基于等利润率变化率的大用户直接交易合同电价模型  

Electricity Price Model of Direct Transaction Contract for Large Power Consumers Based on Equivalent Change Rate of Profit Margin

作　　者：王雁凌[1] 刘诗宁[2] 

机构地区：[1]华北电力大学电气与电子工程学院,北京市昌平区102206 [2]昆明供电局,云南省昆明市650011

出　　处：《电网技术》2013年第8期2322-2327,共6页Power System Technology

摘　　要：目前,我国现有大用户直接交易合同中的固定交易电价需要交易双方,尤其是签订较长期直接交易合同的交易双方,具有较强的价格风险承受能力,这在一定程度上阻碍了大用户与发电企业参与直接交易的积极性。充分考虑了煤价浮动和产品价格波动等因素对交易双方利润的影响,打破传统直接交易合同中固定电价的约束,基于敏感性分析理论,提出了交易双方等利润率变化率的概念,并在此基础上建立了大用户直接交易合同电价模型,合同中交易执行电价在合同签订电价基础上根据交易双方的利润率变化率进行调整,交易双方共同规避风险,在一定程度上促进了交易双方的积极性,完善了大用户直接交易电价理论。通过算例验证了基于等利润率变化率建立的大用户直接交易合同电价模型的正确性和有效性,表明该模型能降低交易双方的价格风险。At present,the fixed electricity tariffs in existing direct transaction contracts for large power consumers needs both sides of the transaction,especially the both sides who sign a direct transaction contract for a longer-term,possessing stronger price risk tolerance,and to a certain extent it impairs the enthusiasm of large power consumers and power generation enterprises to participate in direct transaction.Fully taking the impact of fluctuations of coal price and product prices on profits of both sides of the transaction into account and breaking the constraint of fixed electricity tariffs in direct transaction contract for traditional direct transaction,based on sensitivity analysis a concept of equivalent change rate of profit margin is put forward and on this basis an electricity price model of direct transaction contract for large consumers is established.In this model,based on the signed price the executive price is adjusted according to change rates of the profit margins of both sides of the transaction,so both sides of the transaction can evade the risk together and the enthusiasm of them to participate in direct transaction can be promoted a certain extent,thus the theory of the direct transaction for large consumers is perfected.The correctness and effectiveness of the proposed electricity price model of direct transaction contract for large power consumers are verified by numerical example and calculation results show that using the established model the price risk of both sides of the transaction can be reduced.

关 键 词：电力市场 等利润率变化率 敏感因素分析 大用户直接交易 风险 

分 类 号：TM71[电气工程—电力系统及自动化]