摘要
针对城市配电网中,直流配电相比于交流配电更高的供电可靠性,提出了柔性直流配电可能的应用方向以及城市电网对柔性直流配电的需求,分析了城市电网直流配电系统的典型接入模式。在此基础上,建立了含电池储能和柔性直流的配电网经济调度模型,并以深圳区域配电网为例进行了仿真分析。研究结果表明,在配电网中安装一定容量的储能装置,通过峰谷时段充放电能降低配电网公司从上级电网的购电成本;采用柔性直流装置,通过换流器进行双向功率调节,可以实现有功功率和无功功率协调优化。
In view of the higher power supply reliability of DC power distribution than AC power distribution in urban power distribution network,the possible application direction of flexible DC power distribution and the demand for flexible DC power distribution of urban power grid are put forward,and the DC power distribution of urban power grid is analyzed.Typical access patterns for electrical systems.On this basis,the economic dispatch model of the distribution network with battery energy storage and flexible DC is established,and the simulation analysis is carried out by taking the Shenzhen regional distribution network as an example.The research results show that installing a certain capacity of energy storage device in the distribution network can reduce the cost of electricity purchase by the distribution network company from the upper-level power grid through charging and discharging during peak and valley periods.Active power and reactive power can be optimized in coordination.
作者
朱志芳
董红
陈丽萍
熊晓晟
许峰
Zhu Zhi-fang;Dong Hong;Chen Li-ping;Xiong Xiao-sheng;Xu Feng
出处
《电力系统装备》
2022年第5期149-151,共3页
Electric Power System Equipment
关键词
电池储能
柔性直流
经济调度
城市配电网
battery energy storage
DC power distribution
economic dispatch
urban distribution network
