高比例可再生能源电力系统中电量约束型机组参与现货市场的机制  

Spot Market Mechanism for Energy Constrained Generation Units in High Proportion Renewable Energy Power System

作　　者：孟繁林 钟海旺[1] 夏清[1] MENG Fanlin;ZHONG Haiwang;XIA Qing(Department of Electrical 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3期1047-1055,共9页Power System Technology

基　　金：国家自然科学基金智能电网联合重点项目(U1966204)。

摘　　要：新型电力系统迫切需要发展各种灵活性调节资源,必须要为灵活性调节资源设计合理的市场机制。但储能、调节式水电站等电量约束型机组的成本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适应电量约束型机组的特点。为此,分析了电量约束型机组的特性差异,发现其稀缺资源由电力转为电量,其成本与电量而非出力水平相关,进而论证了针对电量约束型机组特点、构建全新报价机制的必要性。在此基础上,提出了电量约束型机组在现货市场的报价机制,由申报功率量价曲线变为申报电量量价曲线,设计了考虑电量约束型机组的新型电力系统现货市场出清模型。为了激励储能参与现货市场,还提出了与现货市场相耦合的储能容量机制。算例验证了所提机制和模型的有效性。It is necessary to design a reasonable market mechanism for the flexible resources which are urgently needed in the new power system. However, the cost characteristics of the energy constrained units, such as the energy storage or the reservoir hydropower stations, are significantly different from those of the traditional power sources. The spot market mechanism designed for the power system based on thermal power units is not suitable for the characteristics of the energy constrained units. Therefore, the characteristic differences of the energy constrained units are analyzed in this paper. It is found that when the scarce resources of the energy constrained units are changed from energy into power the cost is embodied in the form of energy rather than in the power. The necessity of building a new bidding mechanism for the characteristics of energy constrained units is demonstrated. On this basis, the bidding mechanism of the energy constrained units in the spot market is put forward, that is, changing from the power-based volume price curve to the energy-based volume price curve, a new clearing model of the spot market considering the energy constrained units is designed. In order to encourage energy storage to participate in the spot market, an energy storage capacity mechanism coupled with the spot market is also proposed in this paper. A numerical example verifies the effectiveness of the proposed mechanism and model.

关 键 词：电量约束型机组 调节式水电站 储能 容量机制 

分 类 号：TM73[电气工程—电力系统及自动化]