Fault on-line monitoring device of high-voltage breaker and monitoring method thereof

A technology for high-voltage circuit breakers and monitoring devices, which is applied in the direction of circuit breaker testing, measuring devices, instruments, etc., and can solve problems such as inability to effectively monitor high-voltage circuit breaker mechanism failures

Active Publication Date: 2016-03-16
GUIZHOU POWER GRID CO LTD ZUNYI POWER SUPPLY BUREAU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an on-line monitoring device and monitoring method for high-voltage circuit breaker mechani

Method used

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  • Fault on-line monitoring device of high-voltage breaker and monitoring method thereof
  • Fault on-line monitoring device of high-voltage breaker and monitoring method thereof
  • Fault on-line monitoring device of high-voltage breaker and monitoring method thereof

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Embodiment Construction

[0095] An on-line fault monitoring device for a high-voltage circuit breaker mechanism, which includes a controller, an opening Hall current transformer, a closing Hall current transformer, and a normally open contact of a high-voltage circuit breaker auxiliary switch connected to the controller wire, and the controller Connect to display terminal.

[0096] The controller is a STC12C5A60S2 sampling and computing single-chip microcomputer, and the display terminal is a 19264 liquid crystal display.

[0097] The through holes of the opening Hall current transformer and the closing Hall current transformer pass through the opening circuit connection line and the closing circuit connection line respectively; the opening Hall current transformer and the closing Hall current transformer are externally Both are covered with a metal shield.

[0098] The invention adopts the anti-interference DC power supply to supply the DC power to the liquid crystal display screen, the sampling and...

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Abstract

The invention discloses a fault on-line monitoring device of a high-voltage breaker and a monitoring method thereof. An opening Hall current transformer, a closing Hall current transformer and the normally-opened contact of a high-voltage breaker auxiliary switch are connected with a controller via wires. The controller is connected with a display terminal. The monitoring method comprises steps of acquiring data; calculating basic data; judging direct-current grounding faults of a high-voltage breaker mechanism and turn-to-turn short circuit faults of electromagnetic coils; judging the 'opened-after-closed' fault of the circuit breaker caused by a failure to keep an opening tripper of the high-voltage breaker mechanism to be closed; judging the fault of a failure of restoration caused by deformation of a reset spring of the high-voltage breaker mechanism; judging the jam fault of the tripper of the high-voltage breaker mechanism; and judging the jam fault of an iron core of an electromagnet. The fault on-line monitoring device is simple in structure and high in measuring precision; data is precise; the calibration method is simple and easy; and technical problems in the prior art are overcome.

Description

technical field [0001] The invention belongs to the fault detection technology of a high-voltage circuit breaker, and in particular relates to an on-line monitoring device and a monitoring method for a mechanism fault of a high-voltage circuit breaker. Background technique [0002] Power system substations experience 10kV and 35kV high-voltage circuit breaker mechanism failures every year, resulting in refusal to open or close, leading to fault leapfrogging, expanding the scope of power outages, and bringing a lot of economic losses and adverse social impacts to units and society. Because the fault has the characteristics of rapid development of equipment during operation, it will generally appear in 1 to 2 years, while the circuit breaker periodic preventive test used in the prior art is generally carried out in 3 to 6 years, so it cannot Fully control the occurrence of such failures. In addition, the BLK type spring operating mechanism of the 220kV circuit breaker in each...

Claims

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Application Information

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IPC IPC(8): G01R31/327
CPCG01R31/3275
Inventor 甘毅毛健郑平杨代明杨波何维李肃李锦罗智燃潘航王永洪
Owner GUIZHOU POWER GRID CO LTD ZUNYI POWER SUPPLY BUREAU
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