Research on Flow Transferring Identification Method Based on WAMS

Yan Xu; Han Ping

doi:10.4028/www.scientific.net/AMR.960-961.982

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 960-961Research on Flow Transferring Identification...

Research on Flow Transferring Identification Method Based on WAMS

Abstract:

In power system, flow transferring can cause non-fault overload. Traditional zone 3 distance relays cannot distinguish overload caused by faults or by transferred power flow and may operate incorrectly, thus cause cascading trips, even blackout. Based on wide area measurement system (WAMS), this paper proposes two criteria to realize flow transferring identification function. First, three-phase voltages and currents are measured and compared with those calculated before fault, which should be applied to the given identification criteria. Then, the logical relationship for flow transferring identification are put forward to prevent distance relays from incorrect behavior caused by non-fault overload and unblock zone 3 distance relays when fault occurs. Through the simulation results, the effectiveness of the proposed method is verified.

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Periodical:

Advanced Materials Research (Volumes 960-961)

Pages:

982-988

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.960-961.982

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Online since:

June 2014

Authors:

Yan Xu, Han Ping*

Keywords:

Distance Relay, Flow Transferring Identification, Overload

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* - Corresponding Author

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