Abstract：In order to solve the drawbacks resulted from combined operation of multi-DFACTS, such as rising costs, reduced efficiency, negative interaction, etc. A new scattered power quality conditioner (SPQC) with parallel-series structure and corresponding control strategy with no communication are proposed in this paper, SPQC has a shunt unit on the former primary distribution feeder and series units on the latter branches. Then the paper analyzes the operation principle of SPQC and power flow in the network. SPQC has two operation modes. When the voltage at PCC is in the normal operating range, the shunt unit mainly compensates necessary reactive power for all the loads, regulate the power factor of system. When the voltage at PCC drops deeply and below the normal operating range, the series units at the sensitive load branches begin to compensate the voltage sag to maintain normal voltage condition of sensitive loads. The simulation results show that the proposed SPQC could take on high feasibility and effectiveness.
贾东强, 韦统振, 霍群海. 新型分散式电能质量调节器运行研究[J]. 电工技术学报, 2013, 28(2增): 256-261.
Jia Dongqiang, Wei Tongzhen, Huo Qunhai. Research on Operation of New Scattered Power Quality Conditioner. Transactions of China Electrotechnical Society, 2013, 28(2增): 256-261.
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