Online optimization method for thermoelectric load distribution of multiple heat supply units of thermal power plant cluster

A heating unit and load distribution technology, which is applied in the direction of instruments, data processing applications, forecasting, etc., can solve the problems of not considering the economic impact of thermal and electrical load changes, and no steam optimization, etc., to improve calculation speed and accuracy, reduce total energy consumption, achieve precise definition and the effect of

Active Publication Date: 2019-07-05
黑龙江苑博信息技术有限公司 +4
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the distribution of steam with different energy qualities has not been optimized in the thermal and electrical l

Method used

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  • Online optimization method for thermoelectric load distribution of multiple heat supply units of thermal power plant cluster
  • Online optimization method for thermoelectric load distribution of multiple heat supply units of thermal power plant cluster
  • Online optimization method for thermoelectric load distribution of multiple heat supply units of thermal power plant cluster

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specific Embodiment approach 1

[0014] Specific implementation mode one: as figure 1 As shown, the online optimization method for thermal power load distribution of multiple heating units in a thermal power plant fleet described in this embodiment includes the following steps:

[0015] Step 1. Obtain the actual heat consumption curve of each heating unit in the n heating units according to the test, and then correct the total coefficient θ according to the consumption difference of each heating unit i Correct the actual heat consumption curve to obtain the design heat consumption curve of the unit; where: i=1,2,...,n;

[0016] Step 2. According to the heat consumption value R corresponding to each heating unit in the design heat consumption curve of the unit i , to set the objective function for optimizing the heat and electricity load distribution of the heating unit;

[0017] Step 3, setting the constraint conditions of the objective function of step 2;

[0018] Step 4. According to the objective functi...

specific Embodiment approach 2

[0020] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is: the specific process of the step one is:

[0021] According to the test, the actual heat consumption curve of each heating unit in the n heating units is obtained. The actual heat consumption curve refers to: with the power P of the i-th heating unit i and the extraction steam quantity Q of m different steam extraction positions of the i-th heating unit i1 ,...,Q im As an independent variable, take the heat consumption value R of the i-th heating unit i is a family of curves for the dependent variable;

[0022] Correct the total coefficient θ by using the consumption difference of each heating unit i The actual heat consumption curve is corrected to obtain the unit design heat consumption curve, which is expressed as:

[0023] The first heating unit: R 1 = θ 1 ·f(P 1 ,Q 11 ,...,Q 1m );

[0024] The second heating unit: R 2 = θ 2 ·f(P 2 ...

specific Embodiment approach 3

[0028] Specific implementation mode three: the difference between this implementation mode and specific implementation mode one or two is: the total coefficient θ of the consumption difference correction of each heating unit i It is determined according to the deviation from the design value of the six factors of condenser back pressure, main steam pressure, main steam temperature, reheat pressure, reheat steam temperature and feed water temperature.

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Abstract

The invention discloses an online optimization method for the thermoelectric load distribution of multiple heat supply units of a thermal power plant cluster, and belongs to the technical field of thermoelectric load distribution of heat supply units. The method solves the problems that the targeted optimization is not carried out on steam distribution of different energy qualities in thermoelectric load distribution of multiple heat supply units at the present stage, and the influence of the thermoelectric load change on the economy after steam distribution is not considered. According to thepresent invention, during the online optimization process of the thermoelectric load distribution, the type characteristics of different steam extraction units and the influence of different parameters on heat consumption are comprehensively considered, and the accurate definition of the boundary conditions of the units and the accurate calculation of the heat consumption value are achieved; during the optimization process, the boundary conditions are defined in a more multi-level mode, the speed is increased, and the local optimization is avoided; the reasonable distribution of the steam with different energy qualities and the electric power is realized under the condition that a plurality of steam extraction and heat supply units are arranged in the cluster and each steam extraction unit has a plurality of steam extraction points, and the total energy consumption is reduced. The method can be applied to the technical field of the thermoelectric load distribution of heat supply units.

Description

technical field [0001] The invention belongs to the technical field of thermoelectric load distribution of heating units, and in particular relates to an online optimization method for the distribution of thermoelectric loads of multiple heating units in a thermal power plant cluster. Background technique [0002] With the development of the economy and the improvement of the quality of life of the people, the urban central heating system has been developed rapidly, and the energy conversion efficiency of cogeneration has obvious advantages. Therefore, the heating and extraction unit has been vigorously developed. The steam extraction heating unit provides users with electricity and heating heat. The amount of heat and electricity provided by the power plant is controlled by the needs of heat users and electricity users. Therefore, the power plant must adjust the heat supply and extraction according to the needs of heat users and electricity users. The heat and electricity l...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 李兴朔付俊丰姚坤叶青孙殿承李丰均万杰居国腾金康华沈伟军张磊孙建国石家魁纪成龙李晓明颜培刚
Owner 黑龙江苑博信息技术有限公司
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