童力,何立群,赵建文,吕春美,范学良,王笑棠
TONG Li,HE Liqun,ZHAO Jianwen,LYU Chunmei,FAN Xueliang,WANG Xiaotang

• 1:国网浙江省电力有限公司电力科学研究院
• 2:苏州大学轨道交通学院
• 3:国网浙江省电力有限公司丽水供电公司

摘要(Abstract)：

MCR在电网电压的稳定性改善、无功补偿等方面发挥着重要的作用。准确获取电网电压基波的相位信息是提高MCR的无功控制精度的前提。针对单相MCR,提出采用基于SOGI构造虚拟正交信号,将应用于三相系统中SRF-PLL方法扩展至单相系统,从而准确获取电网电压基波相位作为MCR触发控制的同步信号。通过仿真,验证了工作电压包含谐波的非理想情况下基于该锁相环能保证MCR正常运行。该方法可应用于牵引供电等单相需要供电无功补偿的场合。
The magnetic-valve controllable reactor(MCR) is playing an important role in grid voltage stability improvement and reactive power compensation for power system. To ensure accurate control of MCR, it is vital to obtain the phase information of the fundamental voltage of the power grid. For single-phase MCR, a virtual orthogonal signal based on SOGI(second-order generalized integral) is proposed, and the SRF-PLL method applied in three-phase system is extended to a single-phase system so that the fundamental phase of the grid voltage can be accurately obtained as the synchronization signal of the MCR trigger control. Through simulation, it is verified that the PLL method can guarantee the normal operation of the MCR under the nonideal condition that the operating voltage contains harmonics. This method can be applied to traction power supply and other single-phase applications that require reactive power compensation.

关键词(KeyWords)： 磁阀式可控电抗器;锁相环;二阶广义积分器;无功补偿
magnetic valve controlled reactor;phase-locked loop;second-order generalized integral;reactive compensation

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司科技项目(5211DS170019)

作者(Author): 童力,何立群,赵建文,吕春美,范学良,王笑棠
TONG Li,HE Liqun,ZHAO Jianwen,LYU Chunmei,FAN Xueliang,WANG Xiaotang

DOI: 10.19585/j.zjdl.201804003

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