Simulation and experimental research on methods to suppress ferroresonance in potential transformers  

作　　者：Hongwen Liu Ke Wang Junhui Zhao Hao Li Shijin Tian 

机构地区：[1]Yunnan Electric Power Research Institute,Kunming,China [2]Department of Electrical and ComputerEngineering&Computer Science,University of New Haven,West Haven,CT,USA [3]State Key Laboratory ofElectrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an,China

出　　处：《Journal of Control and Decision》2018年第2期195-208,共14页控制与决策学报（英文）

摘　　要：Ferroresonance in distribution networks is usually hard to be identified and predicted because it is nonlinear and dependent on multiple factors and conditions.This study discusses different common antiferroresonance methods by numerical simulations and experimental tests.In order to study the reliability of the anti-ferroresonance measures,a 10 kV ferroresonance testing system was setup.Then a number of simulations and experiments were carried out to show the ferroresonance phenomena initiated by single-phase grounding faults and/or single-phase disconnection faults.In addition,potential transformer models with the characteristic of non-linear magnetic excitation were developed and used in PSCAD-based simulation studies.These studies investigated the performance of primary resonance eliminators and arc suppression coils on restraining the ferroresonance under multiple power system parameters and initialisations.In addition,a joint anti-ferroresonance method is proposed and verified.The simulation and experimental studies can provide guidelines for evaluating the anti-ferroresonance methods in distribution networks.

关 键 词：Arc suppression coil distribution network FERRORESONANCE primary resonance eliminator PSCAD/EMTDC 

分 类 号：TG1[金属学及工艺—金属学]