| 引用本文: | 王果,武旭,李龙,张梦圆,李旭哲,成柯,张建雄.光伏多功能并网逆变器不同出力状态下无功和谐波优化方法[J].电力自动化设备,2024,44(1):80-87. |
| WANG Guo,WU Xu,LI Long,ZHANG Mengyuan,LI Xuzhe,CHENG Ke,ZHANG Jianxiong.Optimization method of reactive power and harmonic for photovoltaic multi-function grid-connected inverter under different output states[J].Electric Power Automation Equipment,2024,44(1):80-87. |
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| 摘要: |
| 利用光伏多功能并网逆变器所具有的电能质量治理、谐波谐振抑制的主动优势，结合逆变器在不同出力状态下光伏发电系统的输出特性，构建光伏多功能并网逆变器不同出力状态下的无功和谐波优化方法。在所提3层优化策略中，上层优化策略以光伏并网有功功率最大化为目标函数，中层优化策略以电压谐波总畸变率和电压偏差达到相应电能质量规定指标为目标函数，下层优化策略以电压谐波总畸变率和电压偏差最小为目标函数，并采用自适应蚁群算法进行求解。基于IEEE 33节点系统进行算例分析，结果表明：基于逆变器不同出力状态的优化方法可以有效改善电网的电能质量，较好地提升电网运行的经济性；在系统稳定运行的基础上，光伏多功能并网逆变器在不同出力状态下分阶段、分主次地治理谐波和调整电压偏差，治理效果更佳。 |
| 关键词: 光伏发电系统 多功能并网逆变器 优化策略 无功优化 谐波治理 |
| DOI：10.16081/j.epae.202212022 |
| 分类号:TM615;TM464 |
| 基金项目:国家自然科学基金资助项目(51867012)；甘肃省教育厅2021年青年博士基金资助项目(2021QB?058)；甘肃省重点研发计划项目(21YF5GA159)；兰州交通大学“百名青年优秀人才培养计划”项目 |
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| Optimization method of reactive power and harmonic for photovoltaic multi-function grid-connected inverter under different output states |
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WANG Guo1, WU Xu1, LI Long2, ZHANG Mengyuan1, LI Xuzhe1,3, CHENG Ke1,3, ZHANG Jianxiong1
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1.School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;2.Qingdao Dingxin Communication Co.,Ltd.,Qingdao 266000, China;3.School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
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| Abstract: |
| Based on the active advantages of photovoltaic multi-function grid-connected inverter(PVMFGCI) in power quality control and harmonic resonance suppression, and combined with the output characteristics of photovoltaic power generation system under different output states of the inverter, the optimization method of reactive power and harmonic for PVMFGCI under different output states is proposed. In the proposed three-layer optimization strategy, the upper-layer optimization strategy takes the maximum grid-connected active power as the objective function, the middle-layer optimization strategy takes the total harmonic distortion rate and voltage deviation to reach the specified targets of corresponding power quality as the objective function, and the lower-layer optimization strategy takes the minimum harmonic distortion rate and voltage deviation as the objective function, which is solved by the adaptive ant colony algorithm. Taking the IEEE 33-bus system as the example, the results show that the optimization method based on different output states of the inverter can effectively improve the power quality of power grid and improve the economy of power grid operation. On the basis of stable operation of the system, the PVMFGCI can stage control harmonics and adjust voltage deviation by primary and secondary under different output states, and its control effect is better. |
| Key words: photovoltaic power generation system multi-function grid-connected inverter optimization strategy reactive power optimization harmonic governance |
