Dry reactor turn-to-turn short circuit fault protection device and method

A technology of inter-turn short-circuit fault and dry-type reactor, which is applied to emergency protection circuit devices, measuring devices, instruments, etc., can solve the problems of dry-type reactor burning, loss, and affecting the safe operation of power stations, so as to avoid burning accidents, The effect of ensuring circuit safety

Pending Publication Date: 2019-01-25
XIAN XINDONGYUAN ELECTRICAL
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Problems solved by technology

[0002] So far, many substations and converter stations have experienced severe burnout accidents of dry-type reactors, including ultra-high voltage, ultra

Method used

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  • Dry reactor turn-to-turn short circuit fault protection device and method

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Embodiment 1

[0025] like figure 1 As shown, the dry-type reactor turn-to-turn short-circuit fault protection device of this embodiment includes a monitoring host, a data acquisition module, a voltage transformer, a current transformer, a warning light and a reactor circuit breaker;

[0026] The voltage transformer includes A-phase voltage transformer, B-phase voltage transformer and C-phase voltage transformer, and the current transformer includes A-phase current transformer, B-phase current transformer and C-phase current transformer;

[0027] A coherent reactor, B coherent reactor and C coherent reactor are all connected to the main circuit, and a reactor circuit breaker and a reactor isolation switch are set between the main circuit;

[0028] The data acquisition module is connected with three voltage transformers and three current transformers. The data acquisition module maintains a communication connection with the monitoring host. The data acquisition module is integrated with an al...

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Abstract

The invention discloses a dry reactor turn-to-turn short-circuit fault protection device and a method thereof. The protection device comprises a monitoring host, a data acquisition module, a voltage transformer, a current transformer, an alarm device and a circuit breaker. The data acquisition module collects the voltage instantaneous value and the current instantaneous value of the dry reactor and performs FFT conversion on the voltage instantaneous value and the current instantaneous value, eliminating the effects of harmonic components of voltage and current, Then the loss ratio and inductance value of the dry reactor can be calculated accurately, and the possible short circuit of the dry reactor can be predicted according to the loss ratio and inductance value, and the alarm can be provided. At the same time, the automatic circuit breaker action can be made according to the short circuit fault, which ensures the circuit safety and avoids the burning accident of the dry reactor.

Description

technical field [0001] The invention relates to the field of circuit equipment, in particular to an inter-turn short-circuit fault protection device and method for a dry-type reactor. Background technique [0002] So far, many substations and converter stations have suffered severe dry-type reactor burnout accidents, including ultra-high voltage, ultra-high voltage substations and UHV converter stations. These accidents have seriously affected the safe operation of power stations and caused huge losses. [0003] There are many reasons for dry-type reactors to burn out. One of the common reasons for burning out is: dry-type reactor coils generally use cylindrical winding, each reactor coil is composed of multiple packages, and the turn insulation between wires is very thin , The burrs, metal debris or other foreign matter on the surface of the wire can easily penetrate the turn insulation, causing a short circuit between turns, forming a short circuit ring. As long as there ...

Claims

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Application Information

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IPC IPC(8): H02H7/00G01R31/02
CPCH02H7/00G01R31/50
Inventor 董捷陈军潮
Owner XIAN XINDONGYUAN ELECTRICAL
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