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Degaussing switch mistrip-out detecting system

A technology of detection system and demagnetization switch, which is applied in the field of power supply system of power plants, can solve problems such as unit outage and difficulty in analyzing the cause of switch tripping, and achieve the effects of improving work efficiency, reducing the scope of failure, and simple structure

Inactive Publication Date: 2018-03-13
ZHANGJIAKOU POWER GENERATION FACTORY OF DATANG INT POWER GENERATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The de-excitation switch of Zhangdian No. 5 generator is an excitation system equipment and a supporting product of Rolls-Royce. Because the switch tripped for unknown reasons, the unit was shut down, which brought great difficulties to the analysis of the cause of the switch trip.

Method used

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  • Degaussing switch mistrip-out detecting system

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Embodiment Construction

[0008] The present invention will be further explained below in conjunction with the description of the drawings.

[0009] A de-excitation switch stealing trip detection system, including: original circuit, opening coil 41TC, electric counter coil JSQHC, characterized in that: under the premise that the original circuit's opening circuit remains unchanged, the two ends of the opening coil 41TC An electric counter coil JSQHC is connected in parallel, and the control voltage of the opening circuit is 220V DC; the operating voltage of the electric counter coil JSQHC is 121V and the coil resistance is 16.9KΩ. After the electric counter coil JSQHC is connected in parallel with the opening coil, the operating voltage is 103V and the total resistance is 78.5Ω.

[0010] The counter installation position of the invention is reasonable, the wiring is simple, the implementation is convenient, and the reliability of the correct opening action of the switch is improved.

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Abstract

The invention discloses a degaussing switch mistrip-out detecting system comprising an original circuit, an opening coil 41TC, and an electric counter coil JSQHC, and characterized in that the openingcoil 41TC is connected in parallel with the electric counter coil JSQHC while the opening circuit of the original circuit is not changed; the control voltage of the opening circuit is DC 220V; the electric counter coil JSQHC has operating voltage of 121V and coil resistance of 16.9K[omega]; the electric counter coil JSQHC has operating voltage of 103V and total resistance is 78.5[omega] after being connected in parallel with the opening coil. The degaussing switch mistrip-out detecting system is reasonable in counter installation position, simple in wiring, easy to implement, and improves thereliability of the correct opening of the switch.

Description

Technical field [0001] The invention belongs to the technical field of power supply systems in power plants, and specifically is a detection system for the stealing trip of a de-excitation switch. Background technique [0002] If the existing de-excitation switch trips abnormally, the circuit and mechanical causes are not clearly analyzed, and the technical problem of the de-excitation switch stealing tripping system detection and judging whether the de-excitation switch control loop or the switch mechanically jumps is solved at the same time. The problem of low opening voltage. [0003] Zhangdian No. 5 generator de-excitation switch is an excitation system equipment and is a supporting product of Rolls-Royce. The switch tripped for unknown reasons, causing the unit to stop operating, which brought great difficulties to the analysis of the cause of the switch trip. Summary of the invention [0004] The purpose of the present invention is to overcome the shortcomings of the prior ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/327
Inventor 张婷赵绪王晟春
Owner ZHANGJIAKOU POWER GENERATION FACTORY OF DATANG INT POWER GENERATION
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