CN217157090U - Photovoltaic inverter controller simulation case suitable for hardware-in-the-loop simulation - Google Patents
Photovoltaic inverter controller simulation case suitable for hardware-in-the-loop simulation Download PDFInfo
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- CN217157090U CN217157090U CN202122637235.XU CN202122637235U CN217157090U CN 217157090 U CN217157090 U CN 217157090U CN 202122637235 U CN202122637235 U CN 202122637235U CN 217157090 U CN217157090 U CN 217157090U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides a photovoltaic inverter controller simulation case suitable for hardware-in-the-loop simulation, which comprises a photovoltaic inverter controller (2) and a signal interaction board card (3); the photovoltaic inverter controller (2) is connected with the signal interaction board card (3) through a signal wire harness; the signal interaction board card (3) is installed on the inner wall of the simulation case of the photovoltaic inverter controller and connected with the hardware-in-loop real-time simulator. Various signals are classified and organized in the external interface of the case, so that the wiring efficiency can be greatly improved and the wiring time can be reduced when various real-time simulators are accessed. Because the sequence of various signals is arranged in the external interface in sequence, the arrangement mode can improve the debugging efficiency.
Description
Technical Field
The utility model belongs to the technical field of the photovoltaic inverter simulation test, concretely relates to photovoltaic inverter controller emulation machine case suitable for hardware is in ring emulation.
Background
With the rapid growth of photovoltaic installation machines, the power electronic characteristics of power systems become more and more obvious. A typical power electronic system is generally composed of a power loop, a control loop and a controlled object 3 part which are formed by power electronic devices, so that a complex nonlinear digital-analog hybrid system is formed, and great difficulty is brought to design and parameter setting. In the prior art, the difference exists between a controller and an actual controller in the off-line digital simulation, factors such as sampling errors of the controller, communication delay, program execution delay and the like cannot be correctly reflected, and the reliability of the simulation is influenced. In this case, hardware-in-the-loop real-time simulation based on controller access is gaining increasing application.
At present, real-time simulators are various, and the interface forms of various power electronic system controllers are also different. When various controllers are connected into the real-time simulator, the types, the number, the sequence and the forms of the interfaces are all different, so that the physical IO wiring and model debugging of each real-time simulation test are long in time consumption.
SUMMERY OF THE UTILITY MODEL
For overcoming the not enough of above-mentioned prior art, the utility model provides a photovoltaic inverter controller emulation machine case suitable for hardware is in ring emulation, include: the photovoltaic inverter controller 2 and the signal interaction board card 3;
the photovoltaic inverter controller 2 is connected with the signal interaction board card 3 through a signal wire harness;
the signal interaction board card 3 is installed on the inner wall of the simulation case of the photovoltaic inverter controller and is connected with the hardware-in-loop real-time simulator.
Preferably, the signal interaction board 3 includes: the analog input board card, the digital input board card and the digital output board card;
one end of each of the analog input board card, the digital input board card and the digital output board card is connected with the photovoltaic inverter controller 2, and the other end of each of the analog input board card, the digital input board card and the digital output board card is connected with the hardware-in-loop real-time simulator;
the analog input board card adopts a DB-AO type board card;
the digital quantity input board card adopts a DB-DI type board card;
the digital quantity output board card adopts a DV-DO type board card.
Preferably, the analog input signal includes: sampling signals of a hardware-in-loop real-time simulator;
the input digital quantity input signal comprises: switch state feedback signals and various level feedback signals;
the digital quantity output signal comprises: a power device drive signal, a breaker signal, a contactor close signal, and an open signal.
Preferably, one end of the analog input board card, one end of the digital input board card and one end of the digital output board card are respectively connected to the photovoltaic inverter controller 2 through signal wiring harnesses, and the other end of the analog input board card, the digital input board card and the digital output board card are respectively connected with the hardware-in-loop real-time simulator.
Preferably, the signal interaction board 3 adopts a DB37 connection terminal.
Preferably, the DB37 terminal receives a predetermined number of signals.
Preferably, the connection between the photovoltaic inverter controller 2 and the hardware-in-loop real-time simulator is connected through a DB37 connection line led out from a DB37 connection terminal.
Preferably, the analog input board card, the digital input board card and the digital output board card respectively adopt DB37 wiring terminals of corresponding types.
Preferably, the photovoltaic inverter controller 2 is formed by one or more circuit boards.
Preferably, the photovoltaic inverter where the photovoltaic inverter controller 2 is located is a centralized or string-type photovoltaic inverter.
Compared with the closest prior art, the utility model discloses the beneficial effect who has as follows:
the utility model provides a photovoltaic inverter controller simulation case suitable for hardware-in-the-loop simulation, which comprises a photovoltaic inverter controller 2 and a signal interaction board card 3; the photovoltaic inverter controller 2 is connected with the signal interaction board card 3 through a signal wire harness; the signal interaction board card 3 is installed on the inner wall of the simulation case of the photovoltaic inverter controller and is connected with the hardware-in-loop real-time simulator; various signals are classified and organized in the external interface of the case, wiring efficiency can be greatly improved and wiring time can be reduced when various real-time simulators are accessed, and debugging efficiency can be improved due to the arrangement mode of the signals in the external interface.
Drawings
Fig. 1 is a schematic diagram of a simulation chassis frame of a photovoltaic inverter controller suitable for hardware-in-the-loop simulation provided by the present invention;
fig. 2 is a schematic diagram illustrating a connection between a simulation chassis of a photovoltaic inverter controller and a real-time simulator provided by the present invention;
fig. 3 is a front view of the simulation cabinet of the photovoltaic inverter controller provided by the present invention;
the reference numbers illustrate:
1-a photovoltaic inverter controller simulation chassis; 2-a photovoltaic inverter controller; and 3, a signal interaction board card.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
Example 1:
the utility model provides a photovoltaic inverter controller emulation machine case suitable for hardware is in ring emulation, as shown in FIG. 1, reference numeral 1 is photovoltaic inverter controller emulation machine case, and reference numeral 2 is photovoltaic inverter controller, and reference numeral 3 is the mutual integrated circuit board of signal.
The photovoltaic inverter controller 2 is connected with the signal interaction board card 3 through a signal wire harness;
the signal interaction board card 3 is installed on the inner wall of the simulation case of the photovoltaic inverter controller and is connected with the hardware-in-the-loop real-time simulator.
A more detailed example of a simulation chassis of a photovoltaic inverter controller suitable for hardware-in-the-loop simulation is shown in fig. 2, where the signal interaction board 3 includes: the analog input board card, the digital input board card and the digital output board card;
one end of each of the analog input board card, the digital input board card and the digital output board card is connected with the photovoltaic inverter controller 2, and the other end of each of the analog input board card, the digital input board card and the digital output board card is connected with the hardware-in-loop real-time simulator;
the analog input board card adopts a DB-AO type board card;
the digital quantity input board card adopts a DB-DI type board card;
the digital quantity output board card adopts a DV-DO type board card.
The signal interaction board card adopts a DB37 wiring terminal and is installed on the wall of the simulation case, and the specific interface form is shown in figure 3.
The connection between the photovoltaic inverter controller 2 and the hardware-in-loop real-time simulator is connected through a DB37 connecting line led out from a DB37 connecting terminal, wherein the controller in the photovoltaic inverter controller 2 is composed of one or more circuit boards;
the photovoltaic inverter in the photovoltaic inverter controller 2 can be a centralized or string photovoltaic inverter;
alternative examples are: the photovoltaic inverter in which the photovoltaic inverter controller 2 is located is a KS500K type photovoltaic inverter.
The specific use method of the photovoltaic inverter controller simulation case suitable for hardware-in-the-loop simulation is as follows:
1-1, all signals required by real-time simulation are connected from a controller (part 2 in figure 2) to form a total signal wire harness, wherein the controller is composed of one or more circuit boards. The signals required by the real-time simulation comprise the following signals: sampling signals, power device driving signals, circuit breaker/contactor on/off signals, switch state feedback signals, various level feedback signals and the like.
1-2, classifying the signal wires in the signal wire bundle into three categories in total, wherein the three categories are respectively as follows: analog Input (AI), Digital Input (DI), and Digital Output (DO). The direction of input and output is referenced to the simulation chassis, for example, a signal is provided to the real-time simulator from the simulation chassis, and the signal is an output signal. The analog input signal comprises a sampling signal and the like; the digital quantity input signal comprises a switch state feedback signal, various level feedback signals and the like; the digital output signals include power device drive signals, breaker/contactor close/open signals, etc.
And 1-3, respectively connecting the wire harnesses obtained in the step 2 to a signal interaction board card according to types, wherein the signal interaction board card adopts a DB37 wiring terminal. The signal interaction board cards are divided into three types: analog input board card, digital output board card.
1-4 the number of access signals per DB37 terminal is limited to 16. When wiring, a plurality of signals are sequentially accessed from 1 pin (namely, the upper left of the terminal in fig. 3) of the DB37 wiring terminal to 16 pins. The reference ground signal corresponding to each signal is sequentially switched in from 20 pins (namely, the upper right of the terminal in fig. 3) of the DB37 wiring terminal to 35 pins.
1-5, if the number of the signals of the same type exceeds 16, the excessive signals are connected into another DB37 terminal from the 17 th signal, and so on, the DB37 terminals connected with the signals of the same type have n (n is more than or equal to 1). After the wiring is finished, the external interface of the simulation case is in the form shown in fig. 3.
When the 1-6 simulation chassis is connected with the real-time simulator, the DB37 connecting wire can be directly led out from the signal interaction board card.
Example 2:
taking a certain model of 500kW photovoltaic inverter as an example, a controller of the photovoltaic inverter is composed of a circuit board as shown by the reference number 1 in fig. 2, and signals required by the hardware-in-loop real-time simulator accessed by the controller are shown in table 1. The analog signals share a reference ground AGND, and the digital signals share a reference ground DGND.
| Number of signals | Description of the Signal | Signal name | Type of |
|
| 1 | Line voltage of power | Uab | AI | |
| 2 | Line voltage of power grid | Ubc | AI | |
| 3 | Line voltage of power grid | Uca | AI | |
| 4 | Inductance A phase current | Ia | AI | |
| 5 | Inductance B phase current | Ib | AI | |
| 6 | Inductance C phase current | Ic | AI | |
| 7 | Direct voltage | Udc | AI | |
| 8 | Direct Current (DC) | Idc | AI | |
| 9 | A-phase IGBT upper bridge arm driving signal | PWM1 | DO | |
| 10 | A-phase IGBT lower bridge arm driving signal | PWM2 | DO | |
| 11 | B-phase IGBT upper bridge arm driving signal | PWM3 | DO | |
| 12 | B-phase IGBT lower bridge arm driving signal | PWM4 | DO | |
| 13 | C-phase IGBT upper bridge arm driving signal | PWM5 | DO | |
| 14 | C-phase IGBT lower bridge arm driving signal | PWM6 | DO | |
| 15 | Main contactor closing signal | GCB | DO | |
| 16 | Main contactor closing feedback | GCBFeed | DI |
TABLE 1 certain model photovoltaic inverter hardware-in-loop simulation required signal
2-1 all signals in the table 1 are led out by using a lead to form a signal wire harness.
2-2 the table in which the signals are classified by type, AI, DO, DI signals, as shown in column 4 of table 1.
2-3 classifying and sorting the signal wire harness formed by various signals into a wire harness 1, a wire harness 2 and a wire harness 3 according to types. Wherein, the harness 1 is AI signal (i.e. signals 1-8 in the table), the harness 2 is DI signal (i.e. signal 16 in the table), and the harness 3-bit DO signal (i.e. signals 9-15 in the table).
2-4 sequentially connecting 8 AI signals in the wire harness 1 to 1-8 pins of a DB37 connection terminal (AI 1 in FIG. 3), and connecting an analog reference ground signal AGND to 20-27 pins of a DB37 connection terminal.
2-5 pins 1 DI signal in bundle 2 into DB37 terminal (DI 1 in FIG. 3) and 20 pins of DB37 terminal into which digital reference ground signal DGND is inserted.
2-6 sequentially connecting 7 DO signals in the wiring harness 3 to pins 1-7 of a DB37 connection terminal (DO 1 in FIG. 3), and connecting an analog reference ground signal DGND to pins 20-26 of a DB37 connection terminal.
2-7 after the wiring is finished, the interface presented to the outside of the simulation case is 3 DB37 wiring terminals, and when the real-time simulator is connected, only the corresponding DB37 connecting wire is needed to lead out signals from the 3 DB37 wiring terminals.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present application, they can still make various changes, modifications or equivalent substitutions for the specific embodiments of the present invention, but all such changes, modifications or equivalent substitutions are within the protection scope of the pending claims of the present invention.
Claims (10)
1. A photovoltaic inverter controller simulation case suitable for hardware-in-the-loop simulation is characterized by comprising a photovoltaic inverter controller (2) and a signal interaction board card (3);
the photovoltaic inverter controller (2) is connected with the signal interaction board card (3) through a signal wire harness;
the signal interaction board card (3) is installed on the inner wall of the simulation case of the photovoltaic inverter controller and connected with the hardware-in-loop real-time simulator.
2. The pv inverter controller simulation chassis of claim 1, wherein the signal interaction board (3) comprises: the analog input board card, the digital input board card and the digital output board card;
one end of each of the analog input board card, the digital input board card and the digital output board card is connected with the photovoltaic inverter controller (2), and the other end of each of the analog input board card, the digital input board card and the digital output board card is connected with the hardware-in-loop real-time simulator;
the analog input board card adopts a DB-AO type board card and is used for inputting an analog input signal;
the digital input board card adopts a DB-DI type board card and is used for inputting a digital input signal;
the digital output board card adopts a DV-DO type board card and is used for outputting a digital output signal.
3. The pv inverter controller simulation chassis of claim 2, wherein the analog input signal comprises: sampling signals of a hardware-in-loop real-time simulator;
the input digital quantity input signal comprises: switch state feedback signals and various level feedback signals;
the digital quantity output signal comprises: a power device drive signal, a breaker signal, a contactor close signal, and an open signal.
4. The pv inverter controller simulation chassis according to claim 2, wherein one end of the analog input board, the digital input board and the digital output board are connected to the pv inverter controller (2) through signal harnesses, and the other end of the analog input board, the digital input board and the digital output board are connected to the hardware-in-loop real-time simulator.
5. The pv inverter controller simulation chassis of claim 2, wherein the signal interaction board (3) is a DB37 connection terminal.
6. The pv inverter controller simulation chassis of claim 5, wherein the DB37 terminals receive a preset number of signals.
7. The pv inverter controller simulation chassis of claim 6, wherein the pv inverter controller (2) and hardware-in-the-loop real time simulator connections are connected via DB37 connection lines leading from DB37 connection terminals.
8. The photovoltaic inverter controller simulation chassis according to claim 2, wherein the analog input board card, the digital input board card and the digital output board card respectively adopt corresponding types of DB37 connection terminals.
9. The pv inverter controller simulation chassis of claim 1, characterized in that the pv inverter controller (2) is constructed from one or more circuit boards.
10. The pv inverter controller simulation chassis of claim 2, wherein the pv inverter in which the pv inverter controller (2) is located is a centralized or string pv inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122637235.XU CN217157090U (en) | 2021-10-29 | 2021-10-29 | Photovoltaic inverter controller simulation case suitable for hardware-in-the-loop simulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122637235.XU CN217157090U (en) | 2021-10-29 | 2021-10-29 | Photovoltaic inverter controller simulation case suitable for hardware-in-the-loop simulation |
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| Publication Number | Publication Date |
|---|---|
| CN217157090U true CN217157090U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122637235.XU Active CN217157090U (en) | 2021-10-29 | 2021-10-29 | Photovoltaic inverter controller simulation case suitable for hardware-in-the-loop simulation |
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| Country | Link |
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| CN (1) | CN217157090U (en) |
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- 2021-10-29 CN CN202122637235.XU patent/CN217157090U/en active Active
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