Abstract
To judge system performance of a power network, the neutral point grounding method is a very important one of various contrast factors, and it reflects the voltage level. During the period around 1980, the capacity of my country's power network increased significantly and progressed rapidly. Especially after a large number of cables were put into use, a grounding method adopted by more people-grounding through the neutral point of the arc suppression coil, successively Used in many large cities in my country. This paper is discussing the more effective operation mode of the medium and low voltage power network. The arc overvoltage of the system operating in different grounding modes is explained theoretically. Realize the arc suppression coil to automatically compensate the short-circuit current to ensure that the system is reliable and runs as required. In view of the incomplete reliability of resonance grounding, the neutral point parallel resistance grounding method is proposed, and simulates it in the Simulink simulation software of MATLAB.so that the line can be correctly selected and tripped in the case of a permanent fault, so that the fault can be treated positively.
Published Version
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