CN103277875B - Energy-saving control system for refrigeration plant room - Google Patents
Energy-saving control system for refrigeration plant room Download PDFInfo
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- CN103277875B CN103277875B CN201310246889.7A CN201310246889A CN103277875B CN 103277875 B CN103277875 B CN 103277875B CN 201310246889 A CN201310246889 A CN 201310246889A CN 103277875 B CN103277875 B CN 103277875B
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Abstract
The invention relates to an energy-saving control system for a refrigeration plant room. The energy-saving control system comprises a demand forecasting system, an intelligent optimizing system and a programmable controller, the demand forecasting system is used for analyzing data such as temperature, humidity, pressure and flow acquired by a field controller from the refrigeration plant room, forecasting load and estimating parameters, and the intelligent optimizing system is used for analyzing tail end load and outdoor environment conditions, forming fitting functions of performance and operating parameters of a water chilling unit, a chilled water pump and a cooling water pump, matching running modes of a cooling tower, obtaining preliminary results by the aid of a mathematical model, intelligently optimizing the preliminary results to obtain optimal running results of the refrigeration plant room and selectively outputting the optimal running results to the programmable controller. The programmable controller is used for controlling the frequency of each device in the refrigeration plant room, so that each device runs at the lowest energy consumption, and energy is saved.
Description
Technical field
The present invention relates to a kind of refrigerator room energy-saving control system.
Background technology
China in Recent Years many big and medium-sized cities electricity shortage phenomenon is on the rise, and the power consumption of summer air-conditioning equipment is on peak
When even consume about 40% urban electric power supply, therefore using electricity wisely is extremely urgent.
Electric power changes of air conditioners due to building depends on the energy consumption of whole air conditioning system, therefore not only needs to improve air-conditioning equipment originally
The efficiency of body, and design of air conditioning to be optimized, reduce the overall energy consumption of building air-conditioner system.The chilled water system of building air-conditioner
Generally comprise several main energy-consuming parts such as handpiece Water Chilling Units, cooling tower, chilled water pump and cooling water pump.How to control cooling-water machine
The stop frequency of group, cooling tower, chilled water pump and cooling water pump, to reach the purpose of saves energy, this needs to optimize air-conditioning system
The design of system, the energy consumption to reduce whole system for the allocation proportion of system energy consumption shared by each part of adjustment.
Content of the invention
For solving the problems, such as prior art, the invention provides a kind of refrigerator room energy-saving control system.
The present invention is achieved through the following technical solutions：The present invention includes demand forecast system, intelligent optimization system and can
Programmable controller, temperature that described demand forecast system is gathered from refrigerator room equipment to field controller, humidity, pressure,
The data such as flow are analyzed, and load is predicted, and parameter is estimated；Described intelligent optimization system to end load and
Outdoor environment situation is analyzed, and to handpiece Water Chilling Units, chilled water pump, cooling water pump performance and operational factor are fitted function,
Coupling cooling tower operational mode, draw PRELIMINARY RESULTS with mathematical model, PRELIMINARY RESULTS is carried out intelligent optimization computing draw cold
Freeze machine room optimized operation result, and optional export to Programmable Logic Controller；Described Programmable Logic Controller and refrigerator room equipment,
Sensor for measuring temperature, pressure measurement sensor, flow measuring sensor, frequency-converting control device, pipe switch valve, current are adjusted
Valve connects, and controllable refrigerator room equipment is opened, stopped, and also can control frequency-converting control device, pipe switch valve, flow control valve
Operating.
A kind of refrigerator room energy-saving control system, also includes environmental monitoring system, this system can gather end load and
Outdoor environment situation, is analyzed processing to the data of collection and stores, and transfer data to demand forecast system and intelligence
Optimization system.
A kind of refrigerator room energy-saving control system, also include respectively with demand forecast system, intelligent optimization system and can compiling
Water chilling unit system, refrigated cooling water pump system and cooling tower systems that range controller is connected；Described water chilling unit system pair
The species of the handpiece Water Chilling Units of refrigerator room, type, cold, brand, model and quantity are configured, and can gather handpiece Water Chilling Units
Performance parameter, including chilled water out temperature, chilled-water flow, cooling water outlet and inlet temperature, cooling water flow, compressor frequency
Rate, compressor inlet and outlet pressure, the parameter such as compressor oil pressure；Described refrigated cooling water pump system need to be to the chilled water of refrigerator room
The configuration of the species of pump and cooling water pump, brand, flow, lift, power, model and quantity, described cooling tower systems are to freezing
The operational mode of the cooling tower of machine room is configured, and according to the cooling tower of fridge machine room, cooling tower systems provide often
Regulation frequency pattern, height pattern, the common Three models of energy-saving frequency conversion pattern are to meet different types of refrigerator room.
A kind of refrigerator room energy-saving control system, also includes Enerefsys refrigerator room energy consumption analysis decision system, described
System by the analysis to end load and outdoor environment, by handpiece Water Chilling Units, chilled water pump, chilled water pump and cooling tower frequency
Rate is accurately adjusted.
The invention has the beneficial effects as follows：The demand forecast system of the present invention can pass through the load data of collection site equipment
It can be anticipated that load value in a short time, and draw refrigerator room optimized operation result using intelligent optimization system optimization, intelligence
Optimal result is exported to Programmable Logic Controller by optimization system, the frequency of each equipment in Controlled by Programmable Controller refrigerator room
Each equipment is made to run under lowest energy consumption, the expenditure realized energy-conservation with this and reduce energy consumption cost.
Brief description
Fig. 1 is the structured flowchart of the present invention；
Fig. 2 is the operation logic block diagram of environmental monitoring system；
Fig. 3 is the operation logic block diagram of water chilling unit system；
Fig. 4 is the operation logic block diagram of refrigated cooling water pump system；
Fig. 5 is the operation logic block diagram of cooling tower systems；
Fig. 6 is the operation logic block diagram of intelligent optimization system；
Fig. 7 is the operation logic block diagram of Enerefsys refrigerator room energy consumption analysis decision system.
Specific embodiment
As shown in figures 1 to 6, the present invention includes demand forecast system, intelligent optimization system and Programmable Logic Controller, described
The data such as temperature that demand forecast system is gathered from refrigerator room equipment to field controller, humidity, pressure, flow are carried out point
Analysis, is predicted to load, parameter is estimated；Described intelligent optimization system is carried out to end load and outdoor environment situation
Analysis, to handpiece Water Chilling Units, chilled water pump, cooling water pump performance and operational factor are fitted function, and coupling cooling tower runs mould
Formula, draws PRELIMINARY RESULTS with mathematical model, PRELIMINARY RESULTS is carried out with intelligent optimization computing and show that refrigerator room optimized operation is tied
Really, and optional export to Programmable Logic Controller；Described Programmable Logic Controller and refrigerator room equipment, sensor for measuring temperature,
Pressure measurement sensor, flow measuring sensor, frequency-converting control device, pipe switch valve, flow control valve connect, and can control
Refrigerator room equipment is opened, is stopped, and also can control frequency-converting control device, pipe switch valve, the operating of flow control valve.
As shown in Fig. 2 a kind of refrigerator room energy-saving control system, also include environmental monitoring system, this system can gather
End load and outdoor environment situation, are analyzed processing to the data of collection and store, and transfer data to requirement forecasting
System and intelligent optimization system.
Environmental monitoring system need to be to building type, the floor area of building, peakload, day the building cooling such as cooling hour
Profile parameters configure.To electricity price type, the power information such as tou power price configures.
Environmental monitoring system can gather end load and outdoor environment situation, and the data of collection is analyzed processing
And storage.
A kind of refrigerator room energy-saving control system, also include respectively with demand forecast system, intelligent optimization system and can compiling
Water chilling unit system, refrigated cooling water pump system and cooling tower systems that range controller is connected；
As shown in figure 3, the species of the handpiece Water Chilling Units to refrigerator room for the described water chilling unit system, type, cold, brand,
Model and quantity are configured, and can gather the performance parameter of handpiece Water Chilling Units, including chilled water out temperature, chilled water flow
Amount, cooling water outlet and inlet temperature, cooling water flow, compressor frequency, compressor inlet and outlet pressure, the parameter such as compressor oil pressure；
As shown in figure 4, described refrigated cooling water pump system need to the species of the chilled water pump of refrigerator room and cooling water pump,
The configuration of brand, flow, lift, power, model and quantity.
As shown in figure 5, the operational mode of the cooling tower to refrigerator room for the described cooling tower systems configures, according to freezing
The cooling tower of machine machine room, cooling tower systems provide routine and determine frequency pattern, height pattern, totally three kinds of energy-saving frequency conversion pattern
Pattern is to meet different types of refrigerator room.
As shown in fig. 7, a kind of refrigerator room energy-saving control system, also include Enerefsys refrigerator room energy consumption analysis and determine
Plan system, described system by the analysis to end load and outdoor environment, by handpiece Water Chilling Units, chilled water pump, chilled water
Pump and cooling tower frequency are accurately adjusted.
Intelligent optimization system passes through OPC protocol with Programmable Logic Controller.Using programmed algorithm design, using most
It is the judgement sentence of logical structure, also sequential organization, also when type loop structure.
When the algorithm routine example of type round-robin algorithm is as follows：
Var i, k：integer；
begin
i=10；
k=0；
while（i>=10）and(i<=30)do
begin
k=k+i
i=i+2
end;
writeln(s:5,a:5,n:5);
end
This algorithm is simple, convenient operation, and easy left-hand seat facilitates the operation of operator.
Meeting in the case that data acquisition finishes, conventional system is simulated calculating to refrigerator room energy consumption, will not be right
The performance of each equipment and operational factor are fitted function, will not use mathematical model, load can only be judged.Freezing
Machine room conventional result is in the case of each equipment is in determining frequency, and the cold that refrigerator room provides is typically much deeper than end load
Operation result.This refrigerator room system energy utilization rate is low, but generally applies to present refrigerator room.
Meeting in the case that data acquisition finishes, intelligent optimization system can be carried out to end load and outdoor environment situation
Analysis, to handpiece Water Chilling Units, chilled water pump, cooling water pump performance and operational factor are fitted function, and coupling cooling tower runs mould
Formula, draws PRELIMINARY RESULTS with mathematical model, PRELIMINARY RESULTS is carried out with intelligent optimization computing and show that refrigerator room optimized operation is tied
Really, and optional export to Programmable Logic Controller.Meeting in the case that data acquisition finishes, the temperature of the outer wet bulb of certain given chamber
Lower it is known that in the case of end load, single calculation draw refrigerator room lowest energy consumption, cooling water flow, handpiece Water Chilling Units load,
Handpiece Water Chilling Units open number of units, handpiece Water Chilling Units energy consumption, the result such as cooling water pump energy consumption, chilled water pump energy consumption, cooling tower state.
Also include storing the Historical Data System of historical data, it can be inquired about to stored data,
Report generation.Summation to annual system total load, total energy consumption, total electricity bill and total energy consumption.Historical Data System is annual to history
Load is analyzed, and the load in conjunction with Real-time Collection and outdoor environment situation carry out load prediction.
According to the above description, can achieve the solution of the present invention in conjunction with art technology.
Claims (2)
1. a kind of refrigerator room energy-saving control system it is characterised in that：Including demand forecast system, intelligent optimization system and can compiling
Range controller, temperature that described demand forecast system is gathered from refrigerator room equipment to field controller, humidity, pressure, stream
Amount data is analyzed, and load is predicted, parameter is estimated；Described intelligent optimization system is to end load and outdoor
Ambient conditions is analyzed, and to handpiece Water Chilling Units, chilled water pump, cooling water pump performance and operational factor are fitted function, coupling
Cooling tower operational mode, draws PRELIMINARY RESULTS with mathematical model, carries out intelligent optimization computing to PRELIMINARY RESULTS and draws fridge
Room optimized operation result, and export to Programmable Logic Controller；Described Programmable Logic Controller and refrigerator room equipment, temperature survey
Sensor, pressure measurement sensor, flow measuring sensor, frequency-converting control device, pipe switch valve, flow control valve connect,
And control refrigerator room equipment to open, stop, control frequency-converting control device, pipe switch valve, the operating of flow control valve；Also include ring
Border monitoring system, this system can gather end load and outdoor environment situation, and the data of collection is analyzed processing and depositing
Storage, and transfer data to demand forecast system and intelligent optimization system；Also include respectively with demand forecast system, intelligent optimization
Water chilling unit system, refrigated cooling water pump system and cooling tower systems that system is connected with Programmable Logic Controller；Described cold water
The species of the handpiece Water Chilling Units to refrigerator room for the machine set system, type, cold, brand, model and quantity configure, and can gather
The performance parameter of handpiece Water Chilling Units, including chilled water out temperature, chilled-water flow, cooling water outlet and inlet temperature, cools down current
Amount, compressor frequency, compressor inlet and outlet pressure, compressor oil pressure parameter；Described refrigated cooling water pump system need to be to fridge
The species of the chilled water pump in room and cooling water pump, brand, flow, lift, power, model and quantity are configured, described cooling
The operational mode of the cooling tower to refrigerator room for the Tower System configures, according to the cooling tower of fridge machine room, cooling tower
System provides routine and determines frequency pattern, height pattern, and the common Three models of energy-saving frequency conversion pattern are to meet different types of freezing
Machine room.
2. as claimed in claim 1 a kind of refrigerator room energy-saving control system it is characterised in that：Also include Enerefsys cold
Freeze energy consumption of machine room analysis and decision system, described system by the analysis to end load and outdoor environment, by handpiece Water Chilling Units,
Chilled water pump, cooling water pump and cooling tower frequency are accurately adjusted.
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| CN201310246889.7A CN103277875B (en) | 2013-06-21 | 2013-06-21 | Energy-saving control system for refrigeration plant room |
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| CN201310246889.7A CN103277875B (en) | 2013-06-21 | 2013-06-21 | Energy-saving control system for refrigeration plant room |
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| CN103277875B true CN103277875B (en) | 2017-02-08 |
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