Status monitoring method for spark gap trigger circuit

A spark gap and trigger circuit technology, which is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc., can solve the problems of spark gap circuit fault analysis, on-site debugging and maintenance difficulties, weak device status monitoring function, and the inability to realize spark gap trigger circuit Condition monitoring and other issues, to facilitate on-site debugging and maintenance, and to solve the effect of fault location
CN102608459AActive Publication Date: 2012-07-25CHINA EPRI SCIENCE & TECHNOLOGY CO LTD +2
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA EPRI SCIENCE & TECHNOLOGY CO LTD
Publication Date
2012-07-25

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Abstract

The invention provides a status monitoring method for a spark gap trigger circuit, which includes the steps: monitoring normality of a path of signal transmitted by a control protector; detecting the status of a trigger instruction output end of a programmable device logic circuit or the status of a trigger output end of a spark gap trigger device; subjecting the detected status signals to digital filtering; broadening narrow-pulse status signals obtained by filtering; and allowing a programmable device to transmit collected status marking signals to the control protector. By the method, the status of the gap trigger circuit can be determined timely and accurately; transient trigger pulse is detected at the trigger output end of the spark gap trigger device; transient status information is reliably transmitted to the control protector in milliseconds; and accordingly the problem of locating failure of the spark gap trigger circuit is well solved, and field debugging and maintenance of the spark gap circuit are facilitated greatly.
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Description

technical field

[0001] The invention belongs to the technical field of power systems and power electronics, and in particular relates to a spark gap trigger circuit state monitoring method. Background technique

[0002] At present, suppliers of series compensation devices include ABB, GE, Siemens and China Electric Power Research Institute. These four units can all produce spark gaps, but the principles of triggering ignition are different, and the principles of corresponding spark gap triggering devices are also different.

[0003] The control and protection device of the series capacitor consists of metal oxide voltage limiter MOV (Metal Oxide Voltage Limiter), forced trigger spark gap, damping circuit and bypass circuit breaker. Metal Oxide Voltage Limiter MOVs limit the voltage level across series capacitors during system faults; forced spark gaps are compensated by fixed series capacitors when Metal Oxide Voltage Limiter MOVs absorb too much energy or in cases where fa...

Claims

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