CN211650649U - Central air conditioning efficiency monitoring system - Google Patents
Central air conditioning efficiency monitoring system Download PDFInfo
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- CN211650649U CN211650649U CN201922182851.3U CN201922182851U CN211650649U CN 211650649 U CN211650649 U CN 211650649U CN 201922182851 U CN201922182851 U CN 201922182851U CN 211650649 U CN211650649 U CN 211650649U
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Abstract
The utility model discloses a central air-conditioning energy efficiency monitoring system, which comprises an equipment layer, a terminal layer, a communication layer and a main station layer, wherein the equipment layer comprises a water chilling unit, a cooling water circulating device, a cooling tower circulating device, a chilled water circulating device and an air-conditioning tail end circulating device; the terminal layer collects the data of the equipment layer and transmits the data; the communication layer constructs a communication network between the terminal layer and the master station layer, and performs data transmission and instruction transmission to realize communication connection; the master station layer is a virtual peak regulation master station, is connected with a power grid dispatching system, and regulates and controls the equipment layer according to instructions of the power grid dispatching system. The utility model provides a central air conditioning efficiency monitoring system passes through all parameters relevant with the operation on terminal layer collection equipment layer to the instruction controlgear layer on main station layer, diagnosis load operation situation and efficiency level provide data support for peak regulation ability prediction, effectively promote the efficiency, provide demand side auxiliary service for the electric wire netting.
Description
Technical Field
The utility model relates to a central air conditioning control technical field especially relates to a central air conditioning efficiency monitoring system.
Background
Along with the rapid development of domestic economy, the utilization rate of a central air-conditioning system in a civil building is increased rapidly, the central air-conditioning system meets the requirement of people on the environmental comfort level by adjusting the temperature and the humidity of a controlled environment, and the central air-conditioning system has the characteristics of time period concentration, adjustability and controllability and great potential. According to statistics, the electric quantity for air conditioning accounts for more than 30% of the urban electric quantity, and in the operation process of the central air conditioner, the use energy consumption of the central air conditioning system accounts for more than 50% of the total energy consumption of the building, and the central air conditioning system belongs to the highest energy consumption system in the building.
The central air-conditioning system is a multivariable, complex and time-varying system, serious nonlinearity, large lag and strong coupling relationship exist among process elements of the system, the sensibility and contribution rate of each energy consumption link in the central air-conditioning system to the energy efficiency level of the whole system are different, and when the seasonal change, the day-night temperature difference change and the actual use area of an air conditioner are changed, the central air-conditioning system is difficult to realize energy-saving control aiming at the optimal system energy efficiency in the existing operation mode.
At present, although a central air-conditioning system is provided with a part of sensors or controllers, the operation energy efficiency often cannot reach the design energy efficiency, the equipment maintenance is not timely, and the great energy waste is easily caused; moreover, the central air-conditioning system has slow response to the dispatching instruction issued by the power grid dispatching system, does not have the management function of the power grid demand side, is difficult to be matched with auxiliary services such as peak shaving, frequency modulation and the like of the power grid side, the power grid dispatching system cannot monitor all the operation data of the central air-conditioning system in real time, and the control means is limited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a central air conditioning efficiency monitoring system to solve current central air conditioning system operation energy efficiency poor, respond slow, do not possess the problem of electric wire netting demand side management function.
In order to achieve the above object, the present invention provides the following technical solutions: a central air-conditioning energy efficiency monitoring system comprises an equipment layer, a terminal layer, a communication layer and a main station layer, wherein,
the equipment layer comprises a water chilling unit, a cooling water circulating device, a cooling tower circulating device, a chilled water circulating device and an air conditioner tail end circulating device, wherein the water chilling unit, the cooling water circulating device and the cooling tower circulating device are connected in pairs, the water chilling unit is connected with the air conditioner tail end circulating device, and the chilled water circulating device is respectively connected with the water chilling unit and the air conditioner tail end circulating device;
the terminal layer collects data of the equipment layer and transmits the data, and comprises a gateway connected with the water chilling unit, first sensors respectively arranged on all devices in the equipment layer, a controller and a load monitoring terminal; the gateway collects the running state of the water chilling unit, wherein the running state comprises the uploading rate of the water chilling unit; the first sensor collects the operation parameters of each device in the equipment layer, and the operation parameters comprise the temperature of outlet and return water, the pressure of water flow, the air speed of a wind inlet/return port, the temperature of air flow and the humidity of the air inlet/return port in the equipment layer; the controller controls the opening and closing of each device in the equipment layer according to the operation parameters and the instruction of the master station layer; the load monitoring terminal monitors the power load of each device in the equipment layer;
the communication layer constructs a communication network between the terminal layer and the master station layer, and performs data transmission and instruction transmission to realize communication connection;
the master station layer is a virtual peak regulation master station, is connected with a power grid dispatching system, and regulates and controls the equipment layer according to instructions of the power grid dispatching system.
Further, the first sensor comprises a temperature sensor, a humidity sensor, a wind speed sensor, a pressure sensor and a differential pressure sensor.
Further, the terminal layer further comprises a second sensor arranged on the air conditioner terminal circulating device, and the second sensor comprises a fan coil temperature controller and a temperature and humidity sensor so as to collect the fan coil temperature and the indoor temperature and humidity of the air conditioner terminal circulating device.
Further, the second sensor also comprises a human body induction sensor so as to judge whether a person is in the room where the air conditioner tail end circulating device is located.
Further, the controller is a DDC controller.
Furthermore, the electric load monitored by the load monitoring terminal comprises three-phase current, three-phase voltage, active power, reactive power, time-sharing electric quantity and daily electric quantity.
Further, the communication layer comprises any one or combination of a 485 interface, WIFI, GPRS, Ethernet and Lonworks.
Compared with the prior art, the utility model provides a central air conditioning efficiency monitoring system has following advantage:
the utility model provides a central air conditioning efficiency monitoring system passes through all relevant parameters relevant with the operation on terminal layer collection equipment layer to the instruction control on main station layer the equipment layer, diagnosis load operation situation and efficiency level provide data support for peak regulation ability prediction, realize the regulation and the control to all controllable equipment's key control point, the omnidirectional of being convenient for is three-dimensional to be held and the control that becomes more meticulous, and follow-up tactics are optimized also rapider, effectively promote the efficiency, provide demand side auxiliary service for the electric wire netting.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings:
fig. 1 is a schematic structural diagram of a central air-conditioning energy efficiency monitoring system according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural diagram of a device layer in the central air-conditioning energy efficiency monitoring system shown in fig. 1.
Reference numerals:
1-equipment layer, 11-water chilling unit,
12-cooling water circulation device, 13-cooling tower circulation device,
14-a chilled water circulating device, 15-an air conditioner tail end circulating device,
2-terminal layer, 21-gateway,
22-a first sensor, 23-a controller,
24-load monitoring terminal, 25-second sensor,
3-a communication layer, 4-a master layer,
and 5, a power grid dispatching system.
Detailed Description
The present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific examples described in the following embodiments of the present invention are merely illustrative of specific embodiments of the present invention and do not constitute limitations on the scope of the invention.
The invention is further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a central air-conditioning energy efficiency monitoring system according to a preferred embodiment of the present invention.
The embodiment is a central air-conditioning energy efficiency monitoring system, which comprises a device layer 1, a terminal layer 2, a communication layer 3 and a master station layer 4, wherein,
the equipment layer 1 comprises a water chilling unit 11, a cooling water circulating device 12, a cooling tower circulating device 13, a chilled water circulating device 14 and an air conditioner tail end circulating device 15, wherein the water chilling unit 11, the cooling water circulating device 12 and the cooling tower circulating device 13 are connected in pairs, the water chilling unit 11 is connected with the air conditioner tail end circulating device 15, and the chilled water circulating device 14 is respectively connected with the water chilling unit 11 and the air conditioner tail end circulating device 15;
the terminal layer 2 collects data of the equipment layer 1 and transmits the data, and comprises a gateway 21 connected with the water chilling unit 11, first sensors 22 respectively arranged on all devices in the equipment layer 1, a controller 23 and a load monitoring terminal 24; the gateway 21 collects the running state of the water chilling unit 11, wherein the running state comprises the uploading rate of the water chilling unit 11; the first sensor 22 acquires operation parameters of each device in the equipment layer 1, wherein the operation parameters comprise water outlet and return temperature, water flow pressure, air speed of a wind inlet/return port, air flow temperature and humidity in the equipment layer 1; the controller 23 controls the on/off and the opening of each device in the equipment layer 1 according to the operation parameters and the instruction of the master station layer 4; the load monitoring terminal 24 monitors the electrical load of each device in the equipment layer 1;
the communication layer 3 constructs a communication network between the terminal layer 2 and the master station layer 4, and performs data transmission and instruction transmission to realize communication connection;
the master station layer 4 is a virtual peak regulation master station, is connected with a power grid dispatching system, and regulates and controls the equipment layer 1 according to instructions of the power grid dispatching system.
The utility model provides a central air conditioning efficiency monitoring system passes through terminal layer 2 gathers all relevant parameters relevant with the operation of equipment layer 1, and receive main website layer 4's instruction control equipment layer 1, diagnosis load operation situation and efficiency level provide data support for peak regulation ability prediction, realize the regulation and the control to all controllable equipment's key control point, the omnidirectional three-dimensional of being convenient for is held and is become more meticulous control, and follow-up tactics are optimized also rapider, effectively promote the efficiency, provide demand side auxiliary service for the electric wire netting.
As shown in fig. 2, fig. 2 is a schematic structural diagram of a device layer in the central air-conditioning energy efficiency monitoring system shown in fig. 1.
The equipment layer 1 is a central air-conditioning system and comprises a water chilling unit 11, a cooling water circulating device 12, a cooling tower circulating device 13, a chilled water circulating device 14 and an air-conditioning terminal circulating device 15, wherein the water chilling unit 11, the cooling water circulating device 12 and the cooling tower circulating device 13 are connected in pairs, the water chilling unit 11 is connected with the air-conditioning terminal circulating device 15, and the chilled water circulating device 14 is respectively connected with the water chilling unit 11 and the air-conditioning terminal circulating device 15.
The water chilling unit 11 generates chilled water with a lower temperature, the chilled water is sent to a cold area (namely, a room where the air-conditioning terminal circulating device 15 is located) through the chilled water circulating device 14, the chilled water with the higher temperature is exchanged to return to the water chilling unit 11, the water chilling unit 11 conducts heat of the chilled water with the higher temperature to cooling water with the lower temperature, the cooling water with the higher temperature is changed into cooling water with the higher temperature, the cooling water with the higher temperature is sent to the cooling tower circulating device 13 through the cooling water circulating device 12 and then is discharged to the outdoor through the cooling tower circulating device 13, and the cooling water with the lower temperature is changed to return to the water chilling unit 11.
The terminal layer 2 collects data of the equipment layer 1 and transmits the data, and includes a gateway 21 connected to the water chilling unit 11, first sensors 22 respectively disposed in the devices in the equipment layer 1, a controller 23, and a load monitoring terminal 24.
The gateway 21 collects the operation state of the water chilling unit 11, where the operation state includes the upload rate of the water chilling unit 11, and of course, the operation state further includes other operation parameters of the water chilling unit 11.
The first sensor 22 collects operation parameters of each device in the equipment layer 1, where the operation parameters include water outlet and return temperature, water flow pressure, air speed at the air inlet/air outlet, air flow temperature, and humidity in the equipment layer 1, and of course, the operation parameters are not limited to the above parameters, and the operation parameters include all relevant operation parameters in the equipment layer, so that the controller 23 can conveniently grasp more detailed operation state information and perform more deep and fine control.
Further, the first sensor 22 includes a temperature sensor, a humidity sensor, a wind speed sensor, a pressure sensor, and a differential pressure sensor. Of course, the first sensor 22 is not limited to the above-mentioned sensors, and any sensor capable of acquiring the above-mentioned operation parameters may be used.
And the controller 23 controls the on-off and the opening of each device in the equipment layer 1 according to the operation parameters and the instruction of the master station layer 4.
Further, the controller 23 is a DDC controller. The DDC controller (Direct Digital Control) is Direct Digital Control, utilizes a micro signal processor to execute various logic Control functions, and adopts the Digital Control function to realize all links from the acquisition, transmission, Control and the like of parameters.
The controller receives input signals from the sensors, from the contacts or other instruments, processes these signals according to a software program, and outputs signals to external devices that can be used to turn the machine on or off, open or close valves or dampers, or perform complex actions in a programmed manner.
The specific working process is that the controller collects real-time data through an analog input channel (AI) and a digital input channel (DI), converts an analog signal into a digital signal (A/D conversion) acceptable by a computer, then carries out operation according to a certain control rule, finally sends out a control signal, converts the digital signal into an analog signal (D/A conversion), and directly controls the operation of equipment through the analog output channel (AO) and the digital output channel (DO). The DDC controller is convenient to operate and high in accuracy.
The load monitoring terminal 24 monitors the electrical loads of the devices in the equipment layer 1. The load monitoring terminal 24 is a multifunctional power monitoring terminal, provides load, real-time voltage and current power information and accumulated energy utilization information, and is convenient for controlling the equipment layer 1 according to the change of the load so as to ensure efficient operation.
Meanwhile, the load monitoring terminal 24 is internally provided with a load modeling curve corresponding to the equipment layer 1, the equipment is not maintained in time after long-time operation, the starting speed operation load and the energy efficiency output ratio are influenced, the aging condition of the equipment is identified by comparing with the load characteristic curve at the initial stage of equipment installation, and maintenance or replacement is reminded in time.
Further, the electrical load monitored by the load monitoring terminal 24 includes three-phase current, three-phase voltage, active power, reactive power, time-sharing electric quantity and daily electric quantity.
Further, the terminal layer 2 further comprises a second sensor 25 arranged on the air conditioner terminal circulating device 15, wherein the second sensor 25 comprises a fan coil temperature controller and a temperature and humidity sensor so as to collect the fan coil temperature and the indoor temperature and humidity of the air conditioner terminal circulating device 15 and refine monitoring contents to each air conditioner terminal circulating device 15. Indoor humiture is suitable then the restriction the use of equipment layer 1 sets up the temperature range of fan coil temperature controller, avoids temperature regulation to hang down excessively, extravagant energy consumption.
Further, the second sensor 25 further includes a human body sensor to determine whether a person is present in the room where the air conditioner end circulation device 15 is located. Whether someone is in the induction room or not, the central air conditioner is automatically closed under the long-time unmanned condition, and during the working period, if someone enters, the air conditioner is automatically started to run, and the recording default mode is switched to, so that the energy is saved.
On one hand, the terminal layer 2 collects information such as the running state, real-time electrical parameters, temperature, humidity and wind speed of the equipment layer 1, diagnoses the load running condition and the energy efficiency level, and provides data support for peak regulation capability prediction; on the other hand, the terminal layer 2 is controlled by the regulation and control instruction issued by the master station layer 4, monitors the working operation condition of the equipment layer 1, receives the load scheduling curve of the master station layer 4, selects a reasonable control strategy according to the actual operation condition of the equipment layer 1, and performs linkage control on the equipment layer 1, so that the method does not cause great influence on the normal life of a user, and meets the requirements of ordered peak clipping, virtual peak regulation and demand response.
The communication layer 3 constructs a communication network between the terminal layer 2 and the master station layer 4, and performs data transmission and instruction transmission to realize communication connection.
Further, the communication layer 3 comprises any one or combination of a plurality of 485 interfaces, WIFI, GPRS, Ethernet and Lonworks, supports various wired and wireless communication interfaces, and is suitable for the requirements of data transmission of various building environments; and the data of the controller without remote function and the sensor are converted into a remote interface through a gateway and are uploaded to the master station layer 4.
The master station layer 4 is a virtual peak regulation master station, is connected with the power grid dispatching system 5, and regulates and controls the equipment layer 1 according to instructions of the power grid dispatching system 5. The instructions include peak shaving, frequency modulation, demand response, and the like. In this embodiment, the connection includes information interaction, instruction interaction, and the like.
The functions of the virtual peak regulation master station comprise virtual machine set optimization combination, strategy decomposition execution, effect statistic evaluation and the like, the load scheduling curve of the power grid scheduling system 5 is received, the peak regulation capacity of the public building is predicted, the regulation and control sequence of the equipment layer 1 is optimized, and regulation and control are implemented in order.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim.
Claims (7)
1. A central air-conditioning energy efficiency monitoring system is characterized by comprising a device layer (1), a terminal layer (2), a communication layer (3) and a master station layer (4),
the equipment layer (1) comprises a water chilling unit (11), a cooling water circulating device (12), a cooling tower circulating device (13), a chilled water circulating device (14) and an air conditioner tail end circulating device (15), wherein the water chilling unit (11), the cooling water circulating device (12) and the cooling tower circulating device (13) are connected in pairs, the water chilling unit (11) is connected with the air conditioner tail end circulating device (15), and the chilled water circulating device (14) is respectively connected with the water chilling unit (11) and the air conditioner tail end circulating device (15);
the terminal layer (2) collects data of the equipment layer (1) and transmits the data, and comprises a gateway (21) connected with the water chilling unit (11), first sensors (22) respectively arranged in all devices in the equipment layer (1), a controller (23) and a load monitoring terminal (24); the gateway (21) collects the running state of the water chilling unit (11), wherein the running state comprises the uploading rate of the water chilling unit (11); the first sensor (22) collects the operation parameters of each device in the equipment layer (1), wherein the operation parameters comprise the temperature of outlet and return water, the pressure of water flow, the wind speed of a wind inlet/return port, the temperature of air flow and the humidity in the equipment layer (1); the controller (23) controls the opening and closing of each device in the equipment layer (1) according to the operation parameters and the instruction of the master station layer (4); the load monitoring terminal (24) monitors the power load of each device in the equipment layer (1);
the communication layer (3) constructs a communication network between the terminal layer (2) and the master station layer (4) to transmit data and instructions and realize communication connection;
the main station layer (4) is a virtual peak regulation main station, is connected with the power grid dispatching system (5), and regulates and controls the equipment layer (1) according to instructions of the power grid dispatching system (5).
2. The central air-conditioning energy efficiency monitoring system according to claim 1, characterized in that the first sensor (22) comprises a temperature sensor, a humidity sensor, a wind speed sensor, a pressure sensor and a differential pressure sensor.
3. The central air-conditioning energy efficiency monitoring system according to claim 1, characterized in that the terminal layer (2) further comprises a second sensor (25) arranged on the air-conditioning end circulation device (15), and the second sensor (25) comprises a fan coil temperature controller and a temperature and humidity sensor so as to collect the fan coil temperature and the indoor temperature and humidity of the air-conditioning end circulation device (15).
4. The central air-conditioning energy efficiency monitoring system according to claim 3, characterized in that the second sensor (25) further comprises a human body induction sensor to judge whether a person is in a room where the air-conditioning end circulation device (15) is located.
5. The central air-conditioning energy efficiency monitoring system according to claim 1, characterized in that the controller (23) is a DDC controller.
6. The central air-conditioning energy efficiency monitoring system according to claim 1, characterized in that the electrical loads monitored by the load monitoring terminal (24) comprise three-phase current, three-phase voltage, active power, reactive power, time-sharing power and daily power.
7. The central air-conditioning energy efficiency monitoring system according to claim 1, characterized in that the communication layer (3) comprises any one or combination of 485 interfaces, WIFI, GPRS, Ethernet and Lonworks.
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| CN201922182851.3U CN211650649U (en) | 2019-12-09 | 2019-12-09 | Central air conditioning efficiency monitoring system |
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| CN201922182851.3U CN211650649U (en) | 2019-12-09 | 2019-12-09 | Central air conditioning efficiency monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946406A (en) * | 2021-03-24 | 2021-06-11 | 江苏金碧田***集成有限公司 | Air conditioner efficiency testing arrangement |
| CN114017900A (en) * | 2021-08-30 | 2022-02-08 | 贵州宝智达网络科技有限公司 | Cluster control technology based on WIFI-mesh ad hoc network central air conditioner |
-
2019
- 2019-12-09 CN CN201922182851.3U patent/CN211650649U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946406A (en) * | 2021-03-24 | 2021-06-11 | 江苏金碧田***集成有限公司 | Air conditioner efficiency testing arrangement |
| CN114017900A (en) * | 2021-08-30 | 2022-02-08 | 贵州宝智达网络科技有限公司 | Cluster control technology based on WIFI-mesh ad hoc network central air conditioner |
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