Clearing method, system and apparatus for power spot market, and storage medium

Abstract

The invention discloses a clearing method, system and apparatus for the power spot market. The method comprises firstly establishing a DC power flow constraint model; calculating the power output planparameter of a power generating set according to the DC power flow constraint model to obtain the preliminary result of the power spot market clearing optimization; obtaining the power flow values ofrespective branches by performing AC safety check calculation on the power output plan parameter; and correcting the DC power flow constraint model according to respective power flow values. The solution accuracy is improved based on the DC power flow constraint model. Performing AC safety check calculation on the power output plan parameter obtained by DC power flow constraint calculation is quicker than directly using AC power flow constraint calculation. Therefore, the method provided by the present invention takes account of solution accuracy and calculation speed, and more satisfies thepower spot market clearing optimization required by the actual engineering application than the prior art. The invention also discloses a clearing system and apparatus for the power spot market and acomputer readable storage medium, which have the above beneficial effects.

Description

Technical field [0001] The present invention relates to the technical field of power dispatching, in particular to a method, system, equipment and computer readable storage medium for clearing the power spot market. Background technique [0002] The power spot market is an important link in the power market system, which plays a fundamental role in supporting the orderly operation of the power market, and is also the key to the coordination of market transactions and system security. The time range of the power spot market includes the day before the real-time operation of the system to the real-time operation. The electricity spot market adopts a centralized bidding and unified clearing transaction method, which is conducive to promoting full competition in the market and giving full play to the price formation function of the market mechanism. The clearing of the power spot market needs to be supported by optimized scheduling software that considers safety constraints to optim...

AI Technical Summary

Problems solved by technology

However, the DC power flow constraint model only considers the active power factor, and cannot consider the network loss and node voltage, and the calculated power flow results have errors

Directly using DC power flow constraints in the market clearing optimization algorithm, on the one hand, the power flow results are difficult to accurately reflect the security of the power grid, resulting in the risk of grid overload operation in the market clearing results; on the other hand, both power grid security analysis and power generation plan optimization There are often large errors in the trend results between them, which leads to the ineffective convergence of the decomposed iterative algorithm for market clearing

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