摘要
高速列车在再生制动运行时,会产生大量的再生制动能量,这部分能量无法简单地忽略。首先考虑高速列车在各种运行工况下能量回馈对系统不平衡的影响,提出了一种高速铁路系统协同不平衡补偿方法(collaborative unbalance compensation method, CUCM)来降低电力电子补偿装置的容量与成本;然后分析了两种补偿原理,即RPC原理和Steinmetz原理,以保证CUCM能运行良好;最后基于高速列车的实际运行情况,对CUCM的容量进行了分析。分析和仿真结果表明:两种补偿方式虽然具有不同的实现方法和补偿电流表达式,但其补偿本质是相同的,应采用协同补偿策略;在牵引工况和能量反馈工况下,所提出的CUCM能够在完全补偿高速铁路电力系统的不平衡电流的前提下,有效降低装置成本。
High-speed trains generate a large amount of regenerative braking energy during regenerative braking, which cannot be simply ignored. Consideringthe influence of energy feedback on system imbalance in high-speed trains under various operating conditions,we proposed a cooperative unbalance compensation method (CUCM) for high-speed railway system to reduce the capacity and cost of power electronic compensation devices. In order to ensure that CUCM works well, two compensation principles were analyzed, namely, RPC principle and Steinmetz principle. Finally, based on the actual operation of high-speed trains, the capacity of CUCM was analyzed. The analysis and simulation results show that the two compensation methods have different implementation methods and compensation current expressions, but the compensation essence is the same and the cooperative compensation strategy should be adopted. Under the traction con dition and energy feedback condition, the proposed CUCM can be used to effectively reduce the equipment cost while fully compensating the unbalanced current of the high-speed railway power system.
作者
袁佳歆
倪周
李劲彬
童歆
蔡超
肖非然
YUAN Jiaxin;NI Zhou;LI Jinbin;TONG Xin;CAI Chao;XIAO Feiran(School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China;Shenzhen Institute of Wuhan University,Shenzhen 518057,China;Research Institute of State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430077,China;State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430077,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2019年第7期2028-2036,共9页
High Voltage Engineering
基金
国家重点研发计划(2017YFB0902904)
深圳市科技创新计划(JCYJ20170306170937861)
国家轨道交通电气化与自动化工程技术研究中心开放课题(NEEC-2017-A04)
国家电网公司科技项目(52153217001C)~~
关键词
高速铁路系统
再生制动
能量回馈
负序电流
CUCM
协同补偿
high speed railway system
regenerative braking
energy feedback
negative sequence current
CUCM
cooperative compensation
