Fault-tolerant method for distribution network fault location based on information completion and correction

A distribution network fault and completion technology, which is applied in the field of distribution network fault location fault tolerance and state information distortion in the case of loss, can solve the problems of low fault location accuracy, loss of switch state information, and low accuracy rate, etc., to achieve Enhance fault tolerance and accuracy, improve power supply reliability, and achieve low implementation costs

CN103698657BInactive Publication Date: 2016-02-24HUNAN UNIV +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-02-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a power distribution network fault positioning fault tolerance method based on information completion and correction. The power distribution network fault positioning fault tolerance method based on the information completion and correction comprises the following steps: 1) classifying feed breakers in the corresponding topological graph of a power distribution network area, and determining whether current flows through the feed breakers according to switch state information uploaded by terminal equipment; 2) judging whether the switch state information uploaded by the terminal equipment is lost or not; 3) according to a node switch overcurrent decision rule, complementing the switch state information uploaded by the terminal equipment, which has lost information; and 4) carrying out distortion analysis to the switch uploading state information which has no lost information or has completed information, ending if no distortion is in the presence, and otherwise, starting step 5); 5) finding out and correcting distortion information. The power distribution network fault positioning fault tolerance method based on the information completion and correction has the characteristics of high fault positioning accuracy and easiness in implementation.
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Description

technical field

[0001] The invention relates to a fault-tolerant method for fault location of a distribution network based on information completion and correction, which is a fault-tolerant method for fault location of a distribution network considering the distortion and loss of state information uploaded by a terminal, and relates to the field of fault location of a distribution network. Background technique

[0002] The fault location of the traditional distribution network is to send patrol personnel along the line to find the fault point after the fault occurs, which is time-consuming and laborious, resulting in long power outages. Even if the power distribution management center is equipped with a geographic information system, which can assist in troubleshooting and restore power supply, it still takes a long time due to manual intervention. Therefore, in order to improve the reliability of power supply, fault detection must be realized in the power distribution syste...

Examples

Embodiment 1

[0057] Before the distribution network fault location, it is necessary to pass several key concepts used figure 1 Description, including feeder switch, switch overcurrent information, equipment status information, etc.

[0058] figure 1 Among them, S1 and S2 are two power supplies, 1 and 6 are two incoming line circuit breakers, 2, 3, 4, and 5 are feeder section switches, and C is a tie switch. The segment switches are all closed to run, and the contact switch is disconnected to run. F1-F6 are 6 devices, of which F1-F3 are powered by power supply S1, and F4-F6 are powered by power supply S2.

[0059] Feeder switches refer to circuit breakers, section switches, and tie switches. Shown in 1, 2, 3, 4, 5, 6, C in the figure.

[0060] Switch over-current information: refers to the current situation of each feeder switch. It is divided into overcurrent and normal current. When the overcurrent is overcurrent, the switch overcurrent information is defined as 1, otherwise it is 0. ...