改善不平衡配电网电压质量的分布式储能序次优化配置方法

doi:10.12204/j.issn.1000-7229.2022.01.010

电力建设 ›› 2022, Vol. 43 ›› Issue (1): 87-95.doi: 10.12204/j.issn.1000-7229.2022.01.010

改善不平衡配电网电压质量的分布式储能序次优化配置方法

李英量(), 蔡鹤鸣, 王康, 孙西瑶, 周丽雯, 高兆迪

西安石油大学电子工程学院,西安市 710065

收稿日期:2021-07-22 出版日期:2022-01-01 发布日期:2021-12-21
通讯作者: 李英量 E-mail:yingliang.li@hotmail.com
作者简介:蔡鹤鸣(1998),男,硕士研究生,主要研究方向为有源配电网优化运行;
王康(1996),男,硕士研究生,主要研究向为无功电压控制、配电网规划;
孙西瑶(1997),女,硕士研究生,主要研究方向为电力系统继电保护;
周丽雯(1997),女,硕士研究生,主要研究方向为电力系统优化调度;
高兆迪(1995),女,硕士研究生,主要研究方向为电力系统机组组合。
基金资助:
陕西省自然科学基础研究计划项目(2020JM-542);陕西省教育厅科研计划项目资助(21JK0843);陕西省重点研发计划项目(2021KW-33);西安石油大学研究生创新与实践能力培养项目(YCS21212117)

Sequence Optimal Configuration of Distributed Energy Storage for Improving Voltage Quality of Unbalanced Distribution Network

LI Yingliang(), CAI Heming, WANG Kang, SUN Xiyao, ZHOU Liwen, GAO Zhaodi

School of Electronic Engineering, Xi’an Shiyou University, Xi’an 710065, China

Received:2021-07-22 Online:2022-01-01 Published:2021-12-21
Contact: LI Yingliang E-mail:yingliang.li@hotmail.com
Supported by:
Natural Science Basic Research Program of Shaanxi Province(2020JM-542);Scientific Research Program Funded by Shaanxi Provincial Education Department(21JK0843);Key Research Program of Shaanxi Province(2021KW-33);Postgraduate Innovation and Practice Ability Training Program of Xi’an Shiyou University(YCS21212117)

摘要/Abstract

摘要：

分布式储能(distributed energy storage,DES)具有灵活的运行特性,通过合理配置DES可使其有效服务于有源配电网的电压管理。现有以电压管理为导向的DES优化配置研究通常基于平衡网络模型来分析储能运行特性对系统电压的影响,但配电网实际上是三相不平衡的。为此提出一种基于电压灵敏度分析的不平衡配电网DES序次优化配置方法,从改善网络电压的角度研究不平衡配电网中DES的最佳配置方法。首先基于综合电压灵敏度分析确定DES接入位置;其次兼顾系统运行的经济性,以DES一次投资和运维成本最小为目标优化DES的接入容量;最后通过改进IEEE 33节点三相配电网进行算例分析,验证了所提DES序次优化配置方法可有效改善不平衡配电网的电压质量。

关键词: 分布式储能, 电压管理, 不平衡配电网, 灵敏度分析, 序次配置

Abstract:

Distributed energy storage (DES) has flexible operating characteristics and can be properly configured to effectively serve the voltage management in the active distribution network. The existing studies on voltage management-oriented DES optimization configuration are usually focused on the balanced network model to analyze the impact of energy storage operation characteristics on the system voltage, while the real distribution networks are actually unbalanced. To this end, a method for sequence optimization of DES in unbalanced distribution networks applying voltage sensitivity analysis is proposed, and the optimal configuration of DES in unbalanced distribution networks is studied from the perspective of improving the network voltage. Firstly, the DES access location is determined according to the comprehensive voltage sensitivity analysis; secondly, taking into account the economy of system operation, the access capacity of DES with the goal of minimizing the investment and maintenance cost of DES is optimized. Finally, by improving the IEEE 33-node three-phase distribution network to carry out a calculation example analysis, it is verified that the proposed DES sequence optimization configuration method can effectively improve the voltage quality of the unbalanced distribution network.

Key words: distributed energy storage, voltage management, unbalanced distribution network, sensitivity analysis, sequence configuration

中图分类号:

TM715

李英量, 蔡鹤鸣, 王康, 孙西瑶, 周丽雯, 高兆迪. 改善不平衡配电网电压质量的分布式储能序次优化配置方法[J]. 电力建设, 2022, 43(1): 87-95.

LI Yingliang, CAI Heming, WANG Kang, SUN Xiyao, ZHOU Liwen, GAO Zhaodi. Sequence Optimal Configuration of Distributed Energy Storage for Improving Voltage Quality of Unbalanced Distribution Network[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(1): 87-95.

图/表 10

图1 DESs序次配置流程

Fig.1 Flow chart of sequence configuration of DESs

图2 改进IEEE 33节点配电网系统示意图

Fig.2 System diagram of improved IEEE 33-node system

图3 典型日光伏出力曲线

Fig.3 Typical daily PV output curve

图4 系统三相日负荷曲线

Fig.4 Three-phase daily load curve

表1 仿真参数及相关约束设置

Table 1 Simulation parameters and related constraint settings

表2 不同场景下的优化结果

Table 2 Optimization results for different scenarios

图5 不同场景下的系统性能

Fig.5 System performance in different scenarios

图6 优化前后负荷曲线

Fig.6 Load curves before and after optimization

图7 场景5中两台储能装置的运行情况

Fig.7 Operation state of two DESs in scenario 5

图8 优化前后网络各节点综合电压灵敏度方差

Fig.8 Variance of comprehensive voltage sensitivity of each node in the network before and after optimization

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改善不平衡配电网电压质量的分布式储能序次优化配置方法

Sequence Optimal Configuration of Distributed Energy Storage for Improving Voltage Quality of Unbalanced Distribution Network

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