Single-phase adaptive reswitch-on comprehensive criterion realizing method for transmission line

A technology of transmission lines and implementation methods, applied in circuit devices, emergency protection circuit devices, electrical components, etc., can solve the problems of small fault phase recovery voltage, misjudgment, misjudgment of voltage criterion, etc., and achieves the effect of a wide range of applications
CN100464475CInactive Publication Date: 2009-02-25TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2009-02-25
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

This invention is a realizing method of transmitting line unilateral auto-conforming reclosing comprehensive judging evidence, based on voltage evidence, compensation voltage evidence, combination compensation voltage evidence and phase evidence. The characteristics are: if the transmitting line is the instantaneous trouble, the above four evidences judge the trouble character; when the transmitting line has general instantaneous trouble, the voltage evidence judges the trouble character; when the transmitting line occurs low off voltage trouble, the compensation voltage, combination compensation and voltage evidences judge comprehensively, as to the heavy service and long-distance transmitting line or the line with parallel reactor, the phase evidence judges the trouble; if the transmitting line occurs permanent trouble, judge whether carrying out reclosing operation according to the results of comprehensive judgment of the four evidence judging.
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Description

technical field

[0001] The invention relates to an automatic reclosing control method of a transmission line in a power system, in particular to a method for realizing comprehensive determination of single-phase self-adaptive reclosing of a transmission line. Background technique

[0002] Automatic reclosing technology, as one of the important measures to ensure the safe power supply and stable operation of the power system, is currently widely used in overhead transmission lines. The purpose of using automatic reclosing is to automatically put the line back into operation after the transient fault is eliminated, and restore the normal operating state of the system in the shortest time. However, the current automatic reclosing device blindly recloses after the circuit breaker trips, and it cannot judge whether the fault is a transient fault or a permanent fault. Therefore, when a permanent fault occurs, not only cannot the normal power supply of the system be restored, but ...

Claims

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