Power transmission line backup protection method based on wide area information
A transmission line and backup protection technology, which is applied in the field of transmission line backup protection based on wide-area information, can solve the problems of few researches on backup protection, and achieve the effect of simple and reliable protection method, high safety and stability, and accurate fault removal
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[0029] The present invention will be further described below in conjunction with the accompanying drawings.
[0030] like Figure 1-Figure 3 As shown, a transmission line backup protection method based on wide-area information, the protection method includes the following steps:
[0031] Step 1. Phasor measurement unit PMU or digital substation acquisition system collects the current at both ends of the transmission line connected to the substation and adjacent substations and bus voltage where m is the number of substations, U · 1 ′ = U · 2 ′ = · · · = U · m ′ = U · ;
[0032] ...
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