A Transmission Line Pilot Protection Method Based on Kendall Tau Coefficient
A transmission line, longitudinal protection technology, applied in circuit devices, emergency protection circuit devices, measuring electricity and other directions, can solve problems such as identifying faults
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[0101] Use PSCAD / EMTDC software to build an IEEE 10-machine 39-node system, such as figure 2 shown. figure 2 middle, Represent generator, T1~T9 represent transformer, B 1 ~B 39 is the serial number of each busbar, L 1 ~ L 33 is the number of each line, the system voltage level is 345kV, the frequency is 60Hz, and the sampling frequency is 3kHz. Set the fault in the IEEE 10-machine 39-node system, take out the fault data, and program in MATLAB to realize the protection algorithm.
[0102] (1) Validation of the algorithm
[0103] In order to verify the effectiveness of the proposed method, the figure 2 In the shown IEEE10 machine 39 node test system, set the line L 19 at distance from bus B 18 A two-phase ground fault (ABG) occurs at 0.3s at k1 point at 95% of image 3 and Figure 4 Give the fault line L respectively 19 and the adjacent normal line L 18 Phase A characteristic sequence waveforms at both ends.
[0104] At the fault instant, the fault line L 19 T...
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