550kV超长距离GIS电压互感器现场校验用工频谐振升压电源研究

在巨型水力发电站550kV超长距离GIS电压互感器现场误差校验中,升压是较难解决的问题,其关键技术是工频谐振电源系统的选用、组合与控制。介绍了一种550 kV超长距离GIS电压互感器现场误差校验用组合式工频谐振电源系统,其谐振电抗器采用小型固定电抗器与可调电抗器组合的方式,可实现对电容量范围为1000 pF~40 000 pF的550 kV GIS一次回路的工频谐振升压,为电压互感器现场校验或其他试验提供了升压电源。实际应用结果表明,这种电源系统灵活、轻便,组合与控制及适应性能强,具有较高的实用价值。

Study on Power Frequency#$NBSResonant Boost#$NBSPower Supply#$NBSin on-site calibration of 550kV Long Distance#$NBSGIS Voltage Transformer#$NBS

SVoltage boosting is a difficult problem when it comes to the on-site calibration of 550kV long distance GIS voltage transformer in giant hydroelectric power station. The choice, combination and control of power frequency resonant power supply are key technique to solve the problem of boosting. This paper introduced a power frequency resonant power supply system which is used in the on-site calibration of 550kV long distance GIS voltage transformer. The resonant reactor of the power supply consists of small fixed reactor and controllable reactor. The power supply can realize the power frequency voltage resonant boosting of550kV GIS primary circuit in a capacitance range of 1000pF to 40000pF and can be used as a boosting power supply for on-site voltage transformer calibration and other experiments. The application results show that the power supply system has properties of flexible, light-weight, combination control, strong adaptability and high practical value.