CN204925774U - Electric wire netting air conditioner peak period cooling water set intelligence subtracts carries control system - Google Patents

Abstract

The utility model discloses an intelligent load-reduction control system for an air-conditioning chiller during peak hours of a power grid, comprising a power metering system, a temperature metering system, an intelligent load-reduction control system, an air-conditioner intelligent load-reduction monitoring computer installed in a monitoring room of a building, and an electric power metering system. system, temperature measurement system, and intelligent load shedding control system are all electrically connected to the air-conditioning intelligent load shedding monitoring computer. The utility model can effectively reduce the peak load of the power grid in summer and slow down the construction investment of the power grid to meet the increasing peak load of the power grid. The system controls the running load and running time of the chiller by collecting indoor and outdoor temperature data, which can bring huge benefits to users. Energy saving benefits. The optical fiber insulation of the utility model is stable and reliable, and the transmission signal is not affected by the environment and electromagnetism. The optical fiber temperature sensor can be directly installed on the point to be measured in the switch cabinet to transmit the temperature signal to the low potential, so as to realize the online monitoring of the operating temperature.

Description

An intelligent load shedding control system for air-conditioning chillers during power grid peak hours

technical field

The utility model belongs to the field of electric power management, in particular to an intelligent load reduction control system for an air-conditioning chiller during the peak hours of a power grid.

Background technique

Air-conditioning load shedding technology started earlier in the United States and my country's Taiwan region and has been studied more. As early as the 1970s, the United States began the research and practice of air-conditioning load control and energy saving. At present, most power suppliers in the United States provide such services. For example, Baltimore Gas and Electric provides 50% load reduction for commercial buildings. program, about 16,000 controlled terminals; Southern California Edison provides industrial and commercial users with 0%, 50%, 60%, and 70% central air-conditioning DCC solutions with four duty cycles, and 15,000 controlled terminals. At present, European and American countries have even introduced load shedding control into household air conditioner load control, and achieved significant energy saving and peak shaving effects. Domestic energy-saving measures for chilled water air-conditioning systems are mainly focused on the frequency conversion transformation of the circulation system, but for chillers, which consume the largest proportion of electricity in the air-conditioning system, there is no mature energy-saving technology research in China.

Utility model content

The purpose of the utility model is to provide an intelligent load shedding control system for air-conditioning chillers during peak hours of the power grid, aiming to solve the problem that the air-conditioning chillers cannot realize intelligent load shedding during peak hours of the power grid, resulting in energy waste.

The utility model is realized in this way. An intelligent load-shedding control system for air-conditioning chillers during the peak hours of the power grid includes a power metering system, a temperature metering system, an intelligent load-shedding control system, and an air-conditioning intelligent load-shedding monitoring computer installed in the monitoring room of the building. The power metering system, temperature metering system, and intelligent load-shedding control system are all electrically connected to the air-conditioning intelligent load-shedding monitoring computer;

The power metering system includes a smart meter installed in each water chiller, and the smart meter is electrically connected to the air-conditioning intelligent load shedding monitoring computer;

The temperature measurement system includes a temperature monitoring device installed in the building and each chiller;

The intelligent load shedding control system includes an intelligent load shedding control terminal installed on each chiller.

Furthermore, a temperature monitoring device is installed outside the building, four temperature monitoring devices are evenly installed on typical floors and important cold storage places inside the building, and a temperature monitoring device is installed on the return pipe wall of each chiller.

Further, the temperature monitoring device includes a temperature sensor, a multimode optical fiber, an optical fiber temperature monitor, an alarm and a line detection network device;

The temperature sensor is connected with the optical fiber temperature monitor through the multimode optical fiber, the optical fiber temperature monitor is connected with the alarm, and the alarm is connected with a wired detection network device.

Further, the temperature sensor includes a temperature-sensitive quartz crystal and an optical modulator, the temperature-sensitive quartz crystal is connected to the optical modulator, and the optical modulator is connected to a multimode optical fiber.

Further, the optical fiber temperature monitor is provided with a display screen.

The utility model can effectively reduce the peak load of the power grid in summer and slow down the construction investment of the power grid to meet the increasing peak load of the power grid. Most of the time, the operating conditions of the air conditioner deviate from the optimal operating conditions, resulting in a great waste of energy. The system controls the operating load and running time of the chiller by collecting indoor and outdoor temperature data, which can bring users Huge energy saving benefits. The optical fiber insulation of the utility model is stable and reliable, and the transmission signal is not affected by the environment and electromagnetism. The optical fiber temperature sensor can be directly installed on the point to be measured in the switch cabinet to transmit the temperature signal to the low potential, so as to realize the online monitoring of the operating temperature.

Description of drawings

Fig. 1 is a schematic structural diagram of an intelligent load shedding control system for an air-conditioning chiller during a power grid peak hour provided by an embodiment of the utility model;

In the figure: 1. Power metering system; 2. Outdoor temperature monitoring device; 3. Indoor temperature measuring device; 4. Return water pipe temperature monitoring device; 5. Air conditioner intelligent load shedding monitoring computer; 6. Intelligent load shedding control terminal; 7 ,data center;

Fig. 2 is a schematic structural diagram of a temperature monitoring device provided by an embodiment of the present invention;

In the figure: 8, temperature sensor; 8-1, temperature quartz crystal; 8-2, optical modulator; 8-3 optical fiber interface; 9, multimode optical fiber; 10, optical fiber temperature monitor; 10-1, display screen; 11. Alarm; 12. Online detection network device.

Detailed ways

In order to further understand the utility model content, features and effects of the present utility model, the following examples are exemplified, and detailed descriptions are as follows in conjunction with the accompanying drawings.

Please refer to Figure 1:

The utility model is realized in this way. An intelligent load-shedding control system for air-conditioning chillers during peak hours of the power grid is composed of three subsystems: a power metering system 1, a temperature metering system, and an intelligent load-shedding control system. The intelligent load shedding monitoring computer 5 collects temperature data, as well as chiller power consumption and state quantity data, sends chiller control quantity data, and implements control instructions and status information upload with the power company data center through the network, and can also be isolated net running.

(2) Power metering circuit: Install smart meters on each chiller to measure the power and electricity of each chiller in real time to ensure that the load shedding capacity meets the peak-shaving capacity requirements, and transmit the power consumption data to the air-conditioning smart reducer in the monitoring room of the building. monitoring computer;

(3) Temperature measurement circuit: install an outdoor temperature monitoring device 2 outside the building, set four indoor temperature monitoring devices 3 evenly on typical floors inside the building and important cold storage places, and install a return water pipe wall on the return water pipe wall of each chiller. The water pipeline temperature monitoring device 4 monitors the indoor and outdoor temperatures of the building and the return water temperature of the chiller in real time, and transmits the temperature data to the air-conditioning intelligent load shedding monitoring computer 5;

(4) Intelligent load shedding control loop, install a set of intelligent load shedding control terminal 6 in each chiller, used to execute the load shedding control command and recovery command issued by the air conditioner intelligent load shedding monitoring computer 5 .

The operation process of the intelligent load shedding control system for air-conditioning chillers during peak hours of the power grid is:

During the peak hours of the power grid, the power company predicts the peaking capacity demand for the next period, and issues a load reduction order to the user according to the pre-determined load reduction contract capacity of each participating user. The air conditioner intelligent load reduction monitoring computer 5 installed in the building monitoring room accepts the According to the power consumption data of each chiller collected by the current power metering circuit and the indoor and outdoor temperature data collected by the temperature metering circuit, the maximum operating load of the chiller is automatically calculated, and the load reduction control information is sent to the intelligent load reduction system. load control terminal 6, the chiller runs under load reduction.

As shown in Figure 2, the temperature monitoring device includes a temperature sensor 8, a multimode optical fiber 9, an optical fiber temperature monitor 10, an alarm 11 and an online detection network device 12, and the temperature sensor 8 is connected to the optical fiber temperature monitor 10 through a multimode optical fiber 9 , the optical fiber temperature monitor 10 is connected to the alarm 11, and the alarm 11 is connected to a wired detection network device 12.

The temperature sensor 8 includes a temperature-sensitive quartz crystal 8-1, an optical modulator 8-2 and an optical fiber interface 8-3, and the temperature-sensitive quartz crystal 8-1, the optical modulator 8-2 and the optical fiber interface 8-3 are connected in sequence , the optical fiber interface 8-3 is connected to one end of the multimode optical fiber 9 .

The optical fiber temperature monitor 10 is provided with a display screen 10-1.

The optical fiber temperature monitor 10 in the utility model can give an over-temperature alarm signal according to a predetermined value, and its RS--485 interface supports network operation mode to upload temperature signals and alarm signals to realize online monitoring; the optical fiber insulation is stable and reliable The transmission signal is not affected by the environment and electromagnetism. The optical fiber temperature sensor can be directly installed on the point to be measured in the switch cabinet to transmit the temperature signal to the low potential to realize the online monitoring of the operating temperature.

The intelligent load shedding control system for air-conditioning chillers during peak hours of the power grid can effectively reduce the peak load of the power grid in summer and slow down the investment in power grid construction to meet the increasing peak load of the power grid. At the same time, the refrigerators of the air-conditioning system of general buildings are configured according to the maximum required cooling capacity. However, due to the relatively large climate change in actual operation, the operating conditions of the air conditioners deviate from the optimal operating conditions most of the time, resulting in a large amount of energy. Waste, the system controls the operating load and running time of the chiller by collecting indoor and outdoor temperature data, which can bring huge energy-saving benefits to users.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any simple modifications made to the above embodiments according to the technical essence of the present utility model are equivalent to changes and modifications. All belong to the scope of the technical solution of the utility model.

Claims (5)

1. An intelligent load shedding control system for air-conditioning chillers during power grid peak hours, characterized in that, the intelligent load shedding control system for air-conditioning chillers during peak hours of the power grid includes a power metering system, a temperature metering system, an intelligent load shedding control system, and The air-conditioning intelligent load shedding monitoring computer installed in the monitoring room of the building, the power metering system, temperature metering system, and intelligent load shedding control system are all electrically connected to the air-conditioning intelligent load shedding monitoring computer; The power metering system includes a smart meter installed in each water chiller, and the smart meter is electrically connected to the air-conditioning intelligent load shedding monitoring computer; The temperature measurement system includes a temperature monitoring device installed in the building and each chiller; The intelligent load shedding control system includes an intelligent load shedding control terminal installed on each chiller. 2. The intelligent load reduction control system for air-conditioning chillers during power grid peak hours as claimed in claim 1, characterized in that a temperature monitoring device is installed outside the building, and four temperature monitoring devices are evenly installed on typical floors and important cold storage places inside the building , Install a temperature monitoring device on the return pipe wall of each chiller. 3. The intelligent load-shedding control system of air-conditioning chillers during power grid peak hours as claimed in claim 1, wherein the temperature monitoring device includes a temperature sensor, a multimode optical fiber, an optical fiber temperature monitor, an alarm and a line detection network device ; The temperature sensor is connected with the optical fiber temperature monitor through the multimode optical fiber, the optical fiber temperature monitor is connected with the alarm, and the alarm is connected with a wired detection network device. 4. The intelligent load-shedding control system for air-conditioning chillers during power grid peak hours as claimed in claim 3, wherein the temperature sensor comprises a temperature-sensitive quartz crystal and an optical modulator, the temperature-sensitive quartz crystal is connected to the optical modulator, and the optical The modulator is connected to a multimode fiber. 5. The intelligent load shedding control system for air-conditioning chillers during power grid peak hours as claimed in claim 3, wherein said optical fiber temperature monitor is provided with a display screen.