计及控制策略的并网型微电网可靠性评估

谢林<sup>1</sup>; 谢开贵<sup>1</sup>; 何坚<sup>2</sup>; 翟照辉<sup>2</sup>; 胡博<sup>1</sup>

引用本文:	谢林,谢开贵,何坚,等.计及控制策略的并网型微电网可靠性评估[J].电力系统保护与控制,2013,41(15):102-109.
	XIE Lin,XIE Kai-gui,HE Jian,et al.Reliability evaluation of grid-connected micro-grid considering control strategies[J].Power System Protection and Control,2013,41(15):102-109

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计及控制策略的并网型微电网可靠性评估
谢林¹, 谢开贵¹, 何坚², 翟照辉², 胡博¹
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

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。

关键词: 微电网控制策略时序蒙特卡洛可靠性评估

DOI：10.7667/j.issn.1674-3415.2013.15.015

分类号:

基金项目: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）

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

XIE Lin,XIE Kai-gui,HE Jian,et al

Abstract:

Once upper distribution network is failed or power quality does not meet requirements, micro-grid coordinates 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.

Key words: micro-grid control strategy sequential Monte Carlo simulation reliability evaluation

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