【摘要】 输电网阻塞本质上是反映线路传输容量之不足。基于传统的短期边际成本方法所给出的阻塞电价信号不足以反映输电线路容量之不足。针对这一问题,文章在输电当量电价模型的基础上,引入“支付意愿”概念,建立了阻塞管理模型。该模型能在利用电价调控阻塞无能为力的情况下合理地削减负荷,同时又承袭了输电当量电价充分回报容量投资,充分而又合理地积累电网扩建资金的特性,从而比较好地解决了阻塞管理问题。此外,还允许用户参与阻塞管理,还增进了市场效率和公正性。算例结果表明,该方法能有效地解决输电网的阻塞问题。更多还原

【Abstract】 The emergence of line congestions essentially reflects the shortage of transmission capacity, but the shortage of transmission capacity cannot be sufficiently reflected by the congestion rents derived from the traditional short-run marginal cost pricing method. To solve this problem, this paper presents a congestion management (CM) method based the transmission electricity value equivalent (TEVE) pricing method. By introducing the willingness-to-pays of the network customers, the new CM method gives a rational way for load curtailment (i.e., a direct CM method), and shall be used when generation redispatch induced by the price signals (i.e. the indirect CM method) cannot thoroughly relieve the line overloads. For the sake that the TEVE pricing has the features of adequately returning the network investments and reasonably gathering more funds for network expansion, the new CM method can solve the congestion problem more constitutionally. Besides, the allowance of customers’ participation in CM also enhances market efficiency and equity. The results of the numerical example show that the new method can fairly well solve the CM problem.更多还原