考虑微电网灵活性资源属性的配电网规划方法

doi:10.12204/j.issn.1000-7229.2022.06.009

电力建设 ›› 2022, Vol. 43 ›› Issue (6): 84-92.doi: 10.12204/j.issn.1000-7229.2022.06.009

考虑微电网灵活性资源属性的配电网规划方法

徐加银¹(), 汪涛¹(), 王加庆²(), 刘琛³(), 马英浩³()

1.国网安徽省电力有限公司经济技术研究院, 合肥市 230022
2.国网安徽省电力有限公司,合肥市 230022
3.合肥工业大学电气与自动化工程学院,合肥市 230009

收稿日期:2021-11-11 出版日期:2022-06-01 发布日期:2022-05-31
通讯作者: 马英浩 E-mail:xujiayinah1989@163.com;hfut_wt@163.com;wangjqah@163.com;liuchen0318@163.com;yinghao_ma@126.com
作者简介:徐加银(1989),男,硕士,工程师,主要研究方向为配电网规划与优化运行,E-mail:xujiayinah1989@163.com
汪涛(1992),男,博士,工程师,主要研究方向为配电网规划与优化运行,E-mail: hfut_wt@163.com
王加庆(1980),男,硕士,高级工程师,主要研究方向为配电网规划,E-mail:wangjqah@163.com
刘琛(1998),男,硕士研究生,主要研究方向为电力系统规划与优化运行,E-mail:liuchen0318@163.com
基金资助:
国网安徽省电力有限公司科技项目(521209200013)

Distribution Network Planning Method Considering Flexibility Resource Attribute of Microgrids

XU Jiayin¹(), WANG Tao¹(), WANG Jiaqing²(), LIU Chen³(), MA Yinghao³()

1. Economic and Technology Research Institute of State Grid Anhui Electric Power Co., Ltd., Hefei 230022, China
2. State Grid Anhui Electric Power Co., Ltd., Hefei 230022, China
3. Department of Electrical and Automation Engineering, Hefei University of Technology,Hefei 230009, China

Received:2021-11-11 Online:2022-06-01 Published:2022-05-31
Contact: MA Yinghao E-mail:xujiayinah1989@163.com;hfut_wt@163.com;wangjqah@163.com;liuchen0318@163.com;yinghao_ma@126.com
Supported by:
State Grid Anhui Electric Power Co., Ltd. Research Program(521209200013)

摘要/Abstract

摘要：

针对含微电网的配电网,提出了一种考虑微电网灵活性资源属性的配电网规划方法,该方法从变电站规划和网架规划两阶段考虑了微电网的灵活性资源属性。首先,建立了微电网内各灵活性资源的数学模型,进而组成微网的对外等效模型;然后,通过更新定容公式以及在网架规划中添加约束条件来考虑灵活性资源;最后,建立以配电网投资和运行成本最小为目标函数的规划模型,并基于改进的遗传算法进行求解。通过含3个微电网的待规划区域进行算例设计和仿真,结果表明文章提出的规划方法可以在成本少量增加的情况下提升系统传输灵活性,使得未来配电网运行过程中出现分布式电源波动或负荷预测不准确时,线路留有足够的灵活性供主网或微电网进行功率传输,证明了所提出模型的合理性和有效性。

关键词: 微电网, 灵活性资源, 变电站规划, 网架规划, 改进遗传算法, 配电网灵活性

Abstract:

Aiming at the distribution network with microgrid, a distribution network planning method considering the flexibility resource attribute of microgrids is proposed. The flexibility resource attribute of microgrids is considered from substation planning and grid planning. Firstly, the mathematical models of flexible resources in microgrids are established and then the external equivalent model of microgrids is formed. Then, the flexibility resources are considered by updating the constant volume formula and adding constraints in network planning. Finally, a distribution network programming model with minimum investment and operating cost as the objective function is established and it is solved by improved genetic algorithm. Case study is designed according to the area to be planned with three microgrids. The results show that the planning method proposed in the paper can improve the system transmission flexibility with a small increase in cost, so when the distributed power supply fluctuates or the load forecast is inaccurate during the operation of the distribution network in the future, the line will have enough flexibility for the main network or the microgrid to transmit power, which proves the rationality and effectiveness of the proposed model.

Key words: microgrid, flexibility resource, substation planning, network planning, improved genetic algorithm, distribution network flexibility

中图分类号:

TM715

徐加银, 汪涛, 王加庆, 刘琛, 马英浩. 考虑微电网灵活性资源属性的配电网规划方法[J]. 电力建设, 2022, 43(6): 84-92.

XU Jiayin, WANG Tao, WANG Jiaqing, LIU Chen, MA Yinghao. Distribution Network Planning Method Considering Flexibility Resource Attribute of Microgrids[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(6): 84-92.

图/表 7

图1 线路交叉判定流程图

Fig.1 Flow chart of line cross decision

图2 待规划区域示意图

Fig.2 Schematic diagram of the area to be planned

图3 微电网等效出力

Fig.3 Equivalent output of the microgrids

图4 负荷分区及变电站规划结果

Fig.4 Load zoning and substation planning results

图5 网架规划结果

Fig.5 Planning result of network frame

表1 Economic cost of each scheme 万元

Table 1

图6 微电网上游负荷功率

Fig.6 Upstream load power of the microgrids

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考虑微电网灵活性资源属性的配电网规划方法

Distribution Network Planning Method Considering Flexibility Resource Attribute of Microgrids

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