Development and Research of Grid Short-Circuit Capacity Tester
The short-circuit capacity is a key parameter required for power system operation and control. This paper proposes a method for measuring the short-circuit capacity of bus in power grid by the non-fault disturbance caused by switching shunt capacitors. The short-circuit capacity can be calculated accurately by the proposed measuring principle. Based on this, a prototype is developed for field testing and research. In this paper, it establishes models for substation bus measurements based on MATLAB/Simulink and RTDS. The simulation analysis of various situations shows that the measurement error of the results of this developed short-circuit capacity tester is less than 5%, which is easy to use technically.
KeywordsPower systems Short-circuit capacity Real-time simulation
The authors gratefully acknowledge the support of the National Natural Science Fund of China (51567005) and Guizhou Province Joint Fund Project (LH7230, 5788). Guizhou Science and Technology Innovation Talents Team Project 5615.
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