一种改善同相牵引供电系统直流侧电压及补偿容量的方案  

Improvement scheme for DC link voltage and compensation capacity of co-phase traction power supply system

作　　者：黄小红[1] 李群湛[1] 解绍锋[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电力自动化设备》2015年第2期85-90,共6页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51177139);高速铁路基础研究联合基金重点项目(U1134205)~~

摘　　要：针对电气化铁道同相牵引供电系统直流侧电压过高、补偿容量过大的问题,讨论了综合潮流控制器(IPFC)的改进方案。就牵引供电Vv接线、Scott接线和YN,d11接线3种形式,提出同相供电统一改进方案,即根据牵引和再生制动不同工况分别调整IPFC交流侧电抗属性及大小。对直流侧电压和核准容量的分析表明,改进方案可有效降低直流侧电压并减小设备补偿容量。改进后3种接线形式的核准容量都为负载的有功功率,且以Vv接线直流侧电压为最低,YN,d11接线为最高;而Scott接线可简化β侧的电抗设计。通过对Vv接线的仿真分析验证了所提方法的有效性与正确性。Aiming at the higher DC link voltage and larger compensation capacity of co-phase traction power supply system for electrified railway,an improvement scheme of IPFC（Integrated Power Flow Controller）is discussed. A unified improvement scheme is proposed for three common transformer connection modes,i.e.Vv,Scott and YN,d11,which adjusts the property and magnitude of its AC-side reactance according to different operating conditions of traction and regenerative braking. Analysis shows that the improvement scheme reduces the DC link voltage and compensation capacity effectively. After improvement,the approved capacity of three connection modes is uniformly the active power of load,the DC-link voltage of Vv mode is the lowest while that of YN,d11 the highest,and the β-side reactance design of Scott mode is simplified.Simulative results for Vv mode validate the effectiveness and correctness of the proposed method.

关 键 词：电气化铁道 同相牵引供电系统 综合潮流控制器 变压器接线 直流侧电压 核准容量 牵引 补偿 

分 类 号：TM922.3[电气工程—电力电子与电力传动]