中国电力 ›› 2012, Vol. 45 ›› Issue (2): 58-63.DOI: 10.11930/j.issn.1004-9649.2012.2.58.5

• 新能源 • 上一篇    下一篇

大规模光伏并网发电系统建模与运行分析

戴武昌1, 孔令国1, 崔柱2   

  1. 1. 东北电力大学 电气工程学院,吉林 132012;
    2. 吉林省辽源供电公司, 吉林 辽源 136200
  • 收稿日期:2011-09-18 修回日期:2011-11-13 出版日期:2012-02-18 发布日期:2016-02-29
  • 作者简介:戴武昌(1963-), 男,吉林市人,高级工程师,从事新能源并网技术研究。

Modelling of a large scale grid-connected PV system and its operation analysis

DAI Wu-chang1, KONG Ling-guo1, CUI Zhu2   

  1. 1.School of Electrical Engineering,Northeast Dianli University, Jilin 132012,China;
    2. Liaoyuan Power Supply Corporation, Liaoyuan 136200, China
  • Received:2011-09-18 Revised:2011-11-13 Online:2012-02-18 Published:2016-02-29

摘要: 提出一种有效调节功率且改善低电压穿越能力的大规模光伏并网发电系统动态模型。采用基于功率变化率的改进型扰动观察最大功率跟踪算法和定有功及无功双环解耦策略对光伏系统进行控制。通过静止同步补偿器,快速补偿系统无功功率,维持并网点电压稳定。对包含大规模光伏电站的电力系统进行仿真计算,验证该模型的有效性及其对暂态电压稳定性的贡献。

关键词: 光伏并网, 大规模, 系统建模, 运行分析

Abstract: A dynamic model for a large scale grid-connected photovoltaic (PV) generation system was proposed. The model can help to regulate power effectively and improve the capability to do the low voltage ride through (LVRT). The perturbation and observation (P&O) algorithm based on power change rate and the double-loop decoupling control strategy of real and reactive power were adopted for the photovoltaic system. By using the STATCOM system, the reactive power compensation and system voltage stability are implemented. The simulation result on system performance of IEEE 3-machine 9-bus test system verifies the validity of the proposed model.

Key words: grid-connected photovoltaic, large scale, system modelling, operation analysis

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