柔性直流输电换流阀功率单元现场测试方法研究
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摘要
[目的]在柔性直流输电工程中,换流阀功率单元及其备件需要定期进行测试和维护。功率单元工作正常是保证柔性直流输电系统安全稳定运行的重要前提。[方法]针对功率单元现场测试缺乏相关规范标准的现状,从功率单元的结构、工作机制和厂内测试项目入手,结合现场实际情况,提出了一种适用于现场的流程化的功率单元测试方法,并在该方法的基础上研制了一台可对功率单元进行自动测试的装置。[结果]所提出的测试方法和测试装置可有效提高功率单元现场测试的完备性、效率及准确性,该装置目前已在南澳多端柔性直流输电工程塑城换流站试点应用。[结论]工程实践表明:提出的测试方法贴近工程实际情况,为功率单元的运检、验收提供了有效的测试手段,也可为其他柔性直流输电工程的功率单元测试工作提供借鉴。
[Introduction]In flexible HVDC transmission systems,HVDC converter valve power modules and their spares are tested and maintained at regular intervals. The power modules in good condition are essential to assure the safe and steady operation of flexible HVDC transmission systems. [Method]Firstly the structure, working mechanism and shop test items of power modules were analyzed in view of the shortage of relevant specifications and standards for power modules on-site test. Then a power module test method suitable for actual situation on site was proposed. Based on the proposed method, a device able to test power modules automatically was developed. [Result]The proposed test method and device effectively improve the completeness, efficiency and accuracy of power module on-site test, which is applied in Sucheng converters station of Nan′ao multi-terminal HVDC flexible system. [Conclusion]The engineering practice indicates that the proposed method provides an effective way for the power module test tasks during the phase of operation, maintenance and inspection, which is close to the actual test situation on site. Moreover, the proposed method and device provide a reference for the power module test tasks of other flexible HVDC transmission systems.
[Introduction]In flexible HVDC transmission systems,HVDC converter valve power modules and their spares are tested and maintained at regular intervals. The power modules in good condition are essential to assure the safe and steady operation of flexible HVDC transmission systems. [Method]Firstly the structure, working mechanism and shop test items of power modules were analyzed in view of the shortage of relevant specifications and standards for power modules on-site test. Then a power module test method suitable for actual situation on site was proposed. Based on the proposed method, a device able to test power modules automatically was developed. [Result]The proposed test method and device effectively improve the completeness, efficiency and accuracy of power module on-site test, which is applied in Sucheng converters station of Nan′ao multi-terminal HVDC flexible system. [Conclusion]The engineering practice indicates that the proposed method provides an effective way for the power module test tasks during the phase of operation, maintenance and inspection, which is close to the actual test situation on site. Moreover, the proposed method and device provide a reference for the power module test tasks of other flexible HVDC transmission systems.
引文
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[9] 许彬,王平,李子欣,等.模块化多电平换流器阀段运行试验方法研究 [J].电工电能新技术,2016,35(7):24-30.XU B,WANG P,LI Z X,et al.Research on operational test method for modular multi-level converter valves [J].Advanced Technology of Electrical Engineering and Energy,2016,35(7):24-30.
[10] 欧阳有鹏,谢晔源,朱铭炼,等.换流阀子模块IGBT短路测试系统分析与设计 [J].电力工程技术,2018,37(4):109-113.OUYANG Y P,XIE Y Y,ZHU M L,et al.Analysis and design of IGBT short circuit test system for sub modular of converter valve [J].Electric Power Engineering Technology,2018,37(4):109-113.
[2] 许树楷,罗雨.背靠背输电系统中柔性直流与常规直流的协调控制策略 [J].南方能源建设,2016,3(2):9-15.XU S K,LUO Y.Study on coordination control strategy of VSC/LCC BtB HVDC [J].Southern Energy Construction,2016,3(2):9-15.
[3] 许义佳,罗映红,史彤彤,等.具有直流故障自清除能力的新型MMC子模块及其混合拓扑 [J].电力系统保护与控制,2018,46(7):129-137.LIU Y J,LUO Y H,SHI T T,et al.A new MMC sub-module with DC fault self-clearing ability and its hybrid topology [J].Power System Protection and Control,2018,46(7):129-137.
[4] 李金科,金新民,吴学智,等.模块化多电平变流器模块电压纹波抑制策略及应用 [J].中国电机工程学报,2016,36(7):1892-1899.LI J K,JIN X M,WU X Z,et al.Strategy and application of reducing capacitor voltage ripples in modular multilevel converters [J].Proceedings of the CSEE,2016,36(7):1892-1899.
[5] 蒋霖,周诗嘉,李子寿,等.可仿真任意工况的MMC等值电磁暂态仿真模型与平均值模型 [J].南方电网技术,2016,10(2):10-17.JIANG L,ZHOU S J,LI Z S,et al.Equivalent electromagnetic model and averaged value model of MMC for operating condition simulation [J].Southern Power System Technology,2016,10(2):10-17.
[6] 杨海倩,王玮,荆龙,等.MMC-HVDC系统直流侧故障暂态特性分析 [J].电网技术,2016,40(1):40-46.YANG H Q,WANG W,JIN L,et al.Analysis on transient characteristic of DC transmission line fault in MMC based HVDC transmission system [J].Power System Technology,2016,40(1):40-46.
[7] 杨超,梁海平,顾雪平,等.基于电压源换流器HVDC联网的受端电网扩展黑启动方案 [J].电工技术学报,2017,32(22):207-215.YANG C,LIANG H P,GU X P,et al.The recovery strategy of the extended black-start for the receiving end system based on the voltage source converter-HVDC [J].Transactions of China Electrotechnical Society,2017,32(22):207-215.
[8] 吴亚楠,吕天光,汤广福,等.模块化多电平VSC-HVDC换流阀的运行试验方法 [J].中国电机工程学报,2012,32(30):8-15+4.WU Y N,LV T G,TANG G F,et al.An operational test method for VSC-HVDC valves based on modular multi-level converters [J].Proceedings of the CSEE,2012,32(30):8-15+4.
[9] 许彬,王平,李子欣,等.模块化多电平换流器阀段运行试验方法研究 [J].电工电能新技术,2016,35(7):24-30.XU B,WANG P,LI Z X,et al.Research on operational test method for modular multi-level converter valves [J].Advanced Technology of Electrical Engineering and Energy,2016,35(7):24-30.
[10] 欧阳有鹏,谢晔源,朱铭炼,等.换流阀子模块IGBT短路测试系统分析与设计 [J].电力工程技术,2018,37(4):109-113.OUYANG Y P,XIE Y Y,ZHU M L,et al.Analysis and design of IGBT short circuit test system for sub modular of converter valve [J].Electric Power Engineering Technology,2018,37(4):109-113.