考虑智能软开关电压支撑的城市配电网弹性提升方法

Resilience Lifting Method of Urban Distribution Network Considering Soft Open Point Voltage Support

近年来台风、暴雨等极端天气对电力系统的安全造成巨大影响,电力系统的弹性成为人们关注的热点。配电系统弹性是系统应对极端事件的预防、抵御、响应及快速恢复供电的能力。提出了一种考虑智能软开关(soft open point,SOP)和分布式电源(distributed generation,DG)的配电系统弹性提升方法,在多阶段弹性提升过程中考虑了DG规划、主动孤岛运行、SOP快速故障隔离和供电恢复。首先建立了SOP数学控制模型和考虑SOP的配电网供电恢复模型;然后提出了多阶段弹性评估指标和方法,建立了含SOP的多阶段混合整数线性规划模型,并考虑了每个阶段的网络拓扑和操作约束;最后在IEEE 33标准算例上进行分析计算,验证了所提弹性提升方法的有效性。

In recent years,extreme weather events,such as typhoons and rainstorms,have greatly impacted the security of power systems,and the resilience of power systems has gradually become the focus of attention.The resilience of a distribution system is its ability to prevent,resist,respond to,and quickly restore power supply in response to extreme events.This paper proposes a method to improve the resilience of a distribution system by considering the soft open point(SOP)and distributed generation(DG).The DG planning,active islanding,SOP fast fault isolation,and power supply recovery capability are considered in the multi-stage power supply recovery process.First,an SOP mathematical control model and a distribution network fault recovery model considering the SOP are established.Second,a multi-stage resilience evaluation index and method are proposed,a multistage mixed integer linear programming model with SOP is established,and the network topology and operation constraints of each stage are considered.Finally,the effectiveness of the proposed resilient lifting method is verified using the IEEE 33 standard example.