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Calculation method for electric load adjustable range of heat and power cogeneration unit in heating period

A technology of cogeneration unit and calculation method, which is applied in the directions of calculation, electrical digital data processing, special data processing application, etc.

Inactive Publication Date: 2015-11-11
STATE GRID TIANJIN ELECTRIC POWER +1
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AI Technical Summary

Problems solved by technology

At present, there is no calculation method for the adjustable range of electric load of cogeneration units in the heating period, which is relatively mature in the field of peak-shaving capacity of cogeneration units and can be applied in the engineering field

Method used

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  • Calculation method for electric load adjustable range of heat and power cogeneration unit in heating period
  • Calculation method for electric load adjustable range of heat and power cogeneration unit in heating period
  • Calculation method for electric load adjustable range of heat and power cogeneration unit in heating period

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Embodiment Construction

[0052] The implementation of the present invention will be described in further detail below. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0053] A method for calculating the adjustable range of the electrical load of a combined heat and power unit during the heating period, the method includes the following steps:

[0054] ⑴Statistically organize the heating data of the unit during the heating period: specifically:

[0055] The heating data is collected, recorded and sorted through the test, and the measuring points include: unit load, main steam temperature, main steam pressure, main steam flow, heating extraction steam flow, medium pressure cylinder exhaust to low pressure cylinder valve opening, medium pressure cylinder Pressure cylinder exhaust pressure, medium pressure cylinder exhaust temperature;

[0056] (2) Using the theory of equivalent heat drop, calculate the equivalent heat drop o...

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Abstract

The invention relates to a calculation method for an electric load adjustable range of a heat and power cogeneration unit in a heating period. The method comprises the steps of: (1) carrying out statistical processing on heating data in the heating period of the unit; (2) calculating a new steam equivalent heat drop and a heating steam extraction equivalent heat drop of a steam turbine by using an equivalent heat drop theory; (3) according to the equivalent heat drop theory, obtaining a relation equation of generated power of the unit, main steam flow and heating steam extraction flow; (4) carrying out calculation on the generated power of the unit according to the relation equation in the step (3); and (5) obtaining power generation loads of the heating unit under different heating loads. According to the method, the equivalent heat drop value can be calculated accurately and effectively, the relation among the generated power of the unit, the main steam flow and the heating steam extraction flow is obtained, furthermore the power generation loads of the heating unit under the different heating loads are obtained, and finally the electric load adjustable range of the heating unit is obtained. The method not only benefits power and energy balance of areas but also can significantly improve economic efficiency of system operation.

Description

technical field [0001] The invention belongs to the technical field of electric load peak-shaving capability of cogeneration units, in particular to a calculation method for the adjustable range of electric load of cogeneration units during a heating period. Background technique [0002] When cogeneration units use heat to determine electricity during the winter heating period, the peak-shaving capacity will decrease accordingly. Reasonable use of the peak-shaving capacity of cogeneration units is not only conducive to completing regional projects with limited installed capacity. The balance of electricity and electricity, and the effective regulation and control of tie lines can also significantly improve the economic efficiency of the power company's system operation and operation. At present, there is no calculation method for the adjustable range of electric load of cogeneration units in the heating period, which is relatively mature in the field of peak-shaving capacity...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 王建张宇周连升张利甘智勇屈斌王梓越
Owner STATE GRID TIANJIN ELECTRIC POWER
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