overvoltage

In a10kV distribution system,when shunt ca-pacitors are switched off by vacuum circuit breakers,restrike overvoltage often occurs.

电力系统中使用真空断路器切除无功补偿用联电容器时,容易产生电压,严影响联电容的安全。

Moreover, the proposed control system is of some fault diagnosis and protection functions, such as overcurrent, overvoltage-undervoltage, overtemperature and parameter overrun.

时，该电源控制系统还具有流、欠压、热、参数超限等故障诊断与保护功能。

This paper describes the mechanism that multiple reignition of breaker can restrain or increase progressively the switching-overvoltage during switching off inductive or capacitive load.

论述了开关在开断感性或容性负载时多次对电压的抑制或递升机理。

Multiple reignition makes the frequency and amplitude of overvoltage increase and might do harm to transformer coils by cumulative effects for its surge steepness.

多次使得电压频率和幅值均升高，会对变压器等绕组型设备绝缘造成危害。