基于奖励券机制的输电阻塞管理方法

Transmission Congestion Management Method Based on Coupon Incentive Mechanism

鉴于对提高资产利用效率的要求,有效的输电阻塞管理在智能电网中的重要性日益凸显。在节点边际电价和日前与实时"两级市场、两步结算"的市场背景下,提出应将输电阻塞盈余用于缓解线路阻塞,并结合阻塞线路影子价格和用户需求价格弹性系数的特性,引入节点边际价格-再调度费用影响因子,作为衡量节点价格变化对系统再调度成本影响的依据。在此基础上,提出了以日前阻塞盈余作为资金来源,激励用户主动响应、缓解实时网络阻塞状况的奖励券机制,形成了阻塞管理新的有效方法。扩展的IEEE 30节点算例表明了所提机制与方法的有效性。

In view of the demand on improving the efficiency of asset utilization, the effective transmission congestion management in smart grid becomes much more important. Under the market mechanism integrated with locational marginal price （LMP） and the background of two-level market with two-settlement in day-ahead and real-time market, it is proposed that the transmission congestion surplus should be used to mitigate the congestion of transmission lines; and combining with the characteristics of the shadow price of congested lines and demand side price elasticity coefficient, it is proposed to lead in the LMP-redispatch cost factors （L-R Factors） as the foundation of measuring the impact of LMP variation on redispatch cost of power grid. On this basis, a coupon mechanism, in which the day-ahead congestion surplus is taken as the source of funds to motivate more demand response （DR） on shifting loads between different periods and then alleviate the congestion in real-time markets, is put forward, and an effective approach for congestion management is formed. Case study based on extended IEEE 30-bus system show that both the proposed mechanism and method are effective.