CN208110887U - A kind of power grid simulation system based on RT-LAB - Google Patents
A kind of power grid simulation system based on RT-LAB Download PDFInfo
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- CN208110887U CN208110887U CN201721179753.9U CN201721179753U CN208110887U CN 208110887 U CN208110887 U CN 208110887U CN 201721179753 U CN201721179753 U CN 201721179753U CN 208110887 U CN208110887 U CN 208110887U
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- 230000003750 conditioning effect Effects 0.000 claims abstract description 33
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Abstract
A kind of power grid simulation system based on RT-LAB, including RT-LAB analogue system, signal output conditioning system, grid stimulating device and signal collection modulation system.The input terminal connection signal of RT-LAB analogue system acquires conditioning system；The output end connection signal of RT-LAB analogue system exports conditioning system；Signal exports the input terminal of conditioning system connection grid stimulating device；Grid stimulating device acquires conditioning system by utility grid, the output end connection signal of grid stimulating device；Another output end of grid stimulating device exports analog voltage.The utility model passes through the cooperation of input and output signal conditioning system, realize real-time accurate tracking and output of the grid stimulating device to electric network model voltage in RT-LAB real-time emulation system, total power test of the achievable common network distribution device in the case where including the various power grid environments such as high-low voltage, voltage fluctuation and transition, voltage distortion, completely examines its function and performance.
Description
Technical field
The utility model patent is related to a kind of power grid simulation system based on RT-LAB, belongs to emulation testing technical field.
Background technique
RT-LAB is a kind of high-speed figure analogue system, has operational capability strong, the advantage of rich interface, in power train
The fields such as system, automatic control are using more and more extensive deep.The pure software modular concept emulation carried out based on RT-LAB
Or controller signals emulation can only carry out functional authorization to control principle or control strategy, cannot achieve the power stage to device
Emulation, also just can not comprehensively and effectively verifying attachment performance.The critical bottleneck of power stage emulation based on RT-LAB is high-precision
The four-quadrant power amplifier of degree.Not only price is very expensive for high-precision four-quadrant power amplifier, and measured power is general
In 60kVA hereinafter, cannot achieve the Operation at full power of the devices such as common low pressure SVG and route pressure regulator.
And the test platform of low-voltage distribution network is built by physical device, need to purchase a large amount of powerful load equipments, tune
Depressor etc., experiment consumption power is big, poor expandability, it is difficult to realize to power grid instantaneous process such as voltage swells and rapid drawdown and failure
The simulation of situation, it is difficult to which tested device is tested in realization comprehensively.
Summary of the invention
The design scheme for the power grid simulation system based on RT-LAB that the purpose of the utility model is to provide a kind of, it is intended to
There is provided that a kind of development cost is low, can more fully realize simulation to low voltage electric network, properer simulation because of load variations and
Voltage fluctuation caused by failure, protection mechanism and performance of the test device in voltage transients, it is ensured that the safety of device is steady
Fixed operation.
The technical solution of the utility model is as follows：A kind of power grid simulation system based on RT-LAB includes RT-LAB emulation system
System, signal output conditioning system, grid stimulating device and signal collection modulation system.The input terminal of the RT-LAB analogue system
Connection signal acquires conditioning system；The output end connection signal of RT-LAB analogue system exports conditioning system；Signal output conditioning
The input terminal of system connection grid stimulating device；Grid stimulating device is by utility grid, the output end of grid stimulating device
Connection signal acquires conditioning system；Another output end of grid stimulating device exports analog voltage.
The grid stimulating device includes coupling transformer, breaker, output inductor and capacitor, three-phase and four-line
Inverter bridge and DC capacitor processed；Primary side winding one end of coupling transformer connects utility network, the primary side winding other end
Export analog voltage；Output filter capacitor is connected after vice-side winding one end of coupling transformer is in parallel, vice-side winding is another
Three-phase four-wire system inverter bridge is connected after end series connection output inductor；DC capacitor is in parallel with three-phase four-wire system inverter bridge.
The signal output conditioning system passes through the electricity that photoelectric signal transformation circuit generates the RT-LAB analogue system
Net simulator controls signal（Killer switch, relay, PWM electric impulse signal）Compatible optical signal is converted into power grid mould
Quasi- device is controlled.
The signal collection modulation system simulates the power grid with sensor, signal amplification circuit and voltage follower circuit
The output voltage of device carries out signal compatibility conditioning, and inputs the RT-LAB analogue system by A/D sampling module, using as
Control a part of grid stimulating device desired signal.
The grid stimulating device receives the control signal that signal output conditioning system passes over, complete start and stop, protection,
Every control function such as output realizes accurate tracking and output to the RT-LAB analogue system analog voltage.
The grid stimulating device further includes part auxiliary device and circuit such as contactor, buffer resistance, relay, voltage
Current temperature sensor, device for power switching driving circuit, radiator and radiator fan, photoelectric conversion circuit etc..The power grid
After simulator receives signal stream by photoelectric conversion circuit, signal is exported into the control that conditioning system is transmitted by optical fiber
Signal is converted to electric signal, realizes the real-time control to grid stimulating device；Grid stimulating device must also meet tested simultaneously
The power capacity requirement of system, to realize the capacity operation of system under test (SUT).
The utility model has the beneficial effects that the utility model passes through the cooperation of input and output signal conditioning system, reach
To the control to grid stimulating device hardware, realize grid stimulating device to electric network model voltage in RT-LAB real-time emulation system
Real-time accurate tracking and output, can complete common network distribution device is including that high-low voltage, voltage fluctuation and transition, voltage are abnormal
Total power test under the various power grid environments such as change, completely examines the function of its power control, output accuracy and protection etc.
And performance.
Detailed description of the invention
Fig. 1 is the grid stimulating device structural block diagram based on RT-LAB；
Fig. 2 is grid stimulating device main circuit structure figure；
In figure, 1 is RT-LAB analogue system；2 export conditioning system for signal；3 be the first signal stream；4 be utility network；
5 be grid stimulating device；6 be second signal stream；7 be signal collection modulation system；8 export for analog voltage.
Specific embodiment
Specific embodiment of the present utility model is as shown in Figure 1.
A kind of power grid simulation system based on RT-LAB of the present embodiment includes RT-LAB analogue system 1, signal output conditioning
System 2, grid stimulating device 5 and signal collection modulation system 7.The input terminal connection signal of the RT-LAB analogue system 1 is adopted
Collect conditioning system 7；The output end connection signal of RT-LAB analogue system 1 exports conditioning system 2；Signal exports conditioning system 2 and connects
Get access to grid the input terminal of simulator 5；Grid stimulating device 5 is powered by utility network 4, and the output end of grid stimulating device 5 connects
Connect signal collection modulation system 7；Another output end of grid stimulating device 5 exports analog voltage 8.
Signal output conditioning system 2 converts the RT-LAB digital signal level exported with photoelectric conversion circuit, with
First signal stream 3 is exported to grid stimulating device 5.First signal stream 3 mainly includes grid stimulating device killer switch, relay
Device, contactor, power device the switching drive signals such as pwm signal, comprehensive real-time control to grid stimulating device is realized with this
System makes its output and electric network model accurately consistent voltage.
The capacity of utility network 4 needs to meet the sum of capacity requirement and loss of grid stimulating device 6 of system under test (SUT), is
Grid stimulating device provides power, is connected in system under test (SUT) capacity operation and provides condition.
It is illustrated in figure 2 the main circuit structure block diagram of grid stimulating device 5.5 main circuit of grid stimulating device mainly includes
Coupling transformer, breaker, output inductor and capacitor, the three-phase four-wire system inverter being made of device for power switching
Bridge, DC capacitor etc..In addition grid stimulating device 5 further includes auxiliary device and circuit, as contactor, buffer resistance, relay,
Voltage and current temperature sensor, device for power switching driving circuit, radiator and radiator fan, photoelectric conversion circuit etc..Power grid
After simulator receives the first signal stream 3 by photoelectric conversion circuit, signal output conditioning system is transmitted by optical fiber
Control signal be converted to electric signal, realize the real-time control to grid stimulating device.Grid stimulating device 5 must also expire simultaneously
The power capacity requirement of sufficient system under test (SUT), to realize the capacity operation of system under test (SUT).
Signal collection modulation system 7 acquires the voltage and current of grid stimulating device output, switch state, event by sensor
The second signal stream 6 that barrier protection signal is formed, by being transferred to RT-LAB emulation test system, input control model after conditioning
Real-time closed-loop control is participated in, realizes accurate real-time tracking.
Claims (5)
1. a kind of power grid simulation system based on RT-LAB, which is characterized in that the system comprises RT-LAB analogue systems, signal
Export conditioning system, grid stimulating device and signal collection modulation system；The input terminal of the RT-LAB analogue system connects letter
Number acquisition conditioning system；The output end connection signal of RT-LAB analogue system exports conditioning system；Signal exports conditioning system and connects
Get access to grid the input terminal of simulator；Grid stimulating device connects letter by utility grid, the output end of grid stimulating device
Number acquisition conditioning system；Another output end of grid stimulating device exports analog voltage；
The grid stimulating device includes that coupling transformer, breaker, output inductor and capacitor, three-phase four-wire system are inverse
Become device bridge and DC capacitor；Primary side winding one end of coupling transformer connects utility network, the output of the primary side winding other end
Analog voltage；Output filter capacitor, vice-side winding other end string are connected after vice-side winding one end of coupling transformer is in parallel
Three-phase four-wire system inverter bridge is connected after joining output inductor；DC capacitor is in parallel with three-phase four-wire system inverter bridge.
2. a kind of power grid simulation system based on RT-LAB according to claim 1, which is characterized in that the signal output
Conditioning system controls signal by the grid stimulating device that photoelectric signal transformation circuit generates the RT-LAB analogue system and turns
Compatible optical signal is changed into control grid stimulating device.
3. a kind of power grid simulation system based on RT-LAB according to claim 1, which is characterized in that the signal acquisition
Conditioning system carries out letter with the output voltage of sensor, signal amplification circuit and voltage follower circuit to the grid stimulating device
Number compatible conditioning, and the RT-LAB analogue system is inputted by A/D sampling module, as needed for control grid stimulating device
A part of signal.
4. a kind of power grid simulation system based on RT-LAB according to claim 1, which is characterized in that
The grid stimulating device receives the control signal that signal output conditioning system passes over, and completes start and stop, protection, output
Every control function realizes accurate tracking and output to the RT-LAB analogue system analog voltage.
5. a kind of power grid simulation system based on RT-LAB according to claim 2, which is characterized in that the power grid simulation
Device controls signal, including killer switch, relay, PWM electric impulse signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721179753.9U CN208110887U (en) | 2017-09-15 | 2017-09-15 | A kind of power grid simulation system based on RT-LAB |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721179753.9U CN208110887U (en) | 2017-09-15 | 2017-09-15 | A kind of power grid simulation system based on RT-LAB |
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| CN208110887U true CN208110887U (en) | 2018-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882397A (en) * | 2021-01-26 | 2021-06-01 | 王鹤霏 | Simulation system interface equipment of power grid and simulation system of power grid |
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2017
- 2017-09-15 CN CN201721179753.9U patent/CN208110887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882397A (en) * | 2021-01-26 | 2021-06-01 | 王鹤霏 | Simulation system interface equipment of power grid and simulation system of power grid |
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