双边交易模式下的网损分摊 毕业论文.docVIP

摘要 随着电力市场改革的推进，输电系统最终会成为一个独立实体参与市场交易。输电费用计算的一个重要组成部分就是网损费用的分摊，如何科学、公平、合理地确定网损分摊方案，将对市场中交易各方的交易热情和利益产生重大影响，网损分摊成为了电力市场中急需解决的关键问题之一。 本文首先介绍了几种常见的网损计算方法，分析了电力市场下网损计算的发展趋势；然后重点对边际网损系数分摊方法进行了研究。 边际网损系数法是当前各国电力市场应用较多的一种方法。这种方法能提供很好的经济信号，但是利用它计算出来的网损分摊量之和比系统实际总网损要大，并且不分摊给平衡节点，本文利用了比例调整法来解决这个问题。算例结果表明，改进后的方法能很好地消除网络中其它发电机对平衡节点发电机的补贴现象。 【关键词】电力市场；网损分摊；边际网损系数；双边交易 Abstract With the development of global innovation in electric power market,Transmission system will ultimately be an independent part of the market transaction.Transmission loss cost allocation is an important constitution of transmission tatiff,different loss allocation method will affect economic benefit and trade enthusiasm of each market member,so loss allocation problem is desired to settle in electric power market. In this paper,it firstly introduced several familiar loss calculation methods and pointed out the tide of loss calculation in electric market.then spent lots time and energy in researching on marginal loss coefficient method. Marglnal loss coefficient method is applied in several electric power market at persent.This method has a good economical singal,but the total loss of the system is not equal to actual loss via this method,so the paper used the scaling method to regulate the total loss.Marginal loss coefficient method is not allocate loss to generators on the balance bus,an improved method was given in order to slove this problem,the results of calculation example shows that the improved method can avoid the generators in the network pay for the generator on the balance bus. 【Key words】Electrie Power Market ;Loss Allocation;Marginal Loss Coefficient;Bilateral trade 目录 1 引言 1 1.1选题背景 1 1.2 选题的依据和意义 1 1.3国内外研究现状 2 1.4本文的主要工作 3 2 电力市场环境下的网损问题 4 2.1电力市场模式与网损分摊 4 2.1.1电力市场发展趋势 4 2.1.2联营体模式(Pool模式) 4 2.1.3双边交易模式(Bilateral Trade Model) 5 2.1.4混合模式(P+B模式) 5 2.2电力市场中的输电服务 5 2.2.1输电服务的定义及分类 6 2.2.2输电服务费用的构成 6 2.3网损计算的方法 6 2.3.1第一类网损计算公式 7 2.3.2第二类网损计算公式 7 2.3.3网损计算的发展趋势 7 2.4典型网损分摊方法 8 2.4.1平均网损分摊法 8