A Study on the Protection Relay Test and Analysis Method of AC Electric Railway Substation

• 作者: Byeong-Gon Lee Byung-Lib Ahn Dae-Seok Kang Woo-Sik Won
• 来源期刊: 能源与动力工程:英文版
• 学科: 经济
• 关键词: Electric RAILWAY digital protection RELAY MODELING PSCAD/EMTDC
• 年，卷（期）: 2020,（6）
• 页码范围: 179-186
• 页数: 8页
• 分类号: F53

摘要

Since opening of the Korean high-speed railway in 2004,the rate of electrification has been increasing rapidly,and safety of the supply of AC railways has become very important.And the digital protection relays in railway feeding system need more attention with the expansion of unmanned SSs(substations)and digital SSs.For accident prevention,it is necessary to develop accurate modeling and simulation technology for railway feeding devices of electric railway.And it is also important to continuously improve test methods and develop excellent relay algorithms and apply them to the protection system to prepare for unexpected accidents.In this study,after reduced modeling the AC railway power supply system using PSCAD/EMTDC(Power Systems Computer Aided Design/Electromagnetic Transient DC Analysis),the results were compared and verified with the numerical calculation using the symmetric coordinate method.It also presents a method of using the verified results for simulation and education for various railway accidents.This study result will be used for the construction of new lines as well as existing lines in the future railway business.