for cathode protection according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the distribution of the installation positions of the test piles for the regional intelligent cathodic protection provided by the embodiment of the invention.

Fig. 3 is a schematic diagram of the potential distribution of the installation position of the test pile for regional intelligent cathodic protection according to the embodiment of the present invention.

Fig. 4 is a schematic block diagram of an intelligent control system for cathodic protection according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.