Directional overcurrent protection is used when it is necessary to protect the system against fault currents that could circulate in both directions through a system element, and when bi-directional ...
Therefore, in generation protection it is important to have voltage control on the overcurrent time-delay units to ensure proper operation and co-ordination. These devices are used to improve the ...
Recently, the State Grid Suqian Power Supply Company, in the 220kV new Siyang substation commissioning and start-up project, piloted the use of a whole-station simulated on-load test and the ...