Method and system for determining electrical load adjustment interval of low-vacuum heat supply unit

A technology for heating units and adjusting intervals, which is applied in the directions of instruments, data processing applications, resources, etc., can solve the problems of complicated calculation, small variation range of electric load, and many parameters, and achieves guaranteed calculation results, less calculation parameters, and improved calculation. The effect of efficiency

Pending Publication Date: 2020-12-11
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The electric load adjustment interval of the low-vacuum heating unit refers to the variation range from the lowest to the highest electric load of the unit that meets the basic heating demand. The range of change is small. In the prior art, the method of comprehensive heat balance calculation is generally used to calculate the electrical load of the heating unit. There are many parameters and the calculation is cumbersome.

Method used

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  • Method and system for determining electrical load adjustment interval of low-vacuum heat supply unit
  • Method and system for determining electrical load adjustment interval of low-vacuum heat supply unit
  • Method and system for determining electrical load adjustment interval of low-vacuum heat supply unit

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Embodiment 1

[0035] Such as figure 1 As shown, Embodiment 1 of the present disclosure provides a method for determining the electric load adjustment interval of a low-vacuum heating unit, including the following steps:

[0036] According to the preset main steam flow and the main steam flow under the reference condition, the main steam flow correction coefficient is obtained, and the enthalpy drop correction coefficient and the regenerative steam extraction coefficient are obtained by iteration according to the exhaust steam parameter data;

[0037] According to the regenerative steam extraction coefficient, the preset main steam flow rate and the preset heating extraction steam flow rate, the total heat supply of the current working condition is obtained;

[0038] When the total heat supply of the current working condition is greater than the preset heating demand, the electric load is obtained according to the obtained main steam flow correction coefficient and steam enthalpy drop correc...

Embodiment 2

[0090] Embodiment 2 of the present disclosure provides a low-vacuum heating unit electric load adjustment interval determination system, including:

[0091] The correction coefficient calculation module is configured to: obtain the main steam flow correction coefficient according to the preset main steam flow and the main steam flow under the reference working condition, and iteratively obtain the enthalpy drop correction coefficient and the regenerative steam extraction coefficient according to the exhaust steam parameter data;

[0092] The total heat supply calculation module is configured to: obtain the total heat supply of the current working condition according to the regenerative steam extraction coefficient, the preset main steam flow rate and the preset heating extraction steam flow rate;

[0093] The electrical load calculation module is configured to: when the total heat supply of the current working condition is greater than the preset heating demand, the electrical ...

Embodiment 3

[0097] Embodiment 3 of the present disclosure provides a medium on which a program is stored. When the program is executed by a processor, the steps in the method for determining the electric load adjustment interval of a low-vacuum heating unit as described in Embodiment 1 of the present disclosure are implemented. The above steps are:

[0098] According to the preset main steam flow and the main steam flow under the reference condition, the main steam flow correction coefficient is obtained, and the enthalpy drop correction coefficient and the regenerative steam extraction coefficient are obtained by iteration according to the exhaust steam parameter data;

[0099] According to the regenerative steam extraction coefficient, the preset main steam flow rate and the preset heating extraction steam flow rate, the total heat supply of the current working condition is obtained;

[0100] When the total heat supply of the current working condition is greater than the preset heating ...

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Abstract

The invention provides a method and system for determining an electric load adjustment interval of a low-vacuum heat supply unit, and the method comprises the steps: obtaining a main steam flow correction coefficient according to a preset main steam flow and a main steam flow under a reference working condition, and obtaining an enthalpy drop correction coefficient and a regenerative steam extraction coefficient according to the iteration of steam exhaust parameter data and acquiring the total heat supply amount of the current working condition; when the total heat supply amount of the currentworking condition is larger than the preset heat supply requirement, acquiring the electric load according to the obtained main steam flow correction coefficient and steam enthalpy drop correction coefficient; calculating electric loads under different preset main steam flows and preset steam extraction flows, and taking a range between the maximum electric load and the minimum electric load of the unit as an electric load adjustment interval of the low-vacuum heat supply unit; according to the invention, the correction coefficient of the key parameter is introduced to calculate the electrical load, and the calculation efficiency can be greatly improved on the premise of ensuring the accuracy.

Description

technical field [0001] The disclosure relates to the technical field of thermal power unit peak regulation, and in particular to a method and system for determining an electric load adjustment interval of a low-vacuum heating unit. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] The low-vacuum heating technology of thermal power units refers to reducing the steam expansion and increasing the back pressure of the condenser by reducing the blades of the last few stages of the steam turbine. As a result, the temperature of the circulating water outlet is raised, and the circulating water is directly introduced into the heat supply technology of the heat network for heat exchange. The low-vacuum heating of the steam turbine unit can make full use of the latent heat of vaporization of the steam, thereby greatly reducing the heat rate of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06315G06Q50/06
Inventor 郭俊山韩悦祝令凯商攀峰车永强郭盈
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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