控制理论与应用2017，Vol.34Issue(5)：637-647,11.DOI:10.7641/CTA.2017.60398
多端高压直流输电系统自适应无源控制
Adaptive passive control for multi-terminal high voltage direct current systems
摘要
Abstract
This paper develops a perturbation observer-based adaptive passive control (POAPC), which is applied to improve the system damping of voltage source converter-based multi-terminal high voltage direct current (VSC–MTDC) systems. A perturbation term is firstly defined to aggregate the combinatorial effect of interactions among each terminals, unmodelled dynamics and unknown time-varying external disturbances. Then an extended state is employed to represent the perturbation, which can be rapidly estimated online via a perturbation observer. Furthermore, an extra system damping can be injected into each terminal to improve the transient response through the passivation, while POAPC does not require an accurate system model and measurements of full states. Four case studies are undertaken on a four-terminal VSC–MTDC system, which demonstrate that POAPC can provide a better control performance with greater robustness over that of conventional proportional-integral (PI) control conventional passive control, and perturbation observer based sliding-mode control (POSMC). POAPC can effectively reduce the control error and overshoot of active power and reactive power. Meanwhile, its P2 peak value is reduced from 11%to around 0%, such that a great robustness can be realized.关键词
自适应无源控制/扰动观测器/阻尼系统/多端高压直流输电系统系统Key words
adaptive passive control/perturbation observer/damping system/VSC–MTDC systems分类
信息技术与安全科学引用本文复制引用
杨博,黄琳妮,张孝顺,余涛..多端高压直流输电系统自适应无源控制[J].控制理论与应用,2017,34(5):637-647,11.基金项目
国家重点基础研究发展计划("973"计划)(2013CB 228205),国家自然科学基金项目(51477055),昆明理工大学自然科学研究基金资助项目—–省人才培养计划(KKSY201604044),云南省教育厅科学研究基金项目(KKJB201704007)资助. Supported by National Natural Science Foundation of China (2013CB 228205), National Natural Science Foundation of China (51477055) and Yunnan Provincial Talents Training Program (KKSY201604044) and the Scientific Research Foundation of Yunnan Provincial Department of Education (KKJB201704007). （"973"计划）
