基于供给函数均衡模型的区域电力现货市场模拟分析SIMULATION OF AREAL SPOT MARKET BASED ON SUPPLY FUNCTION EQUILIBRIUM MODEL
张晓东,高波
摘要(Abstract):
在电力市场中,采用第一价格暗标拍卖机制的日前现货市场是一种主要的交易形式。为了研究现货市场中发电企业的竞标策略及其对市场结果的影响,作者建立了分析现货市场的供给函数均衡模型,其基本假设是发电企业具有通常为线性的边际成本并提交线性供给函数进行市场竞价。由于采用零截距边际成本和供给函数的假设可以简化分析,文中提出了线性供给函数模型和零截距线性供给函数模型之间的转化算法,即模型的正规化问题。利用该模型进行了算例分析,所考虑的影响市场结果的因素为需求、需求弹性,完全竞争企业的容量份额和策略竞标企业的规模,市场结果包括市场出清电价、消费者剩余和生产者剩余以及发电企业的利润。计算结果表明策略竞标企业的规模越大,抬升市场价格的能力和动机就越强。在大企业策略竞标的条件下,完全竞争企业会获得更大的超额利润。
关键词(KeyWords): 电力市场;均衡;竞标策略;供给函数;社会福利;电力系统
基金项目(Foundation):
作者(Author): 张晓东,高波
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参考文献(References):
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