High Resistance Grounding Mode and Its Application
Ping Shao · Electrical Equipment · 2005
Single - phase grounding over - voltage of arc light can still occur in 10 KV distribution power network with small capacity current (10 A betow). Through the comparison of different neutral grounding modes for distribution power network, the conclusion was reached that to adopt high resistance grounding mode is better than arc suppression coil from the point of view of economy and technology. The basis and characteristics of resonance elimination for high resistance grounding mode were analyzed, and some kinds of grounding modes were introduced, such as the coil of Z type and the high voltage resistance; the coil of Z type and single - phase grounding transformer and the tow voltage resistance. The 3 kinds of high resistance grounding protection modes were still summarized.