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大规模光伏电站孤岛运行方式分*析 被引量:6

Analysis for Islanding of Large-scale Photovoltaic Power Station Operation
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摘要 为提高光伏电站并网运行情况下供电的可靠性,文中提出了在传统光伏电站主控与监测系统中扩展孤岛检测与能量管理功能的方法。当检测到光伏电站处于孤岛运行状态时,根据上一时刻采集到的并网电压推算逆变器参考电压相位,并调整逆变器控制策略,使光伏电站根据负荷情况调整电流输出。通过对大规模光伏电站接入的实际配电网络的仿真分析表明,该方法能够实现光伏电站由并网运行方式到孤岛运行方式的无缝切换,从而提高光伏电站并网运行情况下供电的可靠性。 For improving the supply reliability of whole PV station,an updated islanding detection and energy management method,which applied in traditional master control and monitoring system of photovoltaic(PV) power station,was proposed in the paper.When the islanding operation of PV station is detected,the proposed method will predict phase angle of inverter references with collected data,and change the inverter control strategy,so that the PV station can adjust its output current according to the load requirement.Simulations of large-scale PV station in distribution network show that the proposed method can achieve transformation from grid-tied operation to islanding operation seamlessly,and improve the PV station operational reliability.
出处 《电力系统及其自动化学报》 CSCD 北大核心 2011年第2期76-80,91,共6页 Proceedings of the CSU-EPSA
基金 山东电力集团公司重大科技项目(2010A-102)
关键词 光伏电站 并网运行 孤岛运行 孤岛检测 能量管理 photovoltaic power station grid-connected operation islanding operation islanding detection energy management
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