摘要

The paper studies voltage support role of SVC device in power system in Wuzhou, how to ensure that when there is a voltage drop, SVC device control strategy plays a supportive role to 500 kV voltage equipment. By studying the practical application of SVC device control strategy in Wuzhou substation, and control and protection system simulation test by RTDS, it tests SVC V-I characteristic curves of the actual device to compare with the theoretical value, and analyzes the relationship of slope of VI curve between reactive power reserves of the device and the system voltage support. The results show that the when slow transfer admittance slip control parameter is set to 0.02-0.03, it will greatly enhance the device's power reserve under normal operation mode, and increase SVC device performance on inhibiting voltage fluctuation.

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