摘要
统一出清的定价机制是电力市场中发电商存在持留行为的根本原因。针对电力市场设计中应考虑供需弹性的积极作用,该文分析了拥有边际机组的单个发电商容量持留行为发生的条件及其影响因素,并提出了将持留前后的购电费用之比作为衡量系统持留严重程度的指标W,算例验证,证明供需弹性可以作为制约发电商利用容量持留哄抬电价、危及市场稳定性的有力工具之一。
The market mechanism of uniform clearing pricing is the prime cause of generator capacity withholding in power markets. Consideing the positive roles of supply and demand elasticity, this paper analyzed the withholding conditions and impact factors of single generator who holds marginal units, meanwhile, it proposed an index W for weighing the withholding level, which was defined as the ratio of purchasing fee before withholding to that after withholding, finally a case study was given to verify the efficiency of the proposed model. Results show that supply and demand elasticity can be used as a powerful tool to restrict the power supplier in forcing up electricity price and endangering the stability of power market by means of capacity withholding.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2008年第5期35-39,共5页
Proceedings of the CSU-EPSA
基金
教育部科学技术研究重点项目(107030)
北京市自然科学基金资助项目(9062008)
关键词
电力市场
统一出清价
持留
弹性
power market
marginal clearing price
withholding
elasticity
作者简介
李庚银（1964-），男，博士，教授，博士生导师，主要从事电能质量、电力市场、新型输配电技术等研究。Email：ligy@ncepu．edu．cn
杨建华（1982-），女，硕士研究生，主要从事电力市场研究。Email：yjh820410@126．com
周明（1967-），女，博士，教授，博士生导师，主要从事电力市场、电能质量、电网调度自动化等研究。Email：zhouming@ncepu．edu．cn
