A Method of End User Selection Based on Graph Topology
A user and topology technology, applied in electrical components, information technology support systems, circuit devices, etc., can solve problems such as affecting the quality of power supply, unable to fully understand the power supply situation, etc., to ensure people's production and living electricity, improve power supply quality, reduce The effect of failure rate
Active Publication Date: 2017-03-22
STATE GRID CORP OF CHINA +2
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[0002] With the continuous advancement of the installation of smart meters for low-voltage users in Zhejiang Province, in addition to daily meter reading, smart meters have the function of remotely calling and measuring the user’s voltage. The number of users exceeds 20 million, and some of them use the carrier wave method to collect data. There is a bottleneck in the full collection of voltage data. According to calculations, the number of residential voltage surveys in the electricity consumption information collection system is only about 600,000 households per day, and it is impossible to fully understand the power supply situation. , especially the occurrence of low voltage during peak hours every day, which affects the quality of power supply
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[0022] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0023] In the present invention, the selection of the end user is carried out according to the principle of "the longest independent line". Figure 7 The method shown is selected for calculation.
[0024] Below to figure 1 Take the grid topology shown as an example, and describe the method steps in detail:
[0025] 1. For each distribution station area, calculate the distance from each user (or access point) to the head end of the station area; figure 2 shown;
[0026] 2. Find the user with the longest distance, mark it as the first end user P1, and mark the line between the head end of the station area and the user as the monitored line; image 3 shown;
[0027] 3. Calculate the shortest distance between each other user and the monitored line, that is, the length of the independent line; Figure 4 shown;
[0028] 4. Find out...
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The invention provides an end user selection method based on graphical topology, relating to an end user selection method. At present, the power supply situation can not be fully understood by a power use information collection system, and the power supply quality is affected. The method comprises a step of calculating the distance between each user and a station area front end, a step of finding a user with the largest distance, marking the user as a first end user, and making a line as a first monitored line, a step of calculating the smallest distance which is an independent line length between each user and a monitored line, a step of finding a user with the largest independent line length, marking the user as a next end user, and marking the line as a monitored line, a step of repeating the above two steps, making end users according to a sequence and stopping calculating and marking when the largest independent line length is smaller than a set value, and a step of carrying out voltage monitoring on a marked end user. According to the technical scheme, in the condition of small communication cost, a power distribution station area and a user with possible low voltage are accurately screened.
Description
technical field [0001] The invention relates to a terminal user selection method, in particular to a graph topology-based terminal user selection method. Background technique [0002] With the continuous advancement of the installation of smart meters for low-voltage users in Zhejiang Province, in addition to daily meter reading, smart meters have the function of remotely calling and measuring the user’s voltage. The number of users exceeds 20 million, and some of them use the carrier wave method to collect data. There is a bottleneck in the full collection of voltage data. According to calculations, the number of residential voltage surveys in the electricity consumption information collection system is only about 600,000 households per day, and it is impossible to fully understand the power supply situation. , especially the occurrence of low voltage during peak hours every day, affects the quality of power supply. Contents of the invention [0003] The technical proble...
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IPC IPC(8): H02J13/00
CPCY04S10/40
Inventor 王伟峰李熊胡若云俞成彪麻吕斌
Owner STATE GRID CORP OF CHINA