摘要
光伏发电具有随机波动性和间歇性,随着并网光伏电站容量的增加,将增大电网发生频率、电压等指标越限的机会。研究了并网光伏电站极限容量计算的机会约束规划模型,该模型以最大化并网光伏电站容量为规划目标、电网指标合格率约束为机会约束,并且引入太阳辐射随机时间序列模型和不同跟踪形式的光伏系统模型。在IEEE30算例中进行了验证与分析,结果表明,该模型适用于在考虑负荷及太阳辐射随机变化条件下的并网光伏电站极限容量计算,计算代价较小、准确性较高,并且得出结论,考虑光伏跟踪形式和电网指标合格率十分必要。
Photovoltaic （PV） power generation has random fluctuating and intermittent nature. With the increasing capacity of grid-connected （GC） PV power station （PS）, it will also increase the chance that power grid indices, such as power grid frequency, voltage and so on, run over their boundaries. In this paper, chance-constrained programming of grid-connected photovoltaic power station’s （GCPVPS’s） capacity limit was studied. A chance-constrained programming model which maximizes GCPVPS’s capacity and constrains by power grid indices’ eligible-rates was built. And, the solar irradiance stochastic time-series model and the PV power system models in different tracking types was introduced. The method was verifed and analyzed on IEEE 30-bus power system, and the results show that the proposed model is suitable for calculating GCPVPS’s capacity limit with considering the random nature of loads and solar irradiance, the method has respectively small calculation cost and high accuracy, and it is very necessary that the PV tracking type and the grid indices’ eligible-rate are considered.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第22期22-28,共7页
Proceedings of the CSEE
基金
国家863高技术基金项目(2006AA050206)~~
关键词
并网光伏发电系统
极限容量
机会约束规划
光伏系统模型
grid-connected photovoltaic （PV） generation system
capacity limit
chance-constrained programming
photovoltaic system model
