考虑N-1安全的分布式电源多目标协调优化配置

发布时间：2018-12-12 01:11

【摘要】：现有风电和光伏分布式电源(DG)规划模型均未计及配电网中的主变、馈线N-1约束,所得配置方案未必满足安全性要求。为解决该问题,提出一种考虑N-1安全的多目标DG选址定容规划模型。基于安全距离模型,介绍配电网N-1安全评估方法和指标;利用准蒙特卡洛模拟和奇异值分解生成风光荷相关性样本矩阵以提高规划结果准确性;以年综合费最小和安全距离均衡比最小为多目标,利用机会约束规划方法建立DG规划模型,并采用正态边界交点联合动态小生境差分进化算法对模型加以求解。算例结果表明,所得选址定容规划方案能保证N-1安全,实现了综合考虑系统经济性、安全性下的最优,验证了所提模型和算法是合理、有效的。
[Abstract]:The existing (DG) planning models of wind power and photovoltaic distributed generation do not take into account the main transformer and the feed N-1 constraints in the distribution network, so the proposed configuration scheme may not meet the security requirements. To solve this problem, a multi-objective DG location planning model considering N-1 security is proposed. Based on the safety distance model, the security evaluation method and index of distribution network N-1 are introduced, and the wind load correlation sample matrix is generated by quasi-Monte Carlo simulation and singular value decomposition to improve the accuracy of planning results. With the minimum cost of annual synthesis and the minimum ratio of safe distance equilibrium as multi-objective, the DG programming model is established by using the chance constrained programming method, and the model is solved by using the normal boundary intersection point and dynamic niche differential evolution algorithm. The numerical results show that the proposed scheme can guarantee the security of N-1 and realize the optimal security of the system considering the economy of the system. The proposed model and algorithm are proved to be reasonable and effective.
【作者单位】：上海交通大学电力传输与功率变换控制教育部重点实验室;国网浙江省电力公司经济技术研究院;国家电网公司华东分部;
【基金】：国家重点研发计划项目(2016YFB0900102) 国家电网公司科技项目(5211JY160004)~~
【分类号】：TM715

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