基于点费率的跨省区输电定价机制

合理的跨省区输电定价机制是实现跨省区电力交易公平竞争、资源在更大范围内优化配置的前提。针对中国跨省区输电定价机制存在的问题，从成本分摊和输电价格结构角度，提出一种基于“点费率”的跨省区输电定价方法。该方法通过电气源流分析计算各省级电网对跨省区联络线的使用程度，按照使用程度分摊跨省区输电成本，实现成本分摊的合理性。同时，从价格结构角度，通过设计合理的跨省区输电价格，使跨省区输电费不阻碍省间交易，有利于促进资源在区域范围内最优化。通过IEEE14节点算例验证了所提方法的有效性。

Trans-provincial Transmission Pricing Mechanism Based on Point Rate

Reasonable trans-provincial transmission pricing is the premise for achieving fair competition between trans-provincial electricity trading, and optimizing resources in a larger scope. Aiming at the problems of trans-provincial transmission pricing, a point rate based trans-provincial transmission pricing method is proposed from the perspective of cost allocation and transmission price structure. The method calculates the used degree of trans-provincial tie lines by each provincial power grid through analyzing the electrical source flow, and allocates the trans-provincial transmission costs according to the used degree, consequently realizing the rationality of cost sharing. At the same time, from the perspective of price structure, determining reasonable trans-provincial transmission prices will make the trans-provincial transmission costs not hinder the inter-provincial transactions, which is conducive to the optimization of resources in a large region. The validity of the proposed method is verified by an IEEE-14 node example.