新型谐振型混合有源电力滤波器及其在中高压变电站中的应用

分析了几种典型混合有源滤波器的优缺点和适用范围,在此基础上提出了新型谐振型混合有源电力滤波器(ResonantTypeHybridActivePowerFilter,RTHAPF),其有源部分先通过耦合变压器与基波串联谐振电路并联,再与无源部分串联,从而使得APF不承受基波电压,这样的拓扑结构使得RTHAPF兼具较大容量的无功静补能力和较小的逆变器容量。文中介绍了该滤波器的结构特点和滤波原理,并通过现场运行情况验证了该装置的可行性。

Application of a Novel Type of Hybrid Active Power Filter in Medium and High Voltage Substations

The merits,demerits and applicability of several typical hybrid active power filters are analyzed.On this basis a novel resonant type of hybrid active power filter(RTHAPF) is proposed.The active part of the RTHAPF is firstly connected in parallel with series fundamental harmonic resonance circuit via coupling transformer,then connected in series with reactive part,therefore the APF does not bear fundamental harmonic voltage and such a structure makes the RTHAPF possessing both higher static compensation capacity of reactive power and less capacity of inverter.Here,the structural features and filtering principle of RTHAPF is presented and the feasibility of this device is verified by on-site operating condition.