CN105466092A - Method and system for distributing cold energy of main refrigeration machine of distributed energy station - Google Patents

Method and system for distributing cold energy of main refrigeration machine of distributed energy station Download PDF

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Publication number
CN105466092A
CN105466092A CN201510719005.4A CN201510719005A CN105466092A CN 105466092 A CN105466092 A CN 105466092A CN 201510719005 A CN201510719005 A CN 201510719005A CN 105466092 A CN105466092 A CN 105466092A
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China
Prior art keywords
cost
host computer
refrigeration
cooling
life cycle
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黄挺
孙文龙
曹园树
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China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
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China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
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Priority to CN201510719005.4A priority Critical patent/CN105466092A/en
Publication of CN105466092A publication Critical patent/CN105466092A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/19—Calculation of parameters

Abstract

The invention provides a method for distributing cold energy of a main refrigeration machine of a distributed energy station. The method comprises the following steps: analyzing load of the main refrigeration machine through energy consumption simulation so as to obtain load parameters; calculating original investment cost and annual operating cost of the distributed energy station under the conditions of various set cold supply proportions according to the load parameters; acquiring life cycle; obtaining whole life cycle costs of the distributed energy station under the conditions of the various set cold supply proportions according to the original investment cost, the annual operating cost and the life cycle; and comparing the whole life cycle costs of the distributed energy station under the conditions of the various set cold supply proportions, and determining the cold energy distribution proportion of the main refrigeration machine of the distributed energy station according to the comparison result. According to the method, the cold energy is not distributed simply according to proportions selected by experience or according to waste heat, the cold energy of the main refrigeration machine of the distributed energy station is scientifically distributed after factors such as load characteristics, investment cost, annular operating cost and life cycle of the distributed energy station are considered comprehensively, so that resources are utilized reasonably, and the whole system has the maximum economy.

Description

Distributed busbar protection refrigeration host computer cold distribution method and system
Technical field
The present invention relates to energy source station powering device technical field, particularly relate to a kind of distributed busbar protection refrigeration host computer cold distribution method and system.
Background technology
Current, energy source station relies on its characteristic such as novel, efficient, clean, and particularly it can realize the superiority of hot and cold, electric trilogy supply, and referred very high development highly.As one of system topmost in distributed busbar protection combined supply system, the Optimization of Energy Saving design of regional cold supply system, by the emphasis discussed as industry and study.
The research designed about the Optimization of Energy Saving of regional cold supply system mainly concentrates on the optimization of transmission and distribution network, the economic analysis of system, running Optimization control, in the optimized Selection of refrigeration host computer etc.Transmission and distribution network aspect, researcher mainly studies the aspects such as Cooling radius, external channeling, pipe network flow velocity and the choice of diameter.About the economic analysis of system, research both at home and abroad have also been made many research, and mainly comparison domain cooling and conventional system, analyzes its energy consumption and initial cost, points out the approach improving its economy.From the angle that running optimizatin controls, researcher analyzes the operating scheme optimization of district cooling and best cooling area etc.At present, less about the document of refrigeration host computer optimized Selection in energy source station, be not also the cold allocation optimized research both when electric refrigerating machine and hot water lithium bromide refrigeration machine for refrigeration host computer.How scientifically to determine electrical chillers and hot water lithium bromide refrigeration unit cold allocation proportion, and the influence factor of the rational allocation proportion of further investigated, become the common difficulty of designer.
The more a kind of distribution method of existing employing is direct proportionate allocation, the method directly determines electric refrigerating machine and hot water lithium bromide refrigeration machine allocation proportion according to engineering experience, calculate the maximum cold load of project again according to simple static load, and then the cold obtaining refrigeration host computer distributes.Another kind is waste heat precedence method, according to the principle preferentially utilizing waste heat, first determine the load of hot water lithium bromide refrigeration machine, and then determine the load of electric refrigerating machine, then calculate the maximum cold load of project according to simple static load, and then the cold obtaining electric refrigeration host computer distributes.
Above-mentioned two kinds of methods are rule of thumb to distribute electric refrigerating machine and hot water lithium bromide refrigeration machine simply distributes, by experience impact comparatively, point being equipped with of science can not be carried out to refrigeration host computer cold and make rational use of resources.
Summary of the invention
Based on this, be necessary providing a kind of science to distribute and the distributed busbar protection refrigeration host computer cold distribution method of making rational use of resources.
A kind of distributed busbar protection refrigeration host computer cold distribution method, comprising:
By simulation of energy consumption, analysis is carried out to the load of refrigeration host computer and obtain load parameter;
According to the initial cost cost of load parameter Computation distribution formula energy source station under each setting cooling ratio and annual operating cost;
Obtain life cycle;
Obtain distributed energy according to initial cost cost, annual operating cost and life cycle and stand in Life cycle cost under each setting cooling ratio;
Comparison distributed energy stands in the Life cycle cost under each setting cooling ratio, and according to comparative result determination distributed busbar protection refrigeration host computer cold allocation proportion.
Wherein in a kind of embodiment, the step being obtained load parameter by the load analysis of simulation of energy consumption to refrigeration host computer is comprised:
The load data of refrigeration host computer is obtained by simulation of energy consumption;
Carry out analysis to load data and obtain load parameter, load parameter comprises for refrigeration duty, cooling rate of load condensate and cooling hourage.
Wherein in a kind of embodiment, comprise according to the initial cost cost of load parameter Computation distribution formula energy source station under each setting cooling ratio and annual operating cost step:
The power consumption power of Computation distribution formula energy source station;
According to the initial cost cost stood in for refrigeration duty and power consumption power calculation distributed energy under each setting cooling ratio;
The annual operating cost under each setting cooling ratio according to cooling rate of load condensate and cooling hourage Computation distribution formula energy source station.
Wherein in a kind of embodiment, the refrigeration host computer of distributed busbar protection comprises electric refrigeration host computer and hot water lithium bromide refrigeration host computer;
Initial cost cost comprises: hot water lithium bromide refrigeration unit initial cost cost, electrical chillers initial cost cost, lithium bromide refrigerating water system comprehensive initial cost cost, electric water refrigeration system comprehensive initial cost cost and electric power apparatus integrated initial cost cost;
Annual operating cost comprises: hot water lithium bromide refrigerator operation expense, electric refrigerating machine operating cost, chilled water pump operating cost, lithium bromide refrigerating cooling water pump operating cost, electricity refrigeration cooling water pump operating cost, lithium bromide refrigerating cooling tower operating cost and electricity refrigeration cooling tower operating cost.
Wherein in a kind of embodiment, the formula calculating Life cycle is:
C t = C + Y ( 1 + i ) n - 1 i ( 1 + i ) n ;
Wherein, C tfor Life cycle cost, unit is ten thousand yuan; I is interest rate; N is life cycle, and unit is year; C initial cost cost, unit is ten thousand yuan, and Y runs annual cost in year, and unit is ten thousand yuan.
The present invention also provides a kind of distributed busbar protection refrigeration host computer cold distribution system, comprising:
Analog module, obtains load parameter for carrying out analysis by simulation of energy consumption to the load of refrigeration host computer;
First computing module, for standing in Life cycle cost under each setting cooling ratio according to the initial cost cost of load parameter Computation distribution formula energy source station under each setting cooling ratio and annual running cost in order to obtain distributed energy;
Acquisition module, for obtaining life cycle;
Second computing module, stands in Life cycle cost under each setting cooling ratio for obtaining distributed energy according to initial cost cost, annual operating cost and life cycle;
Comparison module, stands in Life cycle cost under each setting cooling ratio for comparing distributed energy, and according to comparative result determination distributed busbar protection refrigeration host computer cold allocation proportion.
Wherein in a kind of embodiment, analog module comprises:
Analogue unit, for obtaining the load data of refrigeration host computer by simulation of energy consumption;
Analytic unit, obtains load parameter for carrying out analysis to load data, and load parameter comprises for refrigeration duty, cooling rate of load condensate and cooling hourage.
Wherein in a kind of embodiment, the first computing module comprises:
First computing unit, for the power consumption power of Computation distribution formula energy source station;
Second computing unit, for standing in the initial cost cost under each setting cooling ratio according to confession refrigeration duty and power consumption power calculation distributed energy;
3rd computing unit, for the annual operating cost under each setting cooling ratio according to cooling rate of load condensate and cooling hourage Computation distribution formula energy source station.
Wherein in a kind of embodiment, the refrigeration host computer of distributed busbar protection comprises electric refrigeration host computer and hot water lithium bromide refrigeration host computer;
Initial cost cost comprises: hot water lithium bromide refrigeration unit initial cost cost, electrical chillers initial cost cost, lithium bromide refrigerating water system comprehensive initial cost cost, electric water refrigeration system comprehensive initial cost cost and electric power apparatus integrated initial cost cost;
Annual operating cost comprises: hot water lithium bromide refrigerator operation expense, electric refrigerating machine operating cost, chilled water pump operating cost, lithium bromide refrigerating cooling water pump operating cost, electricity refrigeration cooling water pump operating cost, lithium bromide refrigerating cooling tower operating cost and electricity refrigeration cooling tower operating cost.
Wherein in a kind of embodiment, the formula calculating Life cycle is:
C t = C + Y ( 1 + i ) n - 1 i ( 1 + i ) n ;
Wherein, C tfor Life cycle cost, unit is ten thousand yuan; I is interest rate; N is life cycle, and unit is year; C initial cost cost, unit is ten thousand yuan, and Y runs annual cost in year, and unit is ten thousand yuan.
This distributed busbar protection refrigeration host computer cold distribution method, load parameter is obtained by simulation energy consumption, according to the initial cost cost of load parameter Computation distribution formula energy source station under different cooling ratio and annual running cost in order to obtain the Life cycle cost under all different cooling ratios, according to the result determination distributed busbar protection refrigeration host computer cold allocation proportion of the Life cycle cost under more all cooling ratios.The method is not empirically choose ratio simply or choose cold according to waste heat to distribute, but consider the factors such as its part throttle characteristics, cost of investment, annual running cost and life cycle, distributed busbar protection refrigeration host computer cold is scientifically distributed, to make rational use of resources and to make whole system have maximum economy.
Accompanying drawing explanation
Fig. 1 is a kind of flow chart of distributed busbar protection refrigeration host computer cold distribution method of embodiment;
Fig. 2 is the flow chart that a kind of simulation of energy consumption of implementation method obtains the method for load parameter;
Fig. 3 is a kind of simulation hourly load datagram of embodiment;
Fig. 4 is the flow chart of the method for cost of investment under each setting cooling ratio of a kind of Computation distribution formula energy source station of embodiment and annual operating cost;
Fig. 5 is a kind of functional module signal of a kind of distributed busbar protection refrigeration host computer cold distribution system of embodiment.
Detailed description of the invention
As shown in Figure 1, a kind of distributed busbar protection refrigeration host computer cold distribution method, comprising:
S10: by simulation of energy consumption, analysis is carried out to the load of refrigeration host computer and obtain load parameter.
Concrete, utilize the annual hourly load of DeST software to distributed busbar protection to simulate, obtain load parameter.
S30: according to the initial cost cost of load parameter Computation distribution formula energy source station under each setting cooling ratio and annual operating cost.
S50: obtain life cycle.
S70: obtain distributed energy according to initial cost cost, annual operating cost and life cycle and stand in Life cycle cost under each setting cooling ratio.
The refrigeration host computer of the distributed busbar protection of present embodiment comprises electric refrigeration host computer and hot water lithium bromide refrigeration host computer, and the distributed busbar protection refrigeration host computer cold of present embodiment distributes the cold being mainly used in electric refrigeration host computer and hot water lithium bromide refrigeration host computer and distributes.Each setting cooling ratio of hot water lithium bromide refrigeration host computer is initially 0, accordingly, the cooling ratio of electricity refrigeration host computer is initially 1, with cooling ratio change step for 5/1000ths, the initial cost cost of Computation distribution formula energy source station under each setting cooling ratio and operating cost obtain distributed energy stand in each setting cooling ratio under Life cycle cost.
S90: compare distributed energy stand in each setting cooling ratio under Life cycle cost, and according to comparative result determination distributed busbar protection refrigeration host computer cold allocation proportion.
The Life cycle cost that the distributed energy obtained stands under all setting cooling ratios is compared, obtain the cooling ratio of minimum Life cycle cost and reply hot water lithium bromide refrigeration host computer and electric refrigeration host computer, and according to the cooling ratio of this hot water lithium bromide refrigeration host computer and electric refrigeration host computer, distributed busbar protection refrigeration host computer cold is distributed.
This distributed busbar protection refrigeration host computer cold distribution method, load parameter is obtained by simulation energy consumption, according to the initial cost cost of load parameter Computation distribution formula energy source station under different cooling ratio and operating cost to obtain the Life cycle cost under all different cooling ratios, according to the result determination distributed busbar protection refrigeration host computer cold allocation proportion of the Life cycle cost under more all cooling ratios.The method is not empirically choose ratio simply or choose cold according to waste heat to distribute, but consider the factors such as its part throttle characteristics, cost of investment, annual running cost and life cycle, distributed busbar protection refrigeration host computer cold is scientifically distributed, to make rational use of resources and to make whole system have maximum economy.
In another embodiment, as shown in Figure 2, step S10 specifically comprises:
S11: the load data being obtained refrigeration host computer by simulation of energy consumption.
S12: carry out analysis to load data and obtain load parameter, load parameter comprises for refrigeration duty, cooling rate of load condensate and cooling hourage.
For certain teaching garden distributed busbar protection project of In Guangzhou Area.As shown in Figure 3, DeST software is utilized to simulate its annual hourly load.This project for cool time be April 15 to November 15, the running time of every day is 8:00-22:00, and total is 3150h for cool time.According to the result of simulation, the peak load of this project is 2670kW, rate of load condensate is divided into 8 intervals of 30% to 100%, adds up the hourage in each rate of load condensate interval, obtains cooling rate of load condensate and supplies cool time as shown in table 1.
Table 1 cooling rate of load condensate and hourage
In another embodiment, as shown in Figure 4, step S30 specifically comprises:
S31: the power consumption power of Computation distribution formula energy source station;
S32: according to the initial cost cost stood in for refrigeration duty and power consumption power calculation distributed energy under each setting cooling ratio;
S33: the annual operating cost under each setting cooling ratio according to cooling rate of load condensate and cooling hourage Computation distribution formula energy source station.
The refrigeration host computer system of distributed busbar protection mainly comprises chilled water system, cooling water system.Chilled water system capital equipment comprises electricity refrigeration cooling-water machine, lithium bromide refrigerating cooling-water machine, chilled water pump and each annex etc.; Cooling water system capital equipment comprises electricity refrigeration cooling-water machine, lithium bromide refrigerating cooling-water machine, cooling water pump, cooling tower and each annex etc.
The initial cost cost of refrigeration host computer system comprises initial cost cost and comprises: hot water lithium bromide refrigeration unit initial cost cost, electrical chillers initial cost cost, lithium bromide refrigerating water system comprehensive initial cost cost, electric water refrigeration system comprehensive initial cost cost become with electric power apparatus integrated initial cost.Lithium bromide refrigerating water system comprises chilled water pump, cooling water pump, cooling tower and pipe fitting thereof, and electric water refrigeration system comprises chilled water pump, cooling water pump, cooling tower and pipe fitting thereof.
The operating cost of refrigeration host computer system then comprises: hot water lithium bromide refrigerator operation expense, electric refrigerating machine operating cost, chilled water pump operating cost, lithium bromide refrigerating cooling water pump operating cost, electricity refrigeration cooling water pump operating cost, lithium bromide refrigerating cooling tower operating cost and electricity refrigeration cooling tower operating cost.
Concrete, the computing formula of hot water lithium bromide refrigeration unit initial cost cost is:
C 1＝arQ(1)
Wherein, C 1for hot water lithium bromide refrigeration unit initial cost cost, unit is ten thousand yuan; A is bromination reason refrigeration machine initial cost coefficient, and unit is ten thousand yuan/kW; R is bromination reason refrigeration machine cooling ratio; Q is distributed busbar protection cooling load, unit kW.
The computing formula of electrical chillers initial cost cost is:
C 2＝b(1-r)Q(2)
Wherein, C 2for electrical chillers initial cost cost, unit is ten thousand yuan; B is electric refrigerating machine initial cost coefficient, and unit is ten thousand yuan/kW.
The computing formula of the comprehensive initial cost cost of lithium bromide refrigerating water system is:
C 3＝crQ(3)
Wherein, C 3for the comprehensive initial cost cost of lithium bromide refrigerating water system, unit is ten thousand yuan; C is lithium bromide refrigerating water system comprehensive method of investment coefficient, and unit is ten thousand yuan/kW.
The computing formula of the comprehensive initial cost cost of electricity water refrigeration system is:
C 4＝d(1-r)Q(4)
Wherein, C 4for the comprehensive initial cost cost of electric water refrigeration system, unit is ten thousand yuan; D is electric water refrigeration system comprehensive method of investment coefficient, and unit is ten thousand yuan/kW.
The computing formula of electric power apparatus integrated initial cost cost is:
C 5＝eQ e(5)
Wherein, C 5for electric power apparatus integrated initial cost cost, unit is ten thousand yuan; E is electric power apparatus integrated initial cost coefficient, ten thousand yuan/kVA; Q efor whole system power consumption power, unit is kW.
The computing formula of hot water lithium bromide refrigerator operation expense is:
Y 1 = 0.0001 f Σ Q j r 1000 COP j r 1 c p Δ t t j r - - - ( 6 )
Wherein, Y1 is hot water lithium bromide refrigerator operation expense, and unit is ten thousand yuan; F is hot water price, and unit is unit/t; Qjr is that energy source station rate of load condensate is j and bromination reason refrigeration cooling ratio is the BrLi chiller refrigeration duty under r, and unit is kW; c pfor the specific heat at constant pressure of water, unit is kJ/ (kg DEG C); △ t is BrLi chiller supply backwater temperature difference, and unit is DEG C; t jrfor energy source station rate of load condensate is j and bromination reason refrigeration cooling ratio is the cooling hourage of the BrLi chiller under r, unit is h; COP jr1for energy source station rate of load condensate is j and bromination reason refrigeration cooling ratio is the coefficient of performance of the BrLi chiller under r.
The computing formula of electric refrigerating machine operating cost is:
Y 2 = 0.0001 g Σ Q j - Q j r COP j r 2 t j r 2 - - - ( 7 )
Wherein, Y 2for electric refrigerating machine operating cost, unit is ten thousand yuan; G is electricity price, and unit is unit/(kWh); t jr2for energy source station rate of load condensate is j and bromination reason refrigeration cooling ratio is the cooling hourage of the electrical chillers under r, unit is h; COP jr2for energy source station rate of load condensate is j and bromination reason refrigeration cooling ratio is the coefficient of performance of the electric refrigerating machine under r.
Y 3＝0.0001g∑hQ jt j(8)
The computing formula of chilled water pump operating cost is:
Wherein, Y3 is chilled water pump operating cost, and unit is ten thousand yuan; H is chilled water pump power consumption coefficient; The refrigeration duty that Qj is energy source station rate of load condensate when being j, unit is kW; t jfor cooling hourage when energy source station rate of load condensate is j, unit is h.
Y 4＝0.0001g∑k 1Q jt jr(9)
The computing formula of lithium bromide refrigerating cooling water pump operating cost is:
Wherein, Y 4for lithium bromide refrigerating cooling water pump operating cost, unit is ten thousand yuan; k 1for lithium bromide refrigerating cooling water pump power consumption coefficient.
Y 5＝0.0001g∑k 2Q jt jr2(10)
The computing formula of electricity refrigeration cooling water pump operating cost is:
Wherein, Y5 is electricity refrigeration cooling water pump operating cost, and unit is ten thousand yuan; K2 is electricity refrigeration cooling water pump power consumption coefficient.
Y 6＝0.0001g∑m 1Q jt jr(11)
The computing formula of lithium bromide refrigerating cooling tower operating cost is:
Wherein, Y 6for lithium bromide refrigerating cooling tower operating cost, unit is ten thousand yuan; m 1for lithium bromide refrigerating cooling tower power consumption coefficient.
Y 7＝0.0001g∑m 2Q jt jr2(12)
Wherein, Y 7for electricity refrigeration cooling tower operating cost, unit is ten thousand yuan; m 2for electricity refrigeration cooling tower power consumption coefficient.
Above-mentioned various in each coefficient value as shown in table 2.
Table 2 coefficient value
Under sub-load ratio in above formula, the refrigeration host computer coefficient of performance is as shown in table 3.
The refrigeration host computer coefficient of performance under table 3 sub-load ratio
The computing formula of the Life cycle cost of distributed busbar protection is:
C t = C + Y ( 1 + i ) n - 1 i ( 1 + i ) n ; - - - ( 13 )
Wherein, C tfor Life cycle cost, unit is ten thousand yuan; For interest rate; N is life cycle, and unit is year; C initial cost cost, C=C 1+ C 2+ C 3+ C 4+ C 5, unit is ten thousand yuan; Y runs annual cost, Y=Y in year 1+ Y 2+ Y 3+ Y 4+ Y 5+ Y 6+ Y 7, unit is ten thousand yuan.
This distributed busbar protection refrigeration host computer cold distribution method, based on model distributed busbar protection being carried out to annual hourly load, obtain its part throttle characteristics, and calculate the initial cost cost of distributed busbar protection refrigeration host computer under different cooling ratio in conjunction with this part throttle characteristics and annual operating cost obtains Life cycle cost, according to the result determination distributed busbar protection refrigeration host computer cold allocation proportion of the Life cycle cost under more all cooling ratios.The method is not empirically choose ratio simply or choose cold according to waste heat to distribute, but consider the factors such as its part throttle characteristics, cost of investment, annual running cost and life cycle, distributed busbar protection refrigeration host computer cold is scientifically distributed, to make rational use of resources and to make whole system have maximum economy.
The present invention also provides a kind of distributed busbar protection refrigeration host computer cold distribution system, as shown in Figure 5, comprising:
Analog module 10, obtains load parameter for carrying out analysis by simulation of energy consumption to the load of refrigeration host computer.
Concrete, utilize the annual hourly load of DeST software to distributed busbar protection to simulate, obtain load parameter.
First computing module 30, for standing in Life cycle cost under each setting cooling ratio according to the initial cost cost of load parameter Computation distribution formula energy source station under each setting cooling ratio and annual running cost in order to obtain distributed energy.
Acquisition module 50, for obtaining life cycle.
Second computing module 70, stands in Life cycle cost under each setting cooling ratio for obtaining distributed energy according to initial cost cost, annual operating cost and life cycle.
The refrigeration host computer of the distributed busbar protection of present embodiment comprises electric refrigeration host computer and hot water lithium bromide refrigeration host computer, and the distributed busbar protection refrigeration host computer cold of present embodiment distributes the cold being mainly used in electric refrigeration host computer and hot water lithium bromide refrigeration host computer and distributes.Each setting cooling ratio of hot water lithium bromide refrigeration host computer is initially 0, accordingly, the cooling ratio of electricity refrigeration host computer is initially 1, with cooling ratio change step for 5/1000ths, the initial cost cost of Computation distribution formula energy source station under each setting cooling ratio and operating cost obtain distributed energy stand in each setting cooling ratio under Life cycle cost.
Comparison module 90, stands in Life cycle cost under each setting cooling ratio and according to comparative result determination distributed busbar protection refrigeration host computer cold allocation proportion for comparing distributed energy.
The Life cycle cost that the distributed energy obtained stands under all setting cooling ratios is compared, obtain the cooling ratio of minimum Life cycle cost and corresponding hot water lithium bromide refrigeration host computer and electric refrigeration host computer, and according to the cooling ratio of this hot water lithium bromide refrigeration host computer and electric refrigeration host computer, distributed busbar protection refrigeration host computer cold is distributed.
This distributed busbar protection refrigeration host computer cold distribution system, load parameter is obtained by simulation energy consumption, according to the initial cost cost of load parameter Computation distribution formula energy source station under different cooling ratio and operating cost to obtain the Life cycle cost under all different cooling ratios, according to the result determination distributed busbar protection refrigeration host computer cold allocation proportion of the Life cycle cost under more all cooling ratios.This system is not empirically choose ratio simply or choose cold according to waste heat to distribute, but consider the factors such as its part throttle characteristics, cost of investment, annual running cost and life cycle, distributed busbar protection refrigeration host computer cold is scientifically distributed, to make rational use of resources and to make whole system have maximum economy.
In another embodiment, analog module 10 comprises:
Analogue unit, for obtaining the load data of refrigeration host computer by simulation of energy consumption.
Analytic unit, obtains load parameter for carrying out analysis to load data, and load parameter comprises for refrigeration duty, cooling rate of load condensate and cooling hourage.
For certain teaching garden distributed busbar protection project of In Guangzhou Area.As shown in Figure 1, DeST software is utilized to simulate its annual hourly load.This project for cool time be April 15 to November 15, the running time of every day is 8:00-22:00, and total is 3150h for cool time.According to the result of simulation, the peak load of this project is 2670kW, rate of load condensate is divided into 8 intervals of 30% to 100%, adds up the hourage in each rate of load condensate interval, obtains cooling rate of load condensate and supplies cool time as shown in table 1.
In another embodiment, the first computing module 30 comprises:
First computing unit, for the power consumption power of Computation distribution formula energy source station;
Second computing unit, for standing in the initial cost cost under each setting cooling ratio according to confession refrigeration duty and power consumption power calculation distributed energy;
3rd computing unit, for the annual operating cost under each setting cooling ratio according to cooling rate of load condensate and cooling hourage Computation distribution formula energy source station.
The refrigeration host computer system of distributed busbar protection mainly comprises chilled water system, cooling water system.Chilled water system capital equipment comprises electricity refrigeration cooling-water machine, lithium bromide refrigerating cooling-water machine, chilled water pump and each annex etc.; Cooling water system capital equipment comprises electricity refrigeration cooling-water machine, lithium bromide refrigerating cooling-water machine, cooling water pump, cooling tower and each annex etc.
The initial cost cost of refrigeration host computer system comprises refrigeration host computer initial cost cost, the comprehensive initial cost cost of water system and power equipment initial cost cost; Refrigeration host computer initial cost cost comprises: hot water lithium bromide refrigeration unit initial cost cost and electrical chillers initial cost cost; The comprehensive initial cost of water system comprises: the initial cost cost of lithium bromide refrigerating water system and electric water refrigeration system.Lithium bromide refrigerating water system comprises chilled water pump, cooling water pump, cooling tower and pipe fitting thereof, and electric water refrigeration system comprises chilled water pump, cooling water pump, cooling tower and pipe fitting thereof.
The operating cost of refrigeration host computer system then comprises: hot water lithium bromide refrigerator operation expense, electric refrigerating machine operating cost, chilled water pump operating cost, lithium bromide refrigerating cooling water pump operating cost, electricity refrigeration cooling water pump operating cost, lithium bromide refrigerating cooling tower operating cost and electricity refrigeration cooling tower operating cost.
Concrete, calculate initial cost cost, annual operating cost is identical with method part with the computing formula of life cycle cost, do not repeat them here.
This distributed busbar protection refrigeration host computer cold distribution system, based on model distributed busbar protection being carried out to annual hourly load, obtain its part throttle characteristics, and calculate the initial cost cost of distributed busbar protection refrigeration host computer under different cooling ratio in conjunction with this part throttle characteristics and annual operating cost obtains Life cycle cost, according to the result determination distributed busbar protection refrigeration host computer cold allocation proportion of the Life cycle cost under more all cooling ratios.This system is not empirically choose ratio simply or choose cold according to waste heat to distribute, but consider the factors such as its part throttle characteristics, cost of investment, annual running cost and life cycle, distributed busbar protection refrigeration host computer cold is scientifically distributed, to make rational use of resources and to make whole system have maximum economy.
Each technical characteristic of above embodiment can combine arbitrarily, for making description succinct, all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
Above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (10)

1. a distributed busbar protection refrigeration host computer cold distribution method, comprising:
By simulation of energy consumption, analysis is carried out to the load of described refrigeration host computer and obtain load parameter;
Calculate described distributed energy according to described load parameter and stand in initial cost cost under each setting cooling ratio and annual operating cost;
Obtain life cycle;
Obtain described distributed energy according to described initial cost cost, described annual operating cost and described life cycle and stand in Life cycle cost under each setting cooling ratio;
More described distributed energy stands in the Life cycle cost under each setting cooling ratio, and according to described comparative result determination distributed busbar protection refrigeration host computer cold allocation proportion.
2. distributed busbar protection refrigeration host computer cold distribution method according to claim 1, is characterized in that, the described step obtaining load parameter by the load analysis of simulation of energy consumption to described refrigeration host computer comprises:
The load data of described refrigeration host computer is obtained by simulation of energy consumption;
Carry out analysis to described load data and obtain described load parameter, described load parameter comprises for refrigeration duty, cooling rate of load condensate and cooling hourage.
3. distributed busbar protection refrigeration host computer cold distribution method according to claim 2, is characterized in that, describedly calculates described distributed energy according to described load parameter and stands in initial cost cost under each setting cooling ratio and annual operating cost step comprises:
Calculate the power consumption power of described distributed busbar protection;
Distributed energy described in refrigeration duty and described power consumption power calculation is supplied to stand in the initial cost cost under each setting cooling ratio according to described;
Calculate described distributed energy according to described cooling rate of load condensate and described cooling hourage and stand in annual operating cost under each setting cooling ratio.
4. distributed busbar protection refrigeration host computer cold distribution method according to claim 2, is characterized in that, the refrigeration host computer of described distributed busbar protection comprises electric refrigeration host computer and hot water lithium bromide refrigeration host computer;
Described initial cost cost comprises: hot water lithium bromide refrigeration unit initial cost cost, electrical chillers initial cost cost, lithium bromide refrigerating water system comprehensive initial cost cost, electric water refrigeration system comprehensive initial cost cost and electric power apparatus integrated initial cost cost;
Described annual operating cost comprises: hot water lithium bromide refrigerator operation expense, electric refrigerating machine operating cost, chilled water pump operating cost, lithium bromide refrigerating cooling water pump operating cost, electricity refrigeration cooling water pump operating cost, lithium bromide refrigerating cooling tower operating cost and electricity refrigeration cooling tower operating cost.
5. distributed busbar protection refrigeration host computer cold distribution method according to claim 3, it is characterized in that, the formula of described calculating Life cycle is:
C t = C + Y ( 1 + i ) n - 1 i ( 1 + i ) n ;
Wherein, C tfor Life cycle cost, unit is ten thousand yuan; I is interest rate; N is life cycle, and unit is year; C initial cost cost, unit is ten thousand yuan, and Y runs annual cost in year, and unit is ten thousand yuan.
6. a distributed busbar protection refrigeration host computer cold distribution system, comprising:
Analog module, obtains load parameter for carrying out analysis by simulation of energy consumption to the load of described refrigeration host computer;
First computing module, stands in initial cost cost under each setting cooling ratio and annual running cost and stands in Life cycle cost under each setting cooling ratio for calculating described distributed energy according to described load parameter in order to obtain described distributed energy;
Acquisition module, for obtaining life cycle;
Second computing module, stands in Life cycle cost under each setting cooling ratio for obtaining described distributed energy according to described initial cost cost, described annual operating cost and described life cycle;
Comparison module, stands in the Life cycle cost under each setting cooling ratio for more described distributed energy, and according to described comparative result determination distributed busbar protection refrigeration host computer cold allocation proportion.
7. distributed busbar protection refrigeration host computer cold distribution system according to claim 6, it is characterized in that, described analog module comprises:
Analogue unit, for obtaining the load data of described refrigeration host computer by simulation of energy consumption;
Analytic unit, obtains described load parameter for carrying out analysis to described load data, and described load parameter comprises for refrigeration duty, cooling rate of load condensate and cooling hourage.
8. distributed busbar protection refrigeration host computer cold distribution system according to claim 7, it is characterized in that, described first computing module comprises:
First computing unit, for calculating the power consumption power of described distributed busbar protection;
Second computing unit, for supplying distributed energy described in refrigeration duty and described power consumption power calculation to stand in the initial cost cost under each setting cooling ratio according to described;
3rd computing unit, stands in annual operating cost under each setting cooling ratio for calculating described distributed energy according to described cooling rate of load condensate and described cooling hourage.
9. distributed busbar protection refrigeration host computer cold distribution system according to claim 7, is characterized in that, the refrigeration host computer of described distributed busbar protection comprises electric refrigeration host computer and hot water lithium bromide refrigeration host computer;
Described initial cost cost comprises: hot water lithium bromide refrigeration unit initial cost cost, electrical chillers initial cost cost, lithium bromide refrigerating water system comprehensive initial cost cost, electric water refrigeration system comprehensive initial cost cost and electric power apparatus integrated initial cost cost;
Described annual operating cost comprises: hot water lithium bromide refrigerator operation expense, electric refrigerating machine operating cost, chilled water pump operating cost, lithium bromide refrigerating cooling water pump operating cost, electricity refrigeration cooling water pump operating cost, lithium bromide refrigerating cooling tower operating cost and electricity refrigeration cooling tower operating cost.
10. distributed busbar protection refrigeration host computer cold distribution system according to claim 8, it is characterized in that, the formula of described calculating Life cycle is:
C t = C + Y ( 1 + i ) n - 1 i ( 1 + i ) n ;
Wherein, C tfor Life cycle cost, unit is ten thousand yuan; I is interest rate; N is life cycle, and unit is year; C initial cost cost, unit is ten thousand yuan, and Y runs annual cost in year, and unit is ten thousand yuan.
CN201510719005.4A 2015-10-28 2015-10-28 Method and system for distributing cold energy of main refrigeration machine of distributed energy station Pending CN105466092A (en)

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Application publication date: 20160406