| 引用本文: | 王宝安,商 姣,陈 豪.SVG用于单相负荷电能质量综合治理时相电流指令的计算[J].电力自动化设备,2016,36(2): |
| WANG Baoan,SHANG Jiao,CHEN Hao.Phase-current reference calculation for SVG used in comprehensivemanagement of single-phase load power quality[J].Electric Power Automation Equipment,2016,36(2): |
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| 摘要: |
| 针对三角形级联静止无功发生器（SVG）用于单相负荷电能质量综合治理时指令电流的计算方案进行了研究。将指令电流分为基波电流指令和谐波电流指令两部分。其中，基波电流指令的计算采用基于电纳补偿原理的Steinmetzs理论，谐波电流指令的计算可采用单相谐波全补偿策略、以环流等于0为约束原则的谐波补偿策略、谐波均分补偿策略这3种谐波电流补偿策略，并从SVG每相电流有效值、SVG中开关器件的通态损耗、SVG中开关器件的电流容量3个角度对比了3种谐波补偿策略。在PSCAD中建立了低电压七电平SVG的仿真模型，并搭建了低压实验样机，分别通过仿真和实验验证了所述指令电流计算方案的正确性。 |
| 关键词: 静止无功发生器 三角形连接 单相负荷 电能质量 指令电流 谐波分配 谐波分析 计算 |
| DOI： |
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| 基金项目:江苏省自然科学基金资助项目（BK20130627） |
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| Phase-current reference calculation for SVG used in comprehensivemanagement of single-phase load power quality |
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WANG Baoan, SHANG Jiao, CHEN Hao
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School of Electrical Engineering，Southeast University，Nanjing 210096，China
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| Abstract: |
| The calculating methods of phase -current reference for the delta-connected SVG（Static Var Generator）used in the single-phase load power quality management are researched. The phase-current reference is divided into the fundamental-current reference and the harmonic-current reference. The fundamental current is calculated based on the Steinmetzs theory while the harmonic current may be obtained by three harmonic compensation strategies：single-phase complete compensation，zero-circulating-current constrained compensation and evenly distributed harmonic compensation. The phase-current RMS，the on-state loss of switching device and the current capacity of switching device are compared among three strategies. A simulation model of low-voltage seven-level SVG is established in PSCAD and a low-voltage prototype is built. The simulative and experimental results validate the correctness of the introduced phase-current reference calculating methods. |
| Key words: SVG delta-connection single-phase load power quality current reference harmonic distribution harmonic analysis calculation |
