Regional electric power capacity market model design and pricing method considering cross-region tie-line constraint

Abstract

The invention discloses a regional electric power capacity market model design and pricing method considering cross-region tie-line constraint. The method includes: determining the peak load level within a capacity market operation period according to a result of long-term load prediction of a power grid, and determining the capacity demand required by each region in the whole grid according to the reliability requirement of a system; dividing the system into regions to overcome the difficulty that the capacity cannot be called due to blocking of cross-region tie-lines in the capacity market, and establishing a capacity market optimization model which regards the minimum cost of the total capacity as the target and considers regional capacity demand balance; and solving the optimization model to obtain the optimal capacity purchase amount of each region and a multiplier corresponding to the capacity balance constraint of each region, wherein the multiplier represents the capacity price of each region. According to the method, the capacity price of each region, which considers the cross-region capacity constraint, can be given, price signals are provided for the capacity market, the investment of the power grid can be guided through the market, and certain references are provided for long-term planning work of the power grid.

Description

technical field [0001] The invention relates to the design and pricing method of a medium- and long-term capacity market model considering the constraints of cross-regional tie lines under the power market, and particularly relates to the establishment of a regional capacity market model and the formulation of capacity electricity prices in each region. Background technique [0002] The power industry is a basic industry for economic and social development. The fundamental starting point and goal of the construction of the power market is to strengthen the overall planning of power and ensure the safe, efficient and reliable operation of power. To achieve the above goals, it is objectively required to design a power market with a complete system and complete functions. , and establish a corresponding market-oriented trading mechanism. To strengthen overall power planning, power generation companies must be encouraged to increase capacity, maintain an appropriate capacity mar...

AI Technical Summary

Problems solved by technology

[0005] However, the existing capacity market only relies on the quotations of each unit, and settles completely according to economic efficiency, ignoring the constraints of cross-regional connection lines

In the actual system operation, since the quotations of units in some areas may be very low, this will cause all the units that win the bid to be concentrated in areas with lower capacity quotations, and it is difficult for units in other areas with high prices to win the bid

In reality, due to the existence of network constraints, the power cannot be transferred, resulting in the phenomenon of "north power"

At the same time, there are more bidding capacity units in low-price areas, which further encourages power generation companies to increase capacity investment, while other low-price areas have reduced interest in capacity investment, further leading to the intensification of "household power"

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