基于非凸报价的高比例新能源现货市场机制  

Non-convex Bidding-based Spot Market Mechanism of High Penetration Renewable Energy

作　　者：孟繁林 钟海旺[1] 夏清[1] MENG Fanlin;ZHONG Haiwang;XIA Qing(Department of Electrical and Engineering,Tsinghua University,Haidian District,Beijing 100084,China)

机构地区：[1]清华大学电机工程与应用电子技术系,北京市海淀区100084

出　　处：《电网技术》2023年第1期120-128,共9页Power System Technology

基　　金：国家重点研发计划项目(2022YFB2403500);国家自然科学基金智能电网联合重点项目(U1966204)。

摘　　要：构建高比例新能源的新型电力系统指明了双碳背景下我国电力转型发展的方向。然而,由于新能源成本和出力特性与传统电源有显著差别,基于火电为主体的电力系统设计的现货市场机制不再适应新型电力系统的发展要求。为此,提出了新能源报价新机制,新能源每个时段申报一条先降后升的U型功率量价曲线,能够充分体现新能源边际成本为0、平均成本递减的成本特性和波动的出力特性,并相应提出了适应新型电力系统的现货市场和火电容量市场耦合机制。然而,这一报价模式将使得市场出清模型变为非凸函数,为此,提出了基于非凸报价的现货市场出清模型,引入一系列0-1变量,并通过不同报价段之间的耦合关系,将其转化为一个可求解的混合整数规划模型。算例验证了所提机制和模型的有效性。The construction of a new electric power system with new energy resources as the main body points out the direction of China’s power transformation and development under the dual-carbon target background. However, because the cost and output characteristics of new energy resources are significantly different from those of the traditional generators,the spot market mechanism of a power system designed for the thermal power is no longer suitable for the development requirements of the new electric power system. Therefore, this paper proposes a new mechanism for new energy bidding. The new energy submits a U-shaped curve that decreases first and then increases with the output in each period. It reflects the cost characteristics with zero marginal cost, decreasing average cost and fluctuating output of the new energy. Accordingly, the coupling mechanism of the thermal power spot market and the capacity market is proposed to adapt to the new power system.However, this bidding curve makes the clearing model non-convex. Therefore, a spot market clearing model based on the non-convex quotation is creatively proposed in this paper with a series of 0-1 variables introduced, which skillfully transforms it into a solvable mixed integer programming model through the coupling relationship between the different quotation segments. Case study verifies the effectiveness of the mechanism and model proposed in this paper.

关 键 词：非凸报价 新型电力系统 新能源 现货市场 

分 类 号：TM73[电气工程—电力系统及自动化]