Day-ahead market clearing method and system giving consideration to economy and fairness

Abstract

The invention relates to a day-ahead market clearing method and system giving consideration to economy and fairness, and belongs to the technical field of power system dispatch, and the method comprises the steps: obtaining external data needed by market clearing processing; taking electric energy market transaction requirements into consideration, taking the lowest electricity purchasing cost as an optimization target, and meanwhile, constructing constraint conditions based on the external data, the constraint conditions including a power grid operation constraint, a standby fairness constraint and a power supply operation characteristic constraint; and according to the optimization target and the constraint condition, constructing a power market transaction clearing model considering standby fairness, and solving the power market transaction clearing model to obtain a clearing result. According to the technical scheme of the invention, by considering the standby fairness factor in the construction and processing process of the electricity market transaction clearing model, the obtained scheduling decision result gives consideration to economy and fairness, and the technical scheme can powerfully provide technical support for market deepening and reform.

Description

technical field [0001] The application belongs to the technical field of electric power system dispatching, and specifically relates to a day-ahead market clearing method and system that take into account both economy and fairness. Background technique [0002] At present, my country is in the stage of deepening the reform of the electricity market, and the pilot construction of the electricity spot market is gradually accelerating, and auxiliary service markets such as peak regulation and frequency regulation have been successfully implemented in some provinces and regions. However, due to differences in the progress of market construction in different provinces and regions, the construction of the electric energy market and the auxiliary service market are not completely synchronized, which leads to the problem of market mechanism design under the incomplete market model. [0003] The so-called incomplete market model means that some of the power generation resources with ...

AI Technical Summary

Problems solved by technology

[0006] (1) The adequacy of system backup cannot be guaranteed, and the potential security risk of insufficient backup

As the priority is to carry out bidding and clearing in the electric energy market, the remaining power generation capacity of the generator set is used to arrange backup auxiliary services, and the adequacy of the remaining power generation capacity cannot be guaranteed

If there is an overall tight power supply capacity, there may be insufficient backup, which may affect the risk of system operation;

[0007] (2) It cannot guarantee the fairness of the backup auxiliary service planning, and there is a problem affecting the "three public dispatching" of the power system

Due to the mutually exclusive characteristics between the electric energy of the generating set and the backup auxiliary service, if the remaining power generation capacity is unevenly distributed among the power generation enterprises after the completion of the electric energy market economy, it cannot be guaranteed that the backup auxiliary service will be arranged according to the principle of "three public dispatching";

[0008] (3) The production cost of power generation enterprises cannot be fully quantified, which is not conducive to the deepening reform of the subsequent market

For power generation companies, there are certain production and operation costs for both electric energy and backup auxiliary services. Since the backup auxiliary services have not yet established a market transaction mechanism under the incomplete market model, the corresponding production and operation costs are difficult to quantify, and there is a risk of distorting the price declaration of market members. At the same time, it is inconsistent with the direction of market deepening reform

Images