【摘要】 大用户直购电是我国电力市场改革的必然趋势,将成为用户实施选择权的主要方式。根据大用户直购电交易的特点,提出一种考虑可中断负荷的大用户输电网过网费定价方法。该方法在综合考虑合同电量约束和中断负荷约束的前提下,建立了大用户中断阻塞管理模型。在此基础上,利用输电长期增量成本法(transmission long run incremental cost,T-LRIC)进行过网费定价。最后,以IEEE 30节点测试系统为例,验证了所提定价模型的正确性,并计算分析了不同交易量以及中断负荷对输电阻塞和过网费的影响。分析结果表明,通过合理配置合同电量及选择中断负荷,能够有效提高输电网的经济利用效率并改善线路阻塞延缓投资时间,过网费用也有所降低,为发电企业和大用户合理申报直购电量提供参考,有利于我国大用户直购电长期交易的开展。更多还原

【Abstract】 Direct electricity purchase by large consumers is the inevitable trend of electricity market reform in China,w hich w ill become the dominant form of the choice right of consumers. According to the characteristics of direct electricity purchase by large consumers,this paper proposes a new pricing method of transmission netw ork w heeling cost for large consumers w ith considering the interruptible. Taking into account the electric quantity constraint and interrupt load constraint,this method establishes the interrupt congestion management model of large consumers. On this basis,the transmission long run incremental cost( T-LRIC) method is used for w heeling cost pricing. Finally,taking the IEEE 30-bus test system as example,this paper verifies the correctness of the proposed model,calculates and analyzes the influences of trading pow er and interrupt load on the congestion management and w heeling cost. The analysis results show that this method can effectively improve the economic efficiency of the transmission netw ork and the congestion of transmission line,and delay its investment time,so the w heeling costs are low er than before,through the rational allocation of electricity contracts and the selection of interrupt load,w hich can provide guidance for pow er plants and large consumers reasonably purchasing pow er,and facilitate the development of our long-term deal of direct electricity purchase by large consumers in China.更多还原