阅读说明：本技术 基于电能表低压电力线宽带载波通信的台区管理监控方法 (Transformer area management monitoring method based on electric energy meter low-voltage power line broadband carrier communication ) 是由 裴迅 吴红林 王登政 田万军 于 2019-10-12 设计创作，主要内容包括：本发明公开一种基于电能表低压电力线宽带载波通信的台区管理监控方法,包括：步骤1)、各用户的载波电能表按照采样周期通过低压电力线宽带载波通信的方式上传采集的信息给集中器,集中器将收集的台区载波电能表采集的信息通过RS232接口上传给台区智能管理单元；步骤2)、台区智能管理单元对各集中器上传的台区电能表信息进行分析,对有异常的集中器/载波电能表,按照异常的种类在分类进行显示并存储。本发明不但利用低压电力载波技术传递的信息实现台区异常细化而且达到了了台区智能管理的目的；本发明将对应的集中器/载波电能表的编号进行对应显示,便于工人及时查看检查。(The invention discloses a station area management monitoring method based on electric energy meter low-voltage power line broadband carrier communication, which comprises the following steps: step 1), uploading acquired information to a concentrator by a carrier electric energy meter of each user according to a sampling period in a low-voltage power line broadband carrier communication mode, and uploading the acquired information to a transformer area intelligent management unit by the concentrator through an RS232 interface; and step 2), the station area intelligent management unit analyzes the information of the station area electric energy meters uploaded by the concentrators, and displays and stores abnormal concentrator/carrier electric energy meters in a classified manner according to abnormal types. The invention not only utilizes the information transmitted by the low-voltage power line carrier technology to realize the abnormal refinement of the transformer area, but also achieves the purpose of intelligent management of the transformer area; the invention correspondingly displays the serial numbers of the corresponding concentrators/carrier electric energy meters, thereby facilitating the workers to check and examine in time.)

1. A station area management monitoring method based on electric energy meter low-voltage power line broadband carrier communication is characterized by comprising the following steps:

step 1), uploading acquired information to a concentrator by a carrier electric energy meter of each user according to a sampling period in a low-voltage power line broadband carrier communication mode, and uploading the acquired information to a transformer area intelligent management unit by the concentrator through an RS232 interface;

step 2), the district intelligent management unit analyzes the district electric energy meter information uploaded by each concentrator, and the method is realized: 1) locally monitoring the daily line loss; 2) locally monitoring the power supply reliability of the transformer area; 3) locally monitoring the pass percent of the voltage of the transformer area; 4) locally monitoring the load rate of the transformer area; 5) and locally monitoring abnormal data of the user.

2. The method for managing and monitoring the transformer area based on the electric energy meter low-voltage power line broadband carrier communication according to claim 1, wherein in the step 2), the local monitoring of the day line loss comprises the following steps: the station area intelligent management unit reads forward active electric quantity W1 of a station area gateway electric energy meter at 24 days and forward active electric quantity W2 of a previous day 24, and sum sigma W3 of forward active electric quantities of all charging users at 24 days and sum sigma W4 of forward active electric quantities of all charging users at 24 days, locally calculates daily power supply quantity (W1-W2) of the station area, and further calculates the line loss rate of the station area as follows: 1- (. SIGMA W3-. SIGMA W4)/(W1-W2), and achieves the goal of local monitoring of the line loss of the transformer area.

3. The method for managing and monitoring the transformer area based on the electric energy meter low-voltage power line broadband carrier communication according to claim 1, wherein in the step 2), the localized monitoring of the transformer area power supply reliability comprises: and the district intelligent management unit collects the power failure event of the district, analyzes the power failure event, determines the actual power failure time H1 (unit H) of the day, locally calculates the power supply reliability of the district to be 1-H1/24, and completes the power supply reliability monitoring of the district.

4. The method for managing and monitoring the transformer area based on the electric energy meter low-voltage power line broadband carrier communication according to claim 1, wherein in the step 2), the locally monitoring of the transformer area voltage qualification rate comprises: the transformer area intelligent management unit collects voltage values Um of the transformer area gateway electric energy meter every 15 minutes; 96 data are collected in one day, rated voltage (220V) +/-7% is used as a threshold value, the number M1 meeting the voltage qualification requirement in the day is calculated locally, the voltage qualification rate of the transformer area is further calculated to be M1/96, and the voltage qualification rate monitoring of the transformer area is realized.

5. The method for managing and monitoring the transformer area based on the electric energy meter low-voltage power line broadband carrier communication according to claim 1, wherein in the step 2), the locally monitoring of the load rate of the transformer area comprises: the transformer area intelligent management unit acquires voltage values Im of the transformer area gateway electric energy meter every 15 minutes; and totally acquiring 96 data In one day, wherein the rated current of the transformer area is In, locally calculating the load rate of Im/In at each acquisition time point, and further calculating the load rate of the transformer area as sigma Im/(24 In), thereby realizing the load rate monitoring of the transformer area.

6. The method for managing and monitoring the transformer area based on the electric energy meter low-voltage power line broadband carrier communication according to claim 1, wherein in the step 2), the local monitoring of the user abnormal data comprises: and the station area intelligent management unit analyzes the information of the station area electric energy meters uploaded by each concentrator, and displays and stores the abnormal concentrator/carrier electric energy meters in a classified manner according to the abnormal types.

7. The method for managing and monitoring the transformer area based on the electric energy meter low-voltage power line broadband carrier communication according to claim 6, wherein the information collected by the carrier electric energy meter comprises voltage, current, power, success or failure of collection and line loss rate; the abnormality in step 2) includes: suspected electricity theft, miswiring and abnormal operation.

8. The distribution room management and monitoring method based on electric energy meter low-voltage power line broadband carrier communication according to claim 7, wherein the step of performing suspected electricity stealing analysis by the distribution room intelligent management unit comprises:

the station area intelligent management unit judges the line loss rate information uploaded by the concentrator, and if the line loss rate is in an interval of-1% to 10%, the line loss rate of the area corresponding to the concentrator is judged to be qualified and abnormal; otherwise, a suspected electricity stealing behavior exists in part of users in the area corresponding to the concentrator, and the serial number of the concentrator is recorded and displayed in the suspected electricity stealing icon.

9. The method for managing and monitoring the transformer area based on the electric energy meter low-voltage power line broadband carrier communication according to claim 7, wherein the step of analyzing the wrong wiring by the transformer area intelligent management unit comprises the following steps:

the station area intelligent management unit judges the power information of each electric energy meter uploaded by the concentrator, calculates the electric quantity of a corresponding open-close station bus, and judges the electric quantity is normal if the total electric quantity of each electric energy meter uploaded by the concentrator is balanced with the electric quantity of the open-close station bus; otherwise, miswiring behavior exists, and the number of the concentrator is recorded and displayed in the miswiring icon.

10. The method for managing and monitoring the transformer area based on the electric energy meter low-voltage power line broadband carrier communication according to claim 7, wherein the step of analyzing the abnormal operation of the transformer area intelligent management unit comprises the following steps:

the intelligent management unit of the transformer area judges the information of each electric energy meter uploaded by the concentrator, and if the phenomena of no acquired data, negative current or zero three-phase current, zero voltage and increase of reverse electric quantity along with the lapse of time exist, the collected data are abnormal; and the station area intelligent management unit records the number of the corresponding electric energy meter and displays the number in the icon with abnormal operation.

Technical Field

The invention belongs to the technical field of power transmission and transformation monitoring, and particularly relates to a power distribution area management monitoring method based on electric energy meter low-voltage power line broadband carrier communication.

Background

The power line carrier is a communication method specific to a power system, and the power line carrier communication is a technology for transmitting an analog or digital signal at a high speed by using an existing power line through a carrier method. The method is characterized in that the technology of carrying out high-speed transmission on analog or digital signals in a carrier mode is realized as long as wires are available without erecting a network again. The method has the biggest characteristic that data transmission can be carried out only by wires without erecting a network again.

Disclosure of Invention

The invention aims to provide a station area management monitoring method based on electric energy meter low-voltage power line broadband carrier communication, so as to solve the technical problem.

In order to achieve the purpose, the invention adopts the following technical scheme:

the station area management monitoring method based on the electric energy meter low-voltage power line broadband carrier communication comprises the following steps:

step 1), uploading acquired information to a concentrator by a carrier electric energy meter of each user according to a sampling period in a low-voltage power line broadband carrier communication mode, and uploading the acquired information to a transformer area intelligent management unit by the concentrator through an RS232 interface;

step 2), the district intelligent management unit analyzes the district electric energy meter information uploaded by each concentrator, and the method is realized: 1) locally monitoring the daily line loss; 2) locally monitoring the power supply reliability of the transformer area; 3) locally monitoring the pass percent of the voltage of the transformer area; 4) locally monitoring the load rate of the transformer area; 5) and locally monitoring abnormal data of the user.

Further, in step 2), the locally monitoring of the sun rays and the loss includes: the station area intelligent management unit reads forward active electric quantity W1 of a station area gateway electric energy meter at 24 days and forward active electric quantity W2 of a previous day 24, and sum sigma W3 of forward active electric quantities of all charging users at 24 days and sum sigma W4 of forward active electric quantities of all charging users at 24 days, locally calculates daily power supply quantity (W1-W2) of the station area, and further calculates the line loss rate of the station area as follows: 1- (. SIGMA W3-. SIGMA W4)/(W1-W2), and achieves the goal of local monitoring of the line loss of the transformer area.

Further, in step 2), the locally monitoring of the power supply reliability of the cell includes: and the district intelligent management unit collects the power failure event of the district, analyzes the power failure event, determines the actual power failure time H1 (unit H) of the day, locally calculates the power supply reliability of the district to be 1-H1/24, and completes the power supply reliability monitoring of the district.

Further, in step 2), the locally monitoring of the pass rate of the cell voltage includes: the transformer area intelligent management unit collects voltage values Um of the transformer area gateway electric energy meter every 15 minutes; 96 data are collected in one day, rated voltage (220V) +/-7% is used as a threshold value, the number M1 meeting the voltage qualification requirement in the day is calculated locally, the voltage qualification rate of the transformer area is further calculated to be M1/96, and the voltage qualification rate monitoring of the transformer area is realized.

Further, in step 2), the localized monitoring of the load factor of the distribution area includes: the transformer area intelligent management unit acquires voltage values Im of the transformer area gateway electric energy meter every 15 minutes; and totally acquiring 96 data In one day, wherein the rated current of the transformer area is In, locally calculating the load rate of Im/In at each acquisition time point, and further calculating the load rate of the transformer area as sigma Im/(24 In), thereby realizing the load rate monitoring of the transformer area.

Further, in step 2), the local monitoring of the abnormal user data includes: and the station area intelligent management unit analyzes the information of the station area electric energy meters uploaded by each concentrator, and displays and stores the abnormal concentrator/carrier electric energy meters in a classified manner according to the abnormal types.

Further, the information collected by the carrier electric energy meter comprises voltage, current, power, success or failure in collection and line loss rate; the abnormality in step 2) includes: suspected electricity theft, miswiring and abnormal operation.

Further, the step of performing suspected electricity stealing analysis by the intelligent management unit of the transformer area comprises:

the station area intelligent management unit judges the line loss rate information uploaded by the concentrator, and if the line loss rate is in an interval of-1% to 10%, the line loss rate of the area corresponding to the concentrator is judged to be qualified and abnormal; otherwise, a suspected electricity stealing behavior exists in part of users in the area corresponding to the concentrator, and the serial number of the concentrator is recorded and displayed in the suspected electricity stealing icon.

Further, the step of the platform area intelligent management unit performing wrong wiring analysis includes:

the station area intelligent management unit judges the power information of each electric energy meter uploaded by the concentrator, calculates the electric quantity of a corresponding open-close station bus, and judges the electric quantity is normal if the total electric quantity of each electric energy meter uploaded by the concentrator is balanced with the electric quantity of the open-close station bus; otherwise, miswiring behavior exists, and the number of the concentrator is recorded and displayed in the miswiring icon.

Further, the step of performing operation anomaly analysis by the platform area intelligent management unit includes:

the intelligent management unit of the transformer area judges the information of each electric energy meter uploaded by the concentrator, and if the phenomena of no acquired data, negative current or zero three-phase current, zero voltage and increase of reverse electric quantity along with the lapse of time exist, the collected data are abnormal; and the station area intelligent management unit records the number of the corresponding electric energy meter and displays the number in the icon with abnormal operation.

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

the invention provides a power distribution area management monitoring method based on electric energy meter low-voltage power line broadband carrier communication, which not only utilizes information transmitted by a low-voltage power line carrier technology to realize power distribution area exception refinement, but also achieves the purpose of power distribution area intelligent management. According to the invention, the station area information is subjected to abnormity discrimination processing to realize intelligent management and monitoring of the station area, more detailed classification and processing of the station area information are achieved, and the serial numbers of the corresponding concentrators/carrier electric energy meters are correspondingly displayed, so that workers can check and check the station area information in time.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a block diagram of a system adopted by the station area management monitoring method based on electric energy meter low-voltage power line broadband carrier communication.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.

Referring to fig. 1, the present invention provides a method for managing and monitoring a distribution room based on wideband carrier communication of a low-voltage power line of an electric energy meter, comprising the following steps:

step 1), periodically uploading acquired information to a concentrator by a carrier electric energy meter of each user according to a sampling period in a low-voltage power line broadband carrier communication mode, and uploading the acquired information of the carrier electric energy meter of the station area to an intelligent management unit of the station area by the concentrator through an RS232 interface;

step 2), the district intelligent management unit analyzes the district electric energy meter information uploaded by each concentrator, and the method is realized: 1) locally monitoring the daily line loss; 2) locally monitoring the power supply reliability of the transformer area; 3) locally monitoring the pass percent of the voltage of the transformer area; 4) locally monitoring the load rate of the transformer area; 5) and locally monitoring abnormal data of the user.

1) Realizing the local monitoring of the day line loss:

the station area intelligent management unit reads forward active electric quantity W1 of a station area gateway electric energy meter at 24 days and forward active electric quantity W2 of a previous day 24, and sum sigma W3 of forward active electric quantities of all charging users at 24 days and sum sigma W4 of forward active electric quantities of all charging users at 24 days, locally calculates daily power supply quantity (W1-W2) of the station area, and further calculates the line loss rate of the station area as follows: 1- (. SIGMA W3-. SIGMA W4)/(W1-W2), and achieves the goal of local monitoring of the line loss of the transformer area.

2) The local monitoring of the power supply reliability of the distribution room is realized:

and the district intelligent management unit collects the power failure event of the district, analyzes the power failure event, determines the actual power failure time H1 (unit H) of the day, locally calculates the power supply reliability of the district to be 1-H1/24, and completes the power supply reliability monitoring of the district.

3) And realizing the local monitoring of the pass percent of the voltage of the transformer area:

the transformer area intelligent management unit collects voltage values Um of the transformer area gateway electric energy meter every 15 minutes (96 data are collected in one day), the rated voltage (220V) +/-7% is used as a threshold value, the number M1 meeting the voltage qualification requirement on the same day is calculated locally, the transformer area voltage qualification rate is further calculated to be M1/96, and the transformer area voltage qualification rate monitoring is achieved.

4) Realizing the localized monitoring of the load rate of the transformer area:

the intelligent management unit of the transformer area collects voltage values Im of the gateway electric energy meter of the transformer area every 15 minutes (96 data are collected In one day), rated current of the transformer area is In, load rate of each collection time point is calculated locally as Im/In, load rate of the transformer area is further calculated as sigma Im/(24 In), and load rate monitoring of the transformer area is achieved.

5) And local monitoring of abnormal data of the user is realized:

the station area intelligent management unit displays the abnormal electric energy meters in the display according to the abnormal types and stores the abnormal electric energy meters in the storage, so that workers can conveniently retrieve the abnormal electric energy meters; the invention is mainly used for analyzing and displaying three types of abnormalities: suspected electricity theft, miswiring and abnormal operation.

The invention realizes the intelligent monitoring of the station area management through the station area intelligent management unit, and filters and screens the abnormity of the electric energy meter information of the station area as much as possible under the condition of not influencing the normal work of a carrier communication system; and displaying the monitoring result, so that the effect of intelligent management of the transformer area can be achieved.

The abnormal station information judgment is to judge and monitor whether the information in the station area has problems through the voltage, the current and the power of an electric energy meter in the station area acquired by a carrier communication system, whether the acquisition is successful or not and the line loss rate, if yes, the problem which is judged to be in accordance with an abnormal judgment scheme is classified, counted and displayed, and when a user opens a management interface of the station area, the abnormal classification information of the station area is displayed.

The local monitoring of the user abnormal data is mainly used for analyzing and displaying three types of abnormalities: and (4) judging suspected electricity stealing, wrong wiring, abnormal operation and the like.

1. Suspected electricity stealing: the station area intelligent management unit judges the line loss rate information uploaded by the concentrator, and if the line loss rate is in an interval of-1% to 10%, the line loss rate of the area corresponding to the concentrator is judged to be qualified and abnormal; otherwise, if a suspected electricity stealing behavior exists in part of users in the area corresponding to the concentrator, recording the serial number of the concentrator and displaying the serial number in an icon of the suspected electricity stealing behavior;

2. wrong wiring: the station area intelligent management unit judges the power information of each electric energy meter uploaded by the concentrator, calculates the electric quantity of a corresponding open-close station bus, and judges the electric quantity is normal if the total electric quantity of each electric energy meter uploaded by the concentrator is balanced with the electric quantity of the open-close station bus; otherwise, the wrong wiring behavior exists, and the serial number of the concentrator is recorded and displayed in the icon of the wrong wiring;

3. abnormal operation: the intelligent management unit of the transformer area judges the information of each electric energy meter uploaded by the concentrator, and if the phenomena of no collected data, negative current or zero three-phase current, zero voltage and increase of reverse electric quantity along with the time (non-photovoltaic users) exist, the abnormality is found; and the station area intelligent management unit records the number of the corresponding electric energy meter and displays the number in the icon with abnormal operation.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.