发电技术 ›› 2025, Vol. 46 ›› Issue (1): 113-125.DOI: 10.12096/j.2096-4528.pgt.23182

• 新能源 • 上一篇    

含电能路由器的光伏配电网电压越限问题潮流优化研究

杨剑锋, 李婷, 杨爱民, 冯子宁   

  1. 兰州交通大学自动化与电气工程学院,甘肃省 兰州市 730070
  • 收稿日期:2023-12-28 修回日期:2024-03-08 出版日期:2025-02-28 发布日期:2025-02-27
  • 作者简介:杨剑锋(1980),男,博士,教授,研究方向为新能源发电与节能管理、分布式网络化预测控制,jfyang@lzjtu.edu.cn
    李婷(1999),女,硕士研究生,研究方向为分布式光伏过电压控制、电能路由器与配电网能量管理及优化,11210373@stu.lzjtu.edu.cn;
    杨爱民(1995),男,硕士研究生,研究方向为光伏并网逆变器模型预测控制与分布式光伏,1639172653@qq.com
    冯子宁(2000),男,硕士研究生,研究方向为光储发电系统中直流能量路由器设计研究,928694516@qq.com
  • 基金资助:
    甘肃省自然科学基金(23JRRA868)

Research on Tidal Optimization of Voltage Overrun Problem in Photovoltaic Distribution Network With Electrical Energy Router

Jianfeng YANG, Ting LI, Aimin YANG, Zining FENG   

  1. School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu Pronvince, China
  • Received:2023-12-28 Revised:2024-03-08 Published:2025-02-28 Online:2025-02-27
  • Supported by:
    National Natural Science Foundation of Gansu Province(23JRRA868)

摘要:

目的 随着高渗透率分布式光伏接入配电网,功率倒送、电压越限等问题愈发严重。为此,提出了一种基于改进的黑洞优化算法的电能路由器优化方案。 方法 通过对电能路由器进行端口稳态建模,建立了含多端口电能路由器的高渗透光伏配电网统一模型,并针对该模型提出了电压偏差与线路损耗最小的优化目标。在甘肃某地区的配电网简化模型下,采用改进的黑洞优化算法进行优化求解,并对比分析了加入电能路由器前后配电网系统的数据。 结果 光伏输出功率为0%、50%、100%时,电压最小(最大值)分别提升(降低)了10.86%、3.16%、9.64%,各节点电压幅值控制在0.93~1.07 pu范围内;线路平均损耗下降了57.94%~81.56%。 结论 通过加入电能路由器以及采用相应的优化策略,实现了分布式光伏配电网的潮流优化。研究成果对提高分布式光伏在配电网中的渗透率具有重要意义。

关键词: 新能源, 光伏发电, 光伏配电网, 电能路由器, 稳态建模, 潮流优化, 改进的黑洞优化算法, 电压越限

Abstract:

Objectives With the access of high-penetration distributed photovoltaic to the distribution network, the problems of power back-feeding and voltage overrun become more and more serious. Therefore, an optimization scheme of electrical energy router based on improved black hole algorithm is proposed. Methods A unified model of the high-penetration photovoltaic distribution network with multi-port electrical energy router is established by port steady state modeling of electrical energy router. The optimization objectives of voltage deviation and network loss minimization are proposed for the model. Under the simplified model of the distribution network in a certain area of Gansu province, the improved black hole optimization algorithm is used to optimize the solution, and the data of the distribution network system before and after the addition of the electrical energy router are compared and analyzed. Results When the photovoltaic output power are 0%, 50% and 100%, the voltage min/max values are improved/reduced by 10.86%, 3.16% and 9.64%, respectively. The voltage amplitude at each node is controlled within the range of 0.93-1.07 pu. The average line loss is decreased by 57.94%-81.56%. Conclusions The tidal optimization of the distributed photovoltaic distribution network is achieved by incorporating electrical energy router and performing the corresponding optimization strategy. The research results are of great significance to improve the penetration of distributed photovoltaic in the distribution grid.

Key words: new energy, photovoltaic power generation, photovoltaic distribution network, electrical energy router, steady state modelling, tidal optimization, improved black hole optimization algorithm, voltage overrun

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