引用本文: | 叶学顺,何开元,刘科研.有源配电网重构与多级无功联动优化[J].电力系统保护与控制,2019,47(13):115-123.[点击复制] |
YE Xueshun,HE Kaiyuan,LIU Keyan.Network reconfiguration and multi-level reactive power coordination optimization in active distribution network[J].Power System Protection and Control,2019,47(13):115-123[点击复制] |
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摘要: |
优化控制策略是提升分布式电源消纳能力的核心技术,也是有源配电网安全、经济、高效、优质运行的重要保障。为解决分布式电源接入后引起的潮流分布剧变、电压抬升、源荷分布不均衡等问题,提出了配电网拓扑重构以及有载调压器、补偿电容器等多级无功调节设备联动优化策略,建立了含网损、负荷均衡以及节点电压偏差的多目标综合优化模型。通过参数自适应动态调节及变维数和声记忆库机制,提出了改进型多目标和声搜索算法对优化模型进行求解,大幅提高算法收敛速度与寻优能力。在IEEE 33节点算例中进行了多个场景的测试验证,并将改进型多目标和声搜索算法与多目标和声搜索算法、基本和声搜索算法进行了比较,结果表明模型和算法的有效性。 |
关键词: 有源配电网 重构 无功 联动优化 改进型多目标和声搜索算法 |
DOI:10.7667/PSPC20191316 |
投稿时间:2018-07-17修订日期:2018-11-20 |
基金项目:国家电网公司科技项目(PD71-18-001)“基于信息物理系统的复杂配电网建模与数模混合仿真技术研究” |
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Network reconfiguration and multi-level reactive power coordination optimization in active distribution network |
YE Xueshun,HE Kaiyuan,LIU Keyan |
(China Electric Power Research Institute Co., Ltd., Beijing 100192, China) |
Abstract: |
Optimal control strategy is one of the key technologies to improve the consumptive ability of distributed generations, which is also an important guarantee of safety, economy, efficiency and high quality during the operation of active distribution network. To solve the problems caused by high penetration of distributed generations, such as power flow direction change, voltage uplift, load unbalance, etc., this paper proposes a coordination optimization strategy which combines topology reconfiguration and multi-level reactive power compensation devices (under-load tap changer, bus capacitor, and feeder capacitor). A multi-objective optimization model based on active power loss, load balancing index and voltage deviation index is established. Through parameter adaptive adjustment and harmony memory library dynamic modification method, an improved multi-objective harmony search algorithm is proposed to solve this optimization model, which can greatly improve convergence speed and optimization ability of the algorithm. A number of experiments with IEEE 33 node test systems in different cases and scenarios are carried out, the computation speed and optimization performance of improved multi-objective harmony search algorithm and multi-objective harmony search algorithm, basic multi-objective harmony search algorithm are compared. The results show that the model and algorithm are feasible and effective. This work is supported by Science and Technology Project of State Grid Corporation of China (No. PD71-18-001) “Technical Research of Complex Distribution Network Modelling and Digit-mode Hybrid Simulation based on Cyber Physical Systems”. |
Key words: active distribution network reconfiguration reactive power coordination optimization improved multi- objective harmony search algorithm |