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Day-ahead market clearing method for multi-owner cascade power station drainage basin electric quantity transfer

A cascade power station and power transfer technology, applied in market forecasting, instrumentation, finance, etc., can solve the problems of ignoring the initiative of downstream power stations and failing to improve the competitiveness of the watershed, and achieves the goal of being beneficial to comprehensive configuration, ensuring the balance of market transactions, and achieving maximum effect of chemical utilization

Active Publication Date: 2020-02-11
SICHUAN UNIV
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AI Technical Summary

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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  • Day-ahead market clearing method for multi-owner cascade power station drainage basin electric quantity transfer
  • Day-ahead market clearing method for multi-owner cascade power station drainage basin electric quantity transfer
  • Day-ahead market clearing method for multi-owner cascade power station drainage basin electric quantity transfer

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Embodiment

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

[0045] Specifically include the following ste...

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Abstract

The invention discloses a day-ahead market clearing method for electric quantity transfer of a multi-owner cascade power station watershed, and the method comprises the steps: (S1), starting a day-ahead market of electric power spot goods, and obtaining market related information issued by an electric power dispatching institution; (S2) performing optimization calculation on upstream and downstream power stations of the cascade hydropower station by adopting a safety constraint unit combination SCUC only considering power constraints to obtain clearness; and (S3) verifying the clear information of the SCUC optimization calculation by adopting a hydraulic verification model, determining the cascade hydropower output time period meeting the water constraint; if so, continuing to calculate clear according to SCED optimization only considering the power constraint; and (S4) for the cascade hydropower output time period which does not meet the water constraint, by the adoption of the scheme, achieving the purposes that benefit distribution of different owners on the upstream and the downstream of the cascade hydropower station, and market transaction balance is guaranteed are achieved,and high practical value and popularization value are achieved.

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 electricity transfer in multi-proprietor cascade power stations. Background technique [0002] At present, China's electricity trading is beginning to move towards spot electricity trading with a shorter time period. The steady advancement of the spot electricity market will surely make cascade hydropower compete with other types of power stations. The upstream power station can flexibly participate in the spot market thanks to its excellent storage and regulation capacity, while the downstream power station with poor regulation ability is difficult to independently participate in the market because its power generation depends on the generation flow of the upstream power station. In most regions of my country, the cascade hydropower upstream and downstream power stations are owned by different owners, and it is diff...

Claims

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Application Information

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Patent Type & Authority Applications(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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