基于Zigzag变压器的交直流叠加输电线路特性研究
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引用本文:李泓骏, 彭寒梅, 李泽兰, 李湾.基于Zigzag变压器的交直流叠加输电线路特性研究[J].计算技术与自动化,2016,(2):1-6
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作者单位
李泓骏, 彭寒梅, 李泽兰, 李湾 (1.智能计算与信息处理教育部重点实验室(湘潭大学)湖南 湘潭4111052. 湖南大学 电气与信息工程学院湖南 长沙410082) 
中文摘要:基于Zigzag变压器的交直流叠加输电技术,能有效解决直流功率注入普通变压器二次侧易引发的直流偏磁问题,可较大程度提高现有交流输电网络的输电能力,实现交直流功率的灵活传输。给出基于Zigzag变压器的交直流叠加输电系统的拓扑结构及输电原理,分析Zigzag变压器避免磁饱和的机理;与纯交流输电方式比较下,研究交直流叠加输电系统线路的稳态运行特性,得出系统满足一定电气条件时,该系统具有更小的电压降和功率损耗。搭建交直流叠加输电系统仿真模型,仿真结果表明研究得出的特性的正确性。
中文关键词:交直流叠加输电  Zigzag变压器  直流偏磁  特性  仿真
 
Research on the Superposed AC and DC Transmission Line Characteristics Based on Zigzag Transformer
Abstract:The superposed AC and DC transmission technology based on Zigzag transformer can effectively solve DC bias problem easily triggered when DC power is injected into ordinary transformer secondary side, which can promote the transmission capacity of the existing AC lines, and effectively achieve a flexible power transmission with AC and DC power. The topology and transmission principle of the superposed AC and DC transmission system were analyzed and the principle of Zigzag transformer avoiding magnetic saturation was also analyzed. Compared with the AC transmission method, the steady-state operating characteristics of the superposed AC and DC transmission system were studied. When the system satisfies certain electrical conditions, the system has a smaller voltage drop and power loss. Simulation research on the superposed AC and DC transmission system was carried out, and the simulation results show the correctness of it.
keywords:superposed AC and DC transmission  Zigzag transformer  DC bias  characteristics  simulation
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