CN102997380A - Energy-saving control device for central air-conditioning system - Google Patents
Energy-saving control device for central air-conditioning system Download PDFInfo
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- CN102997380A CN102997380A CN2012105731273A CN201210573127A CN102997380A CN 102997380 A CN102997380 A CN 102997380A CN 2012105731273 A CN2012105731273 A CN 2012105731273A CN 201210573127 A CN201210573127 A CN 201210573127A CN 102997380 A CN102997380 A CN 102997380A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 42
- 238000013461 design Methods 0.000 claims abstract description 29
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000011217 control strategy Methods 0.000 claims description 9
- 238000007619 statistical method Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
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- 238000004134 energy conservation Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
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Abstract
The invention provides an energy-saving control device for a central air-conditioning system which is composed of an upper computer and a plurality of lower computers. The upper computer is composed of an engineering design module, an engineering application module and a database. The lower computers comprise programmable logic controllers (PLCs) which are arranged on various device sites and perform data transmission with the upper computer through recommended standard (RS) 485 bus communication, and the upper computer intensively monitors and controls all devices through a RS 485 bus. The invention further provides energy-saving control steps for the central air-conditioning system. The energy-saving control device and steps have the advantages that the upper computer and the lower computers are adopted, the lower computers are provided with the plurality of PLCs on all device sites, the upper computer comprises the engineering design module, the engineering application module and the database, combining of controlling and energy saving are adopted for the air-conditioning system, a chilled water system and a cooling water system of the central air-conditioning system are intensively optimized and dynamically adjusted on the basis of completing monitoring and controlling on the air-conditioning system, the air-conditioning system is led to achieve efficient operation, and integrated energy saving of the air-conditioning system can be saved by above 20%.
Description
Technical field
The present invention relates to field of energy-saving technology, particularly a kind of energy-saving control device for central air conditioner system.
Background technology
Tradition is used for the control of central air conditioner system, mainly be to central air conditioner system equipment by building control BA system, comprise main frame, chilled water pump, cooling water pump, blower fan of cooling tower, terminal new blower fan, air processing machines etc. are concentrated and are monitored and on off control, only emphasize controlled to equipment, and air-conditioning system is the time complication system that becomes of multi-parameter, so traditional BA system can't carry out comprehensive coordinated operation and the management of systematized energy source optimization to machine room and the end of air-conditioning system, that is to say, lack the system optimization regulation and control that air-conditioning system is carried out energy-conservation aspect, its energy saving is poor.
And from the Energy Saving Control angle, the present mode that mostly adopts the PLC programmable logic controller (PLC) to add the special pattern configuration software to the energy-saving control device of central air conditioner system equipment realizes the centralized Control to air-conditioning equipment.The defective of this mode is, one, and the PLC of different brands must support the use with specific Graphics Configuration System Used, engineering adaptability and poor compatibility; Its two, each engineering project needs to define concrete function to be used, and need do the development of repetition, workload is large, the system engineering debugging is complicated, does not possess versatility and ductility.
Summary of the invention
Purpose of the present invention is exactly the defects that will overcome prior art, a kind of energy-saving control device for central air conditioner system is provided, its engineering adaptability and compatible good possesses versatility and ductility, can carry out the energy source optimization management of coordinated operation and system to central air conditioner system comprehensively.
For achieving the above object, energy-saving control device for central air conditioner system provided by the invention, comprise collection in worksite and metrology devices, collection in worksite and metrology devices comprise that at least cooling-water temperature sensor, ambient temperature and humidity sensor, gas concentration sensor, differential pressure pickup, flow take into account electronic electric energy meter, also comprise the host computer and the some slave computers that are become with industrial calculation mechanism by Centralized Monitoring, described slave computer comprises the PLC that is installed in each device context energy-saving control cabinet; Described collection in worksite and metrology devices link to each other with described PLC, and described PLC implements sampled signal input and control signal output; Described PLC carries out transfer of data by RS485 bus and host computer, and host computer communicates by RS485 bus and described PLC, realizes each equipment of central air conditioner system is concentrated monitoring and controlling; Wherein, host computer comprises engineering design module, engineering application module and database, and described engineering design module and engineering application module are carried out following Energy Saving Control step:
1) described host computer at first initializes, reading out data and generate the various device object and the control strategy storehouse from database and various configuration file;
2) described engineering design module is according to the composition situation of each equipment in the central air conditioning project project, the described various device of calling system;
3) described engineering design module designs the 3D flow chart, and is saved in the database according to central air conditioning project project process condition;
4) described engineering design module is selected corresponding control strategy storehouse according to the control requirement of central air conditioning project project;
5) described engineering application module each data of reading PLC by the RS485 bus are converted to the parameters of system simultaneously, consist of situation according to PLC, the configuration communication parameter, and the device parameter in plc data and the engineering design module shone upon;
6) control signal of described engineering application module output sends to by the RS485 bus among the PLC of equipment, and long-range equipment to air-conditioning system carries out various supervision, control, operational management and statistical analysis, and the equipment operational factor is regularly stored in the database.
2. the energy-saving control device for central air conditioner system according to claim 1 is characterized in that: it is the PLC product of CPU224XP that wherein said slave computer adopts model.
Advantage and good effect that the present invention is used for the energy-saving control device of central air conditioner system are: owing to adopted host computer and slave computer, slave computer arranges some PLC in each device context, host computer comprises the engineering design module, engineering application module and database, take controlled and energy saving to combine to air-conditioning system, on the basis of finishing air-conditioning system equipment monitor and control, by concentrating the chilled water system of optimizing the dynamic adjustments central air conditioner system, cooling water system and terminal wind system, so that air-conditioning system realizes efficient operation, realized that the air-conditioning system integration is energy-conservation more than 20%.
Be elaborated with reference to accompanying drawing below in conjunction with embodiment.
Description of drawings
Fig. 1 is host computer and the slave computer communication structure figure of the present invention's energy-saving control device of being used for central air conditioner system;
Fig. 2 is the embodiment air-conditioning duct schematic diagram of the present invention's energy-saving control device of being used for central air conditioner system;
Fig. 3 is the embodiment slave computer circuit theory diagrams of the present invention's energy-saving control device of being used for central air conditioner system.
The specific embodiment
Describe the embodiment that the present invention is used for the energy-saving control device of central air conditioner system in detail below in conjunction with accompanying drawing.
With reference to Fig. 1, the energy-saving control device for central air conditioner system provided by the invention comprises host computer 1, some slave computers 3 and collection in worksite and metrology devices that Centralized Monitoring becomes with industrial calculation mechanism.
Host computer 1 can communicate with the PLC of any support RS485 bus, modbus agreement.Slave computer 3 comprises the PLC that is installed in each device context energy-saving control cabinet, and adopting model is the PLC product of CPU224XP.Collection in worksite and metrology devices comprise that at least cooling-water temperature sensor, ambient temperature and humidity sensor, gas concentration sensor, differential pressure pickup, flow take into account electronic electric energy meter.Collection in worksite and metrology devices link to each other with PLC, and PLC implements sampled signal input and control signal output.PLC carries out transfer of data by RS485 bus 2 and host computer 1, and host computer 1 is concentrated monitoring and controlling by 2 pairs of each equipment of RS485 bus, solves traditional " PLC+ special pattern configuration software mode " compatibility and the problem of autgmentability.
The embodiment of the energy-saving control device for central air conditioner system provided by the invention changes the water circulating pump project for certain mansion central hollow tuned plate.In conjunction with reference to Fig. 2 to Fig. 3, slave computer 3 changes Circulating Pump System with Siemens CPU224XP to certain mansion central hollow tuned plate and is controlled to be example.
With reference to Fig. 2, air-conditioning duct is provided with water return pipeline, supply channel, some cooling water pumps, chilled water pump and some air-conditioner hosts among the embodiment, and some plates change coolant pump and some plates change refrigerating water pump, becomes the equipment of concentrating monitoring and controlling that enters.
With reference to Fig. 3, the operation at the PLC of each device context control the said equipment comprises the sampling input of some sensors and the output of control signal.Wherein, A+ and A-, B+ and B-, C+ and C-, D+ and D-are the sampling input of sensor, link to each other with the 1#-4# sensor respectively, 0.0,0.1,0.2,0.3,0.4 each end is for control end, link to each other with control relay 1KA, 2KA, 13KA and 12KA with " long-range/on the spot " control button SM respectively.
Host computer 1 adopts OO Programming, the various watch-dogs of abstract package, comprise that cooling water pump, chilled water pump, plate change coolant pump, plate changes refrigerating water pump cooling-water temperature sensor, current differential pressure pickup, flowmeter and electronic electric energy meter etc., form and enrich perfect device object storehouse.The control strategy storehouse has " manual on the spot ", " remote manual " and " remote auto " various control strategy, and the equipment of monitoring is implemented Energy Saving Control.And the equipment operational factor regularly stored in the database such as temperature, flow etc.
Host computer 1 adopts efficiently, visualization toolkit fast, writes various kinds of equipment object and various monitoring display window, the real time execution situation of clear lively displaying controlled system.Different air-conditioning systems be need not to write code and function, only need to carry out the interpolation of device object, related and mapping, the typical case that can finish different air-conditioning projects uses, and solves the problem for different air-conditioning system versatilities and autgmentability.
At the embodiment of the energy-saving control device for central air conditioner system provided by the invention, host computer 1 comprises engineering design module, engineering application module and database.Engineering design module and engineering application module are concentrated monitoring and controlling by 2 pairs of above-mentioned each equipment of RS485 bus, and the Energy Saving Control step of execution is:
1) host computer 1 at first initializes, reading out data and generate the various device object and the control strategy storehouse from database and various configuration file.
2) engineering design module is according to the composition situation of each equipment in the central air conditioning project project, the various device of calling system.
3) engineering design module designs the 3D flow chart, and is saved in the database according to central air conditioning project project process condition.
4) engineering design module is selected corresponding control strategy storehouse according to the control requirement of central air conditioning project project.
5) engineering application module each data of reading PLC by RS485 bus 2 are converted to the parameters of system simultaneously, consist of situation according to PLC, the configuration communication parameter, and the device parameter in plc data and the engineering design module shone upon;
6) control signal of engineering application module output, the automatic Adjustment operation of manual operation and system that comprises the user, send to by RS485 bus 2 among the PLC of equipment, long-range equipment to air-conditioning system carries out various supervision, control, operational management and statistical analysis, and the equipment operational factor is regularly stored in the database.
After the operation of engineering design module is finished, can pass through user interface by operation engineering application module user, long-range equipment to air-conditioning system carries out the operations such as various supervision, control, statistical analysis and operational management, and all relate to the function of control and carry out by slave computer 3 each PLC.
In conjunction with Fig. 2 and Fig. 3, at the embodiment of the energy-saving control device for central air conditioner system provided by the invention, host computer 1 specifically comprises the Energy Saving Control that the equipment to monitoring is implemented as follows:
(1) invocation facility: get access to central air-conditioning configuration device and the data of project, comprise that No. 1 to No. 33 75KW plates in the air-conditioning duct change the circulating cooling pump and No. 4 to No. 63 45KW plates change the circulating frozen pump, and some cooling-water temperature sensors etc.
(2) design 3D flow chart: according to the actual conditions of air-conditioning duct, design corresponding 3D schematic flow sheet window, the real time execution situation of clear, directly perceived and lively displaying custom system.
(3) select control strategy: in tree list mode display system equipment, No. 4 chilled water pumps in the air-conditioning duct that for example accesses among the figure are selected its control parameter, comprise set of frequency value upper and lower limit, accumulative total energy consumption and sensor multiplying power etc.
(4) Parameter Mapping: each data that the engineering application module reads PLC by RS485 bus 2 are converted to the parameters of system simultaneously, consist of situation according to PLC, the configuration communication parameter, and the device parameter in plc data and the engineering design module shone upon.
(5) system monitoring: the control signal of engineering application module output sends among the PLC of equipment by RS485 bus (2), the equipment of above-mentioned air-conditioning system is carried out various supervision, control, operational management and statistical analysis, and the equipment operational factor is regularly stored in the database with " manual on the spot ", " remote manual " and " remote auto " various ways.Comprise:
Energy consumption statistic: the energy consumption operating position of system equipment being carried out power frequency and frequency conversion is added up.
Data analysis: check on a time period the historical trend situation of system operational parameters, help the problem that exists in user's discovery and the resolution system.
Record queries: retrieval facility failure logging and user operation records situation.
User management: the multi-stage user rights management guarantees the equipment operating security.
The embodiment of the energy-saving control device for central air conditioner system provided by the invention, host computer 1 is regulated dynamic adjustments air-conditioning system chilled water and cooling water system by concentrating to optimize, so that air-conditioning system is efficiently moved, improve air-conditioning efficiency level, realize that on average air conditioner system energy saving is more than 20%.Overcome traditional B AS or a DCS system Focus Control, do not paid close attention to energy-conservation shortcoming.
The present invention concentrates supervision, control and energy efficiency management platform for central air conditioner system provides a motor device, simultaneously also be adapted to industrial environment such as industries such as metallurgy, chemical industry, building materials, the energy, urban pipe networks, can realize Centralized Monitoring and the energy efficiency management of all kinds of motor devices in steam generator system, air supplying and exhausting system, pumping station system and the air compression station system to industrial processes.
Embodiment recited above is described preferred embodiment of the present invention, is not that the spirit and scope of the present invention are limited.Under the prerequisite that does not break away from design concept of the present invention; various modification and improvement that this area ordinary person makes technical scheme of the present invention; all should drop into protection scope of the present invention, the technology contents that the present invention asks for protection all is documented in claims.
Claims (2)
1. energy-saving control device that is used for central air conditioner system, comprise collection in worksite and metrology devices, collection in worksite and metrology devices comprise that at least cooling-water temperature sensor, ambient temperature and humidity sensor, gas concentration sensor, differential pressure pickup, flow take into account electronic electric energy meter, it is characterized in that: also comprise the host computer (1) and the some slave computers (3) that are become with industrial calculation mechanism by Centralized Monitoring, described slave computer comprises the PLC that is installed in each device context energy-saving control cabinet; Described collection in worksite and metrology devices link to each other with described PLC, and described PLC implements sampled signal input and control signal output; Described PLC carries out transfer of data by RS485 bus (3) and host computer (1), and host computer (1) communicates with described PLC by RS485 bus (2), realizes each equipment of central air conditioner system is concentrated monitoring and controlling; Wherein, host computer (1) comprises engineering design module, engineering application module and database, and described engineering design module and engineering application module are carried out following Energy Saving Control step:
1) described host computer at first initializes, reading out data and generate the various device object and the control strategy storehouse from database and various configuration file;
2) described engineering design module is according to the composition situation of each equipment in the central air conditioning project project, the described various device of calling system;
3) described engineering design module designs the 3D flow chart, and is saved in the database according to central air conditioning project project process condition;
4) described engineering design module is selected corresponding control strategy storehouse according to the control requirement of central air conditioning project project;
5) described engineering application module each data of reading PLC by RS485 bus (2) are converted to the parameters of system simultaneously, consist of situation according to PLC, the configuration communication parameter, and the device parameter in plc data and the engineering design module shone upon;
6) control signal of described engineering application module output sends among the PLC of equipment by RS485 bus (2), long-range equipment to air-conditioning system carries out various supervision, control, operational management and statistical analysis, and the equipment operational factor is regularly stored in the database.
2. the energy-saving control device for central air conditioner system according to claim 1 is characterized in that: it is the PLC product of CPU224XP that wherein said slave computer (3) adopts model.
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Cited By (7)
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| CN105258286A (en) * | 2015-10-16 | 2016-01-20 | 珠海格力电器股份有限公司 | Dispatching system for central air conditioners and working method for dispatching system |
| CN106091394A (en) * | 2016-06-29 | 2016-11-09 | 无锡锡能锅炉有限公司 | A kind of control technique of boiler combustion process |
| CN106127307A (en) * | 2016-07-01 | 2016-11-16 | 复旦大学 | A kind of control method of campus based on energy consumption strategy intelligent power equipment |
| CN106338131A (en) * | 2016-09-30 | 2017-01-18 | 珠海格力电器股份有限公司 | Central air-conditioning system |
| CN106403080A (en) * | 2016-09-28 | 2017-02-15 | 珠海格力电器股份有限公司 | Central air conditioner cold station system and control method |
| CN108386962A (en) * | 2018-05-04 | 2018-08-10 | 苏州科技大学 | A kind of central air-conditioning energy monitoring system and its working method |
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| CN102997380B (en) | 2015-06-03 |
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Address after: 100093 Beijing City, Haidian District Sijiqing Zhen Bei Xin Zhuang Bei soft Shuangxin Kechuang West Garden Building 5 Patentee after: Beijing Luyuan Jingneng Energy Technology Co.,Ltd. Patentee after: Zhang Haixin Patentee after: Wu Jie Address before: 100195, Beijing, Haidian District North Village Road, No. 25, static core garden, block F, 1 Patentee before: BEIJING HUIDESHENG ENERGY-SAVING TECHNOLOGY Co.,Ltd. Patentee before: Zhang Haixin Patentee before: Wu Jie |
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