An intelligent verification method for relay protection pressed board
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Abstract:
The position of relay pressed boards is generally associated with primary device operating mode. When the primary device operating mode changes, sometimes it’s necessary to accordingly change the position of pressed board. Indeed, the misoperation of pressed board has led to many accidents. To avoid this failing, from the perspective of primary device state and operation mode, an intelligent verification method for relay protection pressed board is proposed on the basis of collecting the position information of pressed boards. Through the relationship between relay protection and automatic devices pressed board setting rules and state of primary devices, a primary device-pressed board position rulebase is generated. When substation switching operation occurs, the device will automatically recognize primary device state and compare the state with the information in the rulebase, and it will give alarm signal when the comparison does not match. A real test of transformer operational processes is carried out, and the result shows that the intelligent verification method is effective.
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Supported by the Key Project of Chongqing Science & Technology Commission (CSTC2012gg-yyjsB90003).
