基于智能软开关与市场机制的有源配电网阻塞管理方法

Congestion Management Method for Active Distribution Networks Based on Soft Open Point and Market Mechanism

随着高渗透率可再生能源和大规模灵活负荷的广泛接入,在市场环境下用户以实现自身利益最大化的电能生产或消费行为,将可能导致配电网潮流分布在时间及空间上的过度集中,从而出现阻塞问题。文中提出了一种基于智能软开关与市场机制的有源配电网阻塞管理方法。考虑市场环境下灵活负荷的响应特性,建立了基于智能软开关与电价机制的配电网阻塞管理模型,通过将直接控制手段与市场调节机制相结合来解决有源配电网的阻塞问题。采用PG&E 69节点算例对所提出的阻塞管理方法进行了分析与验证。结果表明,该方法可以有效解决配电网阻塞问题,且智能软开关对于缓解系统阻塞及降低阻塞费用有显著作用。

With the extensive access to high penetration of renewable energy sources and large-scale flexible load,in a market environment,the electric power production or consumption of consumers to maximize their own interests may lead to excessive concentration of power flow in time and space,resulting in the congestion problem in active distribution networks(ADNs).A congestion management method of ADN is proposed based on the soft open point(SOP)and market mechanism.Faced with the response characteristics of flexible load with locational marginal price,a congestion management model based on SOP and electricity price mechanism is proposed to solve the congestion problem by integrating the direct control methods with market methods.Case studies on the PG&E 69-node system are made to verify the effectiveness of the proposed congestion management method.It is shown that the method can effectively solve the congestion problem and SOP has appreciable effects in alleviating system congestion and reducing the congestion cost.