| 引用本文: | 曹相芹,鞠 平,蔡昌春.微电网仿真分析与等效化简[J].电力自动化设备,2011,31(5): |
| CAO Xiangqin,JU Ping,CAI Changchun.Simulative analysis and equivalent reduction for micro-grid[J].Electric Power Automation Equipment,2011,31(5): |
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| 摘要: |
| 利用DIgSILENT软件搭建微电网仿真系统，使其在微电网孤岛运行、联网及2种模式转换时均能稳定运行。将微电网通过公共连接点（PCC）接入配电网，在配电网及微电网内部设置扰动，获取PCC处的电压、频率及功率数据，研究微电网的总体特性。为从配电网角度对微电网进行整体建模，提出对微电网系统进行等效化简的具体方法，包括综合负荷、风力发电机、同步发电机、光伏发电的等效。搭建一接入微电网的中压系统，对微电网等效化简前后的系统进行仿真，结果显示两者拟合较好，尤其是无功功率几乎无差别，证实微电网等效系统与原系统总体等效。 |
| 关键词: 微电网 仿真系统 DIgSILENT 等效化简 |
| DOI： |
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| Simulative analysis and equivalent reduction for micro-grid |
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CAO Xiangqin1, JU Ping1, CAI Changchun1,2
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1.College of Energy and Electric，Hohai University，Nanjing 210098，China;2.College of Computer and Information，Hohai University，Changzhou 213022，China
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| Abstract: |
| A simulation system is built for micro-grid based on DIgSILENT software，which can operate stably in different modes：islanded，grid-connected and switching between them. Micro-grid is connected to the power grid through the PCC（Point of Common Coupling）. Set disturbances inside and outside the micro-grid to obtain the voltage，frequency and power curves at PCC for the research of its overall characteristics. For the micro-grid modeling from the aspect of power distribution，the equivalent reduction methodology is proposed，including comprehensive loads，wind generators，synchronous generators，PV generations，etc. A mid-voltage power system connected with micro-grid is set up and simulated before and after equivalent reduction. Results show two systems match well to each other，especially the reactive powers，which prove the correctness of the equivalent model. |
| Key words: micro-grid simulation system DIgSILENT equivalent reduction |
