有载调压装置异常时的一种对策

Countermeasures for an Abnormal Transformer with On-load Voltage Regulation

配置有载调压的变压器在有载调压开关出现异常时,为抑制恶化趋势,避免突发故障,采取了减少调压开关动作次数的措施。从理论并结合应用实际对系统的无功波动、电压偏差的关系进行了分析。调整有载调压的灵敏度后,有载调压开关日平均动作总次数下降到73%,实际证明这种方案是可行的。

A transformer with on-load voltage regulation was equipped with to restrain the worsening trend and avoid emergency events when the transformer＇ s tap changer did not function well. Measures to reduce the tap changer＇ s regulation times were taken. On the basis of the theory and the site situation, the relationship between the voltage deviation and the fluctuation of the reactive power was analysed. After the sensitivity of the on-load voltage regulation was adjusted, the average daily regulation times were reduced to 73%. This scheme was proved effective.