Power stratified coordinated stabilization strategy of electric heating microgrid tie line based on distributed heat pump group control

A technology for tie-line power and heat pump groups, applied in the field of electric power, can solve the problems of not making full use of the electric-thermal coupling and conversion potential of heat pump components, and single control mode of heat pumps

Active Publication Date: 2022-07-12
JIANGSU ELECTRIC POWER CO +2
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  • Description
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  • Application Information

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Problems solved by technology

Due to the single control method of the heat pump, the electrothermal coupling and conversion potential of the heat pump components cannot be fully utilized

Method used

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  • Power stratified coordinated stabilization strategy of electric heating microgrid tie line based on distributed heat pump group control
  • Power stratified coordinated stabilization strategy of electric heating microgrid tie line based on distributed heat pump group control
  • Power stratified coordinated stabilization strategy of electric heating microgrid tie line based on distributed heat pump group control

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Embodiment Construction

[0026] In order to effectively suppress the power fluctuation of the tie line of the electric heating micro-grid, the present invention proposes a layered coordinated stabilization strategy of the tie line power of the electric heating micro-grid based on the flexible control of the distributed heat pump. On the basis of direct load control technology, the characteristics of heat pump start-stop control and heat pump power regulation control are deeply analyzed, and the fast response speed of heat pump power regulation control is used to smooth the intermediate frequency fluctuations that cannot be suppressed by heat pump start-stop control. The flexible use of the two control methods can enable the heat pump group to effectively participate in the stabilization of the low-frequency fluctuation power in the microgrid tie line. The invention establishes a model of a heat pump group including a hot water storage tank, and proposes a power control target of a microgrid tie line ba...

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Abstract

Based on the distributed heat pump group control, the power stratified synergistic stabilization strategy of the electric heating microgrid tie line The raw power P of the tie line can be obtained from the raw energy and load power TL0 , and analyze the power control target P Tar , for the obtained fluctuating power P flu , According to the real-time information of renewable energy output and user load, combined with the energy storage status information of the battery and the hot water storage tank group, the output of the battery and the heat pump group is adjusted, so as to realize the smoothing of the fluctuation power of the electric heating microgrid tie line. The invention takes the coordinated control of the battery and the heat pump group as the core, makes full use of the supporting heat storage resources of the air source heat pump, ensures the heating requirements of each heat pump to the user while completing the smoothing of the power of the tie line, and effectively adjusts the power of the heat pump. Participate in the stabilization of intermediate frequency fluctuations, and reduce the implementation cost of the optimization plan.

Description

technical field [0001] The invention belongs to the technical field of electric power, and relates to a combined electric-heating microgrid, which is an electric-heating microgrid tie-line power layered and coordinated stabilization strategy based on distributed heat pump group control. Background technique [0002] Combined heat and power micro grid is a terminal integrated integrated energy supply facility composed of distributed energy, energy storage equipment, electric heating equipment and control unit based on the electricity and heat demand of end users. As a typical application of integrated energy, the electric heating microgrid is based on the microgrid. By flexibly controlling the distributed heating equipment and coordinating with the electrical equipment, the comprehensive utilization of electricity and heat can be realized. The electric heating microgrid can use two different energy forms, electricity and heat, to improve the reliability, economy and environme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24F24H9/20F24H15/156F24H15/16F24H15/38F24H4/04
CPCH02J3/24F24H4/04F24H9/2007Y02E70/30
Inventor 张勇王勇马洲俊黄文焘戴世刚王春宁许洪华邰能灵王立伟嵇文路
Owner JIANGSU ELECTRIC POWER CO
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