CN111310397A - Mirror image detection distributed inversion real-time simulation system - Google Patents
Mirror image detection distributed inversion real-time simulation system Download PDFInfo
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Abstract
The invention relates to a distributed inversion real-time simulation system for mirror image detection, which comprises: the system comprises a real distributed inversion system, a mirror image distributed inversion simulation system and a signal interface unit; the real distributed inversion system and the mirror image distributed inversion simulation system are in communication connection through a signal interface unit; the invention adopts a mirror image detection method, transmits data of a real power device with unlimited capacity to a corresponding device of a simulation system, and performs real operation data fitting; the power grid system of the simulation system can simulate common faults and abnormal states of a real power grid according to requirements, and simultaneously control the distributed inversion system of the simulation system and the distributed inversion system with a real physical environment through the real controller. The method has the advantages of data mirroring, data replication and synchronous operation of the physical equipment and the simulation system, and has very important application value and good development prospect.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of inversion control of distributed power supplies, and particularly relates to a distributed inversion real-time simulation system for image detection.
[ background of the invention ]
The distributed renewable energy grid-connected unit has the characteristics of small installed capacity, large quantity and free and flexible control, but as distributed power generation is connected to a smart grid and enters a new development stage in China, a distributed inversion system brings new challenges to the operation and control of the grid, how to ensure the distributed power generation to be connected to the grid in an orderly, flexible and friendly manner and realize friendly coordination and efficient consumption of distributed energy and the grid becomes a significant scientific proposition in the field of energy and power grids. At present, in the related research of accessing a distributed energy into a power grid, a simulation technology is a necessary means for researching and verifying operation control and fault protection strategies, and in view of the characteristics of small capacity, large quantity and flexible control of distributed power sources, the existing simulation research has larger deviation with the actual experimental research, so that the scientificity and accuracy of the existing simulation system are better and tightly combined with the effectiveness of a control method and strategies. Therefore, a new mirror image detection distributed inversion real-time simulation system is needed, the data of a real power device with unlimited capacity is transmitted to a corresponding device of the simulation system by adopting a mirror image detection method, and real operation data fitting is carried out; the power grid system of the simulation system can simulate common faults and abnormal states of a real power grid according to requirements, and simultaneously control the distributed inversion system of the simulation system and the distributed inversion system with a real physical environment through the real controller. The method has the advantages of data mirroring, data replication and synchronous operation of the physical equipment and the simulation system, and has very important application value and good development prospect.
[ summary of the invention ]
In order to solve the above problems in the prior art, the present invention provides a distributed inversion real-time simulation system for image detection, which includes: the system comprises a real distributed inversion system, a mirror image distributed inversion simulation system and a signal interface unit; the real distributed inversion system and the mirror image distributed inversion simulation system are in communication connection through a signal interface unit;
the system also comprises a measured control protection device which is used as a controller and is arranged between the real distributed inversion system and the signal interface unit; a set of controller is shared between the real distributed inversion system and the mirror image distributed inversion simulation system; the monitored control protection device acquires a control instruction sent by the mirror image distributed inversion simulation system and controls the real distributed inversion system; and the system is also used for acquiring data of a real distributed inversion system and synchronously setting the mirror image distributed inversion simulation system.
Further, the communication connection is a communication through a digital I/O or an analog I/O.
Further, the control instruction is an operation mode switching instruction and a fault injection instruction.
Furthermore, the measured control protection device is also used for sending a measurement instruction to the real distributed inversion system and the mirror image distributed inversion simulation system so as to acquire the operation state data of the real distributed inversion system and the mirror image distributed inversion simulation system, and the synchronous operation between the real distributed inversion system and the mirror image distributed inversion simulation system is carried out based on the operation state data.
Further, the synchronization setting specifically includes: and voltage synchronization and current synchronization between the real distributed inversion system and the mirror image distributed inversion simulation system.
Further, the voltage synchronization between the real distributed inversion system and the mirror distributed inversion simulation system specifically includes: the measured control protection device acquires operation data of a real distributed inversion system and a mirror image distributed inversion simulation system based on a measurement instruction, and checks the operation data; if the absolute value of the difference value of the operating data of the two same points is larger than the rated voltage and the rated current of the real distributed inversion system and exceeds a first percentage threshold value, replacing the operating data of the same points in the mirror image distributed inversion simulation system by using the corresponding operating data of the same points in the real distributed inversion system, so that the operating data in the mirror image distributed inversion simulation system is closer to the data of the real distributed inversion system; and the mirror image distributed inversion simulation system performs real-time check according to the operation data fed back by the real distributed inversion system, so that the operation data of equipment in the simulation system is more similar to the real distributed inversion system.
Further, the first percentage threshold is 3%.
Furthermore, the mirror image distributed inversion simulation system can operate by itself or synchronously operate with a real distributed inversion system.
Further, when the distributed inversion simulation system runs by itself, the mirror image distributed inversion simulation system executes a first preset time period based on current data, and after the first preset time period is finished, the running data of the mirror image distributed inversion simulation system and the running data of a real distributed inversion simulation system are checked to align a simulation model of the mirror image distributed inversion simulation system.
Further, the first predetermined time period is greater than the time interval of the real-time check.
The beneficial effects of the invention include: adopting a mirror image detection method to transmit data of a real power device with unlimited capacity to a corresponding device of the simulation system for real operation data fitting; the power grid system of the simulation system can simulate common faults and abnormal states of a real power grid according to requirements, and simultaneously control the distributed inversion system of the simulation system and the distributed inversion system with a real physical environment through the real controller. The method has the advantages of data mirroring, data replication and synchronous operation of the physical equipment and the simulation system, and has very important application value and good development prospect.
[ description of the drawings ]
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, and are not to be considered limiting of the invention, in which:
fig. 1 is a schematic structural diagram of a distributed inversion real-time simulation system for image detection according to the present invention.
Fig. 2 is a schematic structural diagram of a distributed inversion real-time simulation system for image detection according to an embodiment of the present invention.
[ detailed description ] embodiments
The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
As shown in fig. 1, a distributed inversion real-time simulation system for image detection according to the present invention is described in detail, and the system includes: the system comprises a real distributed inversion system, a mirror image distributed inversion simulation system and a signal interface unit; the real distributed inversion system and the mirror image distributed inversion simulation system are in communication connection through a signal interface unit;
preferably: the communication connection is communication through a digital I/O or analog I/O mode;
the system also comprises a measured control protection device which is used as a controller and is arranged between the real distributed inversion system and the signal interface unit; a set of controller is shared between the real distributed inversion system and the mirror image distributed inversion simulation system; the monitored control protection device acquires a control instruction sent by the mirror image distributed inversion simulation system and controls the real distributed inversion system; the system is also used for acquiring data of a real distributed inversion system for synchronous setting of the mirror image distributed inversion simulation system;
preferably: the control instruction is an operation mode switching instruction and a fault injection instruction;
preferably: the measured control protection device is also used for sending a measurement instruction to the real distributed inversion system and the mirror image distributed inversion simulation system so as to acquire the operation state data of the real distributed inversion system and the mirror image distributed inversion simulation system and carry out synchronous operation between the real distributed inversion system and the mirror image distributed inversion simulation system based on the operation state data;
the synchronous setting specifically comprises: voltage synchronization and current synchronization between the real distributed inversion system and the mirror image distributed inversion simulation system;
the voltage synchronization between the real distributed inversion system and the mirror image distributed inversion simulation system is specifically as follows: the measured control protection device acquires operation data of a real distributed inversion system and a mirror image distributed inversion simulation system based on a measurement instruction, and checks the operation data; if the absolute value of the difference value of the operating data of the two same points is larger than the rated voltage and the rated current of the real distributed inversion system and exceeds a first percentage threshold value, replacing the operating data of the same points in the mirror image distributed inversion simulation system by using the corresponding operating data of the same points in the real distributed inversion system, so that the operating data in the mirror image distributed inversion simulation system is closer to the data of the real distributed inversion system; the mirror image distributed inversion simulation system carries out real-time check according to the operation data fed back by the real distributed inversion system, so that the operation data of equipment in the simulation system is more similar to the real distributed inversion system;
preferably: the first percentage threshold is 3%;
preferably: the mirror image distributed inversion simulation system can operate by itself and can also operate synchronously with a real distributed inversion system; when the mirror image distributed inversion simulation system runs by itself, the mirror image distributed inversion simulation system executes a first preset time period based on current data, and after the first preset time period is finished, the running data of the mirror image distributed inversion simulation system and the running data of a real distributed inversion system are checked so as to align a simulation model of the mirror image distributed inversion simulation system;
preferably: the first preset time period is greater than the time interval of the real-time checking; through long-time simulation operation, the substantial difference between a simulation system and a real system is easy to find, and the verification of a simulation system model is convenient, so that the stability of the model is ensured in a long-term stage;
preferably: the mirror image distributed inversion simulation system can inject faults (short circuit, open phase and grounding) so as to verify the control behavior of the monitored control protection device in the abnormal state of the power grid system, further obtain the real operation data of the real physical system, further fit the operation data of the mirror image distributed inversion simulation system, finally enable the simulation environment system to be closer to the real physical environment system, and enhance the effectiveness and accuracy of real-time simulation data;
the monitored control protection device is used for acquiring voltage, current and switching signals of the real distributed inversion system and the mirror image distributed inversion simulation system and simultaneously controlling primary equipment in the real distributed inversion system and the mirror image distributed inversion simulation system based on the acquired data;
preferably: the primary equipment comprises a converter, an inverter, an isolating switch and the like;
preferably: the mirror image distributed inversion simulation system can actively initiate fault correction control; specifically, the method comprises the following steps: after the mirror image distributed inversion simulation system sets a fault injection signal, the measured control protection device carries out fault correction control on equipment in the real distributed inversion system and the mirror image distributed inversion simulation system at the same time after the measured control protection device reaches the fault injection signal;
preferably: operating data such as voltage, current and the like in the real distributed inversion simulation system are transmitted to the mirror image distributed inversion simulation system through digital I/O or analog I/O communication;
as shown in fig. 2, a distributed inversion real-time simulation system for image detection according to another embodiment of the present invention is described in detail, where the system includes: the distributed inversion real-time simulation system is in communication interconnection with the real physical system; wherein: the distributed inversion real-time simulation system comprises a monitoring upper computer unit, a signal interface unit and a real-time simulation unit;
the real physical system comprises a real controller and a distributed inversion system; the distributed inversion system realizes synchronous operation with a real physical system through the controller.
Preferably: the distributed inversion real-time simulation system is a set of mirror image simulation system corresponding to the real physical system; the configuration of the distributed inversion real-time simulation system is completely the same as that of a real physical system; wherein: the real physical system is a distributed photovoltaic/distributed energy storage grid-connected real system;
the monitoring upper computer unit consists of a high-performance computer; an operable human-computer interface module is arranged in the monitoring upper computer unit, and a user can complete the functions of operation mode switching, fault injection setting and experimental data management through the human-computer interface module; the monitoring upper computer unit is connected with the real-time simulation unit in an Ethernet mode;
the monitoring upper computer unit comprises an interface configuration unit, an experimental data management unit and a fault injection setting unit; the interface configuration unit is connected with the signal interface unit to directly acquire the data acquired and sent by the signal interface unit; the experimental data management unit is used for managing the data received by the signal interface unit; the fault injection setting is used for providing fault injection selection, carrying out fault injection based on user selection, sending the fault injection setting to the real-time simulation unit in a control instruction mode, switching an operation mode based on user selection and sending to the real-time simulation unit in an operation mode switching instruction mode;
preferably: a user completes user settings of operation mode switching and fault injection through a human-computer interface module, and sends a control instruction to a real-time simulation unit based on the user settings, and the real-time simulation unit performs operation mode switching and fault injection based on the control instruction;
preferably: the control instruction comprises an operation mode state bit, and when the operation mode state bit is set to be 0, the system of the real-time simulation unit is controlled by a simulation controller of the simulation unit; when the value is set to 1, the system of the real-time simulation unit is controlled by a real controller of the real physical unit;
preferably: the fault injection setting function completes the power grid fault enabling function of the real-time simulation unit, and before enabling of related faults, the power grid of the real-time simulation unit has no related faults;
preferably: the control instruction comprises a fault enabling state bit, and the fault enabling state bit is enabled by setting the fault enabling state bit to be 1 or other values which are not 0; the fault enabling state bit is 1 or more;
the fault types comprise single-phase through resistance ground fault, near-end two-phase short-circuit fault, far-end two-phase short-circuit fault, three-phase system voltage unbalance and the like;
the signal interface unit is communicated with the distributed inversion real-time simulation system and the real physical system in a serial/parallel communication mode through an optical fiber/communication cable to complete input, output and acquisition of operation data of the two systems and realize data interaction of the distributed inversion real-time simulation system and the real physical system;
preferably: the transmission of the control pulse synchronization signal is carried out through the real controller and the simulation controller, so that the distributed inversion real-time simulation system and the real physical system run synchronously;
the real-time simulation unit is a lower computer system and is realized by a real-time simulation machine (such as RTDS/RTlab/Typhoon and the like) to provide a real-time simulation running environment; by building a simulation system with the same configuration as the real physical system, the real-time simulation system can realize mirroring with the real physical system;
the real-time simulation system comprises a simulation controller and a hardware interface driver; the simulation controller simulates a real physical system in the same configuration and simulation operation mode; the hardware interface driver is used for receiving data transmitted from the signal interface unit and transmitting the data to the signal interface unit;
the signal interface unit comprises a digital IO interface, an analog IO interface and a communication interface; the digital IO interface, the analog IO interface and the communication interface are in driving connection with the hardware interface; the digital IO interface, the analog IO interface and the communication interface in the signal interface unit are respectively connected with the digital IO interface, the analog IO interface and the communication interface in the real physical system to carry out data communication; all data from the real physical system pass through the signal access unit and then enter the real-time simulation unit; a hardware security defense mechanism is arranged in the real-time signal interface unit, and can perform security defense on data from a real physical system;
preferably: when the running data of the real physical system is abnormal, the real controller sends the abnormal information to a monitoring upper computer unit for abnormal reporting;
in the embodiments provided in the present invention, it should be understood that the disclosed method and terminal can be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and other divisions may be realized in practice.
In addition, the technical solutions in the above several embodiments can be combined and replaced with each other without contradiction.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional module.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of modules or means recited in the system claims may also be implemented by one module or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A distributed inversion real-time simulation system for image detection, the system comprising: the system comprises a real distributed inversion system, a mirror image distributed inversion simulation system and a signal interface unit; the real distributed inversion system and the mirror image distributed inversion simulation system are in communication connection through a signal interface unit;
the system also comprises a measured control protection device which is used as a controller and is arranged between the real distributed inversion system and the signal interface unit; a set of controller is shared between the real distributed inversion system and the mirror image distributed inversion simulation system; the monitored control protection device acquires a control instruction sent by the mirror image distributed inversion simulation system and controls the real distributed inversion system; and the system is also used for acquiring data of a real distributed inversion system and synchronously setting the mirror image distributed inversion simulation system.
2. The image sensing distributed inversion real-time simulation system of claim 1, wherein the communication connection is via digital I/O or analog I/O.
3. The image detection distributed inversion real-time simulation system according to claim 2, wherein the control command is a run mode switch command and a fault injection command.
4. The image detection distributed inversion real-time simulation system according to claim 3, wherein the monitored control protection device is further configured to send a measurement instruction to the real distributed inversion system and the image distributed inversion simulation system to collect operation state data of the real distributed inversion system and the image distributed inversion simulation system, and perform synchronous operation between the real distributed inversion system and the image distributed inversion simulation system based on the operation state data.
5. The image detection distributed inversion real-time simulation system according to claim 4, wherein the synchronization setting specifically is: and voltage synchronization and current synchronization between the real distributed inversion system and the mirror image distributed inversion simulation system.
6. The image detection distributed inversion real-time simulation system according to claim 5, wherein the voltage synchronization between the real distributed inversion system and the image distributed inversion simulation system is specifically as follows: the measured control protection device acquires operation data of a real distributed inversion system and a mirror image distributed inversion simulation system based on a measurement instruction, and checks the operation data; if the absolute value of the difference value of the operating data of the two same points is larger than the rated voltage and the rated current of the real distributed inversion system and exceeds a first percentage threshold value, replacing the operating data of the same points in the mirror image distributed inversion simulation system by using the corresponding operating data of the same points in the real distributed inversion system, so that the operating data in the mirror image distributed inversion simulation system is closer to the data of the real distributed inversion system; and the mirror image distributed inversion simulation system performs real-time check according to the operation data fed back by the real distributed inversion system, so that the operation data of equipment in the simulation system is more similar to the real distributed inversion system.
7. The image detection distributed inversion real-time simulation system of claim 6, wherein the first percentage threshold is 3%.
8. The image sensing distributed inversion real-time simulation system according to claim 7, wherein the image sensing distributed inversion simulation system can operate by itself or in synchronization with a real distributed inversion system.
9. The mirror detection distributed inverter real-time simulation system according to claim 8, wherein when operating by itself, the mirror distributed inverter simulation system performs a first predetermined time period based on current data, and after the first predetermined time period is over, checks operation data of the mirror distributed inverter simulation system and operation data of a real distributed inverter simulation system to align a simulation model of the mirror distributed inverter simulation system.
10. The image detection distributed inversion real-time simulation system of claim 9, wherein the first predetermined time period is greater than a time interval of the real-time verification.
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