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Centralized heat supply pipe network modeling method suitable for electricity and heat combined dispatching

A joint dispatching and central heating technology, applied in the field of power system, can solve the problems of long planning and construction period, high investment cost, and difficult realization, so as to expand the way of consumption, reduce the rate of wind abandonment, and improve the integration of wind power into the grid effect of space

Pending Publication Date: 2021-07-30
STATE GRID LIAONING ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned measures generally have the problems of long planning and construction period and high investment cost. Due to the constraints of relevant policies and technologies, it is difficult to realize them in the short term.

Method used

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  • Centralized heat supply pipe network modeling method suitable for electricity and heat combined dispatching
  • Centralized heat supply pipe network modeling method suitable for electricity and heat combined dispatching
  • Centralized heat supply pipe network modeling method suitable for electricity and heat combined dispatching

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Embodiment 1

[0097] The present invention is a central heating pipe network modeling method suitable for electricity and heat combined dispatching, which specifically includes the following steps:

[0098] Step 1. Establish a central heating pipe network model.

[0099] Step (1) The relationship between the heat power transmitted by the pipeline and the temperature of the water flow.

[0100]

[0101]

[0102] In the formula: the superscript in and out represent the pipeline inlet and outlet respectively; the subscript p represents the variable related to the pipeline; the subscript k represents the pipeline number; the subscript t represents the scheduling period number; H represents the thermal power; c w Indicates the specific heat capacity of hot water; G p,k,t is the mass flow rate of hot water; T is the water flow temperature.

[0103] Step (2) water flow temperature limitation.

[0104]

[0105]

[0106] In the formula: the superscripts min and max represent the minim...

Embodiment 2

[0154] Based on the same inventive concept, an embodiment of the present invention also provides a computer storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the electric heating system described in Embodiment 1 is implemented. Steps of a joint scheduling central heating network modeling approach.

[0155] Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

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Abstract

The invention belongs to the technical field of electric power systems, and particularly relates to a centralized heat supply pipe network modeling method suitable for electricity and heat combined dispatching. The method comprises the following steps: establishing a centralized heating pipe network model; constructing an electricity and heat combined dispatching model; and obtaining a solving result according to the constructed electric heating joint scheduling model. According to the invention, electric heating energy advantage complementation is utilized to realize operation decoupling, an electric heating combined dispatching model considering pipe network thermal characteristics is constructed, influence factors such as system electric heating load, system peak load regulation capability and wind power uncertainty are comprehensively considered; on the premise of considering the operation cost and wind power consumption benefits, the optimal operation curve of each type of unit is solved, and the wind power integration space is improved. The invention can promote the utilization of comprehensive energy such as electric heating, expand the absorption way of clean energy, improve the comprehensive utilization efficiency of energy, reduce the wind curtailment rate in the heat supply period in winter and reduce the burnup cost of a unit, and has important significance under the background of large-scale concentrated grid connection of wind power.

Description

technical field [0001] The invention belongs to the technical field of electric power systems, and in particular relates to a modeling method of a centralized heating pipe network suitable for electric-heat combined dispatching. Background technique [0002] Wind power is uncertain and unbalanced in time and space. In recent years, with the continuous expansion of wind power development in my country, serious wind curtailment problems have arisen. According to statistics, in recent years, the abandoned wind power in the "three north" regions of Northeast, Northwest and North China has almost covered the total abandoned wind power in my country, among which the Northeast region is the most prominent, and more than 90% of the abandoned wind power in the Northeast occurred in winter. The problem of wind curtailment during the heating period in winter is one of the most important factors affecting the utilization of wind power. The climate in Northeast China is cold, and the hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/18G06F30/20G06Q10/06G06Q50/06G06F111/04G06F113/06G06F113/08G06F113/14G06F119/06G06F119/08
CPCG06F30/18G06F30/20G06Q10/06315G06Q50/06G06F2111/04G06F2113/06G06F2113/08G06F2113/14G06F2119/06G06F2119/08Y04S10/50
Inventor 李平孙峰郝建成李胜辉董鹤楠白雪程绪可张冠锋郑志勤戈阳阳张潇桐马欣彤谢冰孙俊杰袁鹏
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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