引用本文: | 王波,虞殷树,贺旭,等.计及分布式电源并网安全约束的配电网改接优化模型[J].电力系统保护与控制,2019,47(22):67-77.[点击复制] |
WANG Bo,YU Yinshu,HE Xu,et al.An optimization model for restructuring distribution network considering grid-connected security constraints of DGs[J].Power System Protection and Control,2019,47(22):67-77[点击复制] |
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摘要: |
提出一种计及分布式电源并网安全约束的配电网改接优化模型。首先,对分布式电源并网后改善区域型负荷平衡和确保上级电源事故备用不超限问题进行了分析,将分布式电源的返送电流和上级电源备用容量统称为分布式电源并网安全约束。在此基础上,提出了区域电源总变电容量和10 kV馈线网络结构这两项配电网改接方案评价指标。随后建立了计及分布式电源并网安全约束的10 kV配电网改接优化模型,并且对10 kV馈线网结构指标不合格、区域电源总变电容量指标合格的配电网,采用免疫遗传算法对所建模型进行求解。最后,通过对某片区实际10 kV配电网改接优化问题的仿真分析,验证了所提方法的有效性。 |
关键词: 分布式电源 配电网络改接 并网安全约束 免疫遗传算法 |
DOI:10.19783/j.cnki.pspc.181541 |
投稿时间:2018-12-10修订日期:2019-02-28 |
基金项目:国家自然科学基金项目资助(51577018) |
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An optimization model for restructuring distribution network considering grid-connected security constraints of DGs |
WANG Bo,YU Yinshu,HE Xu,WANG Qing,ZHOU Niancheng,WU Jiafang |
(Ningbo Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Ningbo 315000, China;State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University, Chongqing 400044, China) |
Abstract: |
This paper proposes an optimization model for restructuring distribution network in consideration of grid-connected security constraints of DGs. First, the problems of improving regional load balance and ensuring emergency reserve of the upper-level power supply not exceeded after distributed generation connection are analyzed, and the distributed generations’ return current and the upper-level power reserve capacity are collectively called distributed generation grid-connected safety constraints. And then, two evaluation indexes of regional power total substation capacity and 10 kV feeders’ network structure are proposed. Subsequently, this paper proposes an optimization model for restructuring 10 kV distribution network in considering grid-connected security constraints of DGs. Immune genetic algorithm is used to solve the model that regional power total substation capacity is qualified but 10 kV feeders’ network structure is not. Finally, the effectiveness of the proposed method is verified by simulation analysis of a practical 10 kV distribution network’s restructuring and optimization problem. This work is supported by National Natural Science Foundation of China (No. 51577018). |
Key words: distributed power sources restructuring distribution network grid-connected security constraints immune genetic algorithm |