Fault recognition device of high-voltage capacitance type equipment and application device thereof

Abstract

The invention discloses a fault recognition device of high-voltage capacitance type equipment and an application device thereof. The fault recognition device comprises a transceiving unit, and a processing unit and a judgment unit; the transceiving unit is used for transceiving circuit signals at a certain time of a capacitor, the circuit signals are input from the outside and input in the processing unit, and the processing unit processes the circuit signals and inputs processing results in the judgment unit; and the judgment unit judges operation conditions of the capacitor according to the results. The fault recognition device of the high-voltage capacitance type equipment and the application device of the fault recognition device can continuously monitor operation conditions of one set of high-voltage capacitance type equipment, diagnose early-stage defects, give out alarm signals in time, provide corresponding countermeasures, can guarantee operation safety of a whole group of high-voltage capacitance type equipment, and effectively improve safety economic benefit of an electric power system.

Description

Technical field [0001] The invention relates to a high-voltage parallel capacitor, in particular to a fault identification device for high-voltage capacitive equipment and its application equipment. Background technique [0002] Reactive power compensation using high-voltage parallel capacitors is the most common way to improve power factor. This compensation method has the advantages of low investment, low active power loss, and convenient operation and maintenance. However, the high-voltage shunt capacitor is a fully-loaded equipment with a large rated current. After a long time of operation, the aging of the capacitive element may cause damage to the high-voltage shunt capacitor, and even serious equipment accidents such as bulging and group explosions may occur, giving the power grid safe operation At the same time, the high-voltage shunt capacitors also bear the influence of operating overvoltage and harmonic components in the system, resulting in a higher rate of equipment ...

AI Technical Summary

Problems solved by technology

Summarizing various monitoring technologies, it is found that the existing high-voltage shunt capacitor monitoring system is not real-time and accurate enough

On the other hand, the current online monitoring system generally only monitors certain parameters of the entire set of high-voltage shunt capacitors, but it still cannot achieve the purpose of accurately judging faulty capacitors, and the actual application is relatively cumbersome.

In the long-term operation of high-voltage shunt capacitors, due to many defects and failures, the current grid maintenance operation mode cannot effectively predict equipment failures in advance, so that it is easy for a single capacitor failure to expand into a whole group of failures, and there is a large risk to the safe operation of equipment Hidden dangers affect the local support capability of reactive power and voltage

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