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- Title
适用于中低压配电网的VSG 多机协同鲁棒运行控制方法.
- Authors
张从越; 窦晓波; 何国鑫; 杨冬梅
- Abstract
As a new power grid friendly operation control method,VSG(Virtual Synchronous Generator) is generally integrated to distribution network in a decentralized way with multiple low- and medium-voltage nodes. There are many kinds of uncertainties and multi-generator cooperative operation control problems, which pose a certain challenge to the security and stability control of distribution network. For this reason, a cooperative robust operation control method of multi-VSG available for low- and medium-voltage distribu⁃ tion network is proposed,which mainly discusses the problems of bus voltage tracking,active power sharing among multiple generators,uncertainties of power coupling caused by line impedance parameter uncertain⁃ ties of low- and medium-voltage distribution network,output uncertainties of system equipment,and so on. The uncertain power coupling is transformed into model uncertainties by establishing the VSG grid-connected model. Considering the possible problems of unknown topology and high order of model in low- and mediumvoltage distribution network,a multi-VSG grid-connected cooperative control model is established by directly expanding the bus voltage state and the average power distribution state of multiple generators. The feedback controller of the whole system is designed by using robust control theory to suppress the influence of uncertain power coupling inside the model and uncertain output of external equipment on the control perfor⁃ mance. The effectiveness of the proposed method is verified by the simulation model in MATLAB/Simulink
- Publication
Electric Power Automation Equipment / Dianli Zidonghua Shebei, 2020, Vol 40, Issue 9, p64
- ISSN
1006-6047
- Publication type
Article
- DOI
10.16081/j.epae.202009034