电气技术  2022, Vol. 23 Issue (5): 1-8    DOI:
研究与开发 |
多端柔性直流输电系统的自适应下垂控制策略研究
白国岩1, 李春宝2, 孟繁丞2, 李沐书2, 马文忠2
1.中铁十六局集团电气化工程有限公司,北京 100018;
2.中国石油大学(华东),山东 青岛 266580
Research on an adaptive droop control strategy applied in voltage source converter based multi-terminal high voltage direct current transmission system
BAI Guoyan1, LI Chunbao2, MENG Fancheng2, LI Mushu2, MA Wenzhong2
1. China Railway 16th Bureau Group Electrification Engineering Co., Ltd, Beijing 100018;
2. China University of Petroleum (East China), Qingdao, Shandong 266580
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摘要 直流电压稳定是多端柔性直流输电(VSC-MTDC)系统控制的关键问题之一。针对传统下垂控制策略参数不易整定、控制精度低、难以应对多种工况等缺点,本文提出一种自适应下垂控制策略,首先结合系统潮流分析结果和换流站功率分配设计下垂系数稳态值,并依据换流站本地电气量引入自适应改变下垂参数的控制律,使下垂系数可根据不同工况进行调节优化,并有效降低暂态过程中的功率振荡。在PSCAD/EMTDC中搭建四端VSC-MTDC模型进行算例验证,仿真结果证明,本文所提改进自适应下垂控制策略能有效提升换流站在不同工况下的性能,提升系统的灵活性和可靠性。
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白国岩
李春宝
孟繁丞
李沐书
马文忠
关键词 多端柔性直流输电下垂控制直流电压控制自适应控制电压源型换流器    
Abstract:The stability of DC voltage has become the key issue of voltage source converter based multi-terminal high voltage direct current transmission (VSC-MTDC) system. In order to overcome the drawbacks of conventional droop strategy in term of complexity of parameters tuning, low control accuracy and lack of flexibility in various circumstances, an improved adaptive droop strategy is proposed in this paper. The droop parameters are designed based on the optimal analysis of load flow and power sharing of the VSC-MTDC system and adjusted adaptively by the control law which is related to local electrical quantities. A four-terminal VSC-MTDC simulation model is built in PSCAD/EMTDC and the results of simulations prove that the proposed droop strategy can promote the performance of the VSC converter under different operating conditions and enhance the flexibility and reliability of the system.
Key wordsvoltage source converter based multi-terminal high voltage direct current transmission (VSC-MTDC)    droop control    DC voltage control    adaptive control    voltage source converter (VSC)   
收稿日期: 2022-01-04     
基金资助:国家自然科学基金项目(51777216); 山东省自然科学基金项目(ZR2018MEE040)
作者简介: 白国岩(1975—),男,河北省保定市雄县人,本科,正高级工程师,主要研究方向为铁路工程、站房工程、四电工程。
引用本文:   
白国岩, 李春宝, 孟繁丞, 李沐书, 马文忠. 多端柔性直流输电系统的自适应下垂控制策略研究[J]. 电气技术, 2022, 23(5): 1-8. BAI Guoyan, LI Chunbao, MENG Fancheng, LI Mushu, MA Wenzhong. Research on an adaptive droop control strategy applied in voltage source converter based multi-terminal high voltage direct current transmission system. Electrical Engineering, 2022, 23(5): 1-8.
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