Robust decentralized PI controllers design for voltage regulation in distribution networks with DG

作     者：Russo, Mario Fusco, Giuseppe 

作者机构：Univ Cassino & Lazio Meridionale DIEI I-03043 Cassino Italy 

出 版 物：《ELECTRIC POWER SYSTEMS RESEARCH》 (电力系统研究)

年 卷 期：2019年第172卷

页      面：129-139页

核心收录：

学科分类：0808[工学-电气工程] 080802[工学-电力系统及其自动化] 08[工学] 

基　　金：Italian Ministery of University and Research 

主　　题：Distributed generation Smart distribution systems Decentralized voltage regulation MIMO design PI controllers Robust stability 

摘      要：The presence of Distributed Generators (DGs) in distribution networks may cause voltage fluctuations due to the reverse power flow. To solve this problem the present paper proposes a decentralized approach to regulate the voltage amplitude of the nodes to which the DGs are connected. Each DG is equipped with a PI decentralized controller whose parameters are tuned using a MIMO design. Zero voltage regulation error, robust stability and tolerance to the disconnection of DGs are guaranteed. A IEEE test distribution system with 123 nodes and 15 PVs is simulated to assess the obtained performance. The numerical results demonstrate that the application of the proposed design can help to guarantee robust voltage regulation.