CN110146786B

CN110146786B - Fault location method for multi-user repair report based on low-voltage distribution network topology

Info

Publication number: CN110146786B
Application number: CN201910513801.0A
Authority: CN
Inventors: 陈辉; 陆丽君; 徐军; 张伟; 王晓龙; 花艳; 虞晓洁
Original assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Changzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Changzhou Changgong Electric Power Design Institute Co ltd; State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Changzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2021-06-04
Anticipated expiration: 2039-06-14
Also published as: CN110146786A

Abstract

The present invention provides a multi-user repair report fault location method based on low-voltage distribution network topology, which mainly includes the steps: 1. repair report user location: find and locate the node where each user is located in the low-voltage distribution network topology model; 2. low-voltage power supply path traceability : Starting from users who report for repairs, search for connection nodes upstream in the topology model of the low-voltage distribution network, and summarize the node equipment traced by multiple users into their respective low-voltage power supply paths; ③ Hierarchical fault equipment location: according to the low-voltage distribution network At the network topology level, compare whether there are common node devices on the power supply paths of multiple repair users. If so, check successively whether the common node devices are distribution transformers, low-voltage branch boxes, low-voltage switches, and low-voltage meter boxes and determine the faulty devices accordingly. , if there is no public node, the faults reported by multiple households for repair are located as low-voltage single-household faults. The invention can quickly locate the fault point, reduce the work burden of the on-site emergency repair team, and improve the work efficiency.

Description

Multi-user repair fault positioning method based on low-voltage distribution network topology

Technical Field

The invention relates to the field of power supply enterprise customer fault first-aid repair, in particular to a multi-user repair fault positioning method based on low-voltage distribution network topology.

Background

At present, the quantity of distribution network low pressure trouble is bigger, and the user reports when repairing, if every reports and repairs and all needs to arrange personnel and salvage, need invest in a large amount of manpowers. In general, repair of a plurality of users is usually caused only by a fault of one device on a power supply path, and only one team is needed to participate in repair.

In recent years, with the gradual improvement of basic archive work of a power supply department, a low-voltage distribution network topology model is constructed, so that how to utilize the existing low-voltage distribution network topology model to realize quick positioning of multi-user fault repair is necessary.

Disclosure of Invention

The purpose of the invention is: the method solves the problems that in the existing customer service process of power supply enterprises, each user repair is simply positioned as a fault and an emergency maintenance team is dispatched, so that the emergency maintenance team repeatedly arrives at the site and the load is too heavy.

The technical scheme of the invention is as follows: the invention discloses a multi-user repair fault positioning method based on low-voltage distribution network topology, which comprises the following steps of:

repair user positioning: acquiring fault repair acceptance information of a plurality of users within current 10 minutes from a customer service system of a power supply enterprise, and searching and positioning a node where each user is located in a low-voltage distribution network topology model according to a user number provided by a repair user;

tracing a low-voltage power supply path: searching connection nodes step by step upstream in a low-voltage distribution network topology model by taking repair reporting users as starting points until the distribution transformer is traced back to stop, and respectively summarizing the node equipment traced back by a plurality of users into respective low-voltage power supply paths;

thirdly, positioning hierarchical fault equipment: according to the topological hierarchy of the low-voltage distribution network, comparing whether public node equipment exists on power supply paths of a plurality of repair users, and if yes, entering the step A; if not, entering the step B:

A. from distribution transformer downward hierarchical analysis location trouble equipment and location one by one, specifically include:

i, checking whether the common node equipment is a distribution transformer or not, and if so, positioning the distribution transformer as fault equipment; if not, entering a step II;

II, checking whether the common node equipment is a low-voltage branch box, and if so, positioning the low-voltage branch box as fault equipment; if not, entering the step III;

III, checking whether the common node equipment is a low-voltage switch or not, and if so, positioning the low-voltage switch as fault equipment; if not, entering the step IV;

IV, checking whether the common node equipment is a low-voltage meter box, and if so, positioning the low-voltage meter box as fault equipment;

B. and positioning the faults reported by multiple households as low-voltage single-household faults.

The invention has the positive effects that: the multi-user repair fault positioning method based on the low-voltage distribution network topology is based on the low-voltage distribution network topology model, and aims at the repair of a plurality of user faults, the power supply paths of users are traced and compared, and then fault equipment is positioned from top to bottom in a hierarchical mode, upstream fault points are quickly positioned, the number of repeated dispatches of customer service departments of power supply enterprises is reduced, the workload of on-site repair teams is reduced, and the working efficiency is improved.

Drawings

FIG. 1 is a flow chart of the method of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

(example 1)

Referring to fig. 1, the multi-user repair fault location method based on the low-voltage distribution network topology of the embodiment is implemented by the following steps:

The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.

Claims

1. a multi-user repair report fault location method based on low-voltage distribution network topology, is characterized in that, comprises the following steps:

①Location of users who report for repairs: Obtain the acceptance information of multiple user fault reports within the current 10 minutes from the customer service system of the power supply company, and find and locate the node where each user is located in the topology model of the low-voltage distribution network according to the user number provided by the user who applied for repair. ;

② Low-voltage power supply path traceability: Starting from the user who reported for repairs, search for connection nodes upstream in the low-voltage distribution network topology model, until the traceability of the distribution transformer stops, and summarize the node equipment traced by multiple users into their own low-voltage distribution network. power supply path;

③ Hierarchical fault device location: According to the topology level of the low-voltage distribution network, compare whether there are common node devices on the power supply paths of multiple repair users. If so, go to step A; if not, go to step B:

A. Analyze and locate the faulty equipment one by one from the distribution transformer down, including:

Ⅰ. Check whether the public node equipment is a distribution transformer, if so, locate the distribution transformer as a faulty equipment; if not, go to step II;

II. Check whether the common node equipment is a low-voltage branch box, if so, locate the low-voltage branch box as a faulty device; if not, go to step III;

Ⅲ. Check whether the common node equipment is a low-voltage switch, if so, locate the low-voltage switch as a faulty device; if not, go to step IV;

Ⅳ. Check whether the public node equipment is a low-voltage meter box, if so, locate the low-voltage meter box as a faulty device;

B. The faults reported by multiple households for repair are all located as low-voltage single-household faults.