Title: Circuit-breaker operation interface module of relay protector for power system
Application Number: 200610041581 Application Date: 2006.09.15
Publication Number: 1941534 Publication Date: 2007.04.04
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02H7/22;H03K17/00
Applicant(s) Name: Shenkeboye Power Automation Co., Ltd., Nanjing Address:
Inventor(s) Name:
Attorney & Agent: tangzhi wu wangpeng xiang
Abstract:
    A breaker operation tie-in module for electric power system relay protection relates to closing holding relay and cutting holding relay. They are made up of a diode bridge, a diode group and a direct current relay. The diode bridge is the inlet end of relay connecting with the diode group whose homopolarity is connecting in series, and the loop of direct current relay is connecting with diode group in parallel connection. The number of diode of the diode group is satisfying the next conditions: when the diode group is open, the procreant voltage drop is bigger or equal to the voltage of drive direct current relay. It also owns closing closedown relay made up of a diode bridge, a steady voltage tube, a direct current relay and a limit-current resistance. The diode bridge is the inlet end of relay connecting with the steady voltage tube, while the loop of direct current relay connects with the steady voltage tube in parallel connection. This invention solves the problem of the normal breaker operation tie-in and can be used for both alternating current and direct current with all kinds of current.
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