含新能源接入的配电网中分布式储能系统控制策略

doi:10.12204/j.issn.1000-7229.2021.05.009

电力建设 ›› 2021, Vol. 42 ›› Issue (5): 81-89.doi: 10.12204/j.issn.1000-7229.2021.05.009

含新能源接入的配电网中分布式储能系统控制策略

董新伟¹, 裴晨晨¹, 邓薇², 李滨³, 戴晖⁴

1.中国矿业大学电气与动力工程学院,江苏省徐州市 221116
2.国网湖北省电力有限公司武汉供电分公司,武汉市 430077
3.国网江苏省电力有限公司丰县供电分公司,江苏省徐州市 221700
4.国网江苏省电力有限公司淮安供电分公司,江苏省淮安市 223001

收稿日期:2020-09-12 出版日期:2021-05-01 发布日期:2021-05-06
通讯作者: 裴晨晨
作者简介:董新伟(1971),男,博士,副教授,主要研究方向为电力系统自动化控制、电机控制;|邓薇(1983),女,硕士,高级工程师,主要从事储能、新能源、电网规划、智能配电网方面的研究工作;|李滨(1986),男,硕士,高级工程师,主要从事储能、新能源、电网规划、智能配电网方面的研究工作;|戴晖(1984),男,硕士,高级工程师,主要从事储能、新能源、电网规划、智能配电网方面的研究工作。
基金资助:
国网江苏电力有限公司科技项目“电网侧储能促进新能源消纳应用研究”(JSDL-2019-ZB02-FB26)

Research on Control Strategy of Distributed Energy Storage System in Distribution Network with New Energy

DONG Xinwei¹, PEI Chenchen¹, DENG Wei², LI Bin³, DAI Hui⁴

1. College of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu Province, China
2. Wuhan Power Supply Company of State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China
3. Fengxian Power Supply Company of State Grid Jiangsu Electric Power Co., Ltd., Xuzhou 221700, Jiangsu Province, China
4. Huai’an Power Supply Company of State Grid Jiangsu Electric Power Co., Ltd., Huai’an 223001, Jiangsu Province, China

Received:2020-09-12 Online:2021-05-01 Published:2021-05-06
Contact: PEI Chenchen

摘要/Abstract

摘要：

高比例间歇性新能源的接入,给配电网稳定带来了极大的影响,文章提出一种基于双层控制提高配电网电压稳定性的控制策略。双层控制分上下层执行,上层稳定电压,确定各节点电压满足安全运行条件和电压偏差最小时储能电站群总有功/无功功率;下层优化分配上层运行结果,考虑电网运行经济性及新能源利用率,对各储能电站进行功率分配。控制过程分时间尺度执行,并将运行结果上传至储能检测控制模块,此模块再根据各储能电站的实时状态最终确定各储能单元的工作模式及功率分配。在IEEE 33节点系统中对提出的控制策略进行验证,利用粒子群算法计算储能功率分配结果,结果证明,基于时间尺度的储能电站双层控制策略合理、有效。

关键词: 储能系统, 双层控制, 多时间尺度执行, 有功-无功协调控制, 电压稳定性

Abstract:

High-proportion integrating of intermittent new energy has a great impact on the stability of distribution network. A control strategy based on double-layer control to improve the voltage stability of distribution network is proposed. The upper-level controls the voltage stabilization to determine the total active/reactive power of the energy storage power station group for each node to meet the voltage safety operation and the minimum voltage deviation. The lower-level control optimizes the distribution of upper-level operation results, and allocates the power of each energy storage power station considering the operation economy of power grid and the utilization rate of new energy. The control process is implemented in multiple time scales, and the operation results are uploaded to the energy storage detection and control module, which finally determines the working mode and power distribution of each energy storage unit according to the real-time status of each energy storage station. IEEE 33-bus system is used to verify the proposed control method. The result of energy storage power distribution is calculated by particle swarm optimization algorithm, which proves the rationality and effectiveness of implementing double-layer control in multiple time-scales.

Key words: energy storage system, double-layer control, multiple time-scale execution, active and reactive coordinated control, voltage stability

中图分类号:

TM734

董新伟, 裴晨晨, 邓薇, 李滨, 戴晖. 含新能源接入的配电网中分布式储能系统控制策略[J]. 电力建设, 2021, 42(5): 81-89.

DONG Xinwei, PEI Chenchen, DENG Wei, LI Bin, DAI Hui. Research on Control Strategy of Distributed Energy Storage System in Distribution Network with New Energy[J]. ELECTRIC POWER CONSTRUCTION, 2021, 42(5): 81-89.

图/表 15

图1 多时间尺度的双层控制过程框架图

Fig.1 Multiple time-scale frame diagram of double-layer control process

图2 PSO双层控制算法求解流程

Fig.2 Flow chart of PSO double-layer control algorithm

图3 IEEE 33节点仿真系统图

Fig.3 Diagram of IEEE 33-node simulation system

图4 储能参与前后节点6电压变化对比

Fig.4 Comparison of voltage at node 6 with and without energy storage

图5 储能参与前后节点11电压变化对比

Fig.5 Comparison of voltage at node 11 with and without energy storage

图6 储能参与前后节点25电压变化对比

Fig.6 Comparison of voltage at node 25 with and without energy storage

图7 DESS1有功无功出力

Fig.7 Active and reactive output of DESS1

图8 DESS2有功无功出力

Fig.8 Active and reactive output of DESS2

图9 DESS3有功无功出力

Fig.9 Active and reactive output of DESS3

图10 储能电站充放电功率

Fig.10 Charging and discharging power of energy storage power stations

表1 各储能电站的工作模式

Table 1 Working mode of each energy storage station

图11 有功网络损耗率对比

Fig.11 Comparison of active power loss rate

图12 储能参与前后有功网损对比

Fig.12 Comparison of active power loss before and after energy storage participation

图13 新能源损耗率对比

Fig.13 Comparison of new energy consumption rate

图14 储能参与前后新能源出力损耗对比

Fig.14 Comparison of new energy output loss before and after energy storage participation

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含新能源接入的配电网中分布式储能系统控制策略

Research on Control Strategy of Distributed Energy Storage System in Distribution Network with New Energy

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