CN109375526A - A kind of numerical model analysis simulation test platform - Google Patents
A kind of numerical model analysis simulation test platform Download PDFInfo
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- CN109375526A CN109375526A CN201811329852.XA CN201811329852A CN109375526A CN 109375526 A CN109375526 A CN 109375526A CN 201811329852 A CN201811329852 A CN 201811329852A CN 109375526 A CN109375526 A CN 109375526A
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
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Abstract
A kind of numerical model analysis simulation test platform, including Digital Subsystem, physics subsystem and digital-to-analogue hybrid simulation interface.The Digital Subsystem is based on eMEGAsim real-time simulator and builds.Physics subsystem is practical die device.Numerical model analysis emulation interface is the linear power amplifier interface and sensing measurement device interface of four quadrant running.The input terminal of the power amplifier interface of the real-time simulator connection digital-to-analogue hybrid simulation interface of Digital Subsystem, the input terminal of the practical die device of the output end and physics subsystem of power amplifier interface are connected；The sensing measurement device interface of numerical model analysis emulation interface and the real-time simulator of Digital Subsystem connect；The numerical model analysis simulation test platform realizes the matching of Digital Subsystem and physics subsystem by numerical model analysis emulation interface algorithm, carries out the emulation testing of practical die device.
Description
Technical field
The present invention relates to a kind of numerical model analysis simulation test platforms.
Background technique
With becoming increasingly conspicuous for global energy and environmental problem, the renewable energy such as photovoltaic, wind-powered electricity generation are developed rapidly,
Due to the randomness and fluctuation of renewable energy power output, large effect is brought to the stable operation of power grid.For this purpose, energy storage
The grid-connected impact to power grid of renewable energy can be effectively relieved in the use of system, so that the large-scale development for energy storage provides
Excellent opportunity.
Flourishing for renewable energy and energy storage, promotes the generation, upgrading and transformation of relevant device.Photovoltaic inversion
The marketization of large quantities of power electronic equipments such as device, blower rectifier, energy accumulation current converter, has also pushed renewable energy and energy storage
Demonstration application.But currently, the test of these equipment relies primarily on fixed power grid or grid simulator is powered, to true
The operating condition of power grid characterizes inaccurate.
Chinese patent 201310283532.6 discloses a kind of power level digital-analog hybrid simulation system, which includes: hard
Part circuit: it is inputted for realizing digital side and physical side power conversion and the acquisition of physical side feedback signal；Mathematical model: it is used for
Realize historical current calculating, compensation of delay, the output of digital side electric current, the input of physical side voltage acquisition and decoupling circuit model；
Power Exchange is carried out between hardware circuit and mathematical model, digital simulator and physical side are waited for that simulator carries out by hardware circuit
Connection, mathematical model is completed to calculate and exports calculating parameter to hardware circuit, while electric parameter is fed back to number by hardware circuit
Word model realizes the power stage numerical model analysis emulation of digital side and physical side as input.But the emulation system that the invention is introduced
System is primarily adapted for use in extensive hybrid AC/DC power transmission systems.
Summary of the invention
In order to overcome the shortcomings of the prior art, the present invention proposes a kind of numerical model analysis simulation test platform.Test platform master
It to include Digital Subsystem, physics subsystem and digital-to-analogue hybrid simulation interface.The present invention mixes true interface algorithm by number and realizes
The matching of Digital Subsystem and physics subsystem carries out practical die device, such as energy accumulation current converter, inverse control all-in-one machine, light storage one
The emulation testing of the equipment such as body machine.
The invention is realized by the following technical scheme:
The Digital Subsystem is based on eMEGAsim real-time simulator and builds, and physics subsystem is practical die device,
Numerical model analysis emulation interface includes the linear power amplifier interface and high-precision sensing measuring appliance interface of four quadrant running.Number
The input terminal of the power amplifier interface of the real-time simulator connection digital-to-analogue hybrid simulation interface of subsystem, power amplifier interface
Output end be connected with the input terminal of the practical die device of physics subsystem；The sensing measurement device of numerical model analysis emulation interface connects
Mouth is connect with the real-time simulator of Digital Subsystem.
The present invention, come systems such as simulating grids, and carries out numerical calculation using Digital Simulation in real-time simulator, in real time
Outputting and inputting for emulator is digital signal, belongs to weak electricity system.The present invention is used and is studied by Quebec, CAN water power
Institute exploitation real-time simulator eMEGAsim construct Digital Subsystem, real-time simulator include host computer, slave computer, interchanger,
Industrial cable and 1394 cables: host computer is WINDOWS operating system, the softwares such as insertion MATLAB；Slave computer is QNX operation system
System, network interface card are technical grade network interface card；It is attached in the form of IEEE 1394 (firewire) is with " daisy chain " between PC, bandwidth
Reach 400Mb/s or more；It is connected between upper and lower computer using Industrial Ethernet.Furthermore using distributed variable-frequencypump thinking,
Based on Intel CoreTM 2Quad multi-core processor and FPGA technology, the multi tate real-time simulation of large-scale power grid is realized, it can be
The small step-length real time execution of Microsecond grade, to accurately simulate the various electromagnetic transients in current electric system.Therefore,
EMEGAsim emulator is suitable for the real-time simulation of large-scale complex electric power networks, for containing the new energy of a large amount of power electronic devices
Source and new equipment have stronger applicability, such as Wind turbines, photovoltaic power generation, energy storage, FACTS device and alternating current-direct current power grid.
Physics subsystem of the invention is simulated using practical die device, and cocommutative in numerical model analysis emulation interface is true
Real electrical power, belongs to strong power system.New equipment to be tested or existing model is needed to be difficult to accurately to express using mathematical model
Equipment can be used as physics subsystem, for example, a power equipment such as energy accumulation current converter, inverse control all-in-one machine, light storage all-in-one machine, with
And the secondary powers equipment such as intelligent monitoring protection device, anti-islanding protection device.
Numerical model analysis emulation interface of the present invention includes power amplifier interface and sensing measurement device interface, for realizing number
Conversion between subsystem and physics subsystem different types of data.There are two channels for the numerical model analysis emulation interface tool.
One of channel is the amplification channel from Digital Subsystem to physics subsystem, and the digital quantity that Digital Simulation is obtained is changed into
The acceptable analog quantity of physics subsystem, and it is amplified to corresponding power, it is realized by power amplifier interface.The present invention adopts
It uses the 21kVA linear power amplifier of French Puissance company exploitation as the interface for realizing the function, can be transported with four-quadrant
Row has the characteristics that the response time is fast, power capacity is higher.The power amplifier interface includes signal input port, letter
Number amplifier section, power can two-way flow aviation plug port and artifical resistance part.Signal input port and digital subsystem
It unites real-time simulator connection, receives the voltage signal from Digital Subsystem real-time simulator, signal input port is also and signal
Amplifier section connection, signal amplifying part point are connected with aviation plug, and signal input port is by signal amplifying part point from number
The voltage signal of word subsystem real-time simulator is converted into real work voltage, and exports virtual voltage by aviation plug.Boat
Blind plug is connected with artifical resistance part, since aviation plug port can carry out to and fro flow of power, when practical die device
Energy storage device electric discharge when, the operation power of practical die device gives artifical resistance part to carry out by aviation plug port transmission
Consumption.Another channel of the numerical model analysis emulation interface is that the sampling feedback from physics subsystem to Digital Subsystem is logical
Road is converted into and the matched digital quantity of Digital Simulation, feedback by the analog quantity parameter of physics subsystem actual motion by sampling
To Digital Subsystem.The sensing measurement device interface is by being mounted on practical die device and power amplifier electrical cable
On current sensor, acquire the running current of practical die device, be translated into voltage signal, transmitted by board information
Line uploads to the real-time simulator of Digital Subsystem, realizes the sampling feedback from physics subsystem to Digital Subsystem.
The workflow of simulation test platform of the present invention are as follows:
The real-time simulator simulating grid system of the Digital Subsystem, the practical die device of physics subsystem is connect
Some node entered in the network system is emulated, and converts voltage signal for a node voltage in network system,
It is transferred to the power amplifier interface of numerical model analysis emulation interface by BNC coaxial connecting line, power amplifier interface is by the letter
Number it is enlarged into real work voltage, and the practical die device by the aviation plug port of three-phase and four-line for physics subsystem connects
Enter；Later, the practical running electric current of die device is acquired by the current sensor of sensing measurement device interface, and converted
For voltage signal, the real-time simulator of Digital Subsystem is uploaded to by board transmission line of information, and then analyzes the practical dynamic model
Influence of the access of device to network system.
Numerical model analysis emulation interface algorithm of the invention is as follows:
It, must be according to the practical die device of physics subsystem for the authenticity and accuracy for guaranteeing numerical model analysis emulation experiment
Numerical model analysis simulated digital interface algorithm is arranged in the factors such as capacity and network voltage grade, i.e., simulation ratio, the present invention mainly calculate
Voltage, energy storage charging and discharging currents and feed-in current analog ratio.Voltage analog is than the simulation electricity to need to export in Digital Subsystem
The coefficient of the node voltage signal of net, i.e. node voltage are multiplied by voltage analog than being Digital Subsystem to power amplifier transfer
Voltage signal values.Digital Subsystem energy storage charging/discharging current instruction according to acquired in simulation algorithm is multiplied by energy storage charging and discharging currents
Simulation is than the charging/discharging current instruction for the energy storage device in practical die device.Pass through sensing measurement device interface feed-in number
Electric current of the current signal of system multiplied by feed-in current analog than the simulating grid system for feed-in Digital Subsystem.
(1) voltage analog ratio
The practical die device of physics subsystem is connect with Digital Subsystem by power amplifier interface, power amplifier
The voltage change ratio of interface is fixed value 56.6.
The bus phase voltage of practical die device access electric system is Uin, a reference value Ur；Power amplifier interface is real
It is U that border, which runs phase voltage,a, a reference value 220V, based on the voltage per unit value principle of equal effects:
Ur*ku* (1) 56.6=220
Voltage analog ratio kuAre as follows:
ku=220/ (Ur*56.6) (2)
(2) energy storage charging and discharging currents simulate ratio
Energy storage device in the practical die device reference voltage in charge and discharge is different, when energy storage charging, with DC side
Voltage UDCOn the basis of；When energy storage electric discharge, to exchange side voltage UaOn the basis of；So that digital display circuit is to physics subsystem
Practical die device is related to two current analog ratios when issuing charging/discharging current instruction.
It is assumed that the total peak power output of energy storage device in practical die device is 2.5kW, Digital Subsystem simulation electricity
The maximum power that net system needs energy storage to export is 2.5MW, then power amplification multiple is 1000 times, sets power amplification multiple kP
=1000.
When requiring energy storage to charge, energy storage charge power is Pc, then charging current instructs icAre as follows:
ic=Pc/(kp*UDC) (3)
K is compared in charging current simulationcAre as follows:
kc=1/ (kp*UDC) (4)
When requiring energy storage to discharge, energy storage discharge power is Pd, then discharge current instructs idAre as follows:
id=Pd/(kp*Ua*3) (5)
K is compared in discharge current simulationdAre as follows:
kd=1/ (3*kp*Ua) (6)
Wherein, charging current instructs icI is instructed with discharge currentdIt is current value, kpFor power amplification multiple.
(3) feed-in current analog ratio
The sensing measurement device interface includes current sensor and sampling resistor, and current sensor is mounted on practical dynamic model
On the electrical cable of device and power amplifier, sampling resistor is connected with current sensor.Current sensor samples no-load voltage ratio ks
For 1000:1, sampling resistor is 200 Ω.Pass through the current sample of sensing measurement device interface feed-in Digital Subsystem real-time simulator
Signal iinAre as follows:
In formula: iinFor the current sampling signal of feed-in Digital Subsystem real-time simulator, iaFor the electricity of practical die device
Stream.
Based on the power principle of equal effects:
P=3*Uin*iin*ki=3*Ua*ia*kp (8)
In formula, P is the power of feed-in simulating grid system, kiFor feed-in current analog ratio, UinFor the reality of physics subsystem
Border die device accesses the bus phase voltage of electric system, iinBelieve for the current sample of feed-in Digital Subsystem real-time simulator
Number, UaFor power amplifier interface actual motion phase voltage, iaFor the electric current of practical die device.
Feed-in current analog ratio kiAre as follows:
Detailed description of the invention
Fig. 1 is numerical model analysis simulation test platform structural framing figure；
Fig. 2 is 03 line system model of Jinzhai County's golden light；
Fig. 3 is energy accumulation current converter Current harmonic distortion rate figure；
Fig. 4 is energy accumulation current converter DC component figure；
Fig. 5 is energy accumulation current converter power factor (PF) figure.
Specific embodiment
The present invention is further illustrated below in conjunction with figure and specific embodiment.
Fig. 1 is numerical model analysis simulation test platform structural framing figure, including Digital Subsystem, physics subsystem and digital-to-analogue are mixed
Close emulation interface.
The Digital Subsystem is based on eMEGAsim real-time simulator and builds, and physics subsystem is practical die device,
Numerical model analysis emulation interface is the linear power amplifier and high-precision sensing measuring appliance of four quadrant running.The reality of Digital Subsystem
When emulator connection digital-to-analogue hybrid simulation interface power amplifier input terminal, the output end of power amplifier and physics subsystem
The input terminal of the practical die device of system is connected；The sensing measurement device of numerical model analysis emulation interface, be mounted on power amplifier and
At the electrical cable of practical die device, and it is connect with the real-time simulator of Digital Subsystem.
(1) Digital Subsystem
The present invention, come simulating grid system, and carries out numerical calculation using Digital Simulation in real-time simulator, imitative in real time
Outputting and inputting for true device is digital signal, belongs to weak electricity system.The present invention is used by Quebec, CAN water power research institute
The real-time simulator eMEGAsim of exploitation constructs Digital Subsystem, and real-time simulator includes host computer, slave computer, interchanger, work
Industry cable and 1394 cables: host computer is WINDOWS operating system, the softwares such as insertion MATLAB；Slave computer is QNX operation system
System, network interface card are technical grade network interface card；It is attached in the form of IEEE 1394 (firewire) is with " daisy chain " between PC, bandwidth
Reach 400Mb/s or more；It is connected between upper and lower computer using Industrial Ethernet.Furthermore using distributed variable-frequencypump thinking,
Based on Intel CoreTM 2Quad multi-core processor and FPGA technology, the multi tate real-time simulation of large-scale power grid is realized, it can be
The small step-length real time execution of Microsecond grade, to accurately simulate the various electromagnetic transients in current electric system.Therefore,
EMEGAsim emulator is suitable for the real-time simulation of large-scale complex electric power networks, for containing the new energy of a large amount of power electronic devices
Source and new equipment have stronger applicability, such as Wind turbines, photovoltaic power generation, energy storage, FACTS device and alternating current-direct current power grid.
(2) physics subsystem
The physics subsystem is simulated using practical die device, and cocommutative in numerical model analysis emulation interface is true
Electrical power, belong to strong power system.What need new equipment to be tested or existing model were difficult to accurately express using mathematical model sets
It is standby to can be used as physics subsystem, for example, a power equipment such as energy accumulation current converter, inverse control all-in-one machine, light storage all-in-one machine, and
The secondary powers equipment such as intelligent monitoring protection device, anti-islanding protection device.
(3) numerical model analysis emulation interface
Numerical model analysis emulation interface described in numerical model analysis emulation interface of the present invention includes power amplifier interface and sensing
Measuring appliance interface, for realizing the conversion between Digital Subsystem and physics subsystem different types of data.Numerical model analysis emulation
There are two channels for interface tool, and one of channel is the amplification channel from Digital Subsystem to physics subsystem, by Digital Simulation
Obtained digital quantity is changed into the acceptable analog quantity of physical model, and is amplified to corresponding power, passes through power amplifier
Interface is realized.The present invention is using the 21kVA linear power amplifier of France Puissance company exploitation as the realization function
Interface can have the characteristics that the response time is fast, power capacity is higher with four quadrant running.The power amplifier interface packet
Include signal input port, signal amplifying part point, power can two-way flow aviation plug port and artifical resistance part.Signal is defeated
Inbound port is connected with Digital Subsystem real-time simulator, receives the voltage signal from Digital Subsystem real-time simulator, signal
Input port is also connected with signal amplifying part point, and signal amplifying part point is connected with aviation plug, and signal input port passes through letter
Voltage signal from Digital Subsystem real-time simulator is converted into real work voltage by number amplifier section, and is inserted by aviation
Head output virtual voltage.Aviation plug is connected with artifical resistance part, since aviation plug port can carry out power bi-directional stream
Dynamic, when the energy storage device electric discharge in practical die device, the operation power of practical die device is passed by aviation plug port
Artifical resistance part is defeated by be consumed.Another channel of numerical model analysis emulation interface is from physics subsystem to digital subsystem
The sampling feedback channel of system is converted into and matches with Digital Simulation by the analog quantity parameter of physical model actual motion by sampling
Digital quantity, feedback arrive Digital Subsystem.The sensing measurement device interface is put by being mounted on practical die device and power
Current sensor on the electrical cable of big device, acquires the running current of practical die device, is translated into voltage signal,
The real-time simulator of Digital Subsystem is uploaded to by board transmission line of information, is realized from physics subsystem to Digital Subsystem
Sampling feedback.
The workflow of simulation test platform of the present invention are as follows:
The real-time simulator simulating grid system of the Digital Subsystem, should by the die device access of physics subsystem
Some node in network system is emulated, and is converted voltage signal for a node voltage in network system, is passed through
BNC coaxial connecting line is transferred to the power amplifier interface of numerical model analysis emulation interface, and power amplifier interface puts the signal
Greatly real work voltage, and the practical die device by the aviation plug port of three-phase and four-line for physics subsystem accesses；
Later, the practical running electric current of die device is acquired by the current sensor of sensing measurement device interface, and be converted into
Voltage signal, the real-time simulator of Digital Subsystem is uploaded to by board transmission line of information, and then analyzes the practical dynamic model dress
Influence of the access set to network system.
Fig. 2 is 03 line system model of Jinzhai County's golden light, using node 57 as the access point of energy accumulation current converter, interface algorithm
Specific calculating is as follows:
It, must be according to the practical die device of physics subsystem for the authenticity and accuracy for guaranteeing numerical model analysis emulation experiment
Numerical model analysis simulated digital interface algorithm is arranged in the factors such as capacity and network voltage grade, i.e., simulation ratio, the present invention mainly calculate
Voltage, energy storage charging and discharging currents and feed-in current analog ratio.Voltage analog is than the simulation electricity to need to export in Digital Subsystem
The coefficient of the node voltage signal of net, i.e. node voltage are multiplied by voltage analog than being Digital Subsystem to power amplifier transfer
Voltage signal values.The energy storage charging/discharging current instruction according to acquired in simulation algorithm is multiplied by energy storage charge and discharge electricity in Digital Subsystem
Flow field simulation is than the charging/discharging current instruction for the energy storage device in practical die device.Pass through sensing measurement device feed-in number subsystem
The current signal of system is multiplied by feed-in current analog than the electric current for network system in feed-in Digital Subsystem.
(1) voltage analog ratio
The practical die device of physics subsystem is connect with Digital Subsystem by power amplifier interface, power amplifier
The voltage change ratio of interface is fixed value 56.6.
The bus phase voltage of practical die device access electric system is Uin, a reference value Ur；Power amplifier operation is real
It is U that border, which runs phase voltage,a, a reference value 220V, based on the voltage per unit value principle of equal effects:
Ur*ku* (1) 56.6=220
Voltage analog ratio kuAre as follows:
ku=220/ (Ur*56.6) (2)
(2) energy storage charging and discharging currents simulate ratio
The energy storage device of practical die device reference voltage in charge and discharge is different, when energy storage charging, with DC side electricity
Press UDCOn the basis of；When energy storage electric discharge, to exchange side voltage UaOn the basis of；So that reality of the digital display circuit to physics subsystem
Border die device is related to two current analog ratios when issuing charging/discharging current instruction.
It is assumed that the total peak power output of energy storage device is 2.5kW, the maximum power that network system needs energy storage to export is
2.5MW, then power amplification multiple is 1000 times, sets power amplification multiple kP=1000.
When requiring energy storage to charge, energy storage charge power is Pc, then charging current instructs are as follows:
ic=Pc/(kp*UDC) (3)
K is compared in charging current simulationcAre as follows:
kc=1/ (kp*UDC) (4)
When requiring energy storage to discharge, energy storage discharge power is Pd, then discharge current instructs are as follows:
id=Pd/(kp*Ua*3) (5)
K is compared in discharge current simulationdAre as follows:
kd=1/ (3*kp*Ua) (6)
(3) feed-in current analog ratio
The sensing measurement device interface includes current sensor and sampling resistor, and current sensor is mounted on practical dynamic model
On the electrical cable of device and power amplifier, sampling resistor is connected with current sensor.Current sensor samples no-load voltage ratio ks
For 1000:1, sampling resistor is 200 Ω.Pass through the current sampling signal of sensing measurement device interface feed-in digital simulator are as follows:
In formula: iinFor the current sampling signal of feed-in Digital Subsystem real-time simulator, iaFor the electricity of practical die device
Stream.
Based on the power principle of equal effects:
P=3*Uin*iin*ki=3*Ua*ia*kp (8)
In formula, P is the power of feed-in simulating grid system, kiFor feed-in current analog ratio, UinFor the reality of physics subsystem
Border die device accesses the bus phase voltage of electric system, iinBelieve for the current sample of feed-in Digital Subsystem real-time simulator
Number, UaFor power amplifier interface actual motion phase voltage, iaFor the electric current of practical die device.
Feed-in current analog ratio kiAre as follows:
Fig. 3 is energy accumulation current converter Current harmonic distortion rate figure, and the access numerical model analysis emulation testing of 4kW energy accumulation current converter is put down
The power amplifier of platform, interface voltage AC220V.Energy accumulation current converter is arranged to work under current source mode, utilizes power analysis
It is 2.7% that instrument, which measures its Current harmonic distortion rate,.
Fig. 4 is the DC component figure of the energy accumulation current converter of measurement.
Fig. 5 is active power when being 2.33kW, the power factor of energy accumulation current converter, value 1.
Claims (7)
1. a kind of numerical model analysis simulation test platform, it is characterised in that: the numerical model analysis simulation test platform includes number
Subsystem, physics subsystem and digital-to-analogue hybrid simulation interface；The Digital Subsystem is based on eMEGAsim real-time simulator and takes
It builds, physics subsystem is practical die device, and numerical model analysis emulation interface is the linear power amplifier interface of four quadrant running
With sensing measurement device interface；The power amplifier interface of the real-time simulator connection digital-to-analogue hybrid simulation interface of Digital Subsystem
The input terminal of input terminal, the practical die device of the output end and physics subsystem of power amplifier interface is connected；Numerical model analysis
The sensing measurement device interface of emulation interface and the real-time simulator of Digital Subsystem connect；The numerical model analysis emulation testing is flat
Platform realizes the matching of Digital Subsystem and physics subsystem by numerical model analysis emulation interface algorithm, carries out practical die device
Emulation testing.
2. numerical model analysis simulation test platform as described in claim 1, it is characterised in that: the numerical model analysis emulation interface
Including power amplifier interface and sensing measurement device interface, for realizing Digital Subsystem and physics subsystem different types of data
Between conversion；There are two channels for the numerical model analysis emulation interface tool, and one of channel is from Digital Subsystem to object
The amplification channel of subsystem is managed, the digital quantity that Digital Simulation is obtained is changed into the acceptable analog quantity of physics subsystem, and
It is amplified to corresponding power, is realized by power amplifier interface；Another channel of the numerical model analysis emulation interface be from
Physics subsystem is to the sampling feedback channel of Digital Subsystem, by the analog quantity parameter of physics subsystem actual motion by adopting
Sample is converted into and arrives Digital Subsystem with the matched digital quantity of Digital Simulation, feedback, realized by sensing measurement device interface.
3. numerical model analysis simulation test platform as claimed in claim 2, it is characterised in that: the power amplifier interface packet
Include signal input port, signal amplifying part point, power can two-way flow aviation plug port and artifical resistance part；Signal is defeated
Inbound port is connected with Digital Subsystem real-time simulator, receives the voltage signal from Digital Subsystem real-time simulator, signal
Input port is also connected with signal amplifying part point, and signal amplifying part point is connected with aviation plug, and signal input port passes through signal
Voltage signal from Digital Subsystem real-time simulator is converted into real work voltage by amplifier section, and passes through aviation plug
Export virtual voltage；Aviation plug is connected with artifical resistance part, practical dynamic when the electric discharge of the energy storage device of practical die device
The operation power of mold device is consumed by aviation plug port transmission to artifical resistance part.
4. numerical model analysis simulation test platform as claimed in claim 2, it is characterised in that: the sensing measurement device interface is logical
The current sensor being mounted on practical die device and power amplifier electrical cable is crossed, the fortune of practical die device is acquired
Row electric current, is translated into voltage signal, and the real-time simulator of Digital Subsystem is uploaded to by board transmission line of information, realizes
Sampling feedback from physics subsystem to Digital Subsystem.
5. numerical model analysis simulation test platform as claimed in claim 4, it is characterised in that: the numerical model analysis emulation interface
Sensing measurement device interface include current sensor and sampling resistor, current sensor is mounted on practical die device and power is put
On the electrical cable of big device, sampling resistor is connected with current sensor.
6. numerical model analysis simulation test platform as described in claim 1, it is characterised in that: the work of the simulation test platform
Make process are as follows:
The practical die device of physics subsystem is accessed the electricity by the real-time simulator simulating grid system of the Digital Subsystem
Some node in net system is emulated, and is converted voltage signal for a node voltage in network system, is passed through BNC
Coaxial connecting line is transferred to the power amplifier interface of numerical model analysis emulation interface, amplifies the signal through power amplifier interface
For real work voltage, and the practical die device by aviation plug port for physics subsystem accesses；Later, pass through sensing
The current sensor of measuring appliance interface acquires the running current of the practical die device, and is converted into voltage signal, passes through plate
Card information transmission line uploads to the real-time simulator of Digital Subsystem, and then analyzes the access of the practical die device to power grid system
The influence of system.
7. numerical model analysis simulation test platform as described in claim 1, it is characterised in that: the numerical model analysis emulation interface
Algorithm is as follows:
The numerical model analysis emulation interface algorithm according to the practical die device of physics subsystem capacity and network voltage grade
Numerical model analysis simulated digital interface algorithm is set, i.e. simulation ratio；Voltage analog is than the simulation to need to export in Digital Subsystem
The coefficient of the node voltage signal of network system, i.e. node voltage are Digital Subsystem to power amplifier multiplied by voltage analog ratio
The voltage signal values of transmission；Digital Subsystem energy storage charging/discharging current instruction according to acquired in simulation algorithm is multiplied by energy storage charge and discharge
Charging/discharging current instruction of the electric current analog than the energy storage device for practical die device；Pass through sensing measurement device interface feed-in number
The current signal of word subsystem multiplied by feed-in current analog than the electric current for simulating grid system described in feed-in, it is specific as follows:
(1) voltage analog ratio
The practical die device of physics subsystem is connect with Digital Subsystem by power amplifier interface, power amplifier interface
Voltage change ratio be fixed value 56.6；
The bus phase voltage of practical die device access electric system is Uin, a reference value Ur；The practical fortune of power amplifier operation
Row phase voltage is Ua, a reference value 220V, based on the voltage per unit value principle of equal effects:
Ur*ku* (1) 56.6=220
Voltage analog ratio kuAre as follows:
ku=220/ (Ur*56.6) (2)
(2) energy storage charging and discharging currents simulate ratio
Energy storage die device reference voltage in charge and discharge is different, when energy storage charging, with DC voltage UDCOn the basis of；Work as storage
When can discharge, to exchange side voltage UaOn the basis of, therefore Digital Subsystem is issued to the practical die device of physics subsystem and is filled
Discharge current is related to two current analog ratios when instructing:
It is assumed that the total peak power output of energy storage device in practical die device is 2.5kW, simulating grid system needs energy storage
The maximum power of output is 2.5MW, then power amplification multiple is 1000 times, sets power amplification multiple kP=1000；
When requiring energy storage to charge, energy storage charge power is Pc, then charging current instructs icAre as follows:
ic=Pc/(kp*UDC) (3)
K is compared in charging current simulationcAre as follows:
kc=1/ (kp*UDC) (4)
When requiring energy storage to discharge, energy storage discharge power is Pd, then discharge current instructs idAre as follows:
id=Pd/(kp*Ua*3) (5)
K is compared in discharge current simulationdAre as follows:
kd=1/ (3*kp*Ua) (6)
In formula, kpFor power amplification multiple；
(3) feed-in current analog ratio
The current sensor of the sensing measurement device interface of numerical model analysis emulation interface samples no-load voltage ratio ksFor 1000:1, sampling resistor is
200Ω；Pass through the current sampling signal i of sensing measurement device interface feed-in Digital Subsystem real-time simulatorinAre as follows:
In formula: iinFor the current sampling signal of feed-in Digital Subsystem real-time simulator, iaFor the electric current of practical die device；
Based on the power principle of equal effects:
P=3*Uin*iin*ki=3*Ua*ia*kp (8)
In formula, P is the power of feed-in simulating grid system, kiFor feed-in current analog ratio, UinIt is dynamic for the reality of physics subsystem
Mold device accesses the bus phase voltage of electric system, iinFor the current sampling signal of feed-in Digital Subsystem real-time simulator, Ua
For power amplifier interface actual motion phase voltage, iaFor the actual current of practical die device；
Feed-in current analog ratio kiAre as follows:
Priority Applications (1)
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