In order to improve the safe reliability of shunt capacitor devices, some units like to enlarge the reserved capacity, such as increasing the rated voltage of capacitor, when they choose equipment.
Power Supply System is often placed with shunt compensation capacitors and the upper harmonic waves in the distribution network have much influence on the capacity.
供配电系统通常接有并联补偿电容器，配电网中的高次谐波对电容的影响很大。
3
The power frequency overvoltage of unloaded line because of the capacity effect is studied, and the effect of eliminating power frequency overvoltage using shunt reactors is analyzed.