Device and method for locking and automatic reclosing for tower-falling fault detection

Abstract

The invention discloses a device and a method for locking and automatic reclosing for tower-falling fault detection. The device comprises an iron tower monitoring and locking signal transmitting unit and a locking signal receiving unit, wherein the iron tower monitoring and locking signal transmitting unit is arranged at the top end of an iron tower; the locking signal receiving unit is arranged in a substation; the iron tower monitoring and locking signal transmitting unit comprises a tilting angle sensor, an acceleration sensor, a 433MHz wireless communication module, a high-voltage electricity fetching and energy storing device and a micro-controller; the micro-controller is used for sending an automatic reclosing and locking signal to the locking signal receiving unit through the 433MHz wireless communication module; the locking signal receiving unit is used for receiving the automatic reclosing and locking signal sent by the 433MHz wireless communication module, and sending to a protection device in the substation to complete the locking and reclosing actions. The device has the advantages that when the tower-falling fault occurs, the device can timely lock and reclose, so as to prevent the damage of the other electric equipment caused by multiple times of short-circuiting current, and reduce the impact on a power system; the application prospect is good.

Description

technical field [0001] The invention relates to the technical field of relay protection, in particular to a locking and automatic reclosing device and method for detecting tower collapse faults. Background technique [0002] In the power system, the line reclosing device operated on site cannot judge whether the fault is an instantaneous fault or a permanent fault. After the protection trips, the circuit breaker will be reclosed after a predetermined delay. on, resulting in unsuccessful re-registration. If it overlaps on a permanent fault, the power system will be impacted by the fault current again, making the working condition of the circuit breaker worse. The most typical permanent faults are tower collapse faults and disconnection faults. For iron towers near substations, if tower collapse faults occur, due to the short distance from the substation, the short-circuit current is large when a fault occurs, and the impact on the transformer is particularly large. [0003]...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the current problem that if a tower collapse occurs in the vicinity of a substation, due to the short distance from the substation, the short-circuit current is large when a fault occurs, and the impact on the transformer is particularly large.

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