CN103499136B - Ice storage control system with next-day energy consumption simulation function - Google Patents
Ice storage control system with next-day energy consumption simulation function Download PDFInfo
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- 238000004088 simulation Methods 0.000 title claims abstract description 83
- 238000005265 energy consumption Methods 0.000 title claims abstract description 50
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000498 cooling water Substances 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 claims description 20
- 230000005611 electricity Effects 0.000 claims description 19
- 238000009529 body temperature measurement Methods 0.000 claims description 7
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 238000011217 control strategy Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 description 15
- 238000001816 cooling Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000003203 everyday effect Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000013486 operation strategy Methods 0.000 description 3
- 210000000582 semen Anatomy 0.000 description 3
- 230000009897 systematic effect Effects 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
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- 230000035800 maturation Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000048 melt cooling Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Abstract
The invention relates to an ice storage control system with a next-day energy consumption simulation function, which comprises an automatic control and simulation host, wherein the automatic control and simulation host is respectively connected with a weather forecast server and a programmable logic controller through the Internet and a communication module, and the programmable logic controller is connected with a chilled water temperature measuring module, a chilled water flow measuring module, an ethylene glycol temperature measuring module, an ethylene glycol flow measuring module, an ice thickness sensor, an electric meter, a dual-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 invention has the beneficial effects that: the method can be used for simulating the energy consumption of the next day by adopting weather forecast parameters, the control strategy of the invention is formulated based on accurate load prediction of the ice storage system, the load prediction is accurate, the control is scientific and reasonable, the operation efficiency of the ice storage system can be improved, the operation cost of the system can be saved, and the method can be additionally arranged on the basis of the existing ice storage system, and has low initial investment and wide application range.
Description
Technical field
The present invention relates to field of energy-saving technology, particularly relate 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 night dip load electric power ice making to be stored in ice storage unit, and stored cold is discharged by ice-melt on daytime, reduces electrical network air conditioning electricity peak period load and air conditioning system installed capacity.The mode of operation meeting the requirement for refrigeration duty conventional has the most several: (1) Double-working-condition refrigeration host computer ice-make mode；(2) Double-working-condition refrigeration host computer cooling mode；(3) Double-working-condition refrigeration host computer and Ice Storage Tank cooling simultaneously；(4) Ice Storage Tank cooling mode.
About simulation of energy consumption: building energy consumption data directly affect ice-storage system every day ice storage amount and each mode of operation under the operation time, be affect ice-storage system operation reserve design critical data.In recent years, under the promotion of experts and scholars in the field of business and effort, building dynamic energy consumption analogue technique has obtained preferable popularization and application 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 system design personnel, when carrying out building energy consumption and carry calculation, can obtain relatively accurate, full and accurate result.Further, owing to the building energy consumption packet of simulation of energy consumption Software Create contains the building dynamic energy consumption analog result of annual 8760 hours, we can the most therefrom obtain accumulative consumption cold (hot) amount every day of building, it was predicted that building air-conditioning load.So, in needing the accurately calculating accumulative PRACTICE OF DESIGN consuming the ice-storage system that cold (hot) measures every day, simulation of energy consumption technology plays an important role, and the energy consumption parameter of building is by the basic data of the design of ice-storage system.But, as as have scholar already indicated above, owing to basic data is outmoded, all factors such as the unusual weather conditions that cause of Algorithm Error, global warming, the out door climatic parameter storehouse that relevant energy consumption simulation softward uses has deviated considerably from practical situation, and the energy consumption data calculated also is 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 using different meteorological datas to obtain for same building thing is quite big, and maximum different value is 84.15%.For this situation, it would be desirable to introduce the concept of simulation of energy consumption based on weather forecast parameter.
About meteorologic parameter: the basis in existing meteorologic parameter storehouse is the whole nation 270 meteorological stations meteorological measuring of 1971 ~ 2003 years that China Meteorological Administration's weather information central gas provides as reference room.The basic skills constituting typical meteorological year is to pick out " the average moon " (or " standard moon ") to form typical meteorological year according to certain benchmark.It is bigger with the gap of Practical Meteorological Requirements parameter and forecast meteorologic parameter that the outdoor weather determined by this way calculates parameter.
About simulation of energy consumption next day: the simulation of energy consumption that generally we are said refers to carry out the simulation calculating of annual 8760 hours at building design stage based on existing meteorologic parameter storehouse and selected building enclosure parameter, indoor design, air-conditioning and heating load to building and predict.And along with the development of China's Meteorological Science, in each big city weather forecast of current China, the forecast to temperature, relative humidity, intensity of solar radiation and the wind direction of next day is the most accurate.In order to ensure the accuracy of simulation of energy consumption, weather forecast next day parameter is used to carry out simulation of energy consumption next day, be simulated calculating and prediction to the air-conditioning of building in 24 hours next day and heating load, here it is use 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, the accurately solid foundation that next day, simulation of energy consumption can design as the operation reserve of ice-storage system.Researcher is had to carry out simulation of energy consumption based on existing meteorologic parameter storehouse, simulation of energy consumption next day of based on weather forecast parameter respectively for identical building, and carried out the comparison analysis of 2 kinds of simulation of energy consumption results, can find to use the load extreme value of existing meteorologic parameter storehouse simulation generation and accumulative load, load deviation is measured more than 75% with reality. and the result of simulation of energy consumption next day of based on weather forecast parameter is the most identical with actual load, the deviation ratio of load extreme value and aggregate-value is all within 5%.Next day of based on weather forecast parameter simulation of energy consumption result closer to actual condition, can better meet ice cold-storage engineering carry out accurately, science, the requirement of economic control.
About the formulation of Control Strategy of Iced Storage-cold System, typically there are following 2 kinds of operating modes relatively common.
Operating mode (1): when adding up refrigeration duty the next day predicted by simulation of energy consumption less than or equal to system maximum cold storage capacity, ice-reserving operation reserve is: after the paddy electricity moment starts, immediately begin to Double-working-condition refrigeration host computer ice-make mode run, open Double-working-condition main frame and run ice-reserving by ice making operating mode, start simultaneously at eg pump, cooling water pump, when the semen donors of accumulative ice-reserving can meet add up refrigeration duty next day time, armamentarium is out of service.Ice melting operation strategy is: whole day is run with Ice Storage Tank cooling mode, until one day cooling terminates.
Operating mode (2): when adding up refrigeration duty the next day predicted by simulation of energy consumption more than system maximum cold storage capacity, ice-reserving operation reserve is: after the paddy electricity moment starts, immediately begin to Double-working-condition refrigeration host computer ice-make mode run, only to Ice Storage Tank reach maximum ice storage amount time, armamentarium is out of service.Ice melting operation strategy is: whole day was run with Ice Storage Tank cooling mode in the peak electricity period that electricity price is the highest, melts to the greatest extent until Ice Storage Tank deposits ice, then switches to Double-working-condition refrigeration host computer cooling mode.Meanwhile, if exceed the maximum semen donors of Ice Storage Tank in the refrigeration duty of peak electricity period system, Double-working-condition refrigeration host computer need to be opened simultaneously, run with Ice Storage Tank cooling mode simultaneously with Double-working-condition refrigeration host computer.
Existing ice cold-storage control system based on programmable logic controller (PLC) (PLC) does not sets automatic control and simulation framework, do not obtain the function of weather forecast parameter from weather forecast server, cannot be carried out system simulation of energy consumption next day yet and formulate rational system running policy according to analog result.
Summary of the invention
It is an object of the invention to provide a kind of ice cold-storage control system with simulation of energy consumption function next day, use weather forecast parameter to carry out the simulation of energy consumption of next day, to improve ice-storage system operational efficiency, save systematic running cost and use.
It is an object of the invention to be achieved through the following technical solutions:
A kind of ice cold-storage control system with simulation of energy consumption function next day, including automatic control and simulation framework, described automatic control and simulation framework are connected by the Internet weather forecast server, automatic control and simulation framework are connected by communication module programmable logic controller (PLC), programmable logic controller (PLC) connects chilled water temperature measurement module, chilled water flow measurement module, ethylene glycol temperature-measuring module, 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；Double-working-condition host computer control module, chilled water pump control module, cooling water pump control module, eg pump control module connect Double-working-condition main frame, chilled water pump, cooling water pump, eg pump respectively.
Further, described ice thickness sensor is electrode type ice thickness sensor, for the ice thickness on the static Ice Storage Tank inner coil pipe surface of measurement in real time.
Further, described electricity gauge table is the three-phase intelligent type time-sharing ammeter of band communication interface, for the power consumption of measurement ice-storage system in real time.
Further, described automatic control and simulation framework can download the weather forecast data of next day from weather forecast server by the Internet, automatic control and simulation framework transmit, according to described programmable logic controller (PLC), the various measured values of coming, and send control instruction according to default control program to programmable logic controller (PLC).
Further, described in described programmable logic controller (PLC) timing acquiring, chilled water temperature measurement module, chilled water flow measurement module, ethylene glycol temperature-measuring module, glycol flow measurement module, ice thickness sensor and the data of electricity gauge table, be 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, send control instruction 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, control Double-working-condition main frame, chilled water pump, cooling water pump, the start and stop of eg pump.
The invention have the benefit that the simulation of energy consumption that weather forecast parameter can be used to carry out next day, order of accuarcy to ice-storage system load prediction is far above the prior art of use history meteorologic parameter, and the control strategy of the present invention is based on the formulation of ice-storage system load prediction accurately, load prediction is accurate, controls scientific and reasonable, can improve ice-storage system operational efficiency, saving systematic running cost is used, and can install additional on the basis of existing ice-storage system, initial cost is low, has wide range of applications；The present invention is provided with ice thickness sensor, can the most accurately measure the ice thickness on static Ice Storage Tank inner coil pipe surface, provides ice storage amount parameter for automatic control and simulation framework, controls to provide foundation for systematic science, and is easy to operational management personnel and grasps ice storage amount；The present invention is provided with electricity gauge table can measure the power consumption of ice-storage system in real time, it is simple to the energy consumption of system is monitored by operational management personnel.
Accompanying drawing explanation
Below according to accompanying drawing, the present invention is described in further detail.
Fig. 1 is the structured flowchart of the ice cold-storage control system described in the embodiment of the present invention with 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, glycol flow measurement module；5, ice thickness sensor；6, electricity 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, the Internet；15, weather forecast server.
Detailed description of the invention
As shown in Figure 1, the ice cold-storage control system with simulation of energy consumption function next day described in the embodiment of the present invention, including automatic control and simulation framework 13, described automatic control and simulation framework 13 are connected by the Internet 14 weather forecast server 15, automatic control and simulation framework 13 are connected by communication module 12 programmable logic controller (PLC) 11, programmable logic controller (PLC) 11 connects chilled water temperature measurement module 1, chilled water flow measurement module 2, ethylene glycol temperature-measuring module 3, 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 Double-working-condition main frame, chilled water pump, cooling water pump, eg pump respectively；
Described ice thickness sensor 5 is electrode type ice thickness sensor, for the ice thickness on the static Ice Storage Tank inner coil pipe surface of measurement in real time；Described electricity gauge table 6 is the three-phase intelligent type time-sharing ammeter of band communication interface, for the power consumption of measurement ice-storage system in real time.；Described automatic control and simulation framework 13 can download the weather forecast data of next day from weather forecast server 15 by the Internet 14, described automatic control and simulation framework 13 transmit, according to described programmable logic controller (PLC) 11, the various measured values of coming, and 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, glycol flow measurement module 4, ice thickness sensor 5 and the data of electricity gauge table 6, it is sent to automatic control and simulation framework 13 by communication module 12, 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 sends control instruction, control Double-working-condition main frame, chilled water pump, cooling water pump, the start and stop of eg pump.
When the present invention is specifically used: described weather forecast server 15 can be server or the authoritative media server of issue weather forecast data of the Public meteorology forecast website of various places weather bureau.Automatic control and simulation framework 13 can download the weather forecast data of next day from weather forecast server 15 by the Internet 14.The weather forecast data of next day include temperature next day, relative humidity next day, intensity of solar radiation next day, rain fall next day etc..Automatic control of the present invention and simulation framework 13 can use general commercial computer (such as Dell Precision
T5600<Xeon E5-2603/4GB/250GB>) install acquisition after existing various simulation of energy consumption software and control software additional.The compatibility of consideration system and extensibility, the operating system of automatic control and simulation framework 13 can use common Win7 operating system.Simulation of energy consumption software is optional can be by disclosing the DeST-Standard software of the domestic research and development that channel freely obtains or external Energyplus software.
After the weather forecast data obtaining next day, ice-storage system operator use automatic control and simulation framework 13, by the meteorologic parameter storehouse of meteorologic parameter write next day 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, operator can the secondary daily load of Accurate Prediction ice-storage system, and formulate the operation reserve of ice-storage system next day according to this load.Such as, when analog result shows that adding up refrigeration duty next day is less than system maximum cold storage capacity, ice-reserving operation reserve is: after the paddy electricity moment starts, open Double-working-condition main frame immediately and run ice-reserving by ice making operating mode, start simultaneously at eg pump, cooling water pump, when the semen donors of accumulative ice-reserving can meet add up refrigeration duty next day time, armamentarium is out of service.Ice-reserving or ice melting operation strategy in the case of other are various 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, and this industrial control software available controls interface according to by the feature establishment of open skilled worker's journey, writes control program according to established operation reserve.
Ice-storage system typically has Double-working-condition main frame ice-make mode, main frame base load or Double-working-condition main frame cooling mode, main frame base load or Double-working-condition main frame and four kinds of operational modes such as Ice Storage Tank air conditioning pattern, Ice Storage Tank ice-melt cooling mode.The operation side of ice-storage system content slightly is mainly control system and switches between these four operational mode.When applying the present invention, can operation reserve under the load condition of various different buildings prepared in advance and the control program for this operation reserve, and form " operation reserve and control program library " in they are stored in 13, automatic control and simulation framework.
After automatic control and simulation framework 13 are downloaded the weather forecast data of next day from weather forecast server 15 and are completed simulation of energy consumption, operator directly can select, at " operation reserve and control program library ", the operation reserve being suitable for according to simulation of energy consumption, the result of energy consumption prediction and control program and as the operation reserve of next day and control program.After utilizing prior art application programming, this process can also be carried out in automatic control and simulation framework 13 automatically, it is not necessary to manual operation.Establishment " operation reserve and control program library " the on-site electrovalence policy of the system that should be taken into account.
Described programmable logic controller (PLC) 11 can use the existing matured products such as S7400PLC, utilizes the developing instrument such as S7-PLCSIM V5.4 of the supporting offer of PLC producer, works out PLC control program by existing public technology according to requirement of engineering.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under the enlightenment of the present invention; though but in its shape or structure, make any change, every have same as the present application or akin technical scheme, within all falling within protection scope of the present invention.
Claims (5)
1. an ice cold-storage control system with simulation of energy consumption function next day, including automatic control and simulation framework (13), it is characterized in that: described automatic control and simulation framework (13) are connected by the Internet (14) weather forecast server (15), automatic control and simulation framework (13) are connected by communication module (12) programmable logic controller (PLC) (11), programmable logic controller (PLC) (11) connects chilled water temperature measurement module (1), chilled water flow measurement module (2), ethylene glycol temperature-measuring module (3), 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 Double-working-condition main frame, chilled water pump, cooling water pump, eg pump respectively；Described automatic control and simulation framework (13) download the weather forecast data of next day by the Internet (14) from weather forecast server (15)；Described automatic control and simulation framework (13) transmit, according to described programmable logic controller (PLC) (11), the various measured values of coming, and send control instruction according to default control program to programmable logic controller (PLC) (11)；Described in described programmable logic controller (PLC) (11) timing acquiring, chilled water temperature measurement module (1), chilled water flow measurement module (2), ethylene glycol temperature-measuring module (3), glycol flow measurement module (4), ice thickness sensor (5) and the data of electricity gauge table (6), be sent to automatic control and simulation framework (13) by communication module (12)；The control instruction that described programmable logic controller (PLC) (11) sends according to automatic control and simulation framework (13), send control instruction 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), control Double-working-condition main frame, chilled water pump, cooling water pump, the start and stop of eg pump；Described automatic control and simulation framework (13) use general commercial computer to obtain after installing existing simulation of energy consumption software additional and controlling software, can carry out simulation of energy consumption next day of building.
The ice cold-storage control system with simulation of energy consumption function next day the most according to claim 1, it is characterised in that: described ice thickness sensor (5) is electrode type ice thickness sensor.
The ice cold-storage control system with simulation of energy consumption function next day the most according to claim 2, it is characterised in that: described ice thickness sensor (5) is for the ice thickness on the static Ice Storage Tank inner coil pipe surface of measurement in real time.
The ice cold-storage control system with simulation of energy consumption function next day the most according to claim 1, it is characterised in that: described electricity gauge table (6) is the three-phase intelligent type time-sharing ammeter of band communication interface.
The ice cold-storage control system with simulation of energy consumption function next day the most according to claim 4, it is characterised in that: described electricity gauge table (6) is for the power consumption of measurement ice-storage system in real time.
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| CN106403102A (en) * | 2016-09-05 | 2017-02-15 | 珠海格力电器股份有限公司 | Intelligent energy control method, device and system |
| CN107062475A (en) * | 2017-03-27 | 2017-08-18 | 国网天津市电力公司 | A kind of ice-storage air-conditioning economic benefit on-line monitoring method |
| CN108053064A (en) * | 2017-12-11 | 2018-05-18 | 天津天大求实电力新技术股份有限公司 | Electric cold accumulation load prediction method |
| CN109028393A (en) * | 2018-06-20 | 2018-12-18 | 安徽南国机电科技发展有限公司 | A kind of air conditioner cold accumulation temperature control system and method |
| CN108800449A (en) * | 2018-06-20 | 2018-11-13 | 安徽南国机电科技发展有限公司 | Air-conditioner energy-accumulation control system and method |
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| CN109945370B (en) * | 2019-04-08 | 2021-01-15 | 四川国锐工程设计有限公司 | Ice cold-storage energy storage system |
| CN112797517A (en) * | 2020-09-09 | 2021-05-14 | 峰华节能(深圳)有限公司 | Ice cold storage, warm storage and hot storage air conditioning system controlled by weather forecast time, temperature and liquid level |
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