两种输电定价机制下输电公司年收入波动风险分析  

Risk Analysis of Annual Income Fluctuation of Transmission Company under Two Transmission Pricing Mechanisms

作　　者：金小明 周保荣 王宏 董楠 吴鸿亮 文福拴[2,3] 

机构地区：[1]南方电网科学研究院,广州市510080 [2]浙江大学电气工程学院,杭州市310027 [3]文莱科技大学电机与电子工程系

出　　处：《电力建设》2016年第7期33-39,共7页Electric Power Construction

基　　金：国家重点基础研究发展计划项目(973项目)(2013CB228202);南方电网科学研究院科技项目(K-KY2012-015)~~

摘　　要：随着采用不同投资模式或融资方式的输电线路建设和投产,输电交易模式趋于复杂化。单一的电量输电定价机制无法适应不断发展的投资和市场运营环境以及输电投资回收的需要,两部制电价机制在原理上则更为适宜。在此背景下,对一部制电量输电定价和两部制输电定价进行了定量分析。首先简要介绍了一部制电量输电价格和两部制输电价格的特点及测算原理,然后对2种价格机制下输电公司的年收入及其波动情况进行了定量分析和比较,并给出了输电收入差值比、收入平均波动率等指标。然后,对两部制电价中输电公司年收入随容量费用分摊比例的变化情况进行了讨论。最后,对南方电网"西电东送"的实际案例进行了分析说明。研究结果表明,采用单一电量电价机制有利于在丰水年偏多时加快输电投资成本回收,而采用两部制电价机制则能够缓解未来枯水年偏多时收入不足的风险。With the construction and operation of new transmission lines under different investment or financing modes,transaction modes are becoming more and more complicated. The currently employed electricity quantity based single-part pricing mechanism cannot meet the requirement of the new investment and market environment,and is not consistent w ith the essential characteristics of transmission investment recovery. The tw o-part pricing mechanism is more appropriate for transmission pricing. Given this background,this paper quantitatively analyzes the one-part electricity quantity based pricing and tw o-part transmission pricing. Firstly, w e introduce the characteristics and calculating principles of the one-part electricity quantity based pricing and tw o-part transmission pricing. Then,w e carry out the quantitative comparison of annual income and its fluctuation for a given transmission company under tw o transmission pricing mechanisms,and present tw o indexes including the unbalance rate and the average fluctuation rate of transmission income. Further w e analyze the annual income changes of the transmission company concerned w ith respect to the capacity income rate in the tw o-part pricing mechanism. Finally,w e adopt an actual transmission line in China Southern Pow er Gird for demonstration. The research results show that the electricity quantity based single-part pricing mechanism can speed the investment cost recovery in the case w ith redundant rain in the planning years,w hile the tw o-part pricing mechanism is able to mitigate the insufficient income risk in the case w ith deficient rain in the planning years.

关 键 词：两部制输电价 输电公司 年收入 波动风险 

分 类 号：TM71[电气工程—电力系统及自动化] F426[经济管理—产业经济]