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Power system fault indicator

A fault indicator and power system technology, applied in the direction of instruments, measuring electricity, measuring electrical variables, etc., can solve the problem of not being able to find the fault section quickly, and achieve the effect of reducing the time and scope of power outages, and saving working time.

Inactive Publication Date: 2013-03-27
FUSHUN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +2
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Problems solved by technology

[0003] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a power system fault indicator, which solves the problem that the fault section cannot be quickly found in the prior art

Method used

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  • Power system fault indicator

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Embodiment

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] The A-phase short-circuit fault sensor, the B-phase short-circuit fault sensor, the C-phase short-circuit fault sensor and the ground fault sensor are placed in a plastic box, and the A-phase, B-phase, C-phase and ground fault sensors are equipped with sound and light alarms. A-phase short-circuit fault sensor, B-phase short-circuit fault sensor, C-phase short-circuit fault sensor and ground fault sensor are connected to the reading instrument through cables and / or optical cables; A-phase short-circuit fault sensor, B-phase short-circuit fault sensor, C-phase short-circuit fault sensor and Ground fault sensors are equipped with coils for detecting pulse currents caused by short circuits and ground faults. The reading instrument is provided with a time reset circuit and an assignment circuit; the outer surface of the shell of the readin...

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Abstract

The invention relates to a power system fault indicator. According to the structure of the indicator, A phase, B phase and C phase short circuit fault sensors and a grounding fault sensor are connected with a readout instrument through a cable and / or an optical cable and provided with coils for detecting the short circuit and earth fault and causing impulse current. The indicator can perform real-time monitoring and provide fault messages; maintenance personnel can find a fault zone quickly according to the warning signals of the indicator and break the fault zone, therefore power supply in a non-fault zone can be recovered timely, large amount of working time can be saved, and the power cut time and range can be reduced.

Description

technical field [0001] The invention relates to a device for detecting short-circuit and grounding faults, in particular to a power system fault indicator. Background technique [0002] Short circuit and ground fault indicators are devices used to detect short circuits and ground faults. In the ring network power distribution system, especially in the system that uses a large number of ring network load switches, if a short-circuit fault or a ground fault occurs in the lower-level power distribution network system, the upper-level power supply system must be repaired within the specified time. break to prevent major accidents. In the fault detection in the prior art, sometimes the section where the fault occurs cannot be quickly found, resulting in a long power outage and a wide range of power outages. Contents of the invention [0003] The present invention aims at the problems existing in the above-mentioned prior art, and provides a power system fault indicator, whic...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
Inventor 裴玉杰贾秋霞
Owner FUSHUN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY
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