| 引用本文: | 符 杨,陈禹瑾,季 亮,等.考虑功率解耦的构网型逆变器的低电压穿越控制策略[J].电力系统保护与控制,2024,52(15):1-13.[点击复制] |
| FU Yang,CHEN Yujin,JI Liang,et al.Low voltage ride-through control strategy of a grid-forming inverter considering power decoupling[J].Power System Protection and Control,2024,52(15):1-13[点击复制] |
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| 考虑功率解耦的构网型逆变器的低电压穿越控制策略 |
| 符杨1,2,陈禹瑾1,3,季亮1,3,李世林1,3,俞紫琳1,3,李振坤1,2,米阳1,3 |
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| (1.海上风电技术教育部工程研究中心(上海电力大学)，上海200090;2.上海电力大学海上风电研究院，
上海200090;3.上海电力大学电气工程学院，上海 200090) |
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| 摘要: |
| 构网型控制是提高新型电力系统稳定性的重要手段。构网型逆变器的功率耦合会导致功率、输出电压和电流波动，从而影响新能源的低电压穿越能力。针对该问题，提出了基于功率解耦的构网型逆变器低电压穿越控制策略。首先，分析构网型控制下的功率耦合机理。通过建立动态功率耦合模型，研究功率耦合对低电压穿越的影响。接着，提出一种基于串联补偿矩阵的功率解耦方法，并基于并网标准提出一种考虑功率解耦的构网型逆变器的低电压穿越控制策略。最后，利用StarSimHiL平台搭建了硬件在环实验平台。通过实验验证了串联补偿解耦控制策略在不同阻抗比下的鲁棒性，以及在不同电压跌落程度下所提控制策略的有效性。 |
| 关键词: 构网型逆变器 功率耦合 低电压穿越 动态耦合模型 串联补偿解耦 |
| DOI：10.19783/j.cnki.pspc.231628 |
| 投稿时间：2023-12-20修订日期：2023-12-20 |
| 基金项目:国家自然科学基金项目资助(52177098)；上海绿色能源并网工程技术研究中心项目资助(13DZ2251900) |
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| Low voltage ride-through control strategy of a grid-forming inverter considering power decoupling |
| FU Yang1,2,CHEN Yujin1,3,JI Liang1,3,LI Shilin1,3,YU Zilin1,3,LI Zhenkun1,2,MI Yang1,3 |
| (1. Engineering Research Center of Offshore Wind Technology Ministry of Education (Shanghai University of Electric Power),
Shanghai 200090, China; 2. Offshore Wind Power Research Institute, Shanghai University of Electric Power, Shanghai 200090,
China; 3. School of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China) |
| Abstract: |
| Grid-forming control is an important means for enhancing the stability of new power systems. The power coupling of grid-forming inverters can cause fluctuations in power, output voltage, and current, thereby affecting the low voltage ride-through (LVRT) capability of renewable energy. To address this issue, a LVRT control strategy for grid-forming inverters based on power decoupling is proposed. First, the power coupling mechanism under grid-forming control is analyzed. By establishing a dynamic power coupling model, the impact of power coupling on LVRT is studied. Subsequently, a power decoupling method based on a series compensation matrix is proposed, and an LVRT control strategy for grid-forming inverters considering power decoupling is developed based on grid-connection standards. Finally, a hardware-in-the-loop experimental platform is constructed using the StarSimHiL platform. The robustness of the series compensation decoupling control strategy with different impedance ratios, as well as the effectiveness of the proposed control strategy in various voltage sag conditions are verified through experiment. |
| Key words: grid-forming inverter power coupling low-voltage ride-through (LVRT) dynamic power coupling model series compensation decoupling |
