CN108667121A - A kind of emergency power system capacity determining methods, apparatus and system - Google Patents
A kind of emergency power system capacity determining methods, apparatus and system Download PDFInfo
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- CN108667121A CN108667121A CN201710205783.0A CN201710205783A CN108667121A CN 108667121 A CN108667121 A CN 108667121A CN 201710205783 A CN201710205783 A CN 201710205783A CN 108667121 A CN108667121 A CN 108667121A
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- storage battery
- emergency power
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
Abstract
This application discloses a kind of emergency power system capacity determining methods, apparatus and systems, to solve the problems, such as that emergency power system capacity can not be configured according to the demand of electricity system in the prior art.The method includes determining the attribute for load of meeting an urgent need in the electricity system of power distribution network failure；The emergent load, to need the load of emergency service in the load of the electricity system；Based on the attribute of the emergent load, the type of the energy-storage battery in the emergency power system for providing emergency service is determined；The emergency power system is used to provide emergency service for the electricity system；According to the type and object function of the attribute of the emergent load, the energy-storage battery, the configuration capacity of the emergency power system is determined；The object function is the function for the configuration capacity for calculating the emergency power system.
Description
Technical field
This application involves energy-storage battery technical field more particularly to a kind of emergency power system capacity determining methods, devices
And system.
Background technology
Colliery system includes a variety of electrical equipments, and the sum of general power consumed in these electrical equipments is known as colliery system
Total load.In order to prevent colliery system power distribution network break down influence colliery system normal operation, be typically configured to for
Colliery system provides the emergency power system of emergency service.Wherein, emergency power system includes energy-storage battery and energy storage inverter.
When power distribution network normal operation, energy storage inverter charges to energy-storage battery；When power distribution network breaks down, energy-storage battery is logical
It crosses energy storage inverter and provides emergency service to colliery system.
In order to ensure emergency power system can provide enough electricity to colliery system, need to emergency power system into
Row capacity configuration.And in current allocation plan, it is rule of thumb by way of manually tabling look-up mostly, qualitative analysis is by pre-
The judgement of the abundant practical experience of survey personnel and subjectivity and, be inferred to each parameter pair of analysis of the property and development trend of things
The influence of the capacity configuration scheme of energy-storage battery, can not according to the actual demand amount of colliery system scientifically and accurately comprehensive analysis,
Reasonable disposition can not be carried out to the capacity of emergency power system, to ensure the safe and reliable operation of colliery system.
Invention content
The embodiment of the present application provides a kind of emergency power system capacity determining methods, to solve in the prior art can not root
The problem of emergency power system capacity being configured according to the actual demand of electricity system.
The embodiment of the present application also provides a kind of emergency power system capacity determining device, to solve in the prior art can not
The problem of emergency power system capacity being configured according to the demand of electricity system.
The embodiment of the present application also provides a kind of emergency power system, to solve in the prior art can not be according to electricity system
Demand configuration emergency power system capacity the problem of.
The embodiment of the present application also provides a kind of application system for answering urgent telegram, to solve in the prior art can not be according to electricity consumption
The problem of demand configuration emergency power system capacity of system.
The embodiment of the present application uses following technical proposals：
A kind of emergency power system capacity determining methods, the method includes：
Determine the attribute for load of meeting an urgent need in the electricity system that power distribution network breaks down；The emergent load is the electricity consumption
The load of emergency service is needed in the load of system；
Based on the attribute of the emergent load, the energy storage electricity for providing emergency service in the emergency power system is determined
The type in pond；The emergency power system is used to provide emergency service for the electricity system；
According to the type and object function of the attribute of the emergent load, the energy-storage battery, urgent telegram is answered described in determination
The configuration capacity of source system；The object function is the function for the configuration capacity for calculating the emergency power system.
A kind of emergency power system capacity determining device, described device include：
Load attribute determination module, for determine power distribution network break down electricity system in meet an urgent need load attribute；Institute
Emergent load is stated, to need the load of emergency service in the load of the electricity system；
Battery types determining module is used for the attribute based on the emergent load, determines and used in the emergency power system
In the type for the energy-storage battery for providing emergency service；The emergency power system is used to provide emergent confession for the electricity system
Electricity；
Configuration capacity determining module, for the type and mesh according to the attribute of the emergent load, the energy-storage battery
Scalar functions determine the configuration capacity of the emergency power system；The object function is to calculate matching for the emergency power system
Set the function of capacity.
A kind of emergency power system, the system comprises：
Energy-storage battery group, the energy-storage battery group include at least one energy-storage battery；
Emergency power system capacity determining device described above, the emergency power system capacity and the energy-storage battery
Electrical connection, for being the energy-storage battery group configuration capacity；
Energy storage inverter, the energy storage inverter are electrically connected with the energy-storage battery group, for breaking down in power distribution network
When, energy-storage battery group provides emergency service by the energy storage inverter for load of meeting an urgent need in electricity system.
A kind of application system for answering urgent telegram, the system comprises：
Electricity system；
Emergency power system described above, the emergency power system are electrically connected with the electricity system, for
When power grid breaks down, the emergency power system provides emergency service for load of meeting an urgent need in the electricity system.
Above-mentioned at least one technical solution that the embodiment of the present application uses can reach following advantageous effect：
The application passes through, and determines the attribute for load of meeting an urgent need in the electricity system that power distribution network breaks down, according to described emergent
The attribute of load determines the type of the energy-storage battery for providing emergency service in emergency power system, according to the category of emergent load
Property, the type of energy-storage battery and object function determine the configuration capacity of emergency power system, and then consider and be able to maintain that
Appearance of each load to energy-storage battery in the demand rather than qualitative analysis electricity system of the emergent load of electricity system normal operation
The influence for measuring configuration carries out reasonable disposition to realize to emergency power system, and solution in the prior art can not be according to electricity consumption
The problem of actual demand configuration emergency power system capacity of system.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please do not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is a kind of flow diagram of emergency power system capacity determining methods provided by the embodiments of the present application；
Fig. 2, which is that a kind of emergency power system capacity determining methods provided by the embodiments of the present application are a kind of, using particle cluster algorithm
Optimize the process schematic of the configuration capacity of emergency power system；
Fig. 3 is that a kind of emergency power system capacity determining methods another kind provided by the embodiments of the present application is calculated using population
Method optimizes the process schematic of the configuration capacity of emergency power system；
Fig. 4 is that a kind of emergency power system capacity determining methods provided by the embodiments of the present application are optimized using genetic algorithm
The flow chart of the configuration capacity of emergency power system；
Fig. 5 is a kind of application flow of emergency power system capacity determining methods provided by the embodiments of the present application in practice
Schematic diagram；
Fig. 6 is a kind of structural schematic diagram of emergency power system capacity determining device provided by the embodiments of the present application；
Fig. 7 is a kind of emergency power system structural schematic diagram provided by the embodiments of the present application；
Fig. 8 is a kind of application system structural schematic diagram for answering urgent telegram provided by the embodiments of the present application.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall in the protection scope of this application.
Below in conjunction with attached drawing, the technical solution that each embodiment of the application provides is described in detail.
Embodiment 1
There is provided a kind of emergency power system capacity determining methods in the embodiment of the present application 1, the executive agent of this method can be with
It is terminal device, for example, computer.For the ease of clearly describing this method of the offer of the embodiment of the present application 1, hereafter in method
Executive agent be terminal device for, method provided by the embodiments of the present application is discussed in detail.
It will be understood by those skilled in the art that it is a kind of exemplary illustration that the executive agent of this method, which is terminal device,
It is not the specific restriction to the executive agent of this method.
A kind of implementation process schematic diagram for emergency power system capacity determining methods that embodiment 1 provides was as shown in Figure 1, should
Method includes the following steps：
Step 101, determine power distribution network break down electricity system in meet an urgent need load attribute.
Power distribution network mentioned here can provide electric energy for electricity system.When power distribution network breaks down, electricity system will
The case where can not work normally, and power distribution network caused to break down often there are many kinds of, for example, work as power distribution network own compositions
When failure, it will cause power distribution network that cannot provide electric energy for electricity system, alternatively, when connecting between power distribution network and electricity system
When logical circuit breaks down, electric energy cannot be provided for electricity system by also resulting in power distribution network.
When power distribution network breaks down, electric energy can be provided to electricity system by emergency power system.Due to electricity consumption system
Include often multiple loads in system, it is too fast in order to avoid the energy expenditure of emergency power system and in emergency service, it can be with
The load for being able to maintain that electricity system works normally only is provided to electricity system.For the ease of subsequent descriptions, here by electricity consumption system
In the load of system, it is able to maintain that the load of electricity system normal work is known as emergent load.It is described so in the application to meet an urgent need
Load as needs the load of emergency service in the load of electricity system.Load mentioned here can be in electricity system
Electrical equipment, for example, headlamp, motor, computer, etc..
It is possible to predefine electric energy required when emergent load normal work, specifically, it may be determined that emergent negative
The attribute of lotus, the attribute of emergent load may include the information such as power, charging time and the quantity of emergent load.
The embodiment of the present application has fully taken into account the demand for the emergent load for being able to maintain that electricity system normal operation, and
Non-stationary analyze electricity system in influence of each load to the capacity configuration of energy-storage battery, with realize to emergency power system into
Row reasonable disposition, asking for emergency power system capacity can not be configured according to the actual demand of electricity system in the prior art by solving
Topic.
Step 102, the attribute based on the emergent load determine in the emergency power system for providing emergency service
Energy-storage battery type.
If the attribute of the emergent load includes：The power of the emergent load, the emergent load charging time and
The quantity of the emergent load, it is determined that the type of energy-storage battery is implemented as：
The quantity of emergent load in power and electricity system based on each emergent load determines that energy-storage battery can be
The general power of electricity system power supply；Based on the charging time of each emergent load, determine that energy-storage battery can be that electricity system supplies
The time of electricity；The charging time of general power and energy-storage battery based on energy-storage battery determines the type (energy-storage battery of energy-storage battery
Type may include physics energy-storage battery, Power Flow battery, electrochemical energy storage cell and phase-change accumulation energy battery).Certainly, exist
In the application, determine that the specific method of determination of the type of energy-storage battery is not limited to above-mentioned side based on the attribute of emergent load
Formula, the embodiment of the present application are not especially limited.
Step 103, according to the attribute of the emergent load, (or the energy storage of the type of the energy-storage battery and object function
Battery system capacity algorithm function), determine the configuration capacity of the emergency power system.
In this step, according to the attribute of the emergent load determined in step 101, and according to the energy storage determined in step 102
The type of battery solves object function, to determine that the configuration capacity of emergency power system, the object function can be calculating institute
State the function of the configuration capacity of emergency power system.
In order to obtain the configuration capacity of rational emergency power system, and ensure that emergency power system is pacified in life cycle
Full reliability service, step 103 may comprise steps of：
Step S1, according to the type of the attribute and the energy-storage battery of the emergent load, the object function is solved, is obtained
To solving result.
By above-mentioned steps 102 it is found that according to the power of the emergent load, the charging time of the emergent load and described
The quantity of emergent load, it may be determined that the type of the energy-storage battery.
And according to the type of the energy-storage battery it was determined that the emergency power system being made of the type energy-storage battery
Nuisance parameter, efficiency parameters, energy-storage battery chemical and physical properties parameter etc. can be used to characterize Emergency power source system be
The parameter of each formant characteristic in characteristic of uniting and system, for example, these parameters include but not limited to：The environment school of energy-storage battery
The depth of discharge of positive coefficient, redundancy coefficient, the efficiency of emergency power system and energy-storage battery.
Therefore, according to the type of the attribute and the energy-storage battery of the emergent load, the object function is solved, is obtained
Solving result is specifically as follows：
According to the quantity of the power of the emergent load, the charging time of the emergent load, the emergent load, and
Determine the environment correction factor of energy-storage battery, the depth of discharge of redundancy coefficient, the efficiency of emergency power system and energy-storage battery,
The object function is solved, the solving result is obtained.
In the embodiment of the present application, following formula may be used in the object function：
Wherein, WESSFor the solving result, the i.e. configuration capacity of emergency power system；I is the emergent of the electricity system
The value range of the number of load, i is [1, n]；N is the total quantity of the load of the electricity system；PiFor the electricity system
I-th of emergent load power；tiFor the charging time of described i-th emergent load；KtFor the environmental correction system of energy-storage battery
Number, such as temperature correction facotor；KsFor the safety coefficient of emergency power system redundancy coefficient, such as redundancy；DOD(t)For energy-storage battery
In the depth of discharge of t moment；ηoutFor the efficiency of emergency power system comprising battery body energy conversion efficiency, energy storage unsteady flow
The efficiency etc. of device efficiency, high-low pressure transformer efficiency, high- and low-voltage circuit efficiency of transmission and ancillary equipment.For example, ηout
Calculation formula can be as follows：ηout=ηBattery·ηDC,cable·ηCurrent transformer·ηLV·ηTransformer·ηHV·ηAV·ηAux；ηBatteryFor the storage
The efficiency of energy battery, ηDC,cableFor the DC line efficiency of transmission of the energy-storage battery, ηCurrent transformerFor the efficiency of current transformer, ηLVFor
The low-voltage circuit efficiency of transmission of the current transformer, ηTransformerFor the efficiency of transformer, ηHVIt is transmitted for the high-tension line of the transformer
Efficiency, ηAuxFor the efficiency of ancillary equipment, ηAVFor the cable plant efficiency of transmission of the ancillary equipment.
Therefore, the application uses above-mentioned object function, has fully considered emergency power system design redundancy, energy-storage battery system
Discharge temp coefficient, self-discharge characteristics, energy-storage battery transfer efficiency and the energy storage inverter transfer efficiency and energy-storage battery of system are put
The factors such as electric depth are conducive to enhance the reliability of emergency power system, to ensure energy-storage battery operational safety.
Step S2, according to the bound for objective function, the solving result is corrected, to obtain the emergency power supply
The configuration capacity of system.
Wherein, the bound for objective function is used for constrained objective function, to correct by solving the target letter
The solving result that number obtains.
In order to enable the configuration capacity of the emergency power system arrived, meets the reliability operation of electricity system and/or meets an urgent need
The demand of the low cost of power-supply system and/or the long lifespan of energy-storage battery, in the embodiment of the present application, the constraint item of object function
Part includes：At least one in the cost of the depth of discharge of energy-storage battery, the dead electricity rate of emergency power system and emergency power system
It is a.
It is introduced below for the concrete condition of bound for objective function：
First, the bound for objective function includes the depth of discharge of energy-storage battery.
The depth of discharge of the energy-storage battery refers to during energy-storage battery use, and the capacity that energy-storage battery is released accounts for
The percentage of its rated capacity.
Since there are close relationships for the charge lifetimes of height and energy-storage battery of the depth of discharge of energy-storage battery.Work as energy storage
The depth of discharge of battery is deeper, and energy-storage battery charge lifetimes are shorter, causes the service life of energy-storage battery shorter.Therefore, originally
Application uses the depth of discharge of energy-storage battery as bound for objective function, to correct emergency power supply obtained by calculation
The configuration capacity (the i.e. described solving result) of system, can effectively extend the service life of energy-storage battery.
According to the depth of discharge of the energy-storage battery, the solving result is corrected, it specifically can be according to the two of energy-storage battery
Kind working condition is introduced respectively：
Energy-storage battery in charging process, energy-storage battery t moment depth of discharge with energy-storage battery putting at the t-1 moment
Electric depth, the self-discharge rate of energy-storage battery, the charge efficiency of energy-storage battery, the charge power of energy-storage battery are related.Therefore, energy storage
Battery can be expressed as in the depth of discharge of t moment:
Energy-storage battery in discharge process, energy-storage battery t moment depth of discharge with energy-storage battery putting at the t-1 moment
Electric depth, the self-discharge rate of energy-storage battery, the discharging efficiency of energy-storage battery, the discharge power of energy-storage battery are related.Therefore, energy storage
Battery can be expressed as in the depth of discharge of t moment：
Wherein, WESSFor the object function；σ is the self-discharge rate of energy-storage battery；PdcFor the discharge power of energy-storage battery；
Δ t is the discharge time of the energy-storage battery；ηdcFor the discharging efficiency of the energy-storage battery；PchFor the charging work(of energy-storage battery
Rate；ηchFor the charge efficiency of the energy-storage battery.
In order in the case where meeting energy-storage battery low cost, improve the service life of energy-storage battery, the embodiment of the present application
It can be met using the depth of discharge of energy-storage battery：DODmin≤ DOD≤80% × DODmax；Wherein, DODminFor energy-storage battery institute
The minimum depth of discharge of permission；DODmaxFor the permitted maximum depth of discharge of energy-storage battery.
But under extremely cold environment, usually consider influence of the low temperature to energy-storage battery, the depth of discharge of energy-storage battery
Can suitably it reduce, to expand the configuration capacity of energy-storage battery, to improve the service life of energy-storage battery.Certainly, in reality
In the application of border, for different use environments, the depth of discharge needs of energy-storage battery are adjusted according to actual conditions, the application
Embodiment is not specifically limited.
Second, the bound for objective function includes the dead electricity rate of emergency power system.
The dead electricity rate of the emergency power system refers to that energy-storage battery adds up power-off in electricity system in emergency power system
The electricity provided in time is less than the probability of the emergent load institute electricity demand of electricity system, for weighing emergency power system configuration
(example in the following example in 365*24=8760 hours) is the reliability of electricity system emergency service within a certain period of time after capacity.
In order to meet in a period of power distribution network breaks down, the electrical demand of emergent charge in electricity system, to improve
Energy-storage battery is the reliability of electricity system emergency service, and the embodiment of the present application is using the dead electricity rate of emergency power system as target
The constraints of function.
According to the dead electricity rate of the emergency power system, the solving result is corrected, is specifically as follows：Emergency power system
Dead electricity rate be predetermined value, in the case where meeting the configuration target that energy-storage battery dead electricity rate is predetermined value, according to following emergent
The dead electricity rate formula of power-supply system is modified, and the dead electricity rate formula of emergency power system can be：
Wherein, LSP (t)=Pload·Δt-WESS·(SOC(t-1)-SOCmin)·ηout；SOC(t-1)=1-
DOD(t-1)；ηout·WESS(t)≥Pload(t)·Δt；RLPSPFor the dead electricity rate of the emergency power system；SOC(t-1)For the storage
State-of-charge of the energy battery at the t-1 moment；SOCminFor the energy-storage battery the t-1 moment minimum state-of-charge；
Δ t is the power down time of emergency power system；PloadTo need the load of emergency service in the electricity system
Capacity summation；DOD(t-1)For energy-storage battery the t-1 moment depth of discharge；
Wherein,
Again since energy-storage battery is in charging process, with SOC(t)Increase, energy-storage battery both end voltage UBIncrease therewith
Add；Energy-storage battery is in discharge process, with SOC(t)Reduction, energy-storage battery both end voltage UBIt decreases.It stores up in order to prevent
It can battery both end voltage UBIncrease to cutoff charge voltages UchWhen, energy-storage battery stops charging；And energy-storage battery in order to prevent
Both end voltage UBIt is down to ending discharge voltage UdcWhen, energy-storage battery stops electric discharge.Therefore, energy-storage battery both end voltage UBIt needs full
Foot：Uch≤UB≤Udc.Meanwhile in order to ensure in emergency power system energy storage adverse current device work normally, the energy storage adverse current device
DC voltage UPCS,DCIt needs to meet：UPCS,min≤UPCS,DC≤UPCS,max.And the DC voltage of energy storage adverse current device is also energy storage
The both end voltage U of batteryB.Therefore, according to the dead electricity rate of the emergency power system, it may be determined that the energy-storage battery voltage
Boundary condition includes：
Wherein, UBFor energy-storage battery both end voltage；UchFor the charging voltage of energy-storage battery；UdcFor the electric discharge electricity of energy-storage battery
Pressure；UPCS,DCFor DC voltage；UPCS, minFor DC voltage lower limit；UPCS,maxFor the DC voltage upper limit.
Influence in order to avoid high power charging-discharging to the service life of energy-storage battery, effective protection energy-storage battery improve
The service life of energy-storage battery, the embodiment of the present application pass through according to the power for finally obtaining energy-storage battery and above-mentioned energy storage electricity
The boundary condition of pond both end voltage, it may be determined that the boundary condition of the energy-storage battery electric current, the side of the energy-storage battery electric current
Boundary's condition includes：
Wherein, Ich,maxFor the charging limit electric current of battery；Idc,maxFor the discharge limit electric current of battery.
Third, the bound for objective function include the economic cost of emergency power system.
The economic cost of the emergency power system, including initial outlay cost, operation expense and cost of disposal.Institute
State initial outlay cost mainly and include energy-storage battery, energy storage inverter and ancillary equipment cost of investment, cost of disposal with it is emergent
For the construction scale of power-supply system there are direct relation, maintenance cost includes mainly fixed operation maintenance cost and cost of upkeep.
Wherein, the economic cost of the emergency power system, calculates in the following manner：
Ctotal=Cv+Co+Cd=(kbWESS+kpPESS+kaWESS)+koPESS+kdWESS
Wherein, WESSFor the solving result；PESSFor the power of energy-storage battery；CvFor emergency power system investment at
This, CoFor the operating cost of emergency power system, CdFor the cost of disposal of emergency power system；kbFor the unit energy of energy-storage battery
Measure price (member/KWh), kpFor the unit power price (member/KWh) of energy storage inverter, kaFor the cost of investment coefficient of ancillary equipment
(member/KWh), koFor the operating cost coefficient (member/KWh) of energy-storage battery, kdFor energy-storage battery cost of disposal coefficient (member/
KWh)。
The constraints that the embodiment of the present application passes through the economic cost of emergency power system so that the energy-storage battery of configuration exists
Under the premise of meeting electricity system safe operation, the minimum allocation plan of cost is had chosen, cost is saved.
Further, include the depth of discharge of energy-storage battery, the dead electricity rate of emergency power system in above-mentioned constraints
And in the case of the cost of emergency power system, the reliability operation of electricity system, emergency power system can be met simultaneously
The demand of low cost and the long lifespan of energy-storage battery.
In order to enable revised configuration capacity is best configuration capacity, according to the target described in the embodiment of the present application
The constraints of function is corrected the solving result, be can specifically include：The object function is asked using particle cluster algorithm
Solution result is modified.
Wherein, the particle cluster algorithm is also referred to as particle swarm optimization algorithm or flock of birds foraging algorithm (Particle Swarm
Optimization, PSO), at least there is following both sides advantage using the particle cluster algorithm (PSO) in the application：On the one hand,
Based on the bound for objective function in above-described embodiment, best configuration capacity can be obtained；On the other hand, have higher
Convergence rate.It is illustrated below：
By taking electricity system is colliery system as an example, it is assumed that the basic parameter of the energy-storage battery of emergency power system such as 1 institute of table
Show：
Table 1
| Battery parameter | Numerical value |
| Coal mine important load power | 923 |
| Battery rating/(Ah) | 500 |
| Accumulator rated voltage/V | 2 |
| Battery discharging depth | 0.6 |
| Accumulator charge efficiency | 0.95 |
| Battery discharging efficiency | 0.92 |
| Battery cycle life | 1800 |
| Accumulator price (member) | 800 |
| Inverter and power cable overall efficiency | 0.9 |
Example 1. uses particle cluster algorithm, is optimized to the configuration capacity of emergency power system, is meeting emergency power supply system
Under configuration target conditions of the dead electricity rate of system less than or equal to 0.01%：The Optimal Curve of the configuration capacity of emergency power system is as schemed
Shown in 2, the configuration capacity optimum results of emergency power system are as shown in table 2：
Table 2
| Battery parameter | Numerical value |
| Battery group capacity (KWh) | 2688 |
| Iterations | 76 |
| RLPSP | 0.0095% |
| Average annual least cost (ten thousand yuan) | 1430 |
Example 2. uses particle cluster algorithm, is optimized to the configuration capacity of emergency power system, is meeting emergency power supply system
Under configuration target conditions of the dead electricity rate of system less than or equal to 0.02%：The Optimal Curve of the configuration capacity of emergency power system is as schemed
Shown in 3, the configuration capacity optimum results of emergency power system are as shown in table 3：
Table 3
The embodiment of the present application, during being optimized to the configuration capacity of emergency power system using particle cluster algorithm,
The safe operation of electricity system is paid the utmost attention to, load and the electricity consumption system of electricity system are both met in the dead electricity rate of emergency power system
Under the premise of the service requirement of system, the energy-storage battery capacity configuration minimum in life cycle cost is found.It is being stored up
When the capacity configuration of energy battery, the constraintss such as cost of depth of discharge and emergence power system further according to energy-storage battery are right
The capacity of energy-storage battery carries out reasonable disposition, to ensure that energy-storage battery is safe and reliable in life cycle.Therefore, the application
The configuration capacity for correcting emergency power system using particle cluster algorithm based on bound for objective function, overcomes traditional energy storage
The limitation for only stressing initial outlay in the economical optimization of battery, more meets actual operating mode.
It is certainly, described that the solving result is corrected according to the bound for objective function in the embodiment of the present application,
Can also include specifically：The solving result of the object function is modified using genetic algorithm.
Wherein, the genetic algorithm (Genetic Algorithm) is the natural choosing for simulating Darwinian evolutionism
Select the computation model with the biological evolution process of genetic mechanisms, be it is a kind of by simulate natural evolution process searches optimal solution
Method.
When it is implemented, as shown in figure 4, calculating the flow of the configuration capacity of emergency power system using genetic algorithm such as
Under：
The parameter of step 401, the emergent load attribute of input and energy-storage battery；
Wherein, the attribute of the emergent load includes：The power of emergent load, the charging time of the emergent load and institute
State the quantity of emergent load；The parameter of the energy-storage battery includes：The temperature correction facotor of energy-storage battery, the safety system of redundancy
Number, efficiency and depth of discharge.
Step 402, initialization population；
Specially：Evolutionary generation counter is set, maximum evolutionary generation is set, it is random to generate M individual as initialization
Population；M is positive integer.
The constraints of step 403, each particle of setting；
Wherein, the constraints includes：The depth of discharge of energy-storage battery, the dead electricity rate of emergency power system and answer urgent telegram
The cost of source system.
Step 404, capacity optimization calculate, and handle the variable to transfinite；
Step 405 judges that genetic algorithm reaches maximum algebraically；
Step 406, if it is not, generating next-generation population, execute step 401；
Step 407 exports results operation if so, executing.
It should be noted that the executive agent of each step of 1 providing method of embodiment may each be same equipment, or
Person, this method is also by distinct device as executive agent.For example, the executive agent of step 101 and step 102 can be equipment 1,
The executive agent of step 103 can be equipment 2；For another example, the executive agent of step 101 can be equipment 1, step 102 and step
Rapid 103 executive agent can be equipment 2；Etc..
Embodiment 2
The present embodiment 2 is based on a kind of implementation process of emergency power system capacity determining methods, as shown in figure 5, with electricity consumption
System is that colliery system is scene, and described method includes following steps：
Step 501, determine power distribution network break down colliery system in meet an urgent need load attribute.
Wherein, the attribute of the emergent load includes：The power of emergent load, the charging time of the emergent load and institute
State the quantity of emergent load.
Step 502, the attribute based on the emergent load determine in the emergency power system for providing emergency service
Energy-storage battery type.
Wherein, according to the type of the energy-storage battery it was determined that the temperature of energy-storage battery corresponding with the type
Correction coefficient, the safety coefficient of redundancy, efficiency and depth of discharge.
Step 503, the type according to the attribute and the energy-storage battery of the emergent load, solve the object function,
Obtain solving result.
Specifically, according to the power of the emergent load, the number of the charging time of the emergent load, the emergent load
Amount, and determine the temperature correction facotor of energy-storage battery, the safety coefficient of redundancy, efficiency and depth of discharge, solve the mesh
Scalar functions obtain the solving result.
Step 504, according to the bound for objective function, the solving result is corrected, to obtain described answering urgent telegram
The configuration capacity of source system.
Wherein, the bound for objective function is used for constrained objective function, to correct by solving the target letter
The solving result that number obtains.
In order to enable the configuration capacity of the emergency power system arrived, meets the reliability operation of electricity system and/or meets an urgent need
The demand of the low cost of power-supply system and/or the long lifespan of energy-storage battery, in the embodiment of the present application, the constraint item of object function
Part includes：At least one in the cost of the depth of discharge of energy-storage battery, the dead electricity rate of emergency power system and emergency power system
It is a.
The introduction of corresponding portion in embodiment 1 is used for the concrete condition of constraints, the embodiment of the present application is not done superfluous
It states.
The application passes through, and determines the attribute for load of meeting an urgent need in the electricity system that power distribution network breaks down, according to described emergent
The attribute of load determines the type of the energy-storage battery for providing emergency service in emergency power system, according to the category of emergent load
Property, the type of energy-storage battery and object function determine the configuration capacity of emergency power system, and then consider and be able to maintain that
Appearance of each load to energy-storage battery in the demand rather than qualitative analysis electricity system of the emergent load of electricity system normal operation
The influence for measuring configuration carries out reasonable disposition to realize to emergency power system, and solution in the prior art can not be according to electricity consumption
The problem of actual demand configuration emergency power system capacity of system.
Embodiment 3
Based on inventive concept same as a kind of emergency power system capacity determining methods that the embodiment of the present application 1 provides,
The embodiment of the present application also provides a kind of emergency power system capacity determining devices, as shown in Figure 6.
Fig. 6 is a kind of emergency power system capacity determining device structural schematic diagram provided by the embodiments of the present application, the dress
Set including：
Load attribute determination module 61, for determine power distribution network break down electricity system in meet an urgent need load attribute；
The emergent load, to need the load of emergency service in the load of the electricity system；
Battery types determining module 62 is used for the attribute based on the emergent load, determines in the emergency power system
Type for the energy-storage battery for providing emergency service；The emergency power system is used to provide emergent confession for the electricity system
Electricity；
Configuration capacity determining module 63, for according to the attribute of the emergent load, the type of the energy-storage battery and
Object function determines the configuration capacity of the emergency power system；The object function is to calculate the emergency power system
The function of configuration capacity.
The configuration capacity determining module 63 includes：
Solving result obtaining unit is used for the type of the attribute and the energy-storage battery according to the emergent load, solves
The object function, obtains solving result；
Amending unit, for according to the bound for objective function, correcting the solving result, to obtain described answer
The configuration capacity of anxious power-supply system.
The attribute of the emergent load, including the power of the emergent load, the charging time of the emergent load and institute
State the quantity of emergent load；
The solving result obtaining unit includes：
Battery parameter determination subelement, for the type according to the energy-storage battery, determination is corresponding with the type
The environment correction factor and depth of discharge of energy-storage battery and the redundancy coefficient and efficiency of the emergency power system；
Solving result obtains subelement, for according to the charging time of the power of the emergent load, the emergent load,
The quantity of the emergent load, and the environment correction factor, redundancy coefficient, efficiency and the depth of discharge determined solve
The object function obtains the solving result.
The object function is：
Wherein,
WESSFor the solving result；
I is the number of the emergent load of the electricity system, and the value range of i is [1, n]；N is the electricity system
The total quantity of load；
PiFor the power of i-th of emergent load of the electricity system；
tiFor the charging time of described i-th emergent load；
KtFor the environment correction factor of energy-storage battery；
KsFor emergency power system redundancy coefficient；
DOD(t)For energy-storage battery t moment depth of discharge；
ηoutFor the efficiency of emergency power system, calculation formula is as follows：ηout=ηBattery·ηDC,cable·ηCurrent transformer·ηLV·
ηTransformer·ηHV·ηAV·ηAux；
ηBatteryFor the efficiency of the energy-storage battery, ηDC,cableFor the efficiency of the AC line of the energy-storage battery, ηCurrent transformerFor unsteady flow
The efficiency of device, ηLVFor the low-voltage circuit efficiency of transmission of the current transformer, ηTransformerFor the efficiency of transformer, ηHVFor the transformer
High-tension line efficiency of transmission, ηAuxFor the efficiency of ancillary equipment, ηAVFor the cable plant efficiency of transmission of the ancillary equipment.
The bound for objective function includes the depth of discharge of energy-storage battery.
The energy-storage battery calculates according to the following equation in the depth of discharge of t moment：
Wherein, WESSFor the object function；
σ is the self-discharge rate of energy-storage battery；PdcFor the discharge power of energy-storage battery；Δ t is the electric discharge of the energy-storage battery
Time；ηdcFor the discharging efficiency of the energy-storage battery；PchFor the charge power of energy-storage battery；ηchFor filling for the energy-storage battery
Electrical efficiency.
The depth of discharge of the energy-storage battery meets：
DODmin≤ DOD≤80% × DODmax
Wherein,
DODminFor the permitted minimum depth of discharge of energy-storage battery；
DODmaxFor the permitted maximum depth of discharge of energy-storage battery.
The bound for objective function includes the dead electricity rate of emergency power system.
Wherein, the dead electricity rate of the emergency power system, is calculated according to the following equation：
Wherein, LPS (t)=Pload·Δt-WESS·(SOC(t-1)-SOCmin)·ηout；SOC(t-1)=1-
DOD(t-1)；ηout·WESS(t)≥Pload(t)·Δt；
WESSFor the object function；
RLPSPFor the dead electricity rate of the emergency power system；
SOC(t-1)For the energy-storage battery the t-1 moment state-of-charge；
SOCminFor the energy-storage battery the t-1 moment minimum state-of-charge；
Δ t is the power down time of emergency power system；
PloadFor needed in the electricity system emergency service load capacity summation；
DOD(t-1)For energy-storage battery the t-1 moment depth of discharge.
The amending unit includes：
Constraints determination subelement determines the energy-storage battery for the dead electricity rate according to the emergency power system
The boundary condition of the boundary condition of voltage and the energy-storage battery electric current.
The boundary condition of the energy-storage battery voltage includes：
Wherein, UBFor the terminal voltage of energy-storage battery；UchFor the charging voltage of energy-storage battery；UdcFor the electric discharge electricity of energy-storage battery
Pressure；UPCS,DCFor DC voltage；UPCS, minFor DC voltage lower limit；UPCS,maxFor the DC voltage upper limit.
The boundary condition of the energy-storage battery electric current includes：
Wherein, Ich,maxFor the charging limit electric current of battery；Idc,maxFor the discharge limit electric current of battery.
Further, the bound for objective function includes the economic cost of emergency power system.
Wherein, the economic cost of the emergency power system, calculates in the following manner：
Ctotal=Cv+Co+Cd=(kbWESS+kpPESS+kaWESS)+koPESS+kdWESS
Wherein, WESSFor the solving result；PESSFor the power of energy-storage battery；
CvFor the cost of investment of emergency power system, CoFor the operating cost of emergency power system, CdFor emergency power system
Cost of disposal；kbFor the unit energy price of energy-storage battery, kpFor the unit power price of energy storage inverter, kaIt is set for auxiliary
Standby cost of investment coefficient, koFor the operating cost coefficient of energy-storage battery, kdFor the cost of disposal coefficient of energy-storage battery.
It is described to solve the object function, it specifically includes：The object function is solved using particle cluster algorithm.
The application passes through, and determines the attribute for load of meeting an urgent need in the electricity system that power distribution network breaks down, according to described emergent
The attribute of load determines the type of the energy-storage battery for providing emergency service in emergency power system, according to the category of emergent load
Property, the type of energy-storage battery and object function determine the configuration capacity of emergency power system, and then consider and be able to maintain that
Appearance of each load to energy-storage battery in the demand rather than qualitative analysis electricity system of the emergent load of electricity system normal operation
The influence for measuring configuration carries out reasonable disposition to realize to emergency power system, and solution in the prior art can not be according to electricity consumption
The problem of actual demand configuration emergency power system capacity of system.
Embodiment 4
It is provided based on a kind of emergency power system capacity determining methods and embodiment 2 provided with the embodiment of the present application 1
A kind of same inventive concept of emergency power system capacity determining device, the embodiment of the present application also provides a kind of emergency power supply systems
System, as shown in Figure 7.
Fig. 7 is a kind of emergency power system structural schematic diagram provided by the embodiments of the present application, the system comprises：
Energy-storage battery group 71, the energy-storage battery group 71 include at least one energy-storage battery；
Emergency power system capacity determining device 72 described in above-described embodiment, the emergency power system capacity determine
Device 72 is electrically connected with the energy-storage battery group 71, for being 71 configuration capacity of energy-storage battery group；
Energy storage inverter 73, the energy storage inverter 73 are electrically connected with the energy-storage battery group 71, for going out in power distribution network
When existing failure, energy-storage battery group 71 provides emergency service by the energy storage inverter 73 for load of meeting an urgent need in electricity system.
Wherein, the specific implementation of the emergency power system capacity determining device 72 and the advantageous effect reached please refer to reality
It applies described in example 1 to 3, the embodiment of the present application repeats no more.
Embodiment 5
Based on a kind of same inventive concept of emergency power system for being provided with the embodiment of the present application 4, the embodiment of the present application
A kind of application system for answering urgent telegram is additionally provided, as shown in Figure 8.
Fig. 8 is a kind of application system structural schematic diagram for answering urgent telegram provided by the embodiments of the present application, the system comprises：With
Emergency power system 81 described in electric system 82 and above-mentioned implementation, the emergency power system 81 and 82 electricity of the electricity system
Connection, for when power distribution network breaks down, the emergency power system 81 to provide for load of meeting an urgent need in the electricity system 82
Emergency service.Wherein, the specific implementation of the emergency power system 81 and the advantageous effect reached please refer to 1 to 3 institute of embodiment
It states, the embodiment of the present application repeats no more.It is in practical applications, described that answer the application system of urgent telegram can be colliery system.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include computer-readable medium in volatile memory, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology realizes information storage.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic tape cassette, tape magnetic disk storage or other magnetic storage apparatus
Or any other non-transmission medium, it can be used for storage and can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Including so that process, method, commodity or equipment including a series of elements include not only those elements, but also wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that wanted including described
There is also other identical elements in the process of element, method, commodity or equipment.
Above is only an example of the present application, it is not intended to limit this application.For those skilled in the art
For, the application can have various modifications and variations.It is all within spirit herein and principle made by any modification, equivalent
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (27)
1. a kind of emergency power system capacity determining methods, which is characterized in that including：
Determine the attribute for load of meeting an urgent need in the electricity system that power distribution network breaks down；The emergent load is the electricity system
Load in need the load of emergency service；
Based on the attribute of the emergent load, the class of the energy-storage battery in emergency power system for providing emergency service is determined
Type；The emergency power system is used to provide emergency service for the electricity system；
According to the type and object function of the attribute of the emergent load, the energy-storage battery, the emergency power supply system is determined
The configuration capacity of system；The object function is the function for the configuration capacity for calculating the emergency power system.
2. according to the method described in claim 1, it is characterized in that, according to the attribute of the emergent load, the energy-storage battery
Type and object function, determine the configuration capacity of emergency power system, specifically include：
According to the type of the attribute and the energy-storage battery of the emergent load, the object function is solved, solving result is obtained；
According to the bound for objective function, the solving result is corrected, to obtain the configuration of the emergency power system
Capacity.
3. according to the method described in claim 2, it is characterized in that, the attribute of the emergent load, including the emergent load
Power, the emergent load charging time and the emergent load quantity；
According to the type of the attribute and the energy-storage battery of the emergent load, the object function is solved, solving result is obtained,
It specifically includes：
According to the type of the energy-storage battery, environment correction factor and the electric discharge of energy-storage battery corresponding with the type are determined
The redundancy coefficient and efficiency of depth and the emergency power system；
According to the quantity of the power of the emergent load, the charging time of the emergent load, the emergent load, and determine
The environment correction factor, redundancy coefficient, efficiency and the depth of discharge gone out, solves the object function, obtains the solution knot
Fruit.
4. according to the method described in claim 3, it is characterized in that, the object function is：
Wherein,
WESSFor the solving result；
I is the number of the emergent load of the electricity system, and the value range of i is [1, n]；N is the load of the electricity system
Total quantity；
PiFor the power of i-th of emergent load of the electricity system；
tiFor the charging time of described i-th emergent load；
KtFor the environment correction factor of energy-storage battery；
KsFor emergency power system redundancy coefficient；
DOD(t)For energy-storage battery t moment depth of discharge；
ηoutFor the efficiency of emergency power system, calculation formula is as follows：ηout=ηBattery·ηDC,cable·ηCurrent transformer·ηLV·ηTransformer·
ηHV·ηAV·ηAux；
ηBatteryFor the efficiency of the energy-storage battery, ηDC,cableFor the efficiency of the AC line of the energy-storage battery, ηCurrent transformerFor current transformer
Efficiency, ηLVFor the low-voltage circuit efficiency of transmission of the current transformer, ηTransformerFor the efficiency of transformer, ηHVFor the height of the transformer
Crimping road efficiency of transmission, ηAuxFor the efficiency of ancillary equipment, ηAVFor the cable plant efficiency of transmission of the ancillary equipment.
5. according to the method described in claim 4, it is characterized in that, the bound for objective function includes energy-storage battery
At least one of the economic cost of depth of discharge, the dead electricity rate of emergency power system and emergency power system.
6. according to the method described in claim 5, it is characterized in that, the energy-storage battery t moment depth of discharge, under
State formula calculating：
Wherein, WESSFor the object function；
σ is the self-discharge rate of energy-storage battery；PdcFor the discharge power of energy-storage battery；Δ t is the discharge time of the energy-storage battery；
ηdcFor the discharging efficiency of the energy-storage battery；PchFor the charge power of energy-storage battery；ηchIt is imitated for the charging of the energy-storage battery
Rate.
7. according to the method described in claim 6, it is characterized in that, the depth of discharge of the energy-storage battery meets：
DODmin≤ DOD≤80% × DODmax
Wherein,
DODminFor the permitted minimum depth of discharge of energy-storage battery；
DODmaxFor the permitted maximum depth of discharge of energy-storage battery.
8. according to the method described in claim 5, it is characterized in that, the dead electricity rate of the emergency power system, according to following public affairs
Formula is calculated：
Wherein, LSP (t)=Pload·Δt-WESS·(SOC(t-1)-SOCmin)·ηout；SOC(t-1)=1-
DOD(t-1)；ηout·WESS(t)≥Pload(t)·Δt；
WESSFor the object function；
RLPSPFor the dead electricity rate of the emergency power system；
SOC(t-1)For the energy-storage battery the t-1 moment state-of-charge；
SOCminFor the energy-storage battery the t-1 moment minimum state-of-charge；
Δ t is the power down time of emergency power system；
PloadFor needed in the electricity system emergency service load capacity summation；
DOD(t-1)For energy-storage battery the t-1 moment depth of discharge.
9. according to the method described in claim 8, it is characterized in that, according to the dead electricity rate of the emergency power system, institute is corrected
Solving result is stated, to obtain the configuration capacity of the emergency power system, is specifically included：
According to the dead electricity rate of the emergency power system, the boundary condition of the energy-storage battery voltage and the energy-storage battery are determined
The boundary condition of electric current.
10. according to the method described in claim 9, it is characterized in that, the boundary condition of the energy-storage battery voltage includes：
Wherein, UBFor the terminal voltage of energy-storage battery；UchFor the charging voltage of energy-storage battery；UdcFor the discharge voltage of energy-storage battery；
UPCS,DCFor DC voltage；UPCS, minFor DC voltage lower limit；UPCS,maxFor the DC voltage upper limit.
11. according to the method described in claim 10, it is characterized in that, the boundary condition of the energy-storage battery electric current includes：
Wherein, Ich,maxFor the charging limit electric current of battery；Idc,maxFor the discharge limit electric current of battery.
12. according to the method described in claim 5, it is characterized in that, the economic cost of the emergency power system, according to following
Mode calculates：
Ctotal=Cv+Co+Cd=(kb WESS+kpPESS+kaWESS)+koPESS+kdWESS
Wherein, WESSFor the solving result；PESSFor the power of energy-storage battery；
CvFor the cost of investment of emergency power system, CoFor the operating cost of emergency power system, CdFor the place of emergency power system
It is set to this；kbFor the unit energy price of energy-storage battery, kpFor the unit power price of energy storage inverter, kaFor ancillary equipment
Cost of investment coefficient, koFor the operating cost coefficient of energy-storage battery, kdFor the cost of disposal coefficient of energy-storage battery.
13. a kind of emergency power system capacity determining device, which is characterized in that including：
Load attribute determination module, for determine power distribution network break down electricity system in meet an urgent need load attribute；It is described to answer
Anxious load, to need the load of emergency service in the load of the electricity system；
Battery types determining module is used for the attribute based on the emergent load, determines in emergency power system and is answered for providing
The type for the energy-storage battery suddenly powered；The emergency power system is used to provide emergency service for the electricity system；
Configuration capacity determining module, for according to the attribute of the emergent load, the type of the energy-storage battery and target letter
Number, determines the configuration capacity of the emergency power system；The object function is the configuration appearance for calculating the emergency power system
The function of amount.
14. device according to claim 13, which is characterized in that the configuration capacity determining module includes：
Solving result obtaining unit, for the type according to the attribute and the energy-storage battery of the emergent load, described in solution
Object function obtains solving result；
Amending unit corrects the solving result for according to the bound for objective function, to obtain described answering urgent telegram
The configuration capacity of source system.
15. device according to claim 14, which is characterized in that the attribute of the emergent load, including it is described emergent negative
The power of lotus, the emergent load charging time and the emergent load quantity；
The solving result obtaining unit includes：
Battery parameter determination subelement determines energy storage corresponding with the type for the type according to the energy-storage battery
The environment correction factor and depth of discharge of battery and the redundancy coefficient and efficiency of the emergency power system；
Solving result obtains subelement, for according to the charging time of the power of the emergent load, the emergent load, described
The quantity of emergent load, and the environment correction factor, redundancy coefficient, efficiency and the depth of discharge determined, described in solution
Object function obtains the solving result.
16. device according to claim 15, which is characterized in that the object function is：
Wherein,
WESSFor the solving result；
I is the number of the emergent load of the electricity system, and the value range of i is [1, n]；N is the load of the electricity system
Total quantity；
PiFor the power of i-th of emergent load of the electricity system；
tiFor the charging time of described i-th emergent load；
KtFor the environment correction factor of energy-storage battery；
KsFor emergency power system redundancy coefficient；
DOD(t)For energy-storage battery t moment depth of discharge；
ηoutFor the efficiency of emergency power system, calculation formula is as follows：ηout=ηBattery·ηDC,cable·ηCurrent transformer·ηLV·ηTransformer·
ηHV·ηAV·ηAux；
ηBatteryFor the efficiency of the energy-storage battery, ηDC,cableFor the efficiency of the AC line of the energy-storage battery, ηCurrent transformerFor current transformer
Efficiency, ηLVFor the low-voltage circuit efficiency of transmission of the current transformer, ηTransformerFor the efficiency of transformer, ηHVFor the height of the transformer
Crimping road efficiency of transmission, ηAuxFor the efficiency of ancillary equipment, ηAVFor the cable plant efficiency of transmission of the ancillary equipment.
17. device according to claim 16, which is characterized in that the bound for objective function includes energy-storage battery
Depth of discharge, the dead electricity rate of emergency power system and at least one of the economic cost of emergency power system.
18. device according to claim 17, which is characterized in that the energy-storage battery t moment depth of discharge, according to
Following formula calculate：
Wherein, WESSFor the object function；
σ is the self-discharge rate of energy-storage battery；PdcFor the discharge power of energy-storage battery；Δ t is the discharge time of the energy-storage battery；
ηdcFor the discharging efficiency of the energy-storage battery；PchFor the charge power of energy-storage battery；ηchIt is imitated for the charging of the energy-storage battery
Rate.
19. device according to claim 18, which is characterized in that the depth of discharge of the energy-storage battery meets：
DODmin≤ DOD≤80% × DODmax
Wherein,
DODminFor the permitted minimum depth of discharge of energy-storage battery；
DODmaxFor the permitted maximum depth of discharge of energy-storage battery.
20. device according to claim 17, which is characterized in that the dead electricity rate of the emergency power system, according to following
Formula is calculated：
Wherein, LSP (t)=Pload·Δt-WESS·(SOC(t-1)-SOCmin)·ηout；SOC(t-1)=1-
DOD(t-1)；ηout·WESS(t)≥Pload(t)·Δt；
WESSFor the object function；
RLPSPFor the dead electricity rate of the emergency power system；
SOC(t-1)For the energy-storage battery the t-1 moment state-of-charge；
SOCminFor the energy-storage battery the t-1 moment minimum state-of-charge；
Δ t is the power down time of emergency power system；
PloadFor needed in the electricity system emergency service load capacity summation；
DOD(t-1)For energy-storage battery the t-1 moment depth of discharge.
21. device according to claim 20, which is characterized in that the amending unit includes：
Constraints determination subelement determines the energy-storage battery voltage for the dead electricity rate according to the emergency power system
Boundary condition and the energy-storage battery electric current boundary condition.
22. device according to claim 21, which is characterized in that the boundary condition of the energy-storage battery voltage includes：
Wherein, UBFor the terminal voltage of energy-storage battery；UchFor the charging voltage of energy-storage battery；UdcFor the discharge voltage of energy-storage battery；
UPCS,DCFor DC voltage；UPCS, minFor DC voltage lower limit；UPCS,maxFor the DC voltage upper limit.
23. device according to claim 22, which is characterized in that the boundary condition of the energy-storage battery electric current includes：
Wherein, Ich,maxFor the charging limit electric current of battery；Idc,maxFor the discharge limit electric current of battery.
24. device according to claim 17, which is characterized in that the economic cost of the emergency power system, under
The mode of stating calculates：
Ctotal=Cv+Co+Cd=(kb WESS+kpPESS+kaWESS)+koPESS+kdWESS
Wherein, WESSFor the solving result；PESSFor the power of energy-storage battery；
CvFor the cost of investment of emergency power system, CoFor the operating cost of emergency power system, CdFor the place of emergency power system
It is set to this；kbFor the unit energy price of energy-storage battery, kpFor the unit power price of energy storage inverter, kaFor ancillary equipment
Cost of investment coefficient, koFor the operating cost coefficient of energy-storage battery, kdFor the cost of disposal coefficient of energy-storage battery.
25. a kind of emergency power system, which is characterized in that the system comprises：
Energy-storage battery group, the energy-storage battery group include at least one energy-storage battery；
Emergency power system capacity determining device described in any one of the claims 13~24, the emergency power system
Capacity is electrically connected with the energy-storage battery group, for being the energy-storage battery group configuration capacity；
Energy storage inverter, the energy storage inverter are electrically connected with the energy-storage battery group, for when power distribution network breaks down, storing up
Energy battery pack provides emergency service by the energy storage inverter for load of meeting an urgent need in electricity system.
26. a kind of application system for answering urgent telegram, which is characterized in that the system comprises：
Electricity system；
Emergency power system described in the claims 25, the emergency power system are electrically connected with the electricity system, are used
In when power distribution network breaks down, the emergency power system provides emergency service for load of meeting an urgent need in the electricity system.
27. system according to claim 26, which is characterized in that described to answer the application system of urgent telegram for colliery system.
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| Publication number | Priority date | Publication date | Assignee | Title |
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