| 引用本文: | 曹华珍,高崇,许志恒,潘险险,邓文扬.微电网中感-容性耦合逆变器功率不均等分配策略[J].电力自动化设备,2022,42(12): |
| CAO Huazhen,GAO Chong,XU Zhiheng,PAN Xianxian,DENG Wenyang.Unequal power sharing method for ICI & CCI in hybrid microgrid[J].Electric Power Automation Equipment,2022,42(12): |
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| 摘要: |
| 容性耦合逆变器(CCI)可有效提高无功功率调节能力，且具有更高的经济性。为了提高微电网系统无功调节的灵活度，建立了一种包含并联CCI和感性耦合逆变器(ICI)的新型混合微电网结构。探讨了CCI和ICI的功率特性；分析了微电网中功率分配比例对逆变器容量的影响；针对CCI缺乏实用化功率分配方案的问题，提出了一种CCI和ICI的不均等功率分配方法；进而结合算例研究了不均等功率分配比例的计算方法，并提出了功率控制方案；根据算例搭建了仿真模型和实验平台进行测试。仿真和实验结果表明，相比传统功率均分方法，所提出的方法可有效降低逆变器容量。 |
| 关键词: 微电网 逆变器 功率分配 下垂控制 |
| DOI：10.16081/j.epae.202204032 |
| 分类号:TM464 |
| 基金项目:中国南方电网有限责任公司科技项目 (031000QQ00200006) |
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| Unequal power sharing method for ICI & CCI in hybrid microgrid |
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CAO Huazhen1, GAO Chong1, XU Zhiheng1, PAN Xianxian1, DENG Wenyang2
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1.Grid Planning & Research Center, Guangdong Power Grid Co.,Ltd.,Guangzhou 510030, China;2.Guangzhou Power Electrical Engineering Technology Co.,Ltd.,Guangzhou 510640, China
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| Abstract: |
| CCI(Capacitive Coupling Inverter) can effectively improve the reactive power regulation ability, and has higher economy. In order to improve the flexibility of reactive power regulation of the microgrid system, a new hybrid microgrid structure including parallel-connected CCI and ICI(Inductive Coupling Inver-ter) is established. The power characteristics of CCI and ICI are discussed. Then, the influence of power sharing ratio on inverter capacity in microgrid is analyzed. In order to solve the problem of lack of practical power sharing method for CCI, an unequal power sharing method for CCI & ICI is proposed. Based on the case study, the calculation method of unequal power sharing ratio is studied, and the power control method is proposed. The simulation model and experimental platform are built to test, and the results prove that the proposed method can effectively reduce the inverter capacity compared with the traditional equal power sharing method. |
| Key words: microgrid electric inverters power sharing droop control |
