| 引用本文: | 刘静佳,梅红明,刘树,于华龙,王皆庆.特高压多端混合直流输电系统阀组计划投/退控制方法[J].电力自动化设备,2019,39(9): |
| LIU Jingjia,MEI Hongming,LIU Shu,YU Hualong,WANG Jieqing.Planned valve group entry/exit control method for UHV multi-terminal hybrid HVDC system[J].Electric Power Automation Equipment,2019,39(9): |
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| 摘要: |
| 现有的阀组投入/退出控制策略只适用于特高压两端常规直流输电系统，不能适用于特高压柔性直流输电系统，更不能适用于特高压多端混合直流输电系统。为此，以乌东德电站送电广东广西工程为背景，提出基于混合桥模块化多电平换流器的阀组计划投入/退出控制方法，并对现有常规直流阀组计划投/退控制方法进行改进。在RTDS仿真试验平台上进行硬件闭环测试，结果表明所提阀组计划投入/退出控制方法能够平稳、快速地完成特高压多端混合直流输电系统阀组的计划投/退。 |
| 关键词: 特高压直流 多端混合直流输电系统 柔性直流零压解锁 阀组计划投/退 改进的阀组投/退控制 |
| DOI：10.16081/j.epae.201909032 |
| 分类号:TM721 |
| 基金项目:国家重点研发计划项目(±800 kV/5 000 MW特高压柔性直流换流阀关键装备研发)(2016YFB0901003) |
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| Planned valve group entry/exit control method for UHV multi-terminal hybrid HVDC system |
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LIU Jingjia, MEI Hongming, LIU Shu, YU Hualong, WANG Jieqing
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Beijing Sifang Automation Co.,Ltd.,Beijing 100085, China
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| Abstract: |
| The existing valve group entry/exit control strategies are only suitable for two-terminal LCC-UHVDC(Line Commutated Converter Ultra-High Voltage DC) transmission system, but cannot be used in VSC-UHVDC(Voltage Source Converter Ultra-High Voltage DC) transmission system and multi-terminal hybrid UHVDC transmission system, for which, based on the background of the project transmitting power from Wudongde power station to Guangdong and Guangxi, a planned valve group entry/exit control method based on hybrid bridge MMC(Modular Multilevel Converter) is proposed, and the existing planned valve group entry/exit control method for LCC-HVDC is improved. The hardware closed-loop test is performed in RTDS simulation test platform, and results show that the proposed method can smoothly and quickly complete the planned valve group entry/exit in multi-terminal hybrid UHVDC transmission system. |
| Key words: UHVDC multi-terminal hybrid HVDC system zero voltage deblock of MMC planned valve group entry/exit improved valve group entry/exit control |
