A Fault Handling Method for the First Section of Distribution Lines under Non-Interactive Conditions

A fault handling method and power distribution line technology, which is applied in the field of feeder automation, can solve the problems of not considering feeder automation fault isolation, failure to automatically isolate fault areas other than the first fault area, etc., and achieve the effect of simple implementation and obvious effect

Active Publication Date: 2019-07-19
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for handling the fault of the first section of the distribution line under non-interactive conditions. Automatic fault isolation of the feeder section of the line, if the first section of the line fails, only rely on the action of the outlet protection outlet, the entire line will lose power to remove the fault, but cannot automatically isolate the faulty area and complete the power supply of the non-first section faulty area

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  • A Fault Handling Method for the First Section of Distribution Lines under Non-Interactive Conditions
  • A Fault Handling Method for the First Section of Distribution Lines under Non-Interactive Conditions
  • A Fault Handling Method for the First Section of Distribution Lines under Non-Interactive Conditions

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and specific embodiment the invention is further introduced:

[0015] Such as Figure 1~2 As shown, a fault handling method for the first section of distribution line under non-interactive conditions, through the matching and logic action of the substation outlet protection time setting, combined with the fault recovery under the condition of distributed feeder automation communication, the substation exit protection Under the condition of no information interaction with the first distribution line terminal, the fault isolation of the first section of the outgoing line of the substation and the power supply recovery of the non-first section fault area are realized.

[0016] The hand-in-hand line is used in the test, such as figure 2 As shown, switch 1 and switch 6 correspond to substation protection, switch 2-switch 5 correspond to distribution line terminals, there is no difference between switch 1 protection and switch ...

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Abstract

The invention discloses a distribution line first-section fault processing method under a non-interactive condition. Through substation outgoing line protection time constant value matching and logical action and through fault recovery under the condition of automatic communication of a distributed feeder, the fault at the first section of a substation outgoing line is isolated and power supply in a non-first-section-fault region is recovered under the condition that substation exit protection and a first distribution line terminal cannot carry out information interaction. The solution can only be that fault processing of the line is taken as a blind spot, namely, feeder automatic fault isolation of the first section of the line is not considered, and if the first section of the line fails, exit action is protected by the outgoing line only, and the fault is removed by powering off the whole line. The fault region cannot be isolated automatically, and power supply in the non-first-section-fault region cannot be completed.

Description

technical field [0001] The patent of the invention belongs to the technical field of feeder automation of distribution automation systems, and in particular relates to a method for handling faults in the first section of distribution lines under non-interactive conditions. Background technique [0002] Feeder automation is a very important aspect of distribution automation system. Distributed feeder automation uses communication and information interaction between adjacent terminals to locate fault areas and complete fault handling. Therefore, for the line faults that occur between ordinary sub-section switches, the location and isolation of the fault area and the power supply for non-first-stage fault areas can be successfully realized through the relevant information interaction between power distribution terminals; The first section of the line between the sub-section switches is faulty, because only the outlet protection can detect the fault at this time, but the first p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/26
CPCH02H7/26
Inventor 肖小兵徐长宝温彦军林呈辉桂军国何肖蒙刘元俊张锐锋高吉普王宇孔祥伦吴捷方勇陈波凌万水
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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