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输电定价是建立统一规范的电力市场的关键之一．本文在指出现有各种输电定价方法的问题之后，着重讨论了发展中国家在电力市场环境下输电定价的三个特点和要求，进而指出了对于一个初级的电力市场，边际成本方法原则上适用于发展中国家的输电定价，但是纯粹的边际成本方法要加以改造．针对这三个特点和要求，作者发展了一种网嵌入的边际成本输电定价（ＧｒｉｄＥｍｂｅｄｄｅｄＭａｒｇｉｎａｌ－ＣｏｓｔＰｒｉｃｉｎｇ：ＧＥＭＰ）方法．在介绍了它的数学模型之后，给出了一个数字算例，结果显示它满足上述三个特点和要求，并能为电网的联营体运作提供充分的信息，从而适用于发展中国家的输电定价，有利于引导十分有限的输电资源的充分利用，有利于多年偿债资金（ＳｕｎｋＣｏｓｔ）的归还和发展资金的筹集，以及有利于输电市场信息的提取与发布等．
Transmission pricing is one of the keys to establish a unified and regulated electricity market. After pointing out the problems of various current transmission pricing methods, this paper focuses on the three characteristics and requirements of transmission pricing in developing countries under the power market environment, and then points out that for a primary power market, the marginal cost method is applicable in principle. Transmission pricing in developing countries, but the pure marginal cost method needs to be reformed. For these three characteristics and requirements, the author developed a network-embedded marginal cost-transfer pricing (GEMP) method. After introducing its mathematical model, a numerical example is given. The results show that it satisfies the above three characteristics and requirements, and can provide sufficient information for the operation of the grid’s coalition to be suitable for transmission pricing in developing countries. It is conducive to guiding the full utilization of very limited transmission resources, which is conducive to the repayment of many years’ repayment of debt funds (SunkCost) and the raising of development funds, as well as to the extraction and release of transmission market information.