Method for participating in power spot market clearing calculation by hydraulic power plant

A technology for market clearing and hydropower plants, applied in the field of electricity spot market, can solve the problem of increasing the difficulty of clearing calculation, and achieve the effect of promoting full utilization, avoiding water abandonment, and reducing complexity

Active Publication Date: 2020-10-02
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

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  • Method for participating in power spot market clearing calculation by hydraulic power plant
  • Method for participating in power spot market clearing calculation by hydraulic power plant
  • Method for participating in power spot market clearing calculation by hydraulic power plant

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Embodiment Construction

[0017] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

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

[0019] In step S110 , segmental linearization is performed on the water level storage capacity curve, the tail water level flow curve, and the head water consumption rate curve of the hydropower plant respectively. The nonlinear curve is converted into a piecewise linear curve, so that the mathematical model of clearing calculation does not introduce nonlinear problems.

[0020] The water level 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 relationship between the tail ...

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Abstract

The invention discloses a modeling method for participation of a hydraulic power plant in electric power spot market clearing calculation. A water level reservoir capacity curve, a water head water consumption rate curve and a tail water level flow curve of the hydraulic power plant are processed through a partwise linearization method. And further establishing a hydraulic power plant water levelflow constraint, a cascade hydraulic connection constraint, a vibration area constraint, a water abandoning electric quantity constraint and a water abandoning electric quantity penalty function, andadding the constraint conditions and the penalty function into the electric power spot market clearing model so as to form a complete mathematical model considering participation of the hydraulic power plant in electric power spot market clearing calculation. According to the invention, the clearing calculation result of the electric power spot market can fully consider the influence caused by various constraint conditions of water and electricity; and meanwhile, the complexity of a spot market mathematical model caused by hydroelectric constraints is also reduced to a certain extent, so thatthe model solving speed is controlled within an engineering practical allowable range, and the method has engineering practical value.

Description

technical field [0001] The invention relates to the technical field of electric power spot market, in particular to a method for hydropower plants to participate in the clearing calculation of the electric power spot market. Background technique [0002] In the electricity spot market, the power generation companies participating in the market report power generation before the trading day, and the electricity sales companies and wholesale users participating in the market report electricity consumption. Various constraints such as bus load forecasting, tie-line planning, maintenance planning, etc., with the goal of maximizing social benefits, use the safety-constrained unit combination (SCUC) and safety-constrained economic dispatch (SCED) algorithms to calculate the clearing of the power spot market, and get Combination of start and stop, winning bid output curve and node electricity price. [0003] The participation of thermal power units in the power spot market has a m...

Claims

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Application Information

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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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