A method for hydropower plants to participate in the clearing calculation of electricity spot market

A technology of market clearing and hydropower plants, applied in the field of electric power spot market, can solve the problems of increased difficulty of clearing calculations, and achieve the effects of promoting full utilization, avoiding water abandonment, and reducing complexity

Active Publication Date: 2022-07-22
NR ELECTRIC CO LTD +1
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Problems solved by technology

On the other hand, the participation of hydropower in the electricity spot market will bring huge challenges to clear calculations. Several characteristic curves of hydropower plants are nonlinear, and there are cascade coupling relationships between hydropower plants. In addition, the inherent vibration range of hydropower units problems, which greatly increase the difficulty of clearing calculations

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  • A method for hydropower plants to participate in the clearing calculation of electricity spot market
  • A method for hydropower plants to participate in the clearing calculation of electricity spot market
  • A method for hydropower plants to participate in the clearing calculation of electricity spot market

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Embodiment Construction

[0017] The technical solutions of the present invention will be further described below with reference to the accompanying drawings.

[0018] figure 1 It is a schematic flowchart of the present invention in one embodiment, such as figure 1 As shown, the aggregation resource modeling method in the embodiment of the present invention includes the following steps:

[0019] Step S110 , perform piecewise linearization processing on the water level storage capacity curve, the tail water level flow curve and the water head water consumption rate curve of the hydroelectric power plant respectively. The nonlinear curve is transformed into a piecewise linear curve, so that the mathematical model of clearing calculation does not introduce nonlinear problems.

[0020] The water level and storage capacity curve of the hydropower plant shows the corresponding relationship between the storage capacity v and the water level z, the tail water level flow curve shows the corresponding relation...

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Abstract

The invention discloses a modeling method for a hydropower plant to participate in the clearing calculation of the electricity spot market. Further establish the water level and flow constraints, cascade hydraulic connection constraints, vibration area constraints, abandoned water power constraints and abandoned water power penalty functions of hydropower plants, and add the above constraints and penalty functions to the power spot market clearing model, thus forming a consideration of water A complete mathematical model for the power plant to participate in the clearing calculation of the electricity spot market. The invention not only enables the clearing calculation result of the electricity spot market to fully consider the influence of various constraints of hydropower and ensures that the clearing result can be executed smoothly, but also reduces the impact of hydropower constraints on the mathematical model of the spot market to a certain extent. Complexity, so that the speed of model solving is controlled within the allowable range of engineering practicality, which has engineering practical value.

Description

technical field [0001] The invention relates to the technical field of electricity spot market, in particular to a method for a hydropower plant to participate in the clearing calculation of the electricity spot market. Background technique [0002] In the power spot market, the power generation companies participating in the market make power generation declarations before the trading day, and the power sales companies and wholesale users participating in the market make power consumption declarations. Various constraints such as bus load forecast, tie line plan, maintenance plan, etc., with the goal of maximizing social benefits, using the Safety Constrained Unit Combination (SCUC) and Safety Constrained Economic Dispatching (SCED) algorithms to calculate the clearing of the electricity spot market, we get Start-stop combination, bid-winning output curve and node electricity price. [0003] The participation of thermal power units in the electricity spot market has a matu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06Q50/06G06F111/04
CPCG06F30/20G06Q50/06G06F2111/04
Inventor 蒲桂林陈根军张高峰陈凯文沛施雄华邹大云
Owner NR ELECTRIC CO LTD
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