Research On Relay And Electrical Characteristics For 750kV Compact Transmission Line With Double Circuits On A Same Tower

750kV compact transmission line with double circuits on a same tower have some special technical problems.Close analysis of Electrical characteristics should be made about this 750kV Compact Transmission Line.On the basis of close analysis above,we shoud do research on the principle of relay protection, configuration and program implications.It has important theoretical and practical value.Based on the the parameters of the 750 kV system provided by some grid company, we model electromagnetic transient simulation and analysis for it.Using PSCAD /EMTDC simulation software,and programming for special issues,we generate a simulation of the associated line.After comparative analysis of the electrical characteristics and failure of the project and finding out the cause of the problem,we take a special analysis report about this line.On the basis of this report,We propose new special requirements for relay protection and reclosing.