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A day-ahead market-clearing method for power transfer in multi-owner cascade hydropower stations

A cascade power station and power transfer technology, applied in market forecasting, data processing applications, finance, etc., can solve the problems of ignoring the initiative of downstream power stations and failing to improve the competitiveness of the basin, ensuring the balance of market transactions, simplifying the clearing model and Algorithms to maximize the effect of utilization

Active Publication Date: 2022-06-07
SICHUAN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0010] The above two ways of realizing cascade hydropower joint participation in the market through model optimization, most of the revenue of the downstream power station is determined by the upstream power station, ignoring the initiative of the downstream power station to participate in the market, and cannot improve the competitiveness of the river basin

Method used

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  • A day-ahead market-clearing method for power transfer in multi-owner cascade hydropower stations
  • A day-ahead market-clearing method for power transfer in multi-owner cascade hydropower stations
  • A day-ahead market-clearing method for power transfer in multi-owner cascade hydropower stations

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Embodiment

[0044] like Figure 1 to Figure 7As shown, a day-ahead market clearing method for power transfer in a multi-owner cascade power station basin uses SCUC optimization calculation that only considers the power constraints to obtain the output plans of power generators in each period of the operation day, and then combines the hydraulic verification model with the water and electricity constraints. The considered SCED model adjusts the power transfer between the basins for the output plan of a certain period that does not meet the hydraulic relationship between the upstream and downstream of the cascade hydropower, and obtains a new clearing result, as well as the output plan of all units and the node marginal price (LMP) on the operating day. Constraint relaxation priorities will be established to expand the computationally feasible region of clearing optimization. The specific implementation steps of this method are as follows: figure 2 shown.

[0045] Specifically include th...

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Abstract

The invention discloses a day-ahead market clearing method for power transfer in multi-owner cascade power stations. The method includes (S1) after the power spot day-ahead market starts, according to market-related information issued by a power dispatching agency; , the downstream power station adopts the SCUC optimization calculation of the safety-constrained unit combination that only considers the power constraint; (S3) uses the hydraulic verification model to verify the information of the SCUC optimization calculation, and for the cascade hydropower output period that meets the water constraint, then Continue to calculate the results according to the SCED optimization calculation that only considers the power constraints, (S4) for the cascade hydropower output periods that do not meet the water constraints, adopt the SCED optimization calculations that consider both the hydraulic constraints and the power constraints. Through the above scheme, the present invention achieves In order to be able to deal with the profit distribution of different owners in the upstream and downstream of cascade hydropower, and to ensure the balance of market transactions, it has high practical value and promotion value.

Description

technical field [0001] The invention belongs to the technical field of electricity clearing, and in particular relates to a day-ahead market clearing method for power transfer in a multi-owner cascade power station basin. Background technique [0002] At present, China's power trading is beginning to move towards power spot trading with a shorter time period, and the steady advancement of the power spot market will surely make cascade hydropower compete with other types of power stations on the same stage. Upstream power plants can flexibly participate in the spot market thanks to their excellent storage and regulation capabilities, while downstream power plants with poor regulation capabilities are unable to participate in the market independently because their power generation depends on the flow of upstream power plants. In most areas of my country, the upstream and downstream hydropower stations of cascade hydropower are owned by different owners, and it is difficult to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q30/02G06Q40/04G06Q50/06
CPCG06Q30/0206G06Q40/04G06Q50/06Y04S10/50
Inventor 刘继春彭钰祥
Owner SICHUAN UNIV
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