Cable joint temperature data acquisition method, monitoring device and storage medium
阅读说明：本技术 一种电缆接头温度数据采集方法、监测装置及存储介质 (Cable joint temperature data acquisition method, monitoring device and storage medium ) 是由 万代 赵邈 齐飞 周恒逸 彭思敏 段绪金 由凯 彭涛 于 2019-12-10 设计创作，主要内容包括：本发明公开了一种电缆接头温度数据采集方法、监测装置及存储介质,其中方法包括以下步骤：S1：以初始温度采样频率获取电缆接头的当前温度；S2：将当前温度与预设的电缆接头温度阈值进行比较,并依据比较结果更改温度采样频率；S3：以更改后的温度采样频率获取电缆接头的温度；并重复步骤S2～S3。通过预设电缆接头温度阈值,然后将获取的电缆接头的当前温度与预设的电缆接头温度阈值进行比较,根据比较结果来更改温度采样频率,实现电缆接头温度采集频率的智能动态调整,既能合理利用系统资源,以提升电缆接头温度监测装置的使用寿命；同时也能实时掌握电缆接头的运行温度,能及时发现潜在安全隐患,减少线路故障概率,降低线路运维成本。(The invention discloses a cable joint temperature data acquisition method, a monitoring device and a storage medium, wherein the method comprises the following steps: s1: acquiring the current temperature of the cable joint at an initial temperature sampling frequency; s2: comparing the current temperature with a preset cable joint temperature threshold value, and changing the temperature sampling frequency according to the comparison result; s3: acquiring the temperature of the cable joint at the changed temperature sampling frequency; and steps S2-S3 are repeated. The temperature sampling frequency is changed according to the comparison result by presetting the temperature threshold of the cable joint and then comparing the acquired current temperature of the cable joint with the preset temperature threshold of the cable joint, so that the intelligent dynamic adjustment of the temperature sampling frequency of the cable joint is realized, system resources can be reasonably utilized, and the service life of the temperature monitoring device of the cable joint is prolonged; meanwhile, the operating temperature of the cable joint can be mastered in real time, potential safety hazards can be found in time, the fault probability of the line is reduced, and the operation and maintenance cost of the line is reduced.)
1. A cable joint temperature data acquisition method is characterized by comprising the following steps:
s1: acquiring the current temperature of the cable joint at an initial temperature sampling frequency;
s2: comparing the current temperature with a preset cable joint temperature threshold value, and changing the temperature sampling frequency according to the comparison result;
s3: acquiring the temperature of the cable joint at the changed temperature sampling frequency; and steps S2-S3 are repeated.
2. The method for collecting temperature data of cable joint according to claim 1, wherein step S2 is performed by comparing the current temperature with a preset temperature threshold of cable joint, and changing the temperature sampling frequency according to the comparison result; the method specifically comprises the following steps:
presetting a temperature thresholds according to the temperature from low to high, corresponding to a +1 temperature intervals, wherein the a +1 temperature intervals correspond to a +1 preset temperature sampling frequencies; wherein a is 1,2, …, n;
and comparing the acquired current temperature with a preset a temperature thresholds, and changing the original temperature sampling frequency into the temperature sampling frequency corresponding to the temperature interval in which the current temperature is positioned.
3. The cable joint temperature data acquisition method according to claim 2, wherein 3 temperature thresholds T are preset according to the temperature from low to highA、TB、TCThe method includes presetting 4 temperature sampling frequencies F1, F2, F3 and F4, wherein the obtained current temperature is Ti；
When T isi≤TAWhen the temperature is measured, changing the current temperature sampling frequency to be F1, and acquiring the temperature of the cable joint according to the temperature sampling frequency F1;
when T isA＜Ti≤TBWhen the temperature is measured, changing the current temperature sampling frequency to be F2, and acquiring the temperature of the cable joint according to the temperature sampling frequency F2;
when T isB＜Ti≤TCWhen the temperature is measured, changing the current temperature sampling frequency to be F3, and acquiring the temperature of the cable joint according to the temperature sampling frequency F3;
when T isi＞TCAnd changing the current temperature sampling frequency to be F4, and acquiring the temperature of the cable joint according to the temperature sampling frequency F4.
4. The cable joint temperature data collection method of claim 3, further comprising:
when T isi＞TCAnd sending out a warning signal of abnormal temperature of the cable joint.
5. The cable joint temperature data collection method according to claim 3 or 4,
temperature threshold TAAt 70 ℃ and a temperature threshold TBAt 80 ℃ and a temperature threshold TCIs 90 ℃;
the temperature sampling frequency F1 is collected once every two hours, and the temperature sampling frequency F2 is collected once every hour; the temperature sampling frequency F3 was acquired every ten minutes, and the temperature sampling frequency F4 was acquired every ten minutes.
6. A cable joint temperature monitoring device is characterized by comprising a temperature data acquisition module, a sampling frequency judgment module, a communication module, a system control module and a power supply module;
the temperature data acquisition module is used for acquiring the current temperature of the cable joint according to the current temperature sampling frequency and sending the acquired current temperature of the cable joint to the sampling frequency judgment module;
the sampling frequency judging module is used for comparing the received current temperature of the cable joint with a pre-loaded cable joint temperature threshold, obtaining a new temperature sampling frequency according to a comparison result and sending the new temperature sampling frequency to the system control module;
the system control module is used for receiving a new temperature sampling frequency, updating the current temperature sampling frequency to the new temperature sampling frequency, and then sending the new temperature sampling frequency to the temperature data acquisition module through the communication module so as to acquire the temperature of the cable joint;
the temperature data acquisition module, the sampling frequency judgment module, the communication module and the system control module are all connected with the power supply module.
7. The cable joint temperature monitoring device according to claim 6, wherein the sampling frequency determination module specifically operates as follows:
the sampling frequency judging module is preloaded with a temperature thresholds with the temperature from low to high, a +1 temperature intervals are corresponded, and the a +1 temperature intervals are corresponded with a +1 preset temperature sampling frequencies; wherein a is 1,2, …, n;
and comparing the received current temperature of the cable joint with the a pre-loaded temperature thresholds, and sending the temperature sampling frequency corresponding to the temperature interval where the current temperature of the cable joint is located to the system control module.
8. A cable splice temperature monitoring device according to claim 7Wherein the sampling frequency decision module is preloaded with 3 temperature thresholds T from low to high temperatureA、TB、TC4 temperature sampling frequencies F1, F2, F3 and F4 are preset, and the current temperature of the received cable joint is Ti；
When T isi≤TAWhen the temperature is detected, the temperature sampling frequency is F1 and is sent to the system control module;
when T isA＜Ti≤TBWhen the temperature is detected, the temperature sampling frequency is F2 and is sent to the system control module;
when T isB＜Ti≤TCWhen the temperature is detected, the temperature sampling frequency is F3 and is sent to the system control module;
when T isi＞TCThen the temperature sampling frequency F4 is sent to the system control module.
9. The cable joint temperature monitoring device according to any one of claims 6 to 8, further comprising a temperature data storage module for receiving and storing the temperature of the cable joint collected by the temperature data collection module.
10. A computer readable storage medium, characterized in that the storage medium comprises stored program instructions adapted to be loaded by a processor and to perform the cable joint temperature data acquisition method according to any one of claims 1 to 5.
Technical Field
The invention relates to the technical field of power transmission and distribution line state monitoring, in particular to a cable joint temperature data acquisition method, a monitoring device and a storage medium.
Background
The cable is one of the key devices for energy transmission in the power system, the operating temperature of the cable is an important parameter for reflecting the operating state of the system, and the cable joint is the weakest link in the system and is a serious disaster area of line faults. Mainly along with the increase of circuit operating time, cable joint is changeed and is generated heat to the oxidation of cable is accelerated, makes the contact resistance grow, and the temperature rises, finally forms vicious circle, causes the transmission line trouble. Therefore, the operation temperature of the cable joint can be mastered in real time, potential hidden dangers can be found as early as possible, the fault probability of the line is reduced, the operation and maintenance cost of the line is reduced, the working efficiency of line maintenance personnel is improved, and great economic benefits and social benefits are achieved.
At present, the cable joint temperature monitoring device collects data by a method of collecting the temperature data at fixed time points at fixed intervals, the sampling frequency of the cable joint temperature is not changed, and although the cable joint temperature can be stably and reliably obtained, the excessively high fixed sampling frequency may cause the waste of system resources of the cable joint temperature monitoring device and the increase of system power consumption, thereby reducing the service life of the cable joint temperature monitoring device; and too low fixed sampling frequency also can cause the risk that cable joint temperature acquireed in real time to reduce the real-time perception degree of electric wire netting personnel to cable joint temperature information.
Disclosure of Invention
The invention provides a cable joint temperature data acquisition method, a monitoring device and a storage medium, and aims to solve the problem that hidden dangers cannot be found in time due to the fact that the service life of the monitoring device is short due to the fact that sampling frequency is too high or due to the fact that sampling frequency is too low in the prior art.
The invention provides a cable joint temperature data acquisition method in a first aspect, which comprises the following steps:
s1: acquiring the current temperature of the cable joint at an initial temperature sampling frequency;
s2: comparing the current temperature with a preset cable joint temperature threshold value, and changing the temperature sampling frequency according to the comparison result;
s3: acquiring the temperature of the cable joint at the changed temperature sampling frequency; and steps S2-S3 are repeated.
According to the cable joint temperature data acquisition method, a cable joint temperature threshold value is preset firstly, then the acquired current temperature of the cable joint is compared with the preset cable joint temperature threshold value, the temperature sampling frequency is changed according to the comparison result, when the current temperature of the cable joint is lower, the time interval of temperature sampling can be increased, when the temperature is higher, the time interval of temperature sampling can be shortened, so that the intelligent dynamic adjustment of the cable joint temperature acquisition frequency is realized, system resources can be reasonably utilized, the service life of the cable joint temperature monitoring device is prolonged, meanwhile, the operating temperature of the cable joint can be mastered in real time, potential safety hazards can be found in time, the line fault probability is reduced, the line operation and maintenance cost is reduced, and the working efficiency of line maintenance personnel is improved.
Further, step S2, comparing the current temperature with a preset cable joint temperature threshold, and changing the temperature sampling frequency according to the comparison result; the method specifically comprises the following steps:
presetting a temperature thresholds according to the temperature from low to high, corresponding to a +1 temperature intervals, wherein the a +1 temperature intervals correspond to a +1 preset temperature sampling frequencies; wherein a is 1,2, …, n;
and comparing the acquired current temperature with a preset a temperature thresholds, and changing the original temperature sampling frequency into the temperature sampling frequency corresponding to the temperature interval in which the current temperature is positioned.
The temperature sampling frequency is set corresponding to a plurality of temperature intervals by setting temperature thresholds of different levels. Through the setting, the temperature sampling frequency can be adjusted more flexibly, the time interval of temperature acquisition can be shortened along with the increasing of the temperature of the cable joint, the system resources are more reasonably utilized, and potential safety hazards can be timely found.
Furthermore, 3 temperature thresholds T are preset according to the temperature from low to highA、TB、TCThe method includes presetting 4 temperature sampling frequencies F1, F2, F3 and F4, wherein the obtained current temperature is Ti；
When T isi≤TAWhen the temperature is measured, changing the current temperature sampling frequency to be F1, and acquiring the temperature of the cable joint according to the temperature sampling frequency F1;
when T isA＜Ti≤TBWhen the temperature is measured, changing the current temperature sampling frequency to be F2, and acquiring the temperature of the cable joint according to the temperature sampling frequency F2;
when T isB＜Ti≤TCWhen the temperature is measured, changing the current temperature sampling frequency to be F3, and acquiring the temperature of the cable joint according to the temperature sampling frequency F3;
when T isi＞TCAnd changing the current temperature sampling frequency to be F4, and acquiring the temperature of the cable joint according to the temperature sampling frequency F4.
Further, still include: when T isi＞TCAnd sending out a warning signal of abnormal temperature of the cable joint. When the collected temperature of the cable joint is greater than a preset maximum temperature threshold value, sending out a cable joint temperature abnormity alarm signalAnd timely alert line maintenance personnel.
Further, a temperature threshold TAAt 70 ℃ and a temperature threshold TBAt 80 ℃ and a temperature threshold TCIs 90 ℃;
the temperature sampling frequency F1 is collected once every two hours, and the temperature sampling frequency F2 is collected once every hour; the temperature sampling frequency F3 was acquired every ten minutes, and the temperature sampling frequency F4 was acquired every ten minutes.
The invention provides a cable joint temperature monitoring device in a second aspect, which comprises a temperature data acquisition module, a sampling frequency judgment module, a communication module, a system control module and a power supply module, wherein the temperature data acquisition module is used for acquiring the temperature data of a cable joint;
the temperature data acquisition module is used for acquiring the current temperature of the cable joint according to the current temperature sampling frequency and sending the acquired current temperature of the cable joint to the sampling frequency judgment module;
the sampling frequency judging module is used for comparing the received current temperature of the cable joint with a pre-loaded cable joint temperature threshold, obtaining a new temperature sampling frequency according to a comparison result and sending the new temperature sampling frequency to the system control module;
the system control module is used for receiving a new temperature sampling frequency, updating the current temperature sampling frequency to the new temperature sampling frequency, and then sending the new temperature sampling frequency to the temperature data acquisition module through the communication module so as to acquire the temperature of the cable joint;
the temperature data acquisition module, the sampling frequency judging module, the communication module and the system control module are all connected with the power module, the temperature data acquisition module, the sampling frequency judging module, the system control module and the communication module are sequentially connected, and the communication module is further connected with the temperature data acquisition module.
The cable joint temperature monitoring device is characterized in that a cable joint temperature threshold is preloaded on a sampling frequency judging module, then the obtained current temperature of the cable joint is compared with the preloaded cable joint temperature threshold, a new temperature sampling frequency is obtained according to a comparison result, the new temperature sampling frequency is sent to a system control module, and the system control module sends the new temperature sampling frequency to a temperature data acquisition module through a communication module so as to acquire the temperature of the cable joint. When cable joint's current temperature is lower, can increase the time interval of temperature sampling, when the temperature is higher, can shorten the time interval of temperature sampling, thereby realize the intelligent dynamic adjustment of cable joint temperature acquisition frequency, can the rational utilization system resource, with promotion cable joint temperature monitoring devices's life, also can master cable joint's operating temperature in real time simultaneously, in time discover potential safety hazard, reduce circuit fault probability, reduce circuit fortune dimension cost, improve circuit maintainer's work efficiency.
Further, the sampling frequency determination module specifically works as follows:
the sampling frequency judging module is preloaded with a temperature thresholds with the temperature from low to high, a +1 temperature intervals are corresponded, and the a +1 temperature intervals are corresponded with a +1 preset temperature sampling frequencies; wherein a is 1,2, …, n;
and comparing the received current temperature of the cable joint with the a pre-loaded temperature thresholds, and sending the temperature sampling frequency corresponding to the temperature interval where the current temperature of the cable joint is located to the system control module.
Further, the sampling frequency decision module is preloaded with 3 temperature thresholds T from low to high temperatureA、TB、TC4 temperature sampling frequencies F1, F2, F3 and F4 are preset, and the current temperature of the received cable joint is Ti；
When T isi≤TAWhen the temperature is detected, the temperature sampling frequency is F1 and is sent to the system control module;
when T isA＜Ti≤TBWhen the temperature is detected, the temperature sampling frequency is F2 and is sent to the system control module;
when T isB＜Ti≤TCWhen the temperature is detected, the temperature sampling frequency is F3 and is sent to the system control module;
when T isi＞TCThen the temperature sampling frequency F4 is sent to the system control module.
Further, still include temperature data storage module, temperature data acquisition module and power module all with temperature data storage module connects, temperature data storage module is used for receiving and storing the temperature of the cable joint that temperature data acquisition module gathered. Through setting up temperature data storage module, can save the temperature of the cable joint that temperature data acquisition module gathered, carry out the system backup to the trace back of later stage.
In a third aspect of the invention, a computer readable storage medium is provided, the storage medium comprising stored program instructions adapted to be loaded by a processor and to perform a cable joint temperature data acquisition method as described above.
Advantageous effects
The invention provides a cable joint temperature data acquisition method, a monitoring device and a storage medium, wherein a cable joint temperature threshold is preset, then the acquired current temperature of a cable joint is compared with the preset cable joint temperature threshold, the temperature sampling frequency is changed according to the comparison result, when the current temperature of the cable joint is lower, the time interval of temperature sampling can be increased, and when the temperature is higher, the time interval of temperature sampling can be shortened, so that the intelligent dynamic adjustment of the cable joint temperature sampling frequency is realized.
Drawings
Fig. 1 is a flowchart of a method for acquiring temperature data of a cable joint according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a cable joint temperature monitoring device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.