Distributed Power Access and Energy Storage Configuration in Active Distribution Network

doi:10.12096/j.2096-4528.pgt.21068

Abstract

Abstract:

Distributed energy access and energy storage configuration are the key links in the design of active distribution network. It is of great significance to study the design method for supporting the scientific development of active distribution network. On the basis of full research and demonstration, the content of active distribution network scheme design, and the technical principles of the overall design of active distribution network were determined firstly, which played a macro guiding role in the scheme design. In addition, an in-depth study of the capacity configuration of distributed power sources and energy storage systems in the active distribution network was carried out, and a general method of distributed power access and energy storage capacity optimization configuration was proposed, which provided technical support for the design of active distribution network scheme. Finally, combined with practical engineering cases, the rationality of the method was verified for reference by designers.

Key words: distributed energy, active distribution network, distributed power, energy storage configuration, microgrid, new energy

CLC Number:

TK01

Jianwei LIU, Xuebin LI, Xiaoou LIU. Distributed Power Access and Energy Storage Configuration in Active Distribution Network[J]. Power Generation Technology, 2022, 43(3): 476-484.

Figures/Tables 8

References 28

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项目	集中接入	分散接入
电能质量	容量大，对电能质量的影响较大；单点集中接入对电压支撑作用弱于分布多点接入	容量小，对电能质量的影响较小；接入点越接近末节点，对电压支撑作用越明显
经济性	将分散光伏集中汇集于一点，电缆投资较大；网损较大；涉及与配电自动化的协调控制，运行管理成本较高；为达到同样的谐波水平，对逆变器要求更高	就地接入，电缆投资较小；网损较小；运行管理成本较低；为达到同样的谐波水平，对逆变器要求较小，发电商投资较小
运行	对继电保护要求较高；需要与配电自动化协调控制	继电保护较简单；不影响配电自动化系统的运行
管理维护	便于发电商管理；不存在由产权问题导致的接入困难问题	不便于发电商管理；对于低压配变和分布式电源资产所有者不同的情况，可能会存在接入低压的困难问题

项目	集中接入	分散接入
电能质量	容量大，对电能质量的影响较大；单点集中接入对电压支撑作用弱于分布多点接入	容量小，对电能质量的影响较小；接入点越接近末节点，对电压支撑作用越明显
经济性	将分散光伏集中汇集于一点，电缆投资较大；网损较大；涉及与配电自动化的协调控制，运行管理成本较高；为达到同样的谐波水平，对逆变器要求更高	就地接入，电缆投资较小；网损较小；运行管理成本较低；为达到同样的谐波水平，对逆变器要求较小，发电商投资较小
运行	对继电保护要求较高；需要与配电自动化协调控制	继电保护较简单；不影响配电自动化系统的运行
管理维护	便于发电商管理；不存在由产权问题导致的接入困难问题	不便于发电商管理；对于低压配变和分布式电源资产所有者不同的情况，可能会存在接入低压的困难问题

分布式电源项目	分布式电源类型	总容量/ MW	接入布局
污水处理厂	光伏发电	1.1	集中接入；升压为10 kV后，接入10 kV配网
停车场车篷	光伏发电	0.405	集中接入；停车场车篷及园区部分光伏发电共约1 MW，园区燃气三联供发电项目拟形成微网，以10 kV接入10 kV配网中，此微网中拟配置0.5 MW储能装置
园区燃气三联供	燃气轮机	1.489
某大道	光伏发电	终期4，初期1.5	沿道布置，分散接入；初期范围内道路沿线发电容量约1.5 MW，拟集中分成3块分别汇集后，接入就近10 kV前置环网装置的10 kV间隔
A地块	风力发电	5.4	集中接入；10 kV专线直接接入和畅路110 kV变电站10 kV母线，此系统配置1.5 MW储能装置

分布式电源项目	分布式电源类型	总容量/ MW	接入布局
污水处理厂	光伏发电	1.1	集中接入；升压为10 kV后，接入10 kV配网
停车场车篷	光伏发电	0.405	集中接入；停车场车篷及园区部分光伏发电共约1 MW，园区燃气三联供发电项目拟形成微网，以10 kV接入10 kV配网中，此微网中拟配置0.5 MW储能装置
园区燃气三联供	燃气轮机	1.489
某大道	光伏发电	终期4，初期1.5	沿道布置，分散接入；初期范围内道路沿线发电容量约1.5 MW，拟集中分成3块分别汇集后，接入就近10 kV前置环网装置的10 kV间隔
A地块	风力发电	5.4	集中接入；10 kV专线直接接入和畅路110 kV变电站10 kV母线，此系统配置1.5 MW储能装置

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