Substation Cable Laying Schedule Based on GIM 3D Model

Cable laying technology for power distribution projects: take 500KV ultra-high voltage cable as an example

“…At the same time, due to the small voltage drop caused by the local loss of super, the measurement accuracy is difficult to ensure, and susceptible to electromagnetic noise interference, low reliability. Literature [4] according to the superconducting cable normal operation, the shield layer current and conductor layer current phase difference is 180 °, and the occurrence of local loss of super fault, the above two phase difference will deviate from 180 °, which leads to the leakage field current and the conductor layer current phase difference occurs a large change in the leakage field-conductor layer current phase difference of the loss of super detection method is proposed [4] . This method can effectively detect the local loss of superconducting cable faults, but it needs to measure the current of the conductor layer, shielding layer and leakage magnetic field separately, and the measurement accuracy of the current transformer is required to be very high, so it is difficult to realize the project.…”