Method for accelerating power distribution network fault tolerance location

Abstract

The invention discloses a method for accelerating power distribution network fault tolerance location. An artificial intelligence algorithm is an algorithm with higher fault tolerance in power distribution network fault section localization technologies, but the algorithm is low in fault locating speed, and difficult to meet a requirement for online real time. The method for accelerating the power distribution network fault tolerance location classifies faults according to a fault location result of a matrix algorithm, improves an initial solution of a particle swarm algorithm under multiple faults, accelerates iterative optimization, corrects error location of the matrix algorithm, and achieves fast and accurate location of power distribution network faults. The method for accelerating the power distribution network fault tolerance location uses a fault section localization result of the matrix algorithm fully, reasonably combines the matrix algorithm with the particle swarm algorithm, inherits advantages of being high in locating speed of the matrix algorithm and being good in fault tolerance of the particle swarm algorithm, achieves the fast and accurate location of faults, solves the problems that the matrix algorithm is poor in fault tolerance and the artificial intelligence algorithm is low in fault location speed in power distribution network fault localization methods.

Description

[0001] Patent field

[0002] The invention belongs to the technical field of power system automation, and relates to fault diagnosis of a distribution network, in particular to a method for accelerating fault-tolerant positioning of a distribution network fault. Background technique

[0003] The scale, capacity and coverage of modern power systems are getting bigger and bigger, and they play an important role in the national economy and people's lives. Failures and power outages will bring serious damage to social production and people's lives, so it is imminent to improve the reliability of power supply. Distribution automation is an important means to reduce power outage time, reduce power outage area, and improve power supply reliability. Among them, feeder automation is one of the most important functions of distribution automation, that is, after a distribution network fault occurs, it can timely and accurately locate the fault section, quickly isolate the fault area, and...

Examples

example 1

[0030] Example 1: if image 3 When a phase-to-phase fault occurs in the feeder section D5 of the distribution network, the method for accelerating the fault-tolerant location of the distribution network fault disclosed by the present invention includes the following steps (such as figure 1 shown):

[0031] Step 1: After a fault occurs in the distribution network, the master station first collects the fault current information of all feeder switches. If a switch uploads fault current information, define the fault information flag of the switch as 1, otherwise, define the switch The fault information flag of the feeder switch is 0; then, according to the fault current information uploaded by the feeder switch, the matrix algorithm is used to complete the location of the fault section. If a certain section is faulty, the fault flag of this section is defined as 1; flag is 0.

[0032] as attached image 3 A typical distribution network circuit is shown, assuming a phase-to-phas...

example 2

[0042] Example 2: such as Figure 5 When a phase-to-phase fault occurs in the feeder section D4 and section D8 of the distribution network, the method for accelerating the fault-tolerant location of the distribution network fault disclosed by the present invention is used to locate the fault section, including the following steps:

[0043] step 1:

[0044] A. In Example 2, under the condition that any switch fault information is not falsely reported or missed, the fault information collected by the master station is G=[1 1 1 1 0 1 1 1 0 0 0 0], where the serial number of the switch Arrange in the order of S1, A, B, G, H, C, D, E, F, K, I, J. According to the fault information G=[1 1 1 1 0 1 1 1 0 0 0 0] of the master station, the fault section location result obtained by the matrix algorithm is [0 0 0 1 0 0 0 1 0 0 0 0], where the feeder Sections are arranged in the order of D1, D2...D12.

[0045] B. In Example 2, when the fault information of switch B is missing, the fault...

[0001] Patent field

[0002] The invention belongs to the technical field of power system automation, and relates to fault diagnosis of a distribution network, in particular to a method for accelerating fault-tolerant positioning of a distribution network fault. Background technique

[0003] The scale, capacity and coverage of modern power systems are getting bigger and bigger, and they play an important role in the national economy and people's lives. Failures and power outages will bring serious damage to social production and people's lives, so it is imminent to improve the reliability of power supply. Distribution automation is an important means to reduce power outage time, reduce power outage area, and improve power supply reliability. Among them, feeder automation is one of the most important functions of distribution automation, that is, after a distribution network fault occurs, it can timely and accurately locate the fault section, quickly isolate the fault area, and...

Examples

example 1

[0030] Example 1: if image 3 When a phase-to-phase fault occurs in the feeder section D5 of the distribution network, the method for accelerating the fault-tolerant location of the distribution network fault disclosed by the present invention includes the following steps (such as figure 1 shown):

[0031] Step 1: After a fault occurs in the distribution network, the master station first collects the fault current information of all feeder switches. If a switch uploads fault current information, define the fault information flag of the switch as 1, otherwise, define the switch The fault information flag of the feeder switch is 0; then, according to the fault current information uploaded by the feeder switch, the matrix algorithm is used to complete the location of the fault section. If a certain section is faulty, the fault flag of this section is defined as 1; flag is 0.

[0032] as attached image 3 A typical distribution network circuit is shown, assuming a phase-to-phas...

example 2

[0042] Example 2: such as Figure 5 When a phase-to-phase fault occurs in the feeder section D4 and section D8 of the distribution network, the method for accelerating the fault-tolerant location of the distribution network fault disclosed by the present invention is used to locate the fault section, including the following steps:

[0043] step 1:

[0044] A. In Example 2, under the condition that any switch fault information is not falsely reported or missed, the fault information collected by the master station is G=[1 1 1 1 0 1 1 1 0 0 0 0], where the serial number of the switch Arrange in the order of S1, A, B, G, H, C, D, E, F, K, I, J. According to the fault information G=[1 1 1 1 0 1 1 1 0 0 0 0] of the master station, the fault section location result obtained by the matrix algorithm is [0 0 0 1 0 0 0 1 0 0 0 0], where the feeder Sections are arranged in the order of D1, D2...D12.

[0045] B. In Example 2, when the fault information of switch B is missing, the fault...

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