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Electric power dynamic load peak shaving method for central air conditioning system

A central air-conditioning system and dynamic load technology, applied in heating and ventilation control systems, heating and ventilation safety systems, high-efficiency regulation technology, etc., can solve problems such as high maintenance costs, small operating scenarios, and limited capacity, and achieve power utilization. The effect of low cost, simple scheme and large energy storage demand

Pending Publication Date: 2022-03-11
江苏多纬智控科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Limited capacity, low efficiency, and small operating scenarios;
[0004] 2. The investment is large, and it is necessary to find a suitable venue;
[0005] 3. Professional maintenance costs are high, and operation management requires professional manpower and material resources. In view of this, we propose a method for dynamic load regulation of central air-conditioning systems

Method used

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  • Electric power dynamic load peak shaving method for central air conditioning system
  • Electric power dynamic load peak shaving method for central air conditioning system
  • Electric power dynamic load peak shaving method for central air conditioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see figure 1 As shown, this embodiment provides a method for dynamic load load regulation of a central air-conditioning system, including the following steps:

[0036] Establish a link relationship between the central air-conditioning system and the power peak-shaving interface, and receive signals. The central air-conditioning system includes refrigeration pumps, cooling pumps, cooling towers, chillers, and terminals. The link relationship between the central air-conditioning system and the power peak-shaving interface represents In order to make the central air-conditioning system a carrier of power dynamic load peak-shaving, the central air-conditioning system can receive the signal of power peak-shaving, so as to control and execute the corresponding peak-shaving command, so that the central air-conditioning system becomes the carrier of power dynamic load peak-shaving, convenient and effective performance of power peak-shaving ;

[0037] Specifically, the peak sha...

Embodiment 2

[0044] In order to implement peak shaving instructions according to power peak shaving and make full use of resources, the difference between this embodiment and embodiment 1 is that, please refer to Figure 2-Figure 4 shown, where:

[0045] The central air-conditioning system also includes an energy storage unit, which is used to store cold energy to meet greater energy storage requirements, which can meet the greater demand for power peak regulation in traditional central air-conditioning systems.

[0046] Specifically, when the energy storage unit issues the peak shaving command, it includes the following postures:

[0047] Attitude 1. The power peak shaving is in the peak period and the power supply is in short supply. A peak shaving command is issued to enable the energy storage unit to enter the energy discharge mode. When discharging energy, control the cooling pump, cooling tower, and chiller to be turned off, and the cooling pump is turned on;

[0048] Attitude 2. Sw...

Embodiment 3

[0053] In order to improve energy storage efficiency and reduce power load, the difference between this embodiment and embodiment 2 is that please refer to Figure 5 shown, where:

[0054] The energy storage unit also includes a valley filling module, which is used to perform valley filling in a planned manner when the load is low.

[0055] Specifically, when the valley-filling module issues the peak-shaving instruction, it includes the following gestures:

[0056] Attitude 1, the cold storage pump, cooling pump, cooling tower and cooling machine are turned on during valley hours, and the system enters the energy storage stage;

[0057] Attitude 2. The energy storage is released during peak hours to realize the function of dynamic load regulation, and on the basis of realizing a larger-capacity power peak-shaving interface, it can meet the power grid balance demand and realize the power load regulation demand that the power grid needs to fill valleys during low-load periods. ...

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PUM

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Abstract

The invention relates to the technical field of central air conditioners, in particular to an electric power dynamic load peak shaving method for a central air conditioning system. The method comprises the following steps that the link relation between the central air-conditioning system and an electric power peak regulation interface is established, signals are received, when the central air-conditioning system is in an electric power peak regulation state, the central air-conditioning system issues a peak regulation instruction, after the peak regulation instruction is received, a freezing pump, a cooling pump, a cooling tower, a refrigerator and a tail end carry out peak regulation according to the peak regulation instruction, and when peak regulation is not needed, the freezing pump, the cooling pump, the cooling tower, the refrigerator and the tail end carry out peak regulation. And the central air-conditioning system enters a conventional high-efficiency mode, and the conventional high-efficiency mode is a normal use state of the central air-conditioning system. According to the method, a large-scale central air-conditioning system participates in power grid regulation, the cooling capacity is stored, the larger energy storage requirement is met, and the larger power peak regulation requirement of a traditional central air conditioner can be met.

Description

technical field [0001] The invention relates to the technical field of central air-conditioning, in particular to a method for dynamic load regulation of electric power in a central air-conditioning system. Background technique [0002] Nowadays, the main methods to maintain the stability of the voltage system are peak regulation and frequency regulation. For the field of power station peak regulation, energy storage plays an important role. Grid energy storage helps balance the supply and demand relationship of power generation, distribution and use, and alleviates the power supply gap of the power grid. Currently, the commonly used energy storage technologies include pumped water storage, compressed air energy storage, chemical battery energy storage, fuel cells, lithium batteries, etc. However, the current power dynamic load peak regulation includes the following defects: [0003] 1. Limited capacity, low efficiency, and small operating scenarios; [0004] 2. The investm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/54F24F11/65F24F11/85F24F11/77F24F140/50
CPCF24F11/54F24F11/65F24F11/85F24F11/77F24F2140/50Y02B30/70
Inventor 韩斌斌黄顺玉卢洁新
Owner 江苏多纬智控科技有限公司