CN203501387U - Ice storage control system with next day energy consumption simulation functions - Google Patents
Ice storage control system with next day energy consumption simulation functions Download PDFInfo
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- CN203501387U CN203501387U CN201320604771.2U CN201320604771U CN203501387U CN 203501387 U CN203501387 U CN 203501387U CN 201320604771 U CN201320604771 U CN 201320604771U CN 203501387 U CN203501387 U CN 203501387U
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Abstract
The utility model relates to an ice storage control system with next day energy consumption simulation functions, which comprises a self-control and simulation host, wherein the self-control and simulation host is respectively connected with a weather forecast server and a programmable logic controller through internet and a communication module, the programmable logic controller is connected with a chilled water temperature measurement module and a chilled water flow rate measurement module, an ethylene glycol temperature measurement module, an ethylene glycol flow rate measurement module, an ice thickness sensor, an electric meter, a double working condition host control module, a chilled water pump control module, a cooling water pump control module and an ethylene glycol pump control module. The ice storage control system with the next day energy consumption simulation functions has the beneficial effects that the ice storage control system with the next day energy consumption simulation functions can simulate next day energy consumption by adopting weather forecast parameters, formulates a control strategy based on accurate load forecasting of an ice storage system, is accurate in load forecasting, scientific and reasonable to control, can improve operation efficiency of the ice storage system, saves operation cost, can be loaded based on an existing ice storage system, and is low in initial cost and wide in applied range.
Description
Technical field
The utility model relates to field of energy-saving technology, relates in particular to a kind of ice cold-storage control system with simulation of energy consumption function next day.
Background technology
Ice-storage system: ice-storage air-conditioning is to utilize the ice making of night dip load electric power to be stored in ice storage unit, and ice-melt on daytime discharges stored cold, reduces electrical network air conditioning electricity peak period load and air-conditioning system installed capacity.The conventional mode of operation of requirement meeting for refrigeration duty has several as follows: (1) Double-working-condition refrigeration host computer ice-make mode (2); Double-working-condition refrigeration host computer cooling pattern; (3) Double-working-condition refrigeration host computer and Ice Storage Tank while cooling; (4) Ice Storage Tank cooling pattern.
About simulation of energy consumption: building energy consumption data directly affect ice-storage system every day ice-reserving amount and each mode of operation under running time, be affect the critical data that ice-storage system moves Strategy Design.In recent years, under experts and scholars' in the field of business promotion and effort, building dynamic energy consumption analogue technique has obtained applying preferably in China, by using the simulation of energy consumption software of the various domestic and international maturations such as DOE, DeST, Energyplus, Equest, scientific research personnel and HVAC designer, when carrying out building energy consumption and load calculating, can both obtain relatively accurate, full and accurate result.And because the building energy consumption packet of simulation of energy consumption Software Create contains the building dynamic energy consumption analog result of annual 8760 hours, accumulative total every day that we can therefrom obtain building easily consumes cold (heat) amount, predict good air conditioner load.So, at needs, accurately to calculate in the PRACTICE OF DESIGN of the ice-storage system that totally consumes cold (heat) amount every day, simulation of energy consumption technology plays an important role, and the energy consumption parameter of building is the basic data of carrying out the design of ice-storage system.But, as having that scholar pointed out, because basic data is outmoded, all factors such as unusual weather conditions of causing of Algorithm Error, global warming, actual conditions are obviously departed from the out door climatic parameter storehouse that relevant energy consumption simulation softward adopts, and the energy consumption data calculating is also difficult to adapt to Fine design and the demand for control of relevant ice-storage system.According to the research of pertinent literature, the simulation of energy consumption difference that adopts different meteorological datas to obtain for same building thing is quite large, and maximum different value is 84.15%.For this situation, we need to introduce the concept of the simulation of energy consumption based on weather forecast parameter.
About meteorologic parameter: the basis in existing meteorologic parameter storehouse is 270 meteorological stations in the whole nation meteorological measuring of 1971 ~ 2003 years that the meteorological reference room in China Meteorological Administration's weather information center provides.The basic skills that forms typical meteorological year is to pick out " average month " (or " standard moon ") to form typical meteorological year according to certain benchmark.The gap of the outdoor meteorological calculating parameter of determining by this way and Practical Meteorological Requirements parameter and forecast meteorologic parameter is larger.
About simulation of energy consumption next day: the simulation of energy consumption that we say conventionally refers at building design stage based on existing meteorologic parameter storehouse and selected building enclosure parameter, indoor design, and the air-conditioning of building and heating load are carried out to analog computation and the prediction of annual 8760 hours.And along with the development of China's Meteorological Science, very accurate to the forecast of the temperature of next day, relative humidity, intensity of solar radiation and wind direction in each big city weather forecast of China at present.In order to guarantee the degree of accuracy of simulation of energy consumption, use weather forecast next day parameter to carry out simulation of energy consumption next day, the air-conditioning of building in 24 hours next day and heating load are carried out to analog computation and prediction, Here it is adopt weather forecast parameter next day simulation of energy consumption concept (being called for short simulation of energy consumption next day).For the built fixed building of building enclosure characteristic, there is not the error of Thermal Performance of Envelope Structure parameter, next day simulation of energy consumption can be used as ice-storage system operation Strategy Design accurately and solid foundation.There is researcher to carry out respectively the simulation of energy consumption based on existing meteorologic parameter storehouse, simulation of energy consumption next day based on weather forecast parameter for identical building, and carried out the compare of analysis of 2 kinds of simulation of energy consumption results, can find the load extreme value and the accumulative total load that use the simulation of existing meteorologic parameter storehouse to generate, with actual measurement load deviation more than 75%. and based on weather forecast parameter next day simulation of energy consumption result and actual load substantially identical, the deviation ratio of load extreme value and aggregate-value is all in 5%.Based on weather forecast parameter next day simulation of energy consumption result more approach actual condition, can better meet that ice cold-storage engineering is carried out accurately, the requirement of science, economic control.
About the formulation of Control Strategy of Iced Storage-cold System, generally there are following 2 kinds of operating modes more common.
Operating mode (1): when the next day of predicting by simulation of energy consumption, accumulative total refrigeration duty was less than or equal to the maximum cold storage capacity of system, ice-reserving operation strategy is: after paddy electricity starts constantly, start immediately the operation of Double-working-condition refrigeration host computer ice-make mode, open Double-working-condition main frame by ice making operating mode operation ice-reserving, start eg pump, cooling water pump simultaneously, when accumulative total ice-reserving for cold, can meet next day accumulative total refrigeration duty time, armamentarium is out of service.Ice melting operation strategy is: whole day is with Ice Storage Tank cooling mode operation, until one day cooling finishes.
Operating mode (2): when the next day of predicting by simulation of energy consumption, accumulative total refrigeration duty was greater than the maximum cold storage capacity of system, ice-reserving operation strategy is: after paddy electricity starts constantly, start immediately the operation of Double-working-condition refrigeration host computer ice-make mode, while only reaching maximum ice-reserving amount to Ice Storage Tank, armamentarium is out of service.Ice melting operation strategy is: whole day, was melted to the greatest extent until Ice Storage Tank is deposited ice, then switched to Double-working-condition refrigeration host computer cooling pattern with Ice Storage Tank cooling mode operation in the electric period of the highest peak of electricity price.Meanwhile, if the maximum that the refrigeration duty of electric period system surpasses Ice Storage Tank at peak is for cold, need open Double-working-condition refrigeration host computer, with Double-working-condition refrigeration host computer and Ice Storage Tank while cooling mode operation simultaneously.
The existing ice cold-storage control system based on programmable logic controller (PLC) (PLC) is not established automatic control and simulation framework, from weather forecast server, do not obtain the function of weather forecast parameter, cannot carry out system simulation of energy consumption next day yet and formulate rational system running policy according to analog result.
Utility model content
The purpose of this utility model is to provide a kind of ice cold-storage control system with simulation of energy consumption function next day, adopts weather forecast parameter to carry out the simulation of energy consumption of next day, to improve ice-storage system operational efficiency, saves systematic running cost and uses.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of ice cold-storage control system with simulation of energy consumption function next day, comprise automatic control and simulation framework, described automatic control and simulation framework are connected with weather forecast server by internet, automatic control and simulation framework are connected with programmable logic controller (PLC) by communication module, programmable logic controller (PLC) is connected with chilled water temperature measurement module, chilled-water flow measurement module, ethylene glycol temperature-measuring module, ethylene glycol flow measurement module, ice thickness sensor, electricity gauge table, Double-working-condition host computer control module, chilled water pump control module, cooling water pump control module and eg pump control module, described Double-working-condition host computer control module, chilled water pump control module, cooling water pump control module, eg pump control module connect respectively Double-working-condition main frame, chilled water pump, cooling water pump, eg pump.
Further, described ice thickness sensor is electrode type ice thickness sensor, for measuring in real time the ice thickness on static Ice Storage Tank inner coil pipe surface.
Further, described electric gauge table is the three-phase intelligent type time-sharing ammeter with communication interface, for measuring in real time the power consumption of ice-storage system.
Further, described automatic control and simulation framework can be downloaded the weather forecast data of next day from weather forecast server by internet, the various measured values that automatic control and simulation framework send according to described programmable logic controller (PLC), send control instruction according to default control program to programmable logic controller (PLC).
Further, described in described programmable logic controller (PLC) timing acquiring, the data of chilled water temperature measurement module, chilled-water flow measurement module, ethylene glycol temperature-measuring module, ethylene glycol flow measurement module, ice thickness sensor and electric gauge table, are sent to automatic control and simulation framework by communication module; The control instruction that programmable logic controller (PLC) sends according to automatic control and simulation framework, according to default control program, to Double-working-condition host computer control module, chilled water pump control module, cooling water pump control module, eg pump control module, send control instruction, control the start and stop of Double-working-condition main frame, chilled water pump, cooling water pump, eg pump.
The beneficial effects of the utility model are: can adopt weather forecast parameter to carry out the simulation of energy consumption of next day, prior art to the order of accuarcy of ice-storage system load prediction far above the historical meteorologic parameter of use, and control strategy of the present utility model is formulated based on ice-storage system load prediction accurately, load prediction is accurate, control scientific and reasonable, can improve ice-storage system operational efficiency, saving systematic running cost is used, and can on existing ice-storage system basis, install additional, initial cost is low, has wide range of applications; The utility model is provided with ice thickness sensor, and the ice thickness on the static Ice Storage Tank inner coil pipe of Measurement accuracy surface in real time, for automatic control and simulation framework provide ice-reserving amount parameter, is controlled foundation is provided for systematic science, and is convenient to operational management personnel and grasps ice-reserving amount; The utility model is provided with the power consumption that electric gauge table can be measured ice-storage system in real time, is convenient to operational management personnel the energy consumption of system is monitored.
Accompanying drawing explanation
With reference to the accompanying drawings the utility model is described in further detail below.
Fig. 1 is the structured flowchart described in the utility model embodiment with the ice cold-storage control system of simulation of energy consumption function next day.
In figure:
1, chilled water temperature measurement module; 2, chilled-water flow measurement module; 3, ethylene glycol temperature-measuring module; 4, ethylene glycol flow measurement module; 5, ice thickness sensor; 6, electric gauge table; 7, Double-working-condition host computer control module; 8, chilled water pump control module; 9, cooling water pump control module; 10, eg pump control module; 11, programmable logic controller (PLC); 12, communication module; 13, automatic control and simulation framework; 14, internet; 15, weather forecast server.
The specific embodiment
As shown in Figure 1, the ice cold-storage control system with simulation of energy consumption function next day described in the utility model embodiment, comprise automatic control and simulation framework 13, described automatic control and simulation framework 13 are connected with weather forecast server 15 by internet 14, automatic control and simulation framework 13 are connected with programmable logic controller (PLC) 11 by communication module 12, programmable logic controller (PLC) 11 is connected with chilled water temperature measurement module 1, chilled-water flow measurement module 2, ethylene glycol temperature-measuring module 3, ethylene glycol flow measurement module 4, ice thickness sensor 5, electricity gauge table 6, Double-working-condition host computer control module 7, chilled water pump control module 8, cooling water pump control module 9 and eg pump control module 10, Double-working-condition host computer control module 7, chilled water pump control module 8, cooling water pump control module 9, eg pump control module 10 connect respectively Double-working-condition main frame, chilled water pump, cooling water pump, eg pump,
Described ice thickness sensor 5 is electrode type ice thickness sensor, for measuring in real time the ice thickness on static Ice Storage Tank inner coil pipe surface; Described electric gauge table 6 is the three-phase intelligent type time-sharing ammeter with communication interface, for measuring in real time the power consumption of ice-storage system., described automatic control and simulation framework 13 can be downloaded the weather forecast data of next day from weather forecast server 15 by internet 14, the various measured values that described automatic control and simulation framework 13 send according to described programmable logic controller (PLC) 11, send control instruction according to default control program to programmable logic controller (PLC) 11, chilled water temperature measurement module 1 described in described programmable logic controller (PLC) 11 timing acquiring, chilled-water flow measurement module 2, ethylene glycol temperature-measuring module 3, ethylene glycol flow measurement module 4, the data of ice thickness sensor 5 and electric gauge table 6, by communication module 12, be sent to automatic control and simulation framework 13, the control instruction that described programmable logic controller (PLC) 11 sends according to automatic control and simulation framework 13, according to default control program to Double-working-condition host computer control module 7, chilled water pump control module 8, cooling water pump control module 9, eg pump control module 10 is sent control instruction, control Double-working-condition main frame, chilled water pump, cooling water pump, the start and stop of eg pump.
When the utility model is specifically used, described weather forecast server 15 can be the server of Public meteorology forecast website or the authoritative media server of issue weather forecast data of various places weather bureau.Automatic control and simulation framework 13 can be downloaded the weather forecast data of next day from weather forecast server 15 by internet 14.The weather forecast data of next day comprise temperature next day, next day relative humidity, next day intensity of solar radiation, inferior daily rain amount situation etc.Described automatic control and simulation framework 13 obtain after can using general commercial computer (such as Dell Precision T5600<Xeon E5-2603/4GB/250GB>) to install existing various simulation of energy consumption software and control software additional.The compatibility of taking into account system and extensibility, the operating system of automatic control and simulation framework 13 can adopt common Win7 operating system.Simulation of energy consumption software can be selected can be by the DeST-Standard software of the free domestic research and development that obtain of open channel or external Energyplus software.
After obtaining the weather forecast data of next day, ice-storage system operating personnel use automatic control and simulation framework 13, by next day meteorologic parameter write the meteorologic parameter storehouse of simulation softward, carry out simulation of energy consumption next day of building, and record and output analog result.According to the result of simulation of energy consumption next day, the inferior daily load that operating personnel can Accurate Prediction ice-storage system, and formulate the ice-storage system operation strategy of next day according to this load.Such as, analog result showed when next day, accumulative total refrigeration duty was lower than the maximum cold storage capacity of system, ice-reserving operation strategy is: after paddy electricity starts constantly, open immediately Double-working-condition main frame by ice making operating mode operation ice-reserving, start eg pump, cooling water pump simultaneously, when accumulative total ice-reserving for cold, can meet next day accumulative total refrigeration duty time, armamentarium is out of service.Ice-reserving in other various situations or ice melting operation strategy also can be formulated by existing public technology and method.
Automatic control and simulation framework 13 are provided with industrial control software such as KingView software, can utilize this industrial control software to control interface according to the feature establishment by open skilled worker's journey, according to established operation strategy, write control program.
Ice-storage system generally has four kinds of operational modes such as Double-working-condition main frame ice-make mode, main frame base load or Double-working-condition main frame cooling pattern, main frame base load or Double-working-condition main frame and Ice Storage Tank air conditioning pattern, Ice Storage Tank ice-melt cooling pattern.The operation side of ice-storage system content is slightly mainly that control system is switched between these four kinds of operational modes.When application the utility model, operation strategy under can the load condition of various different buildings prepared in advance and move tactful control program for this, and they are stored in to 13, form < < operation strategy and control program storehouse > > in automatic control and simulation framework.
When automatic control and simulation framework 13 are downloaded the weather forecast data of next day and complete after simulation of energy consumption from weather forecast server 15, operating personnel can be according to the result of simulation of energy consumption, energy consumption prediction, directly at < < operation strategy and control program storehouse > >, selects applicable operation strategy and control program operation strategy and the control program as next day.Utilize after prior art application programming, this process also can in automatic control and simulation framework 13 is interior be carried out automatically, without manual operation.Establishment < < operation strategy and control program storehouse > > should be taken into account the on-site electrovalence policy of system.
Described programmable logic controller (PLC) 11 can adopt the existing matured products such as S7400PLC, utilizes the supporting developing instrument providing of PLC producer as S7-PLCSIM V5.4, by existing public technology, according to requirement of engineering, works out PLC control program.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but do any variation in its shape or structure; every have identical with a application or akin technical scheme, within all dropping on protection domain of the present utility model.
Claims (3)
1. an ice cold-storage control system with simulation of energy consumption function next day, comprise automatic control and simulation framework (13), it is characterized in that: described automatic control and simulation framework (13) are connected with weather forecast server (15) by internet (14), automatic control and simulation framework (13) are connected with programmable logic controller (PLC) (11) by communication module (12), and programmable logic controller (PLC) (11) is connected with chilled water temperature measurement module (1), chilled-water flow measurement module (2), ethylene glycol temperature-measuring module (3), ethylene glycol flow measurement module (4), ice thickness sensor (5), electricity gauge table (6), Double-working-condition host computer control module (7), chilled water pump control module (8), cooling water pump control module (9) and eg pump control module (10), described Double-working-condition host computer control module (7), chilled water pump control module (8), cooling water pump control module (9), eg pump control module (10) connects respectively Double-working-condition main frame, chilled water pump, cooling water pump, eg pump.
2. the ice cold-storage control system with simulation of energy consumption function next day according to claim 1, is characterized in that: described ice thickness sensor (5) is electrode type ice thickness sensor.
3. the ice cold-storage control system with simulation of energy consumption function next day according to claim 2, is characterized in that: described electric gauge table (6) is the three-phase intelligent type time-sharing ammeter with communication interface.
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| CN201320604771.2U CN203501387U (en) | 2013-09-26 | 2013-09-26 | Ice storage control system with next day energy consumption simulation functions |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499136A (en) * | 2013-09-26 | 2014-01-08 | 中铁建设集团有限公司 | Ice storage control system with next-day energy consumption simulating function |
| CN107676925A (en) * | 2017-11-27 | 2018-02-09 | 中山路得斯空调有限公司 | A kind of method for the power consumption for calculating central air conditioner system storage cool equipment |
| US10808979B2 (en) | 2018-10-12 | 2020-10-20 | Chicony Power Technology Co., Ltd. | Ice storage amount adjusting system and adjusting method for the same |
| CN112696750A (en) * | 2021-01-22 | 2021-04-23 | 德莱创节能科技（苏州）有限公司 | Cold accumulation control method and device for air conditioning device with cold accumulation function |
-
2013
- 2013-09-26 CN CN201320604771.2U patent/CN203501387U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499136A (en) * | 2013-09-26 | 2014-01-08 | 中铁建设集团有限公司 | Ice storage control system with next-day energy consumption simulating function |
| CN107676925A (en) * | 2017-11-27 | 2018-02-09 | 中山路得斯空调有限公司 | A kind of method for the power consumption for calculating central air conditioner system storage cool equipment |
| CN107676925B (en) * | 2017-11-27 | 2020-01-14 | 中山路得斯空调有限公司 | Method for calculating power consumption of cold storage equipment of central air-conditioning system |
| US10808979B2 (en) | 2018-10-12 | 2020-10-20 | Chicony Power Technology Co., Ltd. | Ice storage amount adjusting system and adjusting method for the same |
| CN112696750A (en) * | 2021-01-22 | 2021-04-23 | 德莱创节能科技（苏州）有限公司 | Cold accumulation control method and device for air conditioning device with cold accumulation function |
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