摘要
柔性直流输电系统基于电压源变流器（voltage source converter,VSC）并采用较为复杂的控制系统,受电力电子设备快速控制的影响,可能在不同运行工况下出现机理多变的功率振荡。近年来国内外多次报道了柔性直流输电系统中观测到的振荡现象。首先介绍了国内外的典型振荡事件,并依据发生机理对这些振荡事件进行初步归类。然后从模型搭建、稳定性分析和振荡控制等方面,总结了柔性直流输电系统在不同结构和运行方式下的分析方法。最后对其相关振荡的研究难点和未来方向予以展望。
Flexible HVDC systems have been using voltage source converter（VSC） and complicated digital controllers, as the results of their fast responses, various types of oscillations are probably triggered under the varying operating conditions. In recent years, several oscillation incidents in HVDC transmission system have been observed around the world. This paper first reviews some of the typical oscillation incidents reported around the world and categorizes these incidents based on their mechanism. And then the analysis methods for various system topologies and operating conditions are summarized based on recent research works, such as modeling method, stability analysis, and damping control, etc. Finally, the key problems and future research perspectives regarding the oscillation phenomenon in HVDC system are discussed.
作者
尹聪琦
谢小荣
刘辉
王潇
王志冰
迟永宁
YIN Congqi1, XIE Xiaorong1, LIU Hui2, WANG Xiao2, WANG Zhibing3, CHI Yongning3(1. State Key Lab of Control and Simulation of Power Systems and Generation Equipments（Dept. of Electrical Engineering, Tsinghua University）, Haidian District, Beijing 100084, China; 2. Electric Power Research Institute of State Grid Jibei Electric Power Company Limited, Xicheng District, Beijing 100034, China; 3. State Key Laboratory of Operation and Control of Renewable Energy ＆ Storage Systems （China Electric Power Research Institute）, Haidian District, Beijing 100192, China)
出处
《电网技术》
EI
CSCD
北大核心
2018年第4期1117-1123,共7页
Power System Technology
基金
国家重点研发计划资助(2017YFB0902000)
国家自然基金重点项目(51737007)
国家电网公司科技项目(新能源接入±500kV柔性直流电网运行适应性研究,NY71-16-062)~~
关键词
柔性直流输电系统
系统稳定性
阻抗模型
振荡
阻尼控制
high-voltage DC transmission （HVDC） system
system stability
impedance model
oscillation
damping control
