电气工程学报 ›› 2022, Vol. 17 ›› Issue (4): 282-288.doi: 10.11985/2022.04.030

• 电力系统 • 上一篇    下一篇

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含分布式光伏的配电网规划设计研究*

宁超(), 杨俊(), 朱咏明(), 刘莎(), 李卫华()   

  1. 国网新疆电力有限公司昌吉供电公司 昌吉 831100
  • 收稿日期:2020-12-17 修回日期:2021-10-01 出版日期:2022-12-25 发布日期:2023-02-03
  • 作者简介:宁超,男,1972年生,中级工程师。主要研究方向为配电网规划。E-mail:ungyjktv@21cn.com
    杨俊,男,1975年生,工程师。主要研究方向为配电网规划。E-mail:ungyj3455ktv@21cn.com
    朱咏明,男,1978年生,中级工程师。主要研究方向为配电网规划。E-mail:ung3546666yjktv@21cn.com
    刘莎,男,1979年生,高级工程师。主要研究方向为配电网规划。E-mail:ung356yjktv@21cn.com
    李卫华,男,1969年生,中级工程师。主要研究方向为配电网规划。E-mail:ung756yjktv@21cn.com
  • 基金资助:
    *国网新疆电力有限公司科技资助项目(SGXJCJ00KJJS2001417)

Research on Distribution Network Planning and Design with Distributed Photovoltaic System

NING Chao(), YANG Jun(), ZHU Yongming(), LIU Sha(), LI Weihua()   

  1. Changji Power Supply Company, State Grid Xinjiang Electric Power Co., Ltd., Changji 831100
  • Received:2020-12-17 Revised:2021-10-01 Online:2022-12-25 Published:2023-02-03

摘要:

针对配电网有源设计网络中有源系统的功率消耗严重、电源接入时扰动较大的问题,采用分布式光伏电源作为有源系统,对接入的配电网进行重新规划设计。通过设计光伏电源接入配电网的判定系统,保证分布式光伏接入电网能够更加快速有效;对光伏接入的节点电路进行等效分析,能够精确把控节点位置的运行状态;运用分布式数据信赖域算法对接入系统功率数据限制,保证光伏接入电网时的扰动最小。最后通过试验记录接入节点位置的功率数据,发现接入节点位置的相对偏差不会超过1%,节点40为功率最大接入位置,节点10为最小接入位置;根据试验数据画出谐波扰动对比曲线,发现在P40处达到最大扰动对比;通过Power Factory仿真软件与传统电源接入方法进行仿真对比,发现所提设计规划节点延时时间几乎为零,电源接入过程更加顺畅。从而验证了所提接入规划方案的优越性,证明了该设计方案的可行性。

关键词: 分布式光伏电源, 配电网总体设计, 节点等效电路, 光伏接入方法判定, 分布式数据信赖域算法

Abstract:

The power consumption of the active system in the active design network of distribution network is serious, and the disturbance of the power supply is large. The distributed photovoltaic power supply is used as the active system to re-design the distribution network. By designing the decision system of photovoltaic power access to the distribution network, the distributed photovoltaic access to the power network can be more quick and effective, and the node circuit of photovoltaic access can be analyzed equivalently to control the operation state of the node position accurately. The distributed data trust region algorithm is used to limit the power data of the access system and ensure the minimum disturbance when the photovoltaic is connected to the power grid. Finally, the power data of the access node position is recorded by experiment, and it is found that the relative deviation of the access node position is less than 1%, the node 40 is the maximum power access position, and the node 10 is the minimum access position. According to the experimental data, the contrast curve of harmonic disturbance is drawn, and it is found that the maximum disturbance contrast is reached at P40. Compared with the traditional power access method by the Power Factory simulation software, it is found that the delay time of the designed node is almost zero, the process of power connection is much smoother. Thus the superiority of the access planning scheme is verified and the feasibility of the design scheme is proved.

Key words: Distributed photovoltaic power supply, distribution network design, node equivalent circuit, photovoltaic access method determination, distributed data trust region algorithm

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