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- W2386243310 abstract "The accuracy of parameters related to transmission line has great influence on the correct action of protection devices.In HVDC,once OPGW and ground wire breakdown caused by voltage induced by fault current,multipoint grounding of OPGW and ground wire will have influence on the zero-sequence parameters of line.The variation of zero-sequence parameters will have big impact on the relay protection.In this paper,the influence of OPGW and multipoint grounding of grounding wire on relay protection is analyzed when cable OPGW and grounding wire are breakdown by voltage induced by fault current.The zero-sequence current becomes smaller when short circuit fault occurs,but the variation magnitude is small.When single-phase earth fault occurs,the modulus and phase-angle of measured resistor are become smaller with the magnitude within 9%.And if factors such as the error of relay and transformer are considered,the performance of distance relay protection will have great difference." @default.
- W2386243310 created "2016-06-24" @default.
- W2386243310 creator A5014287651 @default.
- W2386243310 date "2012-01-01" @default.
- W2386243310 modified "2023-09-28" @default.
- W2386243310 title "The Impact of Single-point Grounding Mode of OPGW Section Insulation on Relay Protection" @default.
- W2386243310 hasPublicationYear "2012" @default.
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