CN102997380B - 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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- CN102997380B CN102997380B CN201210573127.3A CN201210573127A CN102997380B CN 102997380 B CN102997380 B CN 102997380B CN 201210573127 A CN201210573127 A CN 201210573127A CN 102997380 B CN102997380 B CN 102997380B
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 42
- 238000013461 design Methods 0.000 claims abstract description 28
- 239000000498 cooling water Substances 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000011217 control strategy Methods 0.000 claims description 9
- 238000007619 statistical method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000007405 data analysis Methods 0.000 description 1
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- 238000005272 metallurgy Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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- 238000012800 visualization Methods 0.000 description 1
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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
Be conventionally used to the control of central air conditioner system, mainly by building control BA system to central air conditioner system equipment, comprise main frame, chilled water pump, cooling water pump, blower fan of cooling tower, the new blower fan of end, air processing machines etc. carry out centralized watch and on off control, only emphasize the controlling to equipment, and the complication system that air-conditioning system becomes when being multi-parameter, so traditional BA system cannot carry out comprehensive coordinated operation and the management of systematized energy source optimization to the machine room of air-conditioning system and end, that is, lack system optimization regulation and control air-conditioning system being carried out to energy-conservation aspect, its energy saving is poor.
And from Energy Saving Control angle, the mode mostly adopting PLC programmable logic controller (PLC) to add special pattern configuration software to the energy-saving control device of central air conditioner system equipment at present realizes the centralized Control to air-conditioning equipment.The defect 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 the application of concrete function, and need do the development of repetition, workload is large, and system engineering debugging is complicated, does not possess versatility and ductility.
Summary of the invention
Object of the present invention is exactly the above-mentioned defect that will overcome prior art, a kind of energy-saving control device for central air conditioner system is provided, its engineering adaptability and compatibility good, possess versatility and ductility, can comprehensively to central air conditioner system carry out coordinated operation and system energy source optimization management.
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 at least comprise cooling-water temperature sensor, environment humidity sensor, gas concentration sensor, differential pressure pickup, flow take into account electronic electric energy meter, also comprise the host computer and some slave computers that are made up of Centralized Monitoring industrial computer, described slave computer comprises the PLC be arranged in each device context energy-saving control cabinet; Described collection in worksite and metrology devices are connected with described PLC, and described PLC implements sampled signal input and control signal exports; Described PLC carries out data transmission by RS485 bus and host computer, and host computer is communicated with described PLC by RS485 bus, realizes carrying out centralized watch and control to each equipment of central air conditioner system; Wherein, host computer comprises engineering design module, engineer applied module and database, and described engineering design module and engineer applied module perform following Energy Saving Control step:
1) first described host computer initializes, and reads data and generate various device object and control strategy storehouse from database and various configuration file;
2) described engineering design module is according to the composition situation of equipment each in central air conditioning project project, the described various equipment of calling system;
3) described engineering design module is according to central air conditioning project project process condition, design 3D flow chart, and is saved in database;
4) described engineering design module is according to the control overflow of central air conditioning project project, selects corresponding control strategy storehouse;
5) described engineer applied module is converted to the parameters of system simultaneously by each data of RS485 bus reading PLC, forms situation, configuration communication parameter, and mapped by the device parameter in plc data and engineering design module according to PLC;
6) control signal that described engineer applied module exports is sent in the PLC of equipment by RS485 bus, and the long-range equipment to air-conditioning system carries out various supervision, control, operational management and statistical analysis, and the timing of equipment operational factor is stored in database.
2. the energy-saving control device for central air conditioner system according to claim 1, is characterized in that: wherein said slave computer employing model is the PLC product of CPU224XP.
The present invention is used for the advantage of energy-saving control device of central air conditioner system and good effect is: owing to have employed host computer and slave computer, slave computer arranges some PLC in each device context, host computer comprises engineering design module, engineer applied module and database, controlling and energy saving is taked to combine to air-conditioning system, complete on the basis to air-conditioning system equipment monitor and control, by the chilled water system of centralized optimization dynamic adjustments central air conditioner system, cooling water system and end wind system, air-conditioning system is made to realize Effec-tive Function, achieve air-conditioning system integration energy-conservation more than 20%.
Be described in detail with reference to accompanying drawing below in conjunction with embodiment.
Accompanying drawing explanation
Fig. 1 is the present invention for the host computer of the energy-saving control device of central air conditioner system and slave computer communication structure figure;
Fig. 2 is that the present invention is for air-conditioning duct schematic diagram in the embodiment of the energy-saving control device of central air conditioner system;
Fig. 3 is that the present invention is for slave computer circuit theory diagrams in the embodiment of the energy-saving control device of central air conditioner system.
Detailed description of the invention
The embodiment of the present invention for the energy-saving control device of central air conditioner system is described 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 the host computer 1 of Centralized Monitoring industrial computer formation, some slave computers 3 and collection in worksite and metrology devices.
Host computer 1 can communicate with the PLC of any support RS485 bus, modbus agreement.Slave computer 3 comprises the PLC be arranged in each device context energy-saving control cabinet, and employing model is the PLC product of CPU224XP.Collection in worksite and metrology devices at least comprise cooling-water temperature sensor, environment humidity sensor, gas concentration sensor, differential pressure pickup, flow take into account electronic electric energy meter.Collection in worksite and metrology devices are connected with PLC, and PLC implements sampled signal input and control signal exports.PLC carries out data transmission by RS485 bus 2 and host computer 1, and host computer 1 carries out centralized watch and control by RS485 bus 2 to each equipment, 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 water circulating pump project for certain mansion central hollow tuned plate.In conjunction with reference Fig. 2 to Fig. 3, slave computer 3 changes Circulating Pump System for Siemens CPU224XP to certain mansion central hollow tuned plate and controls.
With reference to Fig. 2, in embodiment, air-conditioning duct is provided with water return pipeline, supply channel, some cooling water pumps, chilled water pump and some air-conditioner hosts, and some plates change coolant pump and some plates change refrigerating water pump, become the equipment entering centralized watch and control.
With reference to Fig. 3, control the operation of the said equipment at the PLC of each device context, comprise 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, be connected with 1#-4# sensor respectively, 0.0,0.1,0.2,0.3,0.4 respectively end be control end, be connected with 12KA with control relay 1KA, 2KA, 13KA with " long-range/on the spot " control button SM respectively.
Host computer 1 adopts OO Programming, the various watch-dogs of abstract package, comprise 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., formed enrich perfect device object storehouse.Control strategy storehouse has " manual on the spot ", " remote manual " and " remote auto " various control strategy, implements Energy Saving Control to the equipment of monitoring.And the such as timing such as temperature, flow of equipment operational factor is stored in database.
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 displaying controlled system vividly.To different air-conditioning systems without the need to writing code and function, only need the interpolation carrying out device object, association and mapping, can complete the typical apply to different air-conditioning project, solve the problem for different air-conditioning system versatility and autgmentability.
In the embodiment of the energy-saving control device for central air conditioner system provided by the invention, host computer 1 comprises engineering design module, engineer applied module and database.Engineering design module and engineer applied module carry out centralized watch and control by RS485 bus 2 to above-mentioned each equipment, and the Energy Saving Control step of execution is:
1) first host computer 1 initializes, and reads data and generate various device object and control strategy storehouse from database and various configuration file.
2) engineering design module according to the composition situation of equipment each in central air conditioning project project, the various equipment of calling system.
3) engineering design module, according to central air conditioning project project process condition, designs 3D flow chart, and is saved in database.
4) engineering design module, according to the control overflow of central air conditioning project project, selects corresponding control strategy storehouse.
5) engineer applied module is converted to the parameters of system simultaneously by each data that RS485 bus 2 reads PLC, forms situation, configuration communication parameter, and mapped by the device parameter in plc data and engineering design module according to PLC;
6) control signal of engineer applied module output, comprise manual operation and the automatic adjustment operation of system of user, be sent in the PLC of equipment by RS485 bus 2, the long-range equipment to air-conditioning system carries out various supervision, control, operational management and statistical analysis, and the timing of equipment operational factor is stored in database.
After engineering design module has been run, by running engineer applied module user by user interface, the long-range equipment to air-conditioning system carries out the operations such as various supervision, control, statistical analysis and operational management, and all functions relating to control perform by each PLC of slave computer 3.
Composition graphs 2 and Fig. 3, in 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 be implemented as follows the equipment of monitoring:
(1) invocation facility: the central air-conditioning configuration device and the data that get project, No. 1 to No. 33 the 75KW plates comprised in air-conditioning duct change circulating cooling pump and No. 4 to No. 63 45KW plates change circulating frozen pump, and some cooling-water temperature sensors etc.
(2) 3D flow chart is designed: 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: with in tree list mode display system equipment, No. 4 chilled water pumps in the air-conditioning duct such as, recalled in figure, select its controling parameters, comprise set of frequency value upper and lower limit, accumulative energy consumption and sensor multiplying power etc.
(4) Parameter Mapping: engineer applied module is converted to the parameters of system by each data that RS485 bus 2 reads PLC simultaneously, forms situation according to PLC, configuration communication parameter, and is mapped by the device parameter in plc data and engineering design module.
(5) system monitoring: the control signal that engineer applied module exports is sent in the PLC of equipment by RS485 bus (2), with " manual on the spot ", " remote manual " and " remote auto " various ways, various supervision, control, operational management and statistical analysis are carried out to the equipment of above-mentioned air-conditioning system, and the timing of equipment operational factor is stored in database.Comprise:
Energy consumption statistic: the energy consumption service condition of system equipment being carried out to power frequency and frequency conversion is added up.
Data analysis: the historical trend situation of checking system operational parameters on a time period, helps user to find and Problems existing in resolution system.
Record queries: retrieval facility failure logging and user operation records situation.
User management: multi-stage user rights management, ensures equipment operating security.
The embodiment of the energy-saving control device for central air conditioner system provided by the invention, host computer 1 regulates dynamic adjustments air-conditioning system chilled water and cooling water system by centralized optimization, make air-conditioning system Effec-tive Function, improve air-conditioning efficiency level, on average realize air conditioner system energy saving more than 20%.Overcome traditional B AS or a DCS system Focus Control, do not pay close attention to energy-conservation shortcoming.
The present invention is that central air conditioner system provides a motor device centralized watch, control and energy efficiency management platform, also be adapted to industrial environment as industries such as metallurgy, chemical industry, building materials, the energy, urban pipe networks simultaneously, Centralized Monitoring and the energy efficiency management of all kinds of motor device in the steam generator system to industrial processes, air supplying and exhausting system, pumping station system and air compression station system can be realized.
Embodiment recited above is only be described the preferred embodiment of the present invention, not limits the spirit and scope of the present invention.Under the prerequisite not departing from design concept of the present invention; the various modification that this area ordinary person makes technical scheme of the present invention and improvement; all should drop into protection scope of the present invention, the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (2)
1. the energy-saving control device for central air conditioner system, comprise collection in worksite and metrology devices, collection in worksite and metrology devices at least comprise cooling-water temperature sensor, environment 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 some slave computers (3) that are made up of Centralized Monitoring industrial computer, described slave computer comprises the PLC be arranged in each device context energy-saving control cabinet; Described collection in worksite and metrology devices are connected with described PLC, and described PLC implements sampled signal input and control signal exports; Described PLC carries out data transmission by RS485 bus (2) and host computer (1), host computer (1) is communicated with described PLC by RS485 bus (2), realizes carrying out centralized watch and control to each equipment of central air conditioner system; Wherein, host computer (1) comprises engineering design module, engineer applied module and database, and described engineering design module and engineer applied module perform following Energy Saving Control step:
1) first described host computer initializes, and reads data and generate various device object and control strategy storehouse from the configuration file of database;
2) described engineering design module is according to the composition situation of equipment each in central air conditioning project project, the described various equipment of calling system;
3) described engineering design module is according to central air conditioning project project process condition, design 3D flow chart, and is saved in database;
4) described engineering design module is according to the control overflow of central air conditioning project project, selects corresponding control strategy storehouse;
5) described engineer applied module is converted to the parameters of system simultaneously by each data of RS485 bus (2) reading PLC, situation is formed according to PLC, configuration communication parameter, and the device parameter in plc data and engineering design module is mapped;
6) control signal that described engineer applied module exports is sent in the PLC of equipment by RS485 bus (2), the long-range equipment to air-conditioning system carries out various supervision, control, operational management and statistical analysis, and the timing of equipment operational factor is stored in database.
2. the energy-saving control device for central air conditioner system according to claim 1, is characterized in that: wherein said slave computer (3) employing model is the PLC product of CPU224XP.
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| CN201210573127.3A CN102997380B (en) | 2012-12-25 | 2012-12-25 | Energy-saving control device for central air-conditioning system |
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| CN201210573127.3A CN102997380B (en) | 2012-12-25 | 2012-12-25 | Energy-saving control device for central air-conditioning system |
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| CN102997380B true CN102997380B (en) | 2015-06-03 |
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| CN103533099B (en) * | 2013-10-14 | 2018-09-25 | 威海麦科电气技术有限公司 | Frequency converter and its address mapping method under MODBUS communications protocol |
| CN105258286B (en) * | 2015-10-16 | 2018-11-30 | 珠海格力电器股份有限公司 | Central air-conditioning dispatches system and its working method |
| 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 |
| CN106403080B (en) * | 2016-09-28 | 2019-03-22 | 珠海格力电器股份有限公司 | A kind of cold station system of central air-conditioning and control method |
| CN106338131A (en) * | 2016-09-30 | 2017-01-18 | 珠海格力电器股份有限公司 | Central air-conditioning system |
| 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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| CN2802332Y (en) * | 2005-06-10 | 2006-08-02 | 黄真银 | Digital control energy-saving system of central air conditioner |
| CN100407652C (en) * | 2005-11-16 | 2008-07-30 | 珠海格力电器股份有限公司 | Method for remote monitoring and group control of central air conditioning unit |
| CN201377875Y (en) * | 2009-04-27 | 2010-01-06 | 西安工程大学 | Visual monitoring system for evaporative cooling air conditioner |
| CN101581933A (en) * | 2009-05-12 | 2009-11-18 | 深圳市中兴新地通信器材有限公司 | Multi-heat dissipation device intelligent linkage machine room energy-saving control system |
| CN201796284U (en) * | 2010-09-20 | 2011-04-13 | 扬州新海电气自动化有限公司 | Motor integrated module for controlling and protecting on and off of electric equipment |
| CN202040938U (en) * | 2011-01-17 | 2011-11-16 | 福建成信绿集成有限公司 | Central air conditioning equipment energy consumption monitoring and energy conservation diagnosis system |
| CN202563307U (en) * | 2012-02-28 | 2012-11-28 | 周旺发 | Energy-saving environmental protection control system of intelligent hotel |
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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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Effective date of registration: 20231218 Granted publication date: 20150603 |