Hardware-in-the-loop tests on distance protection considering VSC fault-ride-through control strategies

作     者：Jia, Jundi Yang, Guangya Nielsen, Arne Hejde Roenne-Hansen, Peter 

作者机构：Tech Univ Denmark Ctr Elect Power & Energy Lyngby Denmark Siemens AS Vejle Denmark 

出 版 物：《JOURNAL OF ENGINEERING-JOE》 

年 卷 期：2018年第2018卷第15期

页      面：824-829页

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 

基　　金：Danish ForskEL Project 'Synchronous Condensers Application in Low Inertia Systems (SCAPP)' 

主　　题：relay protection power grids load flow power system faults voltage-source convertors power system control hardware-in-the loop simulation VSC fault-ride-through control strategies voltage source converter short-circuit response distance protection hardware-in-the-loop tests unbalanced faults control parameters converter-dominated power system pre-fault power flow conditions fault resistance converter current limit 

摘      要：The short-circuit response of a voltage source converter (VSC) can vary from each other significantly with different control strategies. This study investigates the performance of distance protection under unbalanced faults considering two control strategies during fault-ride-through using hardware-in-the-loop tests. Variations on fault type, converter current limit, fault resistance and pre-fault power flow conditions are also examined. The tests reveal that the error in measured impedance caused by fault resistance will be enlarged in a converter-dominated power system. The first control strategy tends to cause overreach problem while the second can raise both overreach and underreach problems. The indeterminacy associated with the second strategy is jointly affected by control parameters, converter current limit, fault resistance and pre-fault power flow conditions. The findings of this study can help to stipulate grid requirements under unbalanced faults.