Adaptive local feeder automation fault processing method independent of network topology

A fault handling method and feeder automation technology, applied to electrical components, emergency protection circuit devices, etc., can solve the problems of consuming a lot of manpower and material resources, to ensure timing, realize local positioning and isolation, and ensure accuracy and effectiveness Effect

Inactive Publication Date: 2017-01-04
STATE GRID SHANDONG ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The distribution line changes frequently, and there are about 1-3 line changes per day in the medium-sized city distribution network. For the traditional voltage-time feeder automation method, in order to ensure the closing sequence of the section switch,

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  • Adaptive local feeder automation fault processing method independent of network topology
  • Adaptive local feeder automation fault processing method independent of network topology
  • Adaptive local feeder automation fault processing method independent of network topology

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[0043] In order to clearly illustrate the technical characteristics of the present solution, the present invention will be described in detail below through specific implementations and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily...

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Abstract

The invention discloses an adaptive local feeder automation fault processing method independent of a network topology. The method comprises the following processes of unified constant value setting of section switches; adaptive adjustment of constant values of the section switches: tripping a power distribution line after a fault, de-energizing and opening all section switches, adding adjustment time [delta]t to the power-on closing time of the section switches through which no fault current passes on the basis of unified constant values and ensuring a power-on closing time sequence of the section switches; fault isolation: reclosing the power distribution line, sequentially closing the section switches, when the section switch nearest to a fault point is in the fault, generating a short-circuit fault and tripping again, and locking the section switch nearest to the fault point due to the fact that the time from power-on closing to voltage-loss opening again is shorter than fault confirming time and achieving isolation of the fault point; and non-fault section power supply restoration: reclosing the power distribution line for the second time, sequentially powering on and closing the section switches which are not locked on the power distribution line and restoring non-fault section power supply of the power distribution line.

Description

technical field [0001] The invention relates to a power system fault processing method, in particular to an adaptive local feeder automation fault processing method independent of network topology, and belongs to the technical field of power system feeder automation. Background technique [0002] On-site reclosing type feeder automation realizes fault location and isolation through the working characteristics of the switch or switch terminal complete set of equipment "opening when power is off and closing when power is delayed". High rate, small investment and other advantages. However, in practical applications, it is found that the traditional on-site coincidence type feeder automation mode needs to calculate and set the section switch setting value according to the line topology connection relationship, and it needs to be revised again when the line changes or the operation mode is adjusted. Adjusting the fixed value brings difficulties to the operation and maintenance o...

Claims

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Application Information

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IPC IPC(8): H02H7/26
CPCH02H7/262
Inventor 刘日亮赵江河张波房牧李洪涛许明陈奎阳朱中华
Owner STATE GRID SHANDONG ELECTRIC POWER
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