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A fitting method and system for power generation fuel cost of a thermal power generating unit

A thermal power unit and power generation fuel technology, applied in the direction of system integration technology, information technology support system, data processing application, etc., can solve the problems of inability to guarantee the minimum fitting error, large error, cost error and economical operation results, etc.

Active Publication Date: 2019-06-04
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This segmentation method is relatively simple, but the disadvantage is that the overall fitting error cannot be guaranteed to be the smallest, especially when the generating power of the thermal power unit is in the middle of the segmentation interval, the error is the largest
In the long-term scale economical operation simulation, the accumulation of cost errors will have a great impact on the economical operation results

Method used

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  • A fitting method and system for power generation fuel cost of a thermal power generating unit
  • A fitting method and system for power generation fuel cost of a thermal power generating unit
  • A fitting method and system for power generation fuel cost of a thermal power generating unit

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Embodiment 1

[0077] like figure 1 Shown:

[0078] Step 1: Obtain the thermal power generation power and fuel cost;

[0079] Step 2: Bring the thermal power generation power, fuel cost and the set number of line segment intervals into the pre-built secondary objective optimization model;

[0080] Step 3: Calculate and solve the quadratic objective optimization model to obtain the fuel costs at the end points of the thermal power generation power range and at the subsections.

[0081] The above-mentioned steps are further explained below in conjunction with specific embodiments:

[0082] The explanation for step 1 is as follows:

[0083] The present invention proposes a piecewise linear fitting method for the cost of generating fuel for thermal power units, and establishes a secondary objective optimization model with the minimum sum of squared linear fitting errors as the optimization goal. By solving the secondary programming model, it can be obtained The discontinuity points of the pi...

Embodiment 2

[0134] The present invention also relates to a fitting system for the fuel cost of thermal power generating units, including:

[0135] Acquisition module: used to obtain thermal power generation power and fuel costs;

[0136] Bringing in module: used to bring the thermal power generation power, fuel cost and the set line segment interval quantity into the pre-built secondary objective optimization model, and abstract it;

[0137] Calculation module: It is used to calculate and solve the abstracted secondary objective optimization model, and obtain the fuel cost at the end point and segment of the power generation range of the thermal power unit.

[0138] Also includes quadratic objective optimization model building blocks;

[0139] The secondary objective optimization model building block is used to: set the piecewise linear function with the square sum of the fitting error as the objective function and the constraint condition;

[0140] The constraints include: optimal piec...

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Abstract

The invention relates to a fitting method and system for power generation fuel cost of a thermal power generating unit. The method comprises the following steps: acquiring data of the thermal power generating unit and the number of subsection intervals for fitting the fuel cost; Abstracting a pre-established piecewise linear optimal fitting optimization model into a mathematical form based on theacquired data and the number of piecewise intervals fitted by the fuel cost; And optimizing the abstracted mathematical form by adopting a reliability domain algorithm to obtain the endpoint of the power generation power subsection interval of the thermal power generating unit and the fuel cost at the endpoint. The invention discloses a fitting method and system for power generation fuel cost of athermal power generating unit. The method comprises the following steps: acquiring data of the thermal power generating unit and the number of subsection intervals fitted with the fuel cost; And optimizing the abstracted mathematical form by adopting a reliability domain algorithm to obtain a thermal power generating unit generating power subsection interval end point and the fuel cost at the endpoint, thereby greatly reducing the error of subsection linear fitting, and reducing the number of subsections required by a fuel cost function, thereby reducing the complexity and solving difficultyof a time sequence simulation optimization model.

Description

technical field [0001] The invention relates to a fitting method and system for fuel cost of thermal power generating units, which are used for accurately calculating the generating and operating costs of thermal generating units. Background technique [0002] Simulating the operation of conventional power sources and new energy sources in the power market environment through long-term time-series simulation is of great significance for quantitatively evaluating the operating economy and income of different types of power sources in the power market environment. Carrying out the economical operation simulation of the power system in the market environment needs to accurately calculate the power generation operation cost of conventional power sources such as thermal power units. [0003] The operating cost of power generation of thermal power units is mainly fuel costs, that is, the cost of coal and other fuels consumed by thermal power units. When a thermal power unit gener...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06Q50/06
CPCY04S10/50Y02E40/70
Inventor 刘纯李湃黄越辉王伟胜王跃峰礼晓飞张琳
Owner CHINA ELECTRIC POWER RES INST
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