Evaluation of Switching Concerns Associated with 345 kV Shunt Capacitor Applications

This paper presents the most significant results of a comprehensive Transient Network Analyzer study evaluating approximately 2500 MVAr of 345 kV switched capacitor banks throughout central eastern and southeastern New York. The study evaluated various concerns associated with switched shunt capacitor applications. These concerns include transient overvoltages at the switched capacitor and other locations during normal and abnormal capacitor bank switchings. The paper evaluates surge arrester duties, switching device requirements, current limiting reactors, and design requirements to avoid possible severe overvoltages.