CN214255737U

CN214255737U - Open-source ship shore power hybrid micro-grid scientific research test platform

Info

Publication number: CN214255737U
Application number: CN202120376691.0U
Authority: CN
Inventors: 牛玺童; 韩非
Original assignee: Commercial Aircraft Control Information Technology Shanghai Co ltd
Current assignee: Commercial Aircraft Control Information Technology Shanghai Co ltd
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-09-21
Anticipated expiration: 2031-02-19

Abstract

A shore power hybrid micro-grid scientific research test platform for an open-source ship comprises a real-time simulation controller and a fan simulator, wherein the real-time simulation controller is connected with a PC (personal computer), a shore power simulator, a photovoltaic simulator and a battery simulator; the photovoltaic simulator and the battery simulator are respectively connected to a direct current bus through a DCDC converter, the direct current bus is also connected with a first DCAC converter in a hanging mode, and the alternating current bus is connected with the shore power simulator through a grid-connected switch; the fan simulator is connected with the second filter through the second DCAC converter connected with the two backrests, signals of the fan simulator are sent out by the real-time simulation controller through the signal adapter plate, and grid-connected switch signals are connected into the real-time simulation controller through the signal adapter plate. The utility model overcomes prior art's is not enough, to the problem that the comprehensive platform development efficiency of open source is low, have the potential safety hazard, introduced the real-time simulation controller and the digital signal switching system of the graphical programming mode based on SIMULINK and carried out the defect handling.

Description

Open-source ship shore power hybrid micro-grid scientific research test platform

Technical Field

The utility model relates to an open source scientific research test technical field of little electric wire netting, concretely relates to open source boats and ships bank electricity mixes little electric wire netting scientific research test platform.

Background

With the increasing exhaustion of fossil energy and the increasing emphasis of governments on environmental pollution, electric power and new energy are gradually introduced into ship energy systems. The country encourages the ship to use shore power after the ship arrives at a port, and the ship leaves the port to support by laws and policies; meanwhile, the novel energy is efficiently and reasonably utilized in a ship power supply system through the energy storage equipment and the power electronic device, and the attention of researchers at home and abroad is gradually attracted. Most of the traditional experimental platforms do not have the conditions of shore power research and independent ship mixed load power supply, and mature frequency converters are adopted in more complex platforms, so that researchers can not deeply research the problem of bottom layer control; the open-source converter is usually a programming mode and an experimental method based on a DSP/FPGA, a large amount of time is consumed for a researcher to carry out experiments, problems possibly existing in the control process are often difficult to find intuitively, potential safety hazards caused by disorder of wiring harnesses exist, the open-source converter has the defects of slow development process, non-intuitive research and unsafety, the researcher who just enters the door is difficult to master, and iteration of scientific research results is extremely disadvantageous. Therefore, in order to reduce the time cost of scientific research and improve the development efficiency, it is increasingly important to design a high-efficiency scientific research test platform with comprehensive structure and open source at the bottom layer.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a little electric wire netting scientific research test platform is mixed to open source boats and ships bank electricity has overcome the not enough of prior art, to the problem that the platform development efficiency is low, have the potential safety hazard of opening the source, has introduced the real-time simulation controller and the digital signal switching system of the graphical programming mode based on SIMULINK and has carried out the defect handling. The method is used for relevant scientific research experiments such as PWM (pulse-width modulation) bottom layer control, power coordination control, parking grid-connected power energy storage, direct current bus voltage closed-loop control test, alternating current bus voltage closed-loop control test and the like of a ship shore power system.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a shore power hybrid micro-grid scientific research test platform for an open-source ship comprises a real-time simulation controller and a fan simulator, wherein the real-time simulation controller is in signal connection with a PC (personal computer) and the shore power simulator respectively through an Ethernet, the real-time simulation controller is in signal connection with a photovoltaic simulator through a communication interface, and the real-time simulation controller is connected with a battery simulator through a CAN (controller area network);

the photovoltaic simulator and the battery simulator are respectively connected to a direct current bus through a DCDC converter, a first DCAC converter is further connected to the direct current bus in a hanging mode, the first DCAC converter is connected with an alternating current bus through a first filter, and the alternating current bus is connected with a shore power simulator through a grid-connected switch;

the fan simulator is connected with a second filter through a second DCAC converter connected with two back rests, the second filter is connected with an alternating current bus, the DCDC converter, the first DCAC converter, the second DCAC converter, the first filter and the second filter are all connected into a real-time simulation controller through a signal adapter plate, an analog quantity voltage signal and an enabling signal of the fan simulator are sent out by the real-time simulation controller through the signal adapter plate, and an output signal of the grid-connected switch is connected into the real-time simulation controller through the signal adapter plate.

Preferably, the system further comprises a direct current electronic load, wherein the direct current electronic load is hung on a direct current bus; the direct current electronic load is in signal connection with the real-time simulation controller through the Ethernet.

Preferably, the system further comprises an alternating current electronic load, wherein the alternating current electronic load is hung on an alternating current bus, and the alternating current electronic load is in signal connection with the real-time simulation controller through a communication interface.

The utility model provides a little electric wire netting scientific research test platform is mixed to open source boats and ships bank electricity. The method has the following beneficial effects: a new energy mode is adopted, and a mode of hybrid power supply of alternating current and direct current loads is adopted, so that the research of a shore power system is enriched;

the real-time simulation controller has the real-time acquisition, calculation and control capabilities of a DSP/FPGA, and compared with a traditional complicated code programming mode, a graphical programming-based mode is adopted, so that a researcher can quickly perform a physical experiment after completing a simulink off-line simulation experiment, and the theoretical physical experiment conversion verification efficiency is effectively improved;

the adopted PC can display the variables related to the platform in real time in a curve and data mode, and meanwhile, control parameters and system parameters can be trimmed in real time, so that an intuitive experimental mode is provided, researchers can find problems in the research and development process quickly, and the current situation that the experimental process is not intuitive in the traditional mode can be effectively improved;

the utility model discloses a DCDC converter, DCAC converter and signal keysets can be so that the system variable can accomplish the butt joint with software programming's interface fast, not only makes traditional complex structure kind because the difficult problem that the potential safety hazard can not open the source obtain solving, and is more rapid to the change handing-over of research moreover, has promoted scientific research iterative efficiency effectively.

Drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of a medium-sized ship microgrid of the present invention;

the reference numbers in the figures illustrate:

1. a real-time simulation controller; 2. a PC machine; 3. a direct current electronic load; 4. a shore power simulator; 5. a photovoltaic simulator; 6. an alternating current electronic load; 7. a battery simulator; 8. a DCDC converter; 9. a direct current bus; 10. a first DCAC converter; 11. a first filter; 12. an alternating current bus; 13. a grid-connected switch; 14. a fan simulator; 15. a second DCAC converter; 16. a second filter; 17. a signal transfer board.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention.

As shown in fig. 1-2, the open-source ship shore power hybrid micro-grid scientific research test platform comprises a real-time simulation controller 1 and a fan simulator 14, wherein the real-time simulation controller 1 is in signal connection with a PC 2 and a shore power simulator 4 through ethernet respectively, the real-time simulation controller 1 is in signal connection with a photovoltaic simulator 5 through an RS485 communication interface, and the real-time simulation controller 1 is connected with a battery simulator 7 through a CAN;

the photovoltaic simulator 5 and the battery simulator 7 are respectively connected to a direct current bus 9 through a DCDC converter 8, the direct current bus 9 is also connected with a first DCAC converter 10 in a hanging mode, the first DCAC converter 10 is connected with an alternating current bus 12 through a first filter 11, and the alternating current bus 12 is connected with the shore power simulator 4 through a grid-connected switch 13;

the fan simulator 14 is connected with a second filter 16 through two second DCAC converters 15 connected with the back of the chair, analog quantity voltage signals such as input and output voltage and current, PWM, fault signals, enable signals and other DIO signals of the DCDC converter 8, the first DCAC converter 10 and the second DCAC converters 15 are all connected into the real-time simulation controller 1 through a signal adapter plate 17; the voltage and current collected by the first filter 11 and the second filter 16 are converted into analog voltage signals, the analog voltage signals are connected to the real-time simulation controller 1 through the signal adapter plate 17, the analog voltage signals and the enabling signals of the fan simulator 14 are sent out by the real-time simulation controller 1 through the signal adapter plate 17, and the analog voltage signals and the switch DIO signals output by the grid-connected switch 13 collecting the voltage and current on the grid side are connected to the real-time simulation controller 1 through the signal adapter plate 17. A user obtains the sdf compilation file after graphical programming compilation is carried out on the PC 2, the sdf compilation file is downloaded to the real-time simulation controller 1 through the Ethernet, the measurement and control software can be connected with the real-time simulation controller, and the sdf compilation file downloaded to the real-time simulation controller by the user is loaded, so that scientific research and test can be carried out in real time.

In this embodiment, the system further comprises a direct current electronic load 3 and an alternating current electronic load 6, wherein the direct current electronic load 3 is hung on a direct current bus 9; the direct current electronic load 3 is in signal connection with the real-time simulation controller 1 through the Ethernet. The alternating current electronic load 6 is hung on the alternating current bus 12, and the alternating current electronic load 6 is in signal connection with the real-time simulation controller 1 through an RS232 communication interface.

In this embodiment, the real-time simulation controller 1 employs a microllabbox of desbys, which includes GNU compiler, CDP control development software package, RTICAN interface module, rteothernet ethernet interface template, 1302T hardware. The system is used for acquiring voltage signals output by processing each path of voltage and current sensor in the system; collecting a driving fault signal, an overvoltage signal, an overcurrent signal and an overtemperature signal which are switched by the signal switching board, and outputting a PWM signal, an enable signal thereof, a fault reset signal and the like; loading a bottom control program and carrying out real-time operation; communicating with a battery simulator, a wind power generation simulator and a photovoltaic simulator; and is used to connect with the PC 2 via ethernet so that the test software can display the variables in real time.

In the embodiment, the signal adapter board 17 adopts SD800-1202 of Unitech, has a digital signal isolation protection function, can be compatible with a specified real-time simulation controller, has no less than 32 analog acquisition signals and no less than 16 output analog voltage signals; the PWM signal is not less than 24 paths, 5V/20mA is adopted, and the dead time is about 2 us; the digital signal/switching value input is not less than 10 paths and 5V/20mA, and the differential signal input is not less than 6 pairs and 5V/20 mA. Adapting and switching signal interface forms of a DCDC converter, a DCAC converter, a filter, a grid-connected switch and a real-time simulation controller; the DIO digital signal channel for protecting the real-time simulation controller is not damaged due to connection with the outside, and long-term after-sale maintenance time is avoided; the stability and the immunity of high-precision digital signals such as an encoder, PWM and the like are improved by adopting digital signal processing modes such as isolation optimization and the like; the method adopts a customized hardware dead zone setting mode to save channels for the measurement and control system and reduce the set range of software dead zones.

In the present embodiment, the DCDC converter 8 employs the SD800 series of Unitech, (1) the rated input voltage DC 300V; (2) rated output power is 30 kW; (3) voltage sampling module (2 way): the precision is 0.5%, the response time is less than 40us, and the frequency is 200 Hz; (4) current sampling module (2-way): the precision is 0.5%, the response time is less than 40us, and the frequency is 100 kHz; (5) the output voltage is 600V; (6) a protection value of 700V; (7) the circuit board is designed by adopting 6 layers, and has the characteristics of strong anti-interference capability, high signal reliability, strong EMC electromagnetic compatibility function and the like; (8) digital quantity DI input function module: 3-path high-speed/common bidirectional isolation input with the maximum frequency of 50 KHZ; (9) digital quantity DO output function module: 3-path high-speed/common isolation output, the maximum frequency of 50KHZ, the current of 3A/AC250V and the current of 1A/DC 30V; (10) and (4) protection function: braking function, bus overvoltage, output current overcurrent, over-temperature protection and the like.

In this embodiment, the first DCAC converter 10 and the second DCAC converter 15 adopt the SD800 series of Unitech, two-level three-phase half-bridge four-arm, and support the control of various motors (an ac/dc linear motor or an ac asynchronous/synchronous motor or a dc brushless motor) and the control of a microgrid; supporting various encoder types (a grating ruler or Hall or 5V (or 24V) single-end/differential incremental or absolute type or rotary encoder); support encoder digital/analog signal output, support high resolution/precision encoders (such as 2500 lines/3600 lines/5000 lines, etc.); input voltages of various specifications are supported: the single-phase 220V/three-phase 380V AC input, the DC input is 0-600V, the rated output power (current): the 30KW (50A) supports a variety of topologies: single-phase full bridge, two-level three-phase half bridge; the bus voltage supports a rated direct current DC600V, and the maximum voltage is 720V (overvoltage threshold); the overload capacity currently supports 2.5 times of overload (overload time is 1 second) at most; voltage sampling module (total 7 paths): 1 bus voltage path, 3 network access voltage sampling paths and 3 load voltage sampling paths; precision 1%, response time less than 40us, frequency 100Hz current sampling module (13 total ways): 1 bus current, 4 driver UVWN output currents, 4 network access current samples and 4 load current samples; precision 1%, response time is less than 1us, frequency 100KHz digital quantity DI input function module: 3-path high-speed/common bidirectional isolation input with the maximum frequency of 50 KHZ; digital quantity DO output function module: 3-path high-speed/common isolation output, the maximum frequency of 50KHZ, the current of 3A/AC250V and the current of 1A/DC 30V; and (4) protection function: braking function, bus overvoltage, UVW output current overcurrent, over-temperature protection and the like.

In this embodiment, the battery simulator 7 may perform constant current, constant voltage, and constant power discharge, each channel has a power of 2.5kW, a voltage of 500V module, and multi-channel battery module state simulation, performs battery state simulation according to a battery core curve behavior, may set a common parameter of a battery pack and a fast self-defined output initial state, and may perform a battery discharge energy recovery function, and may perform communication using a CAN without interrupting charge-discharge current switching, simulate a battery chargeable and dischargeable characteristic, and may be used for a bidirectional component application, and simulate a charge mode conversion (CC-CV). The simulation system is used for receiving the real-time simulation controller instruction, simulating the charge and discharge performance and the charge and discharge curve of different batteries, and transmitting battery data to the real-time simulation controller 1 in real time.

In the embodiment, the voltage output range of the photovoltaic simulator 5 is 0-150V/600V/1000V/1800V; the AC input voltage range is 200/220Vac,380/400Vac,440/480 Vac; the 3U/18kW high-power density module can be simply connected in parallel with a master/slave; the solar cell array simulates the I-V function (the mathematical formula of the I-V curve of built-in EN50530& Sandia); the output characteristics (Fill Factor) of various solar cells can be simulated; the I-V curves under different temperatures and illumination can be simulated; has a very small Leakage Current; accurate voltage and current measurement; the I-V curve (up to 4096 points) under the shade of the solar panel can be simulated; has 100I-V curves for automatic programming control; the Static & Dynamic MPPT efficiency (energy integral measurement) can be tested; the I-V curve of the actual weather (day/month/year) of each region can be simulated; recording data in Softpanel; support the control interface of Ethernet/USB/RS232/RS 485/GPIB/APG; the instantaneous maximum power tracking state is displayed in Softpanel; the Softpanel is provided with a graphical operation software; the multi-channel MPPT test of 10 solar cell power sources can be supported and controlled; the system has EN50530, Sandia, CGC/GF004, CGC/GF035 and NB/T32004 dynamic MPPT test programs and report generation functions. The simulation system is used for receiving the instruction of the real-time simulation controller 1, simulating voltage and current characteristic curves of different photovoltaics, and transmitting photovoltaic data to the real-time simulation controller 1 in real time.

In this embodiment, the power specification of the shore power simulator 4 is 61815, 15 kVA; the voltage specification is 0-350V; frequency specification: 30Hz-100 Hz/DC; a high power density design with a maximum of 15kVA at a height of 3U; the full touch panel is matched with an intuitive UI design; the single-phase and three-phase output modes can be selected; the energy recovery function can provide 100 percent of rated current recovery capacity; the method conforms to the test application of related products of EV, PV inverter and Smart Grid; the output variation rate of voltage and frequency can be set; output limits of voltage and current can be set; the voltage waveform can be set to be 0-360 degrees on-off angle; outputting a synchronous TTL signal with variable voltage; performing test power supply disturbance (PLD) simulation in a LIST, STEP and PULSE mode; synthesizing distortion waveforms of harmonic waves and inter-harmonic waves; the parameter measurement function comprises harmonic components of each current order; global universal input voltage specifications; standard remote interface USB, LAN; selecting and matching a remote interface GPIB and a CAN; greater output power can be provided through the parallel mode; ethernet TCP/IP communication. The shore power supply system is used for receiving the instruction of the real-time simulation controller 1, simulating the shore power voltage characteristics under different working conditions, and transmitting shore network data to the real-time simulation controller 1 in real time.

In this embodiment, the fan simulator 14 selects a PMSG series of the commercial flying technology, which includes an ABB frequency converter ACS880-01-05a6-3, a DTC control, a rated 2.2kW, a three-phase squirrel-cage asynchronous motor 1LE0001-0EA42-1, 2.2kW, 2890rpm, a permanent magnet synchronous motor WA130ST-M10015H (1.5 kW, 1500rpm, 2500P/R incremental encoder), a channel steel base, a mating coupling and a bracket.

The working principle is as follows:

when the marine wind power simulation system runs, a user sets experimental working conditions on measurement and control software of a PC (personal computer) 2 through instructions, a real-time simulation controller 1 transmits the instructions to a battery simulator 7 through a CAN (controller area network) to enable the battery simulator to run in an expected voltage/current/battery mode, transmits the instructions to a photovoltaic simulator 5 through an RS485 to enable the photovoltaic simulator to simulate marine illumination and the power generation characteristics of a photovoltaic panel, transmits the instructions to an alternating current electronic load 6 through an RS232 to enable the alternating current electronic load to simulate the alternating current load characteristics of a ship, transmits the instructions to a direct current electronic load 3 through an Ethernet to enable the direct current electronic load to simulate the direct current load characteristics of the ship, transmits the instructions to a shore power simulator 4 through the Ethernet to simulate the shore power voltage characteristics of the ship, and transmits simulated voltage signals to a fan simulator through a signal adapter plate 17 to enable the fan simulator to run in a set torque or rotating. The real-time simulation controller 1 acquires analog voltage signals on the DCDC converter 8, the first DCAC converter 10, the second DCAC converter 15, the first filter 11, the second filter 16 and the grid-connected switch 13 through the signal transfer board 17, so that a user can operate different models on measurement and control software to perform PWM-based closed-loop control on the DCDC converter 8, the first DCAC converter 10 and the second DCAC converter 15, a ship system can perform shore power supply when the ship system is in shore, the power supply can provide alternating-current voltage for the alternating-current electronic load 6, the fan unit can selectively operate or stop, the voltage of the direct-current bus 9 can be provided by the first DCAC converter 10, the second DCAC converter 15 and the filter between the alternating-current bus and the direct-current bus, at the moment, the battery can be simulated to enter a constant-current charging state, and the SOC on the ship can be in a charging state after the battery leaves the shore; after the voltage of the battery direct current bus 9 is formed, the direct current load on the bus can continue to normally obtain electric energy, and the photovoltaic can be selectively operated or stopped. The control parameters and the operation settings of the battery simulator can be modified in real time in the experimental process, and when the bottom layer needs to be modified, the control parameters and the operation settings can be recompiled only after the graphical interface is modified, so that the research and the test can be continued; thereby meeting the requirements of real-time, rapidness and convenience of scientific research.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a little electric wire netting scientific research test platform is mixed to open source boats and ships bank electricity which characterized in that: the system comprises a real-time simulation controller (1) and a wind turbine simulator (14), wherein the real-time simulation controller (1) is respectively in signal connection with a PC (2) and a shore power simulator (4) through Ethernet, the real-time simulation controller (1) is in signal connection with a photovoltaic simulator (5) through a communication interface, and the real-time simulation controller (1) is connected with a battery simulator (7) through a CAN;

the photovoltaic simulator (5) and the battery simulator (7) are respectively connected to a direct current bus (9) through a DCDC converter (8), the direct current bus (9) is also connected with a first DCAC converter (10) in a hanging mode, the first DCAC converter (10) is connected with an alternating current bus (12) through a first filter (11), and the alternating current bus (12) is connected with a shore power simulator (4) through a grid-connected switch (13);

the fan simulator is characterized in that the fan simulator (14) is connected with a second filter (16) through a second DCAC converter (15) connected with two backrests, the second filter (16) is connected with an alternating current bus (12), the DCDC converter (8), a first DCAC converter (10), a second DCAC converter (15), a first filter (11) and the second filter (16) are all connected into the real-time simulation controller (1) through a signal adapter plate (17), an analog quantity voltage signal and an enabling signal of the fan simulator (14) are sent out by the real-time simulation controller (1) through the signal adapter plate (17), and an output signal of the grid-connected switch (13) is connected into the real-time simulation controller (1) through the signal adapter plate (17).

2. The open-source ship shore power hybrid micro-grid scientific research test platform as claimed in claim 1, wherein: the direct current electronic load (3) is hung on the direct current bus (9); the direct current electronic load (3) is in signal connection with the real-time simulation controller (1) through the Ethernet.

3. The open-source ship shore power hybrid micro-grid scientific research test platform as claimed in claim 1, wherein: the device is characterized by further comprising an alternating current electronic load (6), wherein the alternating current electronic load (6) is hung on an alternating current bus (12), and the alternating current electronic load (6) is in signal connection with the real-time simulation controller (1) through a communication interface.