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- W2366356358 abstract "In the high voltage transmission lines,broken or burned up accidents of OPGW at both sustation terminals often occur,which threat the security of power communication. These OPGW damages are mostly caused by partial overheating due higher residual grounding currents. Several cases of broken or burned up accidents of OPGW are investigated,and the residual grounding currents at terminals are simulated and calculated by ATP-EMTP software. It is show that,for signal-circuit transmission line,if the two ground wires are both grounded at each tower,the residual grounding current is relatively lower;but if the CGW is grounded at a signal point and the OPGW is grounded at each tower,then the residual grounding current is higher and can be up to tens of Amperes in which some protective measures should be taken. For double-circuit transmission lines,the two ground wires are both grounded at each tower,the issue of residual grounding current at terminals is very prominent and protective measures should be taken. This paper gives the protective principle,i.e. disconnecting the OPGW terminal from the metal clamps. The detail protective measures how to solve the residual grounding current problem are presented to the OPGW at deflector and the remaining cable shelf." @default.
- W2366356358 created "2016-06-24" @default.
- W2366356358 creator A5076161309 @default.
- W2366356358 date "2014-01-01" @default.
- W2366356358 modified "2023-09-23" @default.
- W2366356358 title "Study on Damage Characteristic and Protective Measures of OPGW Terminal Residual Ground Current" @default.
- W2366356358 hasPublicationYear "2014" @default.
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