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Power capacity market partition clearing method, system and device and storage medium

A capacity and market technology, applied in market forecasting, market data collection, instruments, etc., to achieve the effect of ensuring adequacy

Pending Publication Date: 2021-09-03
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the fact that the current spot market clearing price is relatively low, conventional units, especially marginal units, cannot recover fixed costs, and considering that the capacity market is an effective mechanism for compensating unit fixed costs and guiding power investment and construction, the present invention provides a power capacity market partition Clearing method, system, equipment and storage medium. This method considers the constraints of the transmission capacity of the connection line between regions and the demand curve of variable capacity, and establishes a capacity market partition model. Each partition is settled according to its own capacity clearing price, so that each region The construction of power supply investment plays a certain guiding role

Method used

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  • Power capacity market partition clearing method, system and device and storage medium
  • Power capacity market partition clearing method, system and device and storage medium
  • Power capacity market partition clearing method, system and device and storage medium

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Embodiment approach

[0055] In view of the fact that the current spot market clearing price is relatively low, conventional units, especially marginal units, cannot recover fixed costs, and considering that the capacity market is an effective mechanism for compensating unit fixed costs and guiding power investment and construction, the present invention provides a method that considers network constraints and Capacity market partition model with variable demand curve.

[0056] Glossary:

[0057] Target Capacity: The total capacity expected in the capacity delivery year

[0058] Variable capacity demand curve: a three-segment broken line in which power generation capacity changes with capacity price changes

[0059] Total surplus: Similar to social welfare, it is equal to the difference between the surplus on the demand side and the surplus on the generation side.

[0060] Such as image 3 As shown, the method includes:

[0061] Obtain historical load data and calculate the target capacity of e...

Embodiment

[0099] The following uses a specific example for description. figure 1 It is a schematic diagram of the variable capacity demand curves of each partition used in the present invention; figure 2 It is a schematic diagram of the system in the embodiment of the present invention, L1 and L2 are two connection lines between areas 1 and 2 respectively.

[0100] The data needed to calculate the target capacity of each partition is shown in Table 1. Then the target capacity of regions 1 and 2 are both 400MW.

[0101] Table 1

[0102]

[0103] The data of stock units in each division is shown in Table 2. The parameters of tie lines L1 and L2 are shown in Table 3. Where a'=57.5%, c'=57.5%, then a x =200,c x =600.

[0104] Table 2

[0105]

[0106]

[0107] table 3

[0108] line number Positive direction Reactance / S Capacity transmission upper limit / MW L1 Area 1-2 0.002 20 L2 Area 1-2 0.002 30

[0109] Suppose the capacity prices co...

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Abstract

The invention provides an electric power capacity market partition clearing method, system and device and a storage medium, and the method comprises the following steps: obtaining historical load data, and calculating the target capacity of each partition of a capacity market; calculating a variable capacity demand curve of each subarea of the capacity market according to the target capacity of each subarea of the capacity market; establishing a capacity market partition model with the maximum total residual as a target based on variable capacity demand curve partition; solving the capacity market partition model to obtain the capacity standard quantity of each unit and the capacity clearing price of each partition; and each unit carrying out settlement according to the capacity clearing price of the area where the unit is located. According to the method, tie line transmission capacity constraints and variable capacity demand curves between regions are considered, a capacity market partition model is established, and each partition is settled according to respective capacity clearing price, so that a certain guiding effect is achieved on power supply investment construction of each region.

Description

technical field [0001] The invention relates to the field of electric power dispatching, in particular to a method, system, equipment and storage medium for clearing power capacity market partitions. Background technique [0002] In the trial settlement process of the spot market, with the increase in the proportion of high-proportion new energy, the power generation share of conventional units in the spot market has been squeezed out, and the utilization hours of power generation of conventional units have been greatly reduced. In order to ensure that the conventional units can be started, their quotations are often lower than the short-term marginal cost, resulting in low clearing prices in the spot market, resulting in the inability of conventional units, especially marginal units, to recover fixed costs, which is not conducive to guidance in the environment of large-scale decommissioning and replacement of units Power investment construction. [0003] However, the exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q30/02G06Q50/06
CPCG06Q30/0201G06Q30/0206G06Q50/06
Inventor 单茂华李宏杰曹媛媛张豪曹阳李晓嘉严春华谢毅陈广娟田伟
Owner CHINA ELECTRIC POWER RES INST