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Wind power dispatching method and system

A technology of power dispatching and wind power, applied in the direction of system integration technology, information technology support system, instrument, etc.

Pending Publication Date: 2021-02-02
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of the carbon trading mechanism has increased the grid-connected consumption of wind power, but the volatility and uncertainty of wind power have brought more serious problems to scheduling decisions

Method used

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  • Wind power dispatching method and system
  • Wind power dispatching method and system
  • Wind power dispatching method and system

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Experimental program
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Effect test

Embodiment 1

[0074] figure 1 The flow chart of the wind power dispatching method provided by the embodiment of the present invention, such as figure 1 As shown, the methods include:

[0075] Step 101: Obtain power equation balance constraints and spinning reserve inequality balance constraints of wind power forecast errors and load forecast errors. where the power equation balance constraint is:

[0076]

[0077] Among them, P f.Lt is the load forecast value at time t; ε Lt is the load forecast error at time t; P f.wt is the wind power forecast value at time t; ε wt is the wind power prediction error at time t; ΔP wt is the amount of abandoned wind power in the scheduling plan at time t; M is the number of thermal power units, P it is the output of thermal power unit i at time t; P h,jt is the electric power of CHP unit j reduced to the pure condensing condition at time t, and N is the number of CHP units.

[0078] The inequality balance constraint for switching is:

[0079] ...

Embodiment 2

[0179] This embodiment provides a wind power dispatching system, including:

[0180] The constraint obtaining module is used to obtain the power equation balance constraint and the spinning reserve inequality balance constraint of wind power forecast error and load forecast error.

[0181] A confidence level obtaining module, configured to obtain a confidence level when the balance constraint of the power equation and the balance constraint of the spinning reserve inequality are relaxed to balance the power constraint.

[0182] The first model building module is used to establish a scheduling model considering fuzzy opportunity constraints according to the total operating cost, CHP unit power generation cost, conventional thermal power unit power generation cost, wind power operation and maintenance cost, and carbon emission cost, which is denoted as the first model.

[0183] The second model building module is used to build a single-objective chance programming model incorpor...

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Abstract

The invention relates to a wind power dispatching method and system. The method comprises the steps of obtaining power equation balance constraints and spinning reserve inequality balance constraintsof a wind power prediction error and a load prediction error; obtaining a confidence level when the power equality balance constraint and the spinning reserve inequality balance constraint are relaxedinto power constraint balance; establishing a scheduling model considering fuzzy chance constraints according to the total operation cost, the CHP unit power generation cost, the conventional thermalpower unit power generation cost, the wind power operation and maintenance cost and the carbon emission cost, and recording the scheduling model as a first model; according to the confidence level and the first model, establishing a single-target opportunity planning model integrated with a fuzzy variable, and recording the single-target opportunity planning model as a second model; calculating an optimal solution of the second model; and performing wind power dispatching according to the optimal second model. According to the scheduling model considering the fuzzy opportunity constraint, thecarbon emission cost, the operation cost and uncertain factors are fully considered, the carbon emission is reduced, and the wind power consumption is improved.

Description

technical field [0001] The present invention relates to the field of wind power technology, in particular to a wind power scheduling method and system. Background technique [0002] Energy conservation and emission reduction, vigorous development of wind power and other new energy sources are inevitable trends in the development of the power industry. However, wind power and other new energy power generation is a fluctuating power source, and its uncertainty has brought serious safety hazards. When wind power is connected to the grid on a large scale, in order to ensure the safe operation of the grid, wind curtailment will occur, resulting in a substantial increase in the spinning reserve capacity of the system, which greatly reduces the economics of wind power grid connection. Important factors that decision makers must consider. [0003] In addition, under the low-carbon background, introducing carbon trading into the power system with large-scale wind power can reduce t...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q10/04G06Q50/06
CPCG06Q10/06312G06Q10/067G06Q10/04G06Q50/06Y04S10/50Y02E40/70
Inventor 赵钰婷周慧娟叶小晖崔杨付小标仲悟之唐耀华郑惠萍刘新元程雪婷薄利明
Owner NORTHEAST DIANLI UNIVERSITY
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