计及控制策略的并网型微电网可靠性评估  

Reliability evaluation of grid-connected micro-grid considering control strategies

作　　者：谢林[1] 谢开贵[1] 何坚[2] 翟照辉[2] 胡博[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [2]广东电网公司东莞供电局,广东东莞523000

出　　处：《电力系统保护与控制》2013年第15期102-109,共8页Power System Protection and Control

基　　金：国家863高技术基金项目(2011AA05A107);国家自然科学基金项目(51077135);重庆市杰出青年基金项目(CSTC2010BA3006);重庆市自然科学基金(CSTC2012JJA90004)~~

摘　　要：当上层配电网故障或电能质量不满足要求时,微电网可通过控制策略切换等调度各微电源的出力,实现微电网孤岛运行。孤岛运行时,不同控制策略直接影响微电网的供电可靠性。通过对微电网最常见的两种控制策略(主从型和对等型)的分析,建立了计及控制策略的并网型微电网功率模型;通过对上层配电网进行最小路等值,建立微电网不同控制策略下的故障影响矩阵,提出了基于时序蒙特卡洛的并网型微电网可靠性评估方法。以此方法对改进的IEEE-RBTS系统进行可靠性评估,分析了两种控制策略对配电网可靠性指标的影响。算例表明:微电网加入配电网后可改善系统可靠性性能;对等型微电网比主从型微电网的可靠性要高。Once upper distribution network is failed or power quality does not meet requirements, micro-grid cooromates various micro-generations output by switching to a pre-set control strategy to ensure normal island operation. During island operation, different control strategies affect micro-grid＇s supply reliability directly. Through analysis of micro-grid＇s two most common control strategies （master-slave and peer-peer）, this paper builds micro-grid power model taking into account control strategies and proposes sequential Monte Carlo reliability evaluation method of grid-connected micro-gird through main power grid＇s minimal path equivalent and micro-grid breakdown influence matrix under different control strategies. Through evaluating the improved IEEE-RBTS using this method, reliability impact of two control srategies is analyzed. The illustrative example shows that micro-grid can improve the reliability performance of distribution network; and reliability of micro-grid with peer-peer control strategy is higher than micro-grid with master-slave control strategy.

关 键 词：微电网 控制策略 时序蒙特卡洛 可靠性评估 

分 类 号：TM732[电气工程—电力系统及自动化]