Renewable energy transaction fee calculation method based on node electricity price mechanism

Abstract

The invention discloses a renewable energy transaction fee calculation method based on a node electricity price mechanism. The renewable energy output is introduced into an optimal direct-current power flow model in different stages, and an optimal direct-current power flow calculation model based on the node electricity price mechanism is established. The optimal direct-current power flow with the current renewable energy prediction output and the renewable energy real-time output deviation is calculated and considered, and the actual transaction cost of the renewable energy source is obtained. The influence of renewable energy output prediction errors are taken into consideration in the result, and an optimization scheme can be provided for adjusting the operation mode of the power gridunder high renewable energy source permeability. The method is especially suitable for calculation of electric power transaction cost in the coexistence of large-scale and multi-type renewable energysources.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to a calculation method for renewable energy transaction costs based on a node electricity price mechanism. Background technique [0002] With the increasing development of renewable energy in China, the penetration rate of renewable energy power generation in the power system continues to increase, and its adverse impact on the operation of the power system is becoming more and more serious. The impact is not only reflected in the impact on the security and reliability of the power grid, but also in the power market. In the electricity market with the participation of renewable energy, how to settle the transaction costs of renewable energy output with uncertain characteristics has become one of the important problems to be solved urgently. [0003] my country's current renewable energy transaction cost calculation method usually uses a fixed renewable energy benchmark ele...

AI Technical Summary

Problems solved by technology

There are some defects in the existing method. It does not consider the impact of renewable energy generators on the operation security of the power system. All renewable energy output is settled according to a unified fixed price, and it is difficult to guide renewable energy generators to improve their output prediction accuracy. and improve output quality

In fact, since the operation of the power system itself is limited by technical constraints such as transmission capacity and peak-shaving capacity, when large-scale renewable energy participates in transactions, if the prediction accuracy of renewable energy output is low, the actual output of renewable energy will deviate greatly , which often leads to the violation of the above-mentioned technical constraints, which has a serious impact on the safe and stable operation of the power system

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