| 引用本文: | 李佳,夏勇军,严才,姚伟,姚兵,文劲宇.混合多馈入直流系统VSC-HVDC和滤波器的无功协调控制[J].电力自动化设备,2021,41(6): |
| LI Jia,XIA Yongjun,YAN Cai,YAO Wei,YAO Bing,WEN Jinyu.Reactive power coordinated control of VSC-HVDC and filter in hybrid multi-feed HVDC system[J].Electric Power Automation Equipment,2021,41(6): |
|
| 摘要: |
| 为了减少常规直流输电(LCC-HVDC)的滤波器投切，充分利用柔性直流输电(VSC-HVDC)的无功调节容量和其动态调节无功的优势，提出一种适用于LCC-HVDC和VSC-HVDC电气距离较近情况下的混合多馈入直流系统的无功协调控制策略。分别分析了LCC-HVDC和VSC-HVDC的无功控制原理及其控制特点，基于滤波器投切和VSC-HVDC两者的无功控制优势，设计了混合多馈入直流系统的无功协调两级控制模块，达到减少滤波器投切，抑制暂态低电压和过电压的目的。在PSCAD/EMTDC中搭建混合多馈入直流系统模型并进行仿真验证，仿真结果表明所提协调控制策略的控制效果优于VSC-HVDC采用定无功功率控制和定交流电压控制。 |
| 关键词: 混合多馈入直流系统 滤波器投切 暂态电压 动态调节无功 无功协调控制 |
| DOI：10.16081/j.epae.202102032 |
| 分类号:TM721.1 |
| 基金项目:国家电网公司总部科技项目(5100-202022011A-0-0-00) |
|
| Reactive power coordinated control of VSC-HVDC and filter in hybrid multi-feed HVDC system |
|
LI Jia1, XIA Yongjun2, YAN Cai1, YAO Wei1, YAO Bing3, WEN Jinyu1
|
|
1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2.Electric Power Research Institute of State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430077, China;3.Hubei DC Transport and Inspection Company, Yichang 443000, China
|
| Abstract: |
| In order to reduce the filter switching of LCC-HVDC(Line Commutated Converter based HVDC) and make full use of reactive power regulation capacity of VSC-HVDC(Voltage Source Converter based HVDC) and its advantages of dynamic regulation of reactive power, a reactive power coordination control strategy in hybrid multi-feed HVDC system in which the electrical distance between LCC-HVDC system and VSC-HVDC system is close is proposed. The reactive power control principles and characteristics of LCC-HVDC and VSC-HVDC are analyzed. Based on the reactive power control advantages of filter switching and VSC-HVDC system, a reactive power coordinated two-stage control module is designed for the hybrid multi-feed HVDC system to reduce filter switching and inhibit transient low voltage and overvoltage. A hybrid multi-feed HVDC system model is built in PSCAD/EMTDC for simulation verification. The simulative results show that the control performance of the proposed strategy is better than that of VSC-HVDC with constant reactive power control and constant AC voltage control. |
| Key words: hybrid multi-feed HVDC system switching filter transient voltage dynamic regulation of reactive power coordinated reactive power control |
