光伏发电置信容量的研究现状与发展趋势  

Current Status and Development Trend on Capacity Credit of Photovoltaic Generation

作　　者：梁双[1] 胡学浩[1] 张东霞[1] 王皓怀[1] 方鑫[1] 

机构地区：[1]中国电力科学研究院,北京市100192

出　　处：《电力系统自动化》2011年第19期101-107,共7页Automation of Electric Power Systems

基　　金：国家科技支撑计划资助项目(2011BAA07B00);国家电网公司科技项目"大容量光伏电站接入电网的规划设计技术研究";国家电网公司科技项目"含间歇式能源的电力电量平衡方法研究"~~

摘　　要：光伏发电具有明显的波动性和间歇性,目前尚不参与电力平衡,被认为是一种只提供电量价值、不提供容量价值的电源。但实践证明光伏发电与电网负荷具有较强的相关性,多数情况下可发挥削峰作用,忽略其容量价值将导致严重的资源浪费。因此,随着光伏发电在部分电网中穿透功率水平的不断提高,光伏发电的置信容量评估问题逐渐成为电网规划中关注的新热点。文中首先总结了光伏发电置信容量的评估指标和评估方法;按性质对评估指标进行分类,并比较了各类指标的优缺点,根据比较结果给出了推荐的指标;详细地论述了置信容量的评估方法,指出了目前的研究热点和未来的发展方向。然后从光伏电站、电网侧、用户侧多角度提出了光伏发电置信容量的提高措施,并对其可行性、应用前景及相关技术进行了讨论。最后,基于系统的调节能力论述了光伏发电置信容量的保障措施。Photovoltaic （PV） generation is still considered to be an energy-replacement rather than capacity-replacement source and absent from power balance because of its fluctuating and intermittent nature. PV output is proven to have strong relationship with load and plays peak-shaving role in most cases, as such ignoring its capacity value will lead to serious waste of resources. As the PV penetration increases rapidly in recent years, evaluation of PV capacity credit is becoming one of the hottest issues in power system planning. Firstly, the evaluation metrics and methods of PV capacity credit are summarized. Evaluation metrics are classified by their characteristics and a recommended metric is given according to the results of comparison; evaluation methods are discussed in detail, including the research hotspots and developing directions＇. Secondly, improvement measures of PV capacity credit are proposed from aspects of PV power station, grid side and demand side. Furthermore, the rrfeasibility, prospects and related technology are analyzed. Finally, the safeguard measures of PV capacity credit from the point of power system flexibility are explored.

关 键 词：光伏发电 置信容量 有效载荷能力 互补发电 储能装置 调节能力 

分 类 号：TM615[电气工程—电力系统及自动化]