| 静止无功发生器谐波模型及其对谐振影响分析 |
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| 引用本文： | 刘可,王轩,王杨,王昕,杨放南,李剑武,刘冬平,郭财,张启晟,陈海盟.静止无功发生器谐波模型及其对谐振影响分析[J].中国电力,2022,55(9):174-182. |
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| 作者姓名： | 刘可 王轩 王杨 王昕 杨放南 李剑武 刘冬平 郭财 张启晟 陈海盟 |
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| 作者单位： | 1. 国网青海省电力公司电力科学研究院，青海 西宁 810008;2. 四川大学 电气工程学院，四川 成都 610065;3. 深圳市中电电力技术股份有限公司，广东 深圳 518000;4. 国网青海省电力公司，青海 西宁 810008;5. 国网青海省电力公司检修公司，青海 西宁 810008 |
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| 基金项目： | 国网青海省电力公司科技项目(青海电网典型变电站35(10)kV不接地系统谐振分析及排除技术研究与应用, 52280720002Q)；国家自然科学基金资助项目(暂态扰动激励下交直流系统谐波振荡动态过程刻画与失稳机理研究，52177104)。 |
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| 摘 要： | 静止无功发生器（static var generator，SVG）因响应速度快和调节范围广等优点被广泛应用于光伏场站，从而满足系统动态无功补偿等需求。然而现有研究缺乏SVG与光伏场站及电网谐波交互作用的分析，往往忽略其对光伏场站谐波谐振问题的影响。针对这一问题，基于多频谐波响应建立一种新型谐波耦合阻抗形式的SVG模型，该模型能够充分揭示系统中的频率耦合效应，可用于定量分析SVG对光伏场站谐波谐振的影响。最后，通过对实际光伏场站的时域仿真，验证所提谐波阻抗模型的正确性及频率耦合在谐波谐振分析中的重要性。
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| 关 键 词： | 静止无功发生器 多频谐波响应 谐波阻抗 频率耦合 谐波谐振 |
| 收稿时间： | 2022-03-21 |
Harmonic Model of Static Var Generator and Analysis of Its Resonance Influence |
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| LIU Ke,WANG Xuan,WANG Yang,WANG Xin,YANG Fangnan,LI Jianwu,LIU Dongping,GUO Cai,ZHANG Qisheng,CHEN Haimeng.Harmonic Model of Static Var Generator and Analysis of Its Resonance Influence[J].Electric Power,2022,55(9):174-182. |
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| Authors: | LIU Ke WANG Xuan WANG Yang WANG Xin YANG Fangnan LI Jianwu LIU Dongping GUO Cai ZHANG Qisheng CHEN Haimeng |
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| Affiliation: | 1. Electric Power Research Institute, State Grid Qinghai Electric Power Company, Xining 810008, China;2. College of Electrical Engineering, Sichuan University, Chengdu 610065, China;3. CEIEC Shenzhen Electric Technology Inc., Shenzhen 518000, China;4. State Grid Qinghai Electric Power Company, Xining 810008, China;5. Maintenance Company of State Grid Qinghai Electric Power Company, Xining 810008, China |
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| Abstract: | Static var generators (SVGs) are widely used in photovoltaic (PV) stations because of their fast response speed and wide regulation range, which can meet such needs of the system as dynamic reactive power compensation. However, the existing research lacks the analysis of the harmonic interaction between SVGs and PV stations and power grids, and it often ignores the impact of SVGs on the harmonic resonance of PV stations. To solve this problem, this paper builds a new SVG model in the form of harmonic coupling impedance on the basis of multi-frequency harmonic response. The model can fully reveal the frequency coupling effect in the system and can be used to quantitatively analyze the influence of SVGs on the harmonic resonance of PV stations. Finally, the time-domain simulations of an actual PV station verify the correctness of the proposed harmonic impedance model and the importance of frequency coupling in harmonic resonance analysis. |
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| Keywords: | static var generator multi-frequency harmonic response harmonic impedance frequency coupling harmonic resonance |
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