| 引用本文: | 黄小红,李群湛,杨乃琪,舒泽亮.同相牵引供电系统控制策略研究及仿真分析[J].电力自动化设备,2014,34(1): |
| HUANG Xiaohong,LI Qunzhan,YANG Naiqi,SHU Zeliang.Control strategy of co-phase traction power supply system and simulative analysis[J].Electric Power Automation Equipment,2014,34(1): |
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| 摘要: |
| 针对电气化铁道的谐波、无功、负序及电分相等问题，讨论了采用Scott平衡变压器与综合潮流控制器（IPFC）构成的同相供电系统。提出IPFC直流侧电压PI均值前馈控制策略，可准确控制变压器副边电流幅值均衡，实现系统负序的完全补偿。为改善传统控制方法谐波含量高、直流侧电压波动大的不足，提出直流侧电流均值前馈控制策略。所提方法使系统具有良好的动态特性、稳定性及较小的稳态误差，且在牵引和再生制动工况下均适用。仿真分析验证了所提方法的有效性与正确性。 |
| 关键词: 同相牵引供电系统 综合潮流控制器 滞环比较控制 前馈控制 PI均值前馈控制 电流均值前馈控制 再生制动 补偿 电气化铁道 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（51177139） |
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| Control strategy of co-phase traction power supply system and simulative analysis |
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HUANG Xiaohong, LI Qunzhan, YANG Naiqi, SHU Zeliang
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School of Electrical Engineering，Southwest Jiaotong University，Chengdu 610031，China
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| Abstract: |
| Aiming at the problems in the negative sequence，harmonics，reactive power and electrical separation of electric railroad，the co-phase traction power supply system composed of Scott transformer and IPFC（Integrated Power Flow Controller） is discussed. A scheme of PI-mean feedforward control at IPFC DC voltage side is presented to properly control the amplitude equilibrium of transformer secondary current for the complete compensation of system negative sequence. A scheme of DC current-mean feedforward control is also given to suppress the harmonic content and smooth the DC voltage. The proposed control strategy has better dynamic performance and stability，as well as smaller steady-state error，suitable for both traction and regenerative braking conditions. Simulative results verify its correctness and effectiveness. |
| Key words: co-phase traction power supply system integrated power flow controller hysteresis comparison control feedforward control PI-mean feedforward control current-mean feedforward control regenerative braking compensation electric railroads |
