| 微电网孤岛运行模式下改进下垂控制策略研究 |
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| 引用本文： | 钦高唯,王耀聃,张慧媛.微电网孤岛运行模式下改进下垂控制策略研究[J].计算机仿真,2020,37(1):70-75. |
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| 作者姓名： | 钦高唯 王耀聃 张慧媛 |
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| 作者单位： | 广东电网物资有限公司,广东广州510627;上海电力学院计算机科学与技术学院,上海201306;华北电力大学电气与电子工程学院,北京102206 |
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| 摘 要： | 传统下垂控制在微电网孤岛模式下,由于受线路阻抗影响,难以有效保证功率合理分配和系统运行频率在有效范围,造成微电网运行不稳。针对上述问题,提出了一种改进的下垂控制策略。在功率分配环节采用考虑阻感比的功率控制器,改善系统功率分配;引入了自恢复控制环节,通过PI调节,使系统具有较好的动态性能,保证了系统运行频率在合理范围。首先对该控制策略的原理进行分析,然后在MATLAB/SIMULINK平台进行仿真分析,结果验证所提方法能更好地保证功率分配及系统运行频率稳定,为低压微电网在孤岛模式下控制方法提供了参考。
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| 关 键 词： | 低压微电网 孤岛 下垂控制 功率分配 频率控制 |
Research on Improved Droop Control Method for Islanding Operating Mode in Micro-grid |
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| QIN Gao-wei,WANG Yao-dan,ZHANG Hui-yuan.Research on Improved Droop Control Method for Islanding Operating Mode in Micro-grid[J].Computer Simulation,2020,37(1):70-75. |
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| Authors: | QIN Gao-wei WANG Yao-dan ZHANG Hui-yuan |
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| Affiliation: | (Guangdong Power Grid Materials Co.,Ltd,Guangzhou Guangdong 510627,China;College of Computer Science and Technology,Shanghai Electric Power College,Shanghai 201306,China;School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China) |
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| Abstract: | It is hard to control the power flow and the frequency of the system under low-voltage island mode due to the line impedance.An improved method is proposed by introducing self-recovery and PI process in order to deal with this situation.A resistance-ratio adopted power controller was used to distribute the power,and a self-recovery process was applied to make sure that the frequency of the system is under reasonable range.First of all,the principle of the method was analyzed.Then the droop control and improved droop control method were simulated through MAT-LAB/SIMULINK platform.The results show that the proposed method is more effective in distributing the power and maintaining the frequency of the system,and can be used under island mode. |
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| Keywords: | Low-voltage micro-grid Island Droop control Power flow distribution Frequency contro |
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