特高压柔直阀控系统链路延时分析与测试研究
胡煜, 陈俊, 邹常跃 and 2 more
全球能源互联网 · 2020
doi:10.19705/j.cnki.issn2096-5125.2020.02.010 (opens in a new tab)
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Abstract
模块化多电平换流器高压直流输电（modular multilevel converter based high voltage direct current，MMCHVDC）系统中链路延时对系统动态性能影响较大，如果延时设计不合理，会导致系统的稳定性变差。随着电压等级的提升，子模块数量相应增加，如何降低控制及保护的延时成为挑战。研究分析昆柳龙直流工程柳北换流站极1换流阀阀控下行、过流保护和上行3种链路延时的组成，提出了相应的测试方法，完成测试并提出优化方向。阀控下行、过流保护和上行链路延时分别小于40 μs、60 μs、60 μs，在现有硬件水平下已达到设计预期，满足现有控制链路延时需求。
Abstract licence: CC BY-NC-ND
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