Overvoltage on-line sampler for 6-35 KV electric power system

A sampling device and power system technology, applied in emergency protection circuit devices for limiting overcurrent/overvoltage, circuit devices, measuring current/voltage, etc., can solve transient waveform deformities and make it difficult to analyze the exact cause of accidents , equipment insulation level reduction and other issues
CN1584607AInactive Publication Date: 2005-02-23席世友
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
席世友
Publication Date
2005-02-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

An on-line sampling device consists of high voltage arm including high voltage capacity, buffer resistance and insulation outer protective sheath; and low voltage arm including low voltage capacity, protective gap, subvoltage output end and metal shielded outer sheath. It has response characteristic below 15-100 nanosecond and can catch overvoltage signal in transient state with sampling voltage of 3-35kv.
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Description

Technical field

[0001] The invention relates to an online monitoring device for power system operation, and the monitoring object is overvoltage. technical background

[0002] The voltage exceeding the rated voltage of electrical equipment during the operation of the power system (due to lightning strikes or circuit switching) is called overvoltage. When overvoltage occurs during operation, the equipment will be damaged and cause a power outage. In order to prevent overvoltage damage to the equipment, overvoltage protection devices such as lightning arresters are installed. However, a large number of surge arresters and other overvoltage protection devices are installed in the 6-35KV system, and the overvoltage accident rate (damage to high-voltage equipment such as transformers or causing power outages) is still relatively high. So far, the research on the problem is only at the level of theory and laboratory simulation research, and there is no case corresponding to the a...

Claims

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