市场环境下配电网投资成本定价模型

Real and Reactive Power Pricing for Distribution Networks

分布式电源在未来能源供应中将起到重要作用,其合理规划能够降低系统网损、延缓电网建设。现有配电网投资成本定价模型并未反映分布式电源影响。基于此,文中将已成功应用于英国输电网的基于直流潮流的投资定价(ICRP-DC)模型扩展至配电网中,结合配电网特点提出了适合于其投资成本定价的基于交流潮流的投资定价(ICRP-AC)模型,并考虑各节点注入/吸收有功功率及无功功率影响,与其他模型相比,该模型可提供相关经济信号指导分布式电源的合理建设。算例仿真结果验证了所述模型的有效性,并与ICRP-DC模型进行了对比分析。

Distributed generators （DGs） are expected to play an important role in the future power supply. The appropriate planning of DGs would potentially benefit network operators by reducing power loss and deferring or delaying the necessity for network upgrading and expansion. At present, the cost or benefit of DGs to the network operators is not properly reflected by the major distribution network charging model. The objective of this paper is to extend a well established economic pricing model, i.e., investment cost related pricing based on DC power flow （ICRP-DC） model, to distribution network. This model has been successfully used by the UK＇ s transmission networks. According to the characteristics of distribution network, the investment cost related pricing based on AC power flow （ICRP-AC） model is proposed. The proposed model is adapted to the distribution network investment pricing, and can consider the effects of injected/absorbed nodal active power and reactive power as well. Compared with other models, the proposed model can provide the relevant economic signals to appropriate locations of DGs. The simulation results validate the effectiveness of the presented model, and the comparison analysis with ICRP-DC model is carried out.