CN104534617B - Cold source centralized digital control method based on energy consumption monitoring - Google Patents

Cold source centralized digital control method based on energy consumption monitoring Download PDF

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Publication number
CN104534617B
CN104534617B CN201410743804.0A CN201410743804A CN104534617B CN 104534617 B CN104534617 B CN 104534617B CN 201410743804 A CN201410743804 A CN 201410743804A CN 104534617 B CN104534617 B CN 104534617B
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China
Prior art keywords
temperature
energy consumption
cold source
water pump
water
Prior art date
Application number
CN201410743804.0A
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Chinese (zh)
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CN104534617A (en
Inventor
王春杰
王强
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北京方胜有成科技股份有限公司
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Publication of CN104534617A publication Critical patent/CN104534617A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/20Humidity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • F24F2110/12Temperature of the outside air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/20Humidity
    • F24F2110/22Humidity of the outside air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/40Pressure, e.g. wind pressure

Abstract

The invention discloses a cold source centralized digital control method based on energy consumption monitoring. The cold source centralized digital control method based on energy consumption monitoring comprises the following steps that a, real-time monitoring is conducted on power utilization, water utilization, the cooling quantity, the temperature, the pressure and the equipment state of a cold source system of a central air conditioner; b, energy consumption data and system state data collected in the step a are summarized, real-time refrigerating efficiency of the cold source system is calculated according to operating power parameters of a water chilling unit, a chilled water pump, a cooling water pump and a cooling tower fan in the system and the refrigerating capacity of the water chilling unit, forecast energy consumption data at present are obtained through forecasting according to outdoor temperature and humidity parameters at present, indoor temperature and humidity parameters at present and a load forecast model, the forecast energy consumption data and the energy consumption data which are actually monitored are compared, problems existing in the use process of a refrigerating system are found, and an optimized operation control strategy of the cold source system is formed; c, the optimized operation control strategy formed in the step b is conducted, and optimized operation control is achieved through a direct digital controller and an electrically operated valve connected with the direct digital controller.

Description

A kind of low-temperature receiver based on energy consumption monitoring concentrates digital control method
Technical field
The present invention relates to energy-conserving and environment-protective field, concentrates numeral control in particular to a kind of low-temperature receiver based on energy consumption monitoring Method processed.
Background technology
Central air-conditioning is the maximum unit of power consumption in heavy construction, and in total electricity bill expenditure, only central air-conditioning just accounts for 60% or so, what central air conditioner system power consumption was maximum is main frame, and main frame accounts for more than 60% in the middle of whole air conditioning system, circulation System accounts for 40% of whole system power consumption or so, therefore how central air-conditioning economizes on electricity, how to improve operational efficiency and just seem outstanding Which is important.
Traditional central air-conditioning energy mainly adds intelligence control system to realize using the frequency conversion of water pump system, in central hollow In adjusting system, main frame, water pump, the entery and delivery port of cooling tower arrange temperature, pressure transducer, and sensor output signal accesses center Monitoring computer, using PLC programmable controllers, PLC controls refrigeration host computer by the communication interface of refrigeration host computer Main Control Tank, PLC connects the working condition of control cooling water pump, chilled water pump and cooling blower, PLC and centralized monitoring computer by wire Both-way communication is realized by bus, be it is characterized in that:Comprehensive adjustment central air-conditioning freezing water, the flow of cooling water, temperature and refrigeration The operating load ratio of main frame compressor, reaches the optimum state of central air-conditioning economical operation.
But, because effectively monitoring and analysis are not carried out to central air conditioning energy consumption, causing reducing energy consumption does not have Situations such as specific aim, not good energy-saving effect.
The content of the invention
The present invention provides a kind of low-temperature receiver based on energy consumption monitoring and concentrates digital control method, to improve central air conditioner cold source The cooling and energy conserving effect of system.
To reach above-mentioned purpose, the invention provides a kind of low-temperature receiver based on energy consumption monitoring concentrates digital control method, bag Include following steps:
A, electricity consumption to central air conditioner cold source system, carries out real-time monitoring with water, cold, temperature, pressure, equipment state, Specifically include:By being arranged on the electric power acquisition terminal monitoring of low-temperature receiver switchgear house, gathering the electricity consumption ginseng of cold, water pump, cooling tower Number and power consumption;The water consumption of cold source system is monitored, is gathered by being arranged on the tap water acquisition terminal of refrigeration plant water pipe; By the temperature that is arranged on chilled water, cooling water system pipeline, pressure sensing terminal monitoring, the temperature of collection cold source system and Pressure parameter;By being disposed in the outdoor the temperature with the temperature and humidity sensing terminal monitoring, collection outdoor and interior of indoor setting position Humidity parameter;And monitoring chilled water pump frequency manually, auto state, chilled water pump start-stop is long-range, state on the spot, chilled water pump Running status, fault alarm;
B, the energy consumption data gathered in step a, system state data are collected, according to the handpiece Water Chilling Units in system, Chilled water pump, cooling water pump, the operation power parameter of blower fan of cooling tower, the refrigerating capacity of handpiece Water Chilling Units, calculate cold source system Real-time refrigerating efficiency, and obtained according to current outdoor temperature humidity parameter and indoor temperature and humidity parameter and load forecasting model prediction Current prediction of energy consumption data, energy consumption data of the prediction of energy consumption data with actual monitoring is contrasted, it is found that refrigeration system makes Problem with, forms the optimization operation control strategy of cold source system, wherein, the load forecasting model is obtained in the following way :Statistics under different outdoor temperature humidity parameters and indoor temperature degree Parameter Conditions, per when, daily, monthly, annual cold source system Energy consumption data, the same period or chain rate analysis are carried out to the energy consumption of cold source system, obtain building actual load with it is outdoor it is each it is meteorological will Related law between element and end load characteristic, and historical data Load Forecast Algorithm is repaiied according to the related law Just, obtain load forecasting model;
The optimization formed in step b is run control strategy by c, by direct digital controller and coupled electronic Valve realizes optimization operation control.
Further, the direct digital controller is separately positioned on main frame, cooling water pump, cooling tower position.
Further, said method is further comprising the steps of:
The energy consumption data gathered in step a, system state data are carried out collecting forming form and analysis report, while with Historical data carries out contrast statistics and draws energy-saving effect, pushes, is presented to related personnel.
Further, the chilled water pump running status includes the converting operation of chilled water pump, bypass operation, stops.
Further, when return water temperature reaches the setting value upper limit, handpiece Water Chilling Units automatic is set when return water temperature reaches During definite value lower limit, handpiece Water Chilling Units autostop, while carrying out chain with peripheral equipment, first opens electrodynamic valve, again during system start-up Cooling water pump is opened, cooling tower is then turned on, is finally opened handpiece Water Chilling Units, first stopped handpiece Water Chilling Units during shutdown, stop cooling tower again, Stop cooling water pump again, finally close electrodynamic valve;When there is multiple stage handpiece Water Chilling Units to run, system is automatically selected according to return water temperature Start number of units, is switched over automatically, wherein, cold source system automatically selects use time when opened handpiece Water Chilling Units are selected Less handpiece Water Chilling Units operation.
Further, said method also includes:
Low temperature, low voltage difference, low discharge protection are provided with to chilled water system;And/or
High temperature, low discharge protection are provided with to cooling water system;And/or
Open-phase protection, overvoltage protection, overcurrent protection, low-voltage protection, output short circuit protection, ground connection are carried out to power supply Error protection;And/or
When device fails, frequency conversion, bypass loop automatic switching function are realized by switch board, and is automatically engaged standby Use equipment;And/or
Fault alarm, bitcom failure, technological parameter early warning and alarming function are arranged to cooling water system equipment, while base Warning priority is set in warning menace level, is monitored automatically various classifications and is reported to the police, the corresponding classification of failure includes general report Alert, pre-alarm, important warning etc., and corresponding alarm point is shown on picture, automatic spring warning relevant information.
The present invention distinguishes central air conditioner system energy waste and the energy by energy consumption monitoring based on energy consumption supervisory systems The service efficiency low time period, by efficiency diagnostic analysiss Producing reason, carried out by concentrating the application of digital control technology Targetedly energy-conservation rectification, while make amount of energy saving it is measurable, visualization.Make energy consumption monitoring, concentrate number by our work Word control technology and energy efficiency management perfect adaptation.The present invention is in terms of air-conditioning energy consumption running optimizatin, daily management optimization etc. Carry out energy efficiency supervision and improvement so that the application of technology more scientific and preciseness.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 concentrates digital control method flow chart for the low-temperature receiver based on energy consumption monitoring of one embodiment of the invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not paid Embodiment, belongs to the scope of protection of the invention.
Fig. 1 concentrates digital control method flow chart for the low-temperature receiver based on energy consumption monitoring of one embodiment of the invention.As schemed Shown, the low-temperature receiver concentrates digital control method to comprise the following steps:
A, electricity consumption to central air conditioner cold source system, carries out real-time monitoring with water, cold, temperature, pressure, equipment state, Specifically include:By being arranged on the electric power acquisition terminal monitoring of low-temperature receiver switchgear house, gathering the electricity consumption ginseng of cold, water pump, cooling tower Number and power consumption;The water consumption of cold source system is monitored, is gathered by being arranged on the tap water acquisition terminal of refrigeration plant water pipe; By the temperature that is arranged on chilled water, cooling water system pipeline, pressure sensing terminal monitoring, the temperature of collection cold source system and Pressure parameter;By being disposed in the outdoor the temperature with the temperature and humidity sensing terminal monitoring, collection outdoor and interior of indoor setting position Humidity parameter;And monitoring chilled water pump frequency manually, auto state, chilled water pump start-stop is long-range, state on the spot, chilled water pump Running status, fault alarm;
B, the energy consumption data gathered in step a, system state data are collected, according to the handpiece Water Chilling Units in system, Chilled water pump, cooling water pump, the operation power parameter of blower fan of cooling tower, the refrigerating capacity of handpiece Water Chilling Units, calculate cold source system Real-time refrigerating efficiency, and obtained according to current outdoor temperature humidity parameter and indoor temperature and humidity parameter and load forecasting model prediction Current prediction of energy consumption data, energy consumption data of the prediction of energy consumption data with actual monitoring is contrasted, it is found that refrigeration system makes Problem with, forms the optimization operation control strategy of cold source system, wherein, the load forecasting model is obtained in the following way :Statistics under different outdoor temperature humidity parameters and indoor temperature degree Parameter Conditions, per when, daily, monthly, annual cold source system Energy consumption data, the same period or chain rate analysis are carried out to the energy consumption of cold source system, obtain building actual load with it is outdoor it is each it is meteorological will Related law between element and end load characteristic, and historical data Load Forecast Algorithm is repaiied according to the related law Just, obtain load forecasting model;
The optimization formed in step b is run control strategy by c, by direct digital controller and coupled electronic Valve realizes optimization operation control.
In above-described embodiment, the direct digital controller can have multiple, be separately positioned on main frame, cooling water pump, cold But tower position.
Check for ease of management personnel and technical staff, above-described embodiment can also be comprised the following steps:
The energy consumption data gathered in step a, system state data are carried out collecting forming form and analysis report, while with Historical data carries out contrast statistics and draws energy-saving effect, pushes, is presented to related personnel.
When implementing, according to management needs, can carry out the multiple angles such as history, ratio to can situation analysis, Multidimensional analysis can also be carried out according to time, region etc., ways of presentation can be with various exhibitions such as trade-off curve, block diagram, pie chart Existing mode.Per diem, the time period such as the moon, season, year carry out energy consumption statistic, generate various energy resources report forms and analysis report.
Further, the chilled water pump running status can include the converting operation of chilled water pump, bypass operation, stop Only.
It is below an embodiment for implementing of the invention:
The central air conditioner cold source systemic-function realized mainly supports three layers comprising real-time monitoring, service application and management Face.Real-time monitoring is the electricity consumption to central air conditioner cold source system, is supervised with water, cold, temperature, pressure, equipment state in real time Survey;Service application aspect is that the information for gathering is analyzed, and produces the optimization operation control strategy of central air conditioner cold source system, Optimization operation control is realized by direct digital controller, electrodynamic valve etc.;Data are mainly formed form by management support aspect And analysis report, while count energy-saving effect, according to management needs be customized, while issue, be presented to management personnel and Technical staff.
1st, capital construction
Including the basic network hardware such as server, network, main frame, operating system, it is the basis of energy consumption supervisory systems construction.
2nd, energy consumption on-line monitoring
Electric power acquisition terminal, monitoring, collection cold, water pump, the power consumption parameter of cooling tower and use are disposed in low-temperature receiver switchgear house Electricity;Tap water acquisition terminal, monitoring, the water consumption of collection cold source system are disposed in refrigeration plant water pipe;In chilled water, cold But water system line upper portion affixes one's name to temperature, pressure sensing terminal, monitoring, the temperature and pressure of acquisition system;In outdoor and indoor allusion quotation Temperature and humidity sensing terminal, the humiture of monitoring, collection outdoor and interior are disposed in type position.
3rd, energy consumption analysis
Macro or mass analysis are carried out to energy consumption data, system state data, energy consumption waste, efficiency during cold source system runs is found out low Questions and prospect, formed optimization operation control strategy.
4th, optimization operation control
Direct digital control terminal is disposed in main frame, water pump, each device location of cooling tower, is entered with main frame, water pump, cooling tower Control strategy is write direct digital controller, carries out centralized Control and displaying to cold source system by software by row communication.
Wherein cold source system optimization operation control is digital control using concentrating, and it is to cold station that low-temperature receiver concentrates numerical control system Cold water main unit and its all the Centralizing inspection of bottom subsidiary engine (including chilled water pump, cooling water pump, cooling tower, electrodynamic valve etc.) with Control, the key start of achievable cold source system, order start and stop, loading, off-load, linkage, protection, sets according to outdoor weather situation Determine the switching on and shutting down time, according to indoor load change setting confession, return water temperature etc..
Direct digital control (Direct Digital Control, DDC), commonly referred to DDC controllers.DDC systems are Execution various logic control function is done using micro-signal processor, maximum feature is exactly from the collection of parameter, is transferred to control Deng links using digital control function realizing.DDC controllers are the cores of whole system, are that system realizes control work( The critical component of energy.
5th, network transmission
The construction content of system transfers network is mainly communication line and lays, one be by water, electricity, temperature, pressure meter Amount terminal is connected with data acquisition unit downlink port by RS485 lines, and direct digital control terminal is passed through RS485 lines and each control Gateway processed is attached;Two is the collection front end processor for connecting data acquisition unit, control gateway and system by netting twine.
The systemic-function realized includes:
1st, energy consumption on-line monitoring
Electricity consumption to central air conditioner cold source system, real-time monitoring is carried out with water, cold, temperature, pressure, equipment state.
2nd, energy consumption analysis
According to management needs, the multiple angles such as history, ratio are carried out to can situation analysis, it is also possible to according to time, area Domain etc. carries out multidimensional analysis, and ways of presentation can be with various ways of presentation such as trade-off curve, block diagram, pie chart.Per diem, the moon, season The time periods such as degree, year carry out energy consumption statistic, generate various energy resources report forms and analysis report.
3rd, cold water main unit operational management and inside and outside data monitoring
Handpiece Water Chilling Units monitoring running state, fault alarm;Handpiece Water Chilling Units inner parameter is monitored;Handpiece Water Chilling Units are opened, stop control; Accumulation handpiece Water Chilling Units run time.
4th, chilled water system monitoring
Chilled water circuit house steward water supply flow is monitored;Chilled water supplies return main's temperature monitoring;Pressure reduction between water collecting and diversifying device, Monitor for backwater pressure reduction;Chilled water pump frequency is manual, auto state;Chilled water pump start-stop is long-range, state on the spot;Chilled water pump is transported Row state (converting operation, bypass operation, stopping), fault alarm;Chilled water pump frequency converter frequency feeds back, gives;Chilled water pump Converter inner parameter is monitored;Chilled water pump power param eter supervision.
5th, cooling water system monitoring
Cooling water return main's temperature monitoring;Pressure reduction between water collecting and diversifying device, monitor for backwater pressure reduction;Cooling water pump frequency handss Dynamic, auto state;Cooling water pump, cooling tower start-stop be long-range, state on the spot;Cooling water pump, blower fan of cooling tower monitoring running state, Fault alarm;Cooling water pump, cooling tower on the spot, long-range on off control;Cooling water pump frequency converter frequency feeds back, gives;Cooling water Pump frequency conversion device inner parameter is monitored;Cooling water pump, cooling tower power param eter supervision.
6th, machine room team control
Equipment automatically switches, system chain control;Handpiece Water Chilling Units loading, Unloading Control;Monitoring to equipment such as electrodynamic valves; System protection is controlled.When return water temperature reaches the setting value upper limit, handpiece Water Chilling Units automatic, when return water temperature reaches setting value During lower limit, handpiece Water Chilling Units autostop, while being carried out with peripheral equipment chain, is first opened electrodynamic valve, is then turned on during system start-up Cooling water pump, it is then turned on cooling tower, finally opens handpiece Water Chilling Units, first stops handpiece Water Chilling Units during shutdown, stops cooling tower again, then stop Only cooling water pump, finally close electrodynamic valve;When there is multiple stage handpiece Water Chilling Units to run, system automatically selects start according to return water temperature Number of units, is switched over automatically, wherein, cold source system automatically selects use time less when opened handpiece Water Chilling Units are selected Handpiece Water Chilling Units operation, automatically select when such as return water temperature is high second, the 3rd handpiece Water Chilling Units add operation, such as return water temperature Automatically operation number of units is reduced when low.
7th, safeguard protection and warning
Chiller plant control system provides full-order system defencive function, including chilled water system is provided with low temperature, low voltage difference, low stream Amount protection;Cooling water is provided with high temperature, low discharge protection.Guarantee that main frame operation is safe and stable, it is to avoid main frame occurs surge, evaporation The failures such as device frozen pipe.Power phase shortage protection, overvoltage protection, overcurrent protection, low-voltage protection, output short circuit protection, ground connection Error protection.During device fails, switch board realizes frequency conversion, bypass loop automatic switching function, and automatically engages standby setting It is standby.Chilled water system device failure alert, bitcom failure, technological parameter early warning and alarming.Various alarming and managing functions are provided, are carried For preferentially being arranged based on the warning of warning menace level.Automatically monitor various classifications to report to the police, including general alarm, pre-alarm, weight Report to the police, and corresponding alarm point is shown on picture, automatic spring warning relevant information.
Additionally, also longer-term storage and various inquiries can be carried out according to the demand of user, user, fault type, generation are such as pressed The conditions such as time or conditional combination are inquired about.Alarm logging in historical data base long term archival can make post analysis.
The present invention distinguishes central air conditioner system energy waste and the energy by energy consumption monitoring based on energy consumption supervisory systems The service efficiency low time period, by efficiency diagnostic analysiss Producing reason, carried out by concentrating the application of digital control technology Targetedly energy-conservation rectification, while make amount of energy saving it is measurable, visualization.Make energy consumption monitoring, concentrate number by our work Word control technology and energy efficiency management perfect adaptation.The present invention is in terms of air-conditioning energy consumption running optimizatin, daily management optimization etc. Carry out energy efficiency supervision and improvement so that the application of technology more scientific and preciseness.
One of ordinary skill in the art will appreciate that:Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or Flow process is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that:The module in device in embodiment can be according to embodiment description point It is distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.On The module for stating embodiment can merge into a module, it is also possible to be further split into multiple submodule.
Finally it should be noted that:Above example only to illustrate technical scheme, rather than a limitation;Although With reference to the foregoing embodiments the present invention has been described in detail, it will be understood by those within the art that:Which still may be used To modify to the technical scheme described in previous embodiment, or equivalent is carried out to which part technical characteristic;And These modifications are replaced, and do not make the essence of appropriate technical solution depart from the spirit and model of embodiment of the present invention technical scheme Enclose.

Claims (6)

1. a kind of low-temperature receiver based on energy consumption monitoring concentrates digital control method, it is characterised in that comprise the following steps:
A, electricity consumption to central air conditioner cold source system, carries out real-time monitoring with water, cold, temperature, pressure, equipment state, specifically Including:By be arranged on low-temperature receiver switchgear house electric power acquisition terminal monitoring, collection cold, water pump, the power consumption parameter of cooling tower and Power consumption;The water consumption of cold source system is monitored, is gathered by being arranged on the tap water acquisition terminal of refrigeration plant water pipe;Pass through It is arranged on temperature on chilled water, cooling water system pipeline, pressure sensing terminal monitoring, the temperature and pressure of collection cold source system Parameter;By being disposed in the outdoor the humiture with the temperature and humidity sensing terminal monitoring, collection outdoor and interior of indoor setting position Parameter;And monitoring chilled water pump frequency manually, auto state, chilled water pump start-stop is long-range, state on the spot, chilled water pump operation State, fault alarm;
B, the energy consumption data gathered in step a, system state data are collected, according to the handpiece Water Chilling Units in system, freezing Water pump, cooling water pump, the operation power parameter of blower fan of cooling tower, the refrigerating capacity of handpiece Water Chilling Units, calculate the real-time of cold source system Refrigerating efficiency, and obtain current according to current outdoor temperature humidity parameter and indoor temperature and humidity parameter and load forecasting model prediction Prediction of energy consumption data, energy consumption data of the prediction of energy consumption data with actual monitoring is contrasted, find refrigeration system use in Problem, formed cold source system optimization operation control strategy, wherein, the load forecasting model is obtained in the following way: Statistics under different outdoor temperature humidity parameters and indoor temperature degree Parameter Conditions, per when, daily, monthly, annual cold source system Energy consumption data, carries out the same period or chain rate analysis to the energy consumption of cold source system, obtains building actual load and outdoor each meteorological element And the related law between end load characteristic, and historical data Load Forecast Algorithm is modified according to the related law, Obtain load forecasting model;
The optimization formed in step b is run control strategy, by direct digital controller and coupled electrodynamic valve reality by c Now optimization operation control.
2. low-temperature receiver according to claim 1 concentrates digital control method, it is characterised in that the direct digital controller point Main frame, cooling water pump, cooling tower position are not arranged on.
3. low-temperature receiver according to claim 1 concentrates digital control method, it is characterised in that further comprising the steps of:
The energy consumption data gathered in step a, system state data are carried out collecting forming form and analysis report, while and history Data carry out contrast statistics and draw energy-saving effect, push, be presented to related personnel.
4. low-temperature receiver according to claim 1 concentrates digital control method, it is characterised in that the chilled water pump running status Converting operation, bypass operation including chilled water pump, stopping.
5. low-temperature receiver according to claim 1 concentrates digital control method, it is characterised in that when return water temperature reaches setting value During the upper limit, handpiece Water Chilling Units automatic, when return water temperature reaches setting value lower limit, handpiece Water Chilling Units autostop, while with week Edge equipment carries out chain, first opens electrodynamic valve, be then turned on cooling water pump, be then turned on cooling tower, finally open cold during system start-up Water dispenser group, first stops handpiece Water Chilling Units, stops cooling tower again, then stop cooling water pump, finally close electrodynamic valve during shutdown;It is many when having When platform handpiece Water Chilling Units are run, system automatically selects start number of units according to return water temperature, switches over automatically, wherein, cold source system When opened handpiece Water Chilling Units are selected, the less handpiece Water Chilling Units operation of use time is automatically selected.
6. low-temperature receiver according to claim 1 concentrates digital control method, it is characterised in that also include:
Low temperature, low voltage difference, low discharge protection are provided with to chilled water system;And/or
High temperature, low discharge protection are provided with to cooling water system;And/or
Open-phase protection, overvoltage protection, overcurrent protection, low-voltage protection, output short circuit protection, earth fault are carried out to power supply Protection;And/or
When device fails, frequency conversion, bypass loop automatic switching function are realized by switch board, and automatically engages standby setting It is standby;And/or
Fault alarm, bitcom failure, technological parameter early warning and alarming function are arranged to cooling water system equipment, while based on report Alert menace level arranges warning priority, monitors automatically various classifications and reports to the police, and the corresponding classification of failure includes general alarm, pre- Report to the police, important warning etc., and corresponding alarm point is shown on picture, automatic spring warning relevant information.
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