电力中长期交易中的合同电量偏差考核机制

在电力现货市场建立之前,中国的电力中长期市场仍为纯电量交易,合理设计合同电量的偏差处理与结算方式有利于电力中长期交易向现货市场的平稳过渡。在此背景下,研究电力中长期交易合同电量的偏差考核机制。针对电力中长期交易基本规则中的典型偏差考核机制进行分析,提出适用于当前市场环境的发电侧偏差处理方法;从全电量交易和合同执行能力2个方面分析市场主体的偏差电量考核风险,在此基础上设计面向用户非全电量交易的固定比例全电量偏差电量结算方式,并进一步提出分阶段的用户侧偏差考核机制。采用以国内某省偏差考核实际数据为基础所构建的算例,验证所提出的偏差考核机制在中长期电力市场中的有效性。

An assessment mechanism for contract energy deviation in a medium-and long-term electricity market

Before the spot electricity market is esta blished,electrical energy is traded through forward contracts in the current medium and long term electricity market in China.A reasona ble balancing and settlement mechanism for elec-trical energy deviation is conducive to the smooth transition from the medium-and long term electricity market to the spot market,Given this background,an assessment mechanism is presented for contract energy deviation in a medi-um-and long term electricity market.First,the deviation settlement mechanism of the basic rules for the medium-and long-term electricity market is examined,and a generation-side deviation balancing mechanism suitable for the current electricity market environment proposed.Then,considering the differences of the market oriented electricity propor-tion and the differences in the capabilities of various users in controlling contract deviations,the risk of the electrical energy deviation penalty imposed on demand customers is analyzed.A fixed-ratid energy deviation settlement method is next designed for non total eletrical energy transaction,and a staged assessment mechanistm of demand-side energy deviation proposed.Simulations based on actual deviation assstment data from a provincial eletrieity market in China show that the proposed energy deviation assessment mechanism is e fective in the medium and long-term electricity market.