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Feeder fault handling method

A fault handling method and feeder technology, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve problems such as large coupling degree, large difference, and difficulty in obtaining equipment parameters, so as to reduce power outage time, reduce power outage range, The effect of strong guidance

Active Publication Date: 2012-02-15
HUNAN ELECTRIC POWER CORP RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional feeder fault processing method is generally established on the power flow calculation module. The feeder fault processing module is highly coupled with advanced application modules such as distribution network power flow calculation, which increases the complexity of feeder fault processing, reduces the reliability of feeder fault processing, and affects The practicability of feeder fault handling
In addition, due to the wide variety of distribution network equipment, it is very difficult to obtain equipment parameters, which eventually leads to a large difference between the distribution network power flow calculation results and the actual situation, which affects the reliability and efficiency of feeder fault handling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Use the feeder fault processing server to search online, and wait for 10 to 300 seconds after the feeder fault processing server receives the fault information sent by the FTU or the feeder outlet switch protection action information sent by the RTU in the substation. If a new fault message or feeder exit switch protection action message is received within the set waiting time, the waiting timer is reset to zero and the accumulated waiting time is restarted.

[0022] (2), according to the record of the switch in the feeder line and the switch state of the feeder line outlet before the fault occurs, use the conventional method to analyze the network topology, and draw the conclusion of the network topology analysis;

[0023] (3) According to the fault information sent by the FTU received in step (1) or the feeder outlet switch protection action information sent by the RTU in the substation and the conclusion of the network topology analysis obtained in step (2), use c...

Embodiment 2

[0030] (1) Use the feeder fault processing server to search online, and wait for 10 to 300 seconds after the feeder fault processing server receives the fault information sent by the FTU or the feeder outlet switch protection action information sent by the RTU in the substation. If no new fault information or feeder exit switch protection action information is received within the set waiting time, use the conventional method to locate the feeder fault;

[0031] Steps (2)-(8) are the same as in Example 1.

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PUM

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Abstract

The invention introduces a feeder fault handling method, which comprises the following steps of: 1) conducting online search and locating a feeder fault; 2) conducting network topology analysis to draw a conclusion; 3) finding out the section of the fault; 4) searching for the boundary switch of the fault section and making a fault isolation plan; 5) defining non-fault power outage areas; 6) making power supply restoration plans for outage areas on the upstream side and the downstream side of the fault; 7) conducting safety evaluation to the downstream power supply restoration plan; and 8) executing the plans according to the safety evaluation obtained at the step 7. The feeder fault handling method has the advantages that: 1) the method is suitable for the automatic construction of feeders of a power distribution network which is wired in any way; 2) the practicability is high, the impedance parameters of the equipment of the distribution network are not required and the power flow calculation module is not required to be called; and 3) the power supply restoration can be separately conducted to the non-fault sections, so as to reduce the power outage range and decrease the poweroutage duration as much as possible.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and in particular relates to a feeder fault processing method suitable for a power distribution automation system. Background technique [0002] Feeder automation is the core function of distribution automation system. The feeder automation is realized, which can reduce the power outage scope and reduce the power outage time caused by the fault, thereby improving the reliability of power supply. The feeder fault handling method is the main means to realize feeder automation. The core problem is how to locate the feeder fault, how to isolate the fault and how to restore the power supply in the non-fault area, referred to as fault diagnosis, location, isolation and recovery. The traditional feeder fault processing method is generally established on the power flow calculation module. The feeder fault processing module is highly coupled with advanced application modules such as distri...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02H7/26
Inventor 赵永生谭志海孙秋鹏冷华周淑雄张亮峰葛亮赵凤青张磊李华
Owner HUNAN ELECTRIC POWER CORP RES INST
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