A novel arc-suppression method for grounding fault in wind farm

Neutral-point non-effectively grounded system is used in the wind farm with complex structure, high cost, wide distribution and higher capacitance current. This paper presents an arc-suppression method for the neutral non-effective grounding system-voltage arc-suppression method. A reactor is directly connected to the fault bus and ground. The voltage of the reactor is used to suppress the voltage of the fault phase, to make sure it become much smaller than the amplitude of electric strength recovery, undermine the arc renewed mechanism, and remove the arc grounding. Simulation result in the paper verifies the validity and advantages of the method and it is not affected by grounding current, eliminating the complex track and compensation calculation. Arc-suppression method is simple. Especially suitable for system with high capacity current,such as cables wind farms.