考虑新能源消纳和网损的分布式光伏集群出力评估方法

doi:10.12204/j.issn.1000-7229.2022.10.013

电力建设 ›› 2022, Vol. 43 ›› Issue (10): 136-146.doi: 10.12204/j.issn.1000-7229.2022.10.013

考虑新能源消纳和网损的分布式光伏集群出力评估方法

李琰(), 吕南君(), 刘雪涛(), 胡俊杰(), 徐衍会()

新能源电力系统国家重点实验室(华北电力大学),北京市 102206

收稿日期:2022-03-23 出版日期:2022-10-01 发布日期:2022-09-29
通讯作者: 胡俊杰 E-mail:leeyan@ncepu.edu.cn;lvnanjun@foxmail.com;liuxt@ncepu.edu.cn;junjiehu@ncepu.edu.cn;xuyanhui23@sohu.com
作者简介:李琰(1998),女,硕士研究生,主要研究方向为分布式能源优化运行,E-mail: leeyan@ncepu.edu.cn;
吕南君(1995),男,硕士研究生,主要研究方向为新能源电力系统,E-mail: lvnanjun@foxmail.com;
刘雪涛(1997),女,硕士研究生,主要研究方向为分布式能源系统优化运行,E-mail: liuxt@ncepu.edu.cn;
徐衍会(1978),男,博士,教授,博士生导师,主要研究方向为动态电力系统分析与负荷建模,E-mail: xuyanhui23@sohu.com。
基金资助:
国家重点研发计划项目(2021YFB4000104)

Output Evaluation Method of Distributed Photovoltaic Cluster Considering Renewable Energy Accommodation and Power Loss of Network

LI Yan(), LÜ Nanjun(), LIU Xuetao(), HU Junjie(), XU Yanhui()

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), Beijing 102206, China

Received:2022-03-23 Online:2022-10-01 Published:2022-09-29
Contact: HU Junjie E-mail:leeyan@ncepu.edu.cn;lvnanjun@foxmail.com;liuxt@ncepu.edu.cn;junjiehu@ncepu.edu.cn;xuyanhui23@sohu.com
Supported by:
The National Key Research and Development Program of China(2021YFB4000104)

摘要/Abstract

摘要：

为解决配网中分布式光伏渗透率持续升高引起的网损增加、功率倒送、电压越限等问题,在对分布式光伏进行集群划分的基础上,提出了一种综合考虑新能源消纳和网损的分布式光伏集群出力评估方法。首先,以基于电气距离的模块度指标和有功平衡度指标作为综合划分指标,利用遗传算法对配网中的分布式光伏进行集群划分;然后,在集群划分结果的基础上,考虑储能的调节作用及网络安全稳定约束,以包含网损成本和弃光成本的配电系统经济成本最低为优化目标,提出了分布式光伏集群出力评估方法;最后,通过在扬州某地实际41节点系统上进行仿真分析,证明了所提评估方法的可行性和有效性,所提评估方法可以根据调度中心的需求提供分布式光伏集群出力评估数据。

关键词: 分布式光伏集群, 新能源消纳, 出力评估

Abstract:

In order to solve the problems of the increasing power loss of network, power reverse transmission, voltage out-of-limit and so on, caused by the continuous increase of distributed photovoltaic penetration in distribution network, according to the cluster division of distributed photovoltaic generation, an output evaluation method of distributed photovoltaic cluster considering renewable energy accommodation and power loss of network is proposed. Firstly, the modular index based on electrical distance and active-power balance index are used as comprehensive division indices, and the distributed photovoltaic generation in distribution network is divided into clusters by using genetic algorithm. Then, on the basis of the cluster division results, considering the regulation effect of energy storage and the constraints of network security and stability, the output evaluation method of distributed photovoltaic cluster is proposed with the lowest economic cost of distribution system including the power-loss cost of network and distributed photovoltaic generation. Finally, the feasibility and effectiveness of the evaluation method proposed in this paper are proved by simulation analysis on an actual 41-node system in Yangzhou. The proposed method can provide output evaluation data of distributed photovoltaic cluster according to the demand of dispatching center.

Key words: distributed photovoltaic cluster, renewable energy accommodation, output evaluation

中图分类号:

TM715

李琰, 吕南君, 刘雪涛, 胡俊杰, 徐衍会. 考虑新能源消纳和网损的分布式光伏集群出力评估方法[J]. 电力建设, 2022, 43(10): 136-146.

LI Yan, LÜ Nanjun, LIU Xuetao, HU Junjie, XU Yanhui. Output Evaluation Method of Distributed Photovoltaic Cluster Considering Renewable Energy Accommodation and Power Loss of Network[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(10): 136-146.

图/表 16

图1 网络邻接矩阵的编码方式

Fig.1 Coding mode of network adjacency matrix

图2 基于遗传算法的集群划分流程

Fig.2 Flow chart of cluster partition based on genetic algorithm

图3 41节点配网系统拓扑

Fig.3 Topology of 41-node distribution network system

表1 配网线路容量约束

Table 1 Constraint of line capacity of distribution network

表2 分布式光伏设置

Table 2 Parameter of distributed photovoltaic generation

图4 负荷有功需求及光伏预测有功出力曲线

Fig.4 Load active-power demand and forecast photovoltaic output curve

图5 综合性能指标变化曲线

Fig.5 Change curve of comprehensive performance index

图6 集群划分结果

Fig.6 Results of cluster division

图7 分布式光伏出力结果

Fig.7 Result of distributed photovoltaic output

表3 经济成本

Table 3 Economic cost 元

表4 13:00分布式光伏集群渗透率及弃光率

Table 4 Permeability and rejection rate of distributed photovoltaic clusters at 13: 00

图8 集群间交换功率

Fig.8 Power exchanged between clusters

表5 优化结果对比

Table 5 Comparison of optimization results

图9 系统网损

Fig.9 Power loss of distribution system

图10 配网节点电压曲线

Fig.10 Curve of node voltages in distribution network

表A1 不同网损率需求下的优化结果

Table A1 Optimization results under different network loss rate requirements

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考虑新能源消纳和网损的分布式光伏集群出力评估方法

Output Evaluation Method of Distributed Photovoltaic Cluster Considering Renewable Energy Accommodation and Power Loss of Network

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