CN112526334A - Method and device for detecting state of direct current power transmission and distribution isolating switch based on digital twin system - Google Patents
Method and device for detecting state of direct current power transmission and distribution isolating switch based on digital twin system Download PDFInfo
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
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Abstract
The invention discloses a state detection method and a device of a direct current power transmission and distribution isolating switch based on a digital twin system, wherein the digital twin system comprises the following steps: the system comprises a physical direct current power transmission and distribution isolating switch, an isolating switch virtual model, a service module and a twin database; the method comprises the following steps: acquiring the operation parameter information of the direct current power transmission and distribution isolating switch of the entity in real time; performing simulation calculation according to the operation parameter information by using the virtual model of the isolating switch to obtain simulation data; determining the running state of the direct current power transmission and distribution isolating switch according to the simulation data; and when the running state is a fault, regulating and controlling the direct current power transmission and distribution isolating switch of the entity to stop running by using the isolating switch virtual model. The invention can detect the running state of the DC power transmission and distribution isolating switch in the links of assembly, time adjustment and the like in real time, objectively and accurately, and can realize the automatic control and the real-time feedback of the state of the DC power transmission and distribution isolating switch.
Description
Technical Field
The invention relates to the technical field of isolating switch detection, in particular to a method and a device for detecting the state of a direct current power transmission and distribution isolating switch based on a digital twin system.
Background
In a direct current transmission and distribution system, a direct current disconnecting switch is used for switching a line under a no-load condition and for electrically isolating or communicating electrical equipment such as a bus, a breaker and the like to be overhauled with the line, so that the requirements on reliability and stability are higher and higher. For the existing direct current isolating switches, such as ZGW2-816/J8000-40 high-capacity extra-high voltage direct current isolating switches independently developed by Xikai Limited company, ZGW6-816/J6300-25 high-voltage direct current isolating switches developed by Henan Ping high electric corporation and the like, which are all used in high-capacity and high-voltage converter stations, ZGW4-50 direct current isolating switches developed by Shandong Taikai Limited company can be used in medium and low voltage systems, but better methods are still needed to solve the problems of jamming and rusting of a transmission part, insufficient contact pressure of a contact finger contact and the like of the direct current isolating switches.
The automatic detection is an equipment detection method which utilizes a computer and related instruments to realize intellectualization and automation of a detection process under the condition of least participation of manpower. The automatic detection comprises the contents of measurement, processing, performance measurement, fault diagnosis, decision output and the like. Because automatic detection can fully develop and utilize computer resources, and has the advantages of high measurement speed, strong output capacity, reliable work, convenient and flexible use, capability of realizing monitoring, diagnosis and management integration and the like, the automatic detection system has gained general attention of people. The automatic detection and control technology can automatically acquire information, and by using related knowledge and strategies, the technologies such as real-time dynamic modeling, online identification, artificial intelligence, expert system and the like are used for realizing detection, monitoring, self-diagnosis and self-repair of the detected object (process).
The state detection means of the direct current power transmission and distribution isolating switch are multiple, but the safety of the direct current isolating switch can be effectively improved by the automatic detection technology, the system has high reliability, and the comprehensive application of the sensing technology, the microelectronic technology, the automatic control technology, the computer technology, the signal analysis and processing technology, the data communication technology and the like has important significance on timely, objective and accurate detection of mechanical properties such as jamming, corrosion and pressure of the direct current isolating switch.
Disclosure of Invention
The invention provides a method and a device for detecting the state of a direct current power transmission and distribution isolating switch based on a digital twin system, which aim to solve the problem of how to determine the state of the isolating switch and improve the reliability of the isolating switch.
In order to solve the above problems, according to an aspect of the present invention, there is provided a method for detecting a state of a dc power transmission and distribution disconnecting switch based on a digital twin system, the digital twin system including: the system comprises a physical direct current power transmission and distribution isolating switch, an isolating switch virtual model, a service module and a twin database; the method comprises the following steps:
the method comprises the steps of acquiring running parameter information of a direct current power transmission and distribution isolating switch of an entity in real time, and sending the running parameter information to an isolating switch virtual model and a twin database based on an OPC-UA communication mode;
performing simulation calculation according to the operation parameter information by using the virtual model of the isolating switch to obtain simulation data;
determining the running state of the direct current power transmission and distribution isolating switch according to the simulation data; wherein the operating state comprises: normal and fault;
and when the running state is a fault, regulating and controlling the direct current power transmission and distribution isolating switch of the entity to stop running by using the isolating switch virtual model.
Preferably, the acquiring the operation parameter information of the dc power transmission and distribution isolating switch of the entity includes:
the method comprises the following steps of acquiring the torque of a main shaft of a transmission mechanism of the direct-current isolating switch, the input power of a motor, the rotation angle of the motor, the pressure of a contact finger contact of the motor, the current of the motor, the voltage of the motor and the operation time of the motor in real time by using different types of high-precision sensors;
and acquiring video information of the transmission mechanism by using the camera equipment.
Preferably, the strain gauge is used to measure the torque of the main shaft of the transmission mechanism.
Preferably, the performing simulation calculation according to the operation parameter information by using the virtual model of the disconnecting switch to obtain simulation data includes:
simulating by using MATLAB simulation software according to the operation parameter information by using the virtual model of the isolating switch to obtain simulation data, simultaneously transmitting all model parameters and the simulation data to the service module through a Socket interface based on a TCP/IP protocol, and writing the model parameters and the simulation data into the twin database through an ODBC interface; and establishing the virtual model of the isolating switch by adopting Soli dWorks software.
Preferably, wherein the method further comprises:
and determining a fault type according to the simulation data, and sending an alarm instruction and data related to the fault type to the service module so as to send alarm information to a control terminal through the service module.
According to another aspect of the present invention, there is provided a state detection apparatus for a dc power transmission and distribution disconnecting switch based on a digital twin system, the digital twin system comprising: the system comprises a physical direct current power transmission and distribution isolating switch, an isolating switch virtual model, a service module and a twin database; the device comprises:
the system comprises a data acquisition unit, a data analysis unit and a data analysis unit, wherein the data acquisition unit is used for acquiring the operation parameter information of a direct current power transmission and distribution isolating switch of an entity in real time and sending the operation parameter information to the isolating switch virtual model and a twin database based on an OPC-UA communication mode;
the simulation unit is used for carrying out simulation calculation according to the operation parameter information by utilizing the virtual model of the isolating switch to obtain simulation data;
the operation state determining unit is used for determining the operation state of the direct current power transmission and distribution isolating switch according to the simulation data; wherein the operating state comprises: normal and fault;
and the regulating and controlling unit is used for regulating and controlling the direct current power transmission and distribution isolating switch of the entity to stop running by utilizing the isolating switch virtual model when the running state is a fault.
Preferably, the acquiring unit acquires the operation parameter information of the physical dc power transmission and distribution disconnecting switch, and includes:
the method comprises the following steps of acquiring the torque of a main shaft of a transmission mechanism of the direct-current isolating switch, the input power of a motor, the rotation angle of the motor, the pressure of a contact finger contact of the motor, the current of the motor, the voltage of the motor and the operation time of the motor in real time by using different types of high-precision sensors;
and acquiring video information of the transmission mechanism by using the camera equipment.
Preferably, the strain gauge is used to measure the torque of the main shaft of the transmission mechanism.
Preferably, the simulation unit performs simulation calculation according to the operation parameter information by using the virtual model of the disconnecting switch to obtain simulation data, and includes:
simulating by using MATLAB simulation software according to the operation parameter information by using the virtual model of the isolating switch to obtain simulation data, simultaneously transmitting all model parameters and the simulation data to the service module through a Socket interface based on a TCP/IP protocol, and writing the model parameters and the simulation data into the twin database through an ODBC interface; and establishing the virtual model of the isolating switch by adopting SolidWorks software.
Preferably, wherein the apparatus further comprises:
and the alarm unit is used for determining the fault type according to the simulation data, sending an alarm instruction and data related to the fault type to the service module, and sending alarm information to the control terminal through the service module.
The invention provides a state detection method and a state detection device of a direct current power transmission and distribution isolating switch based on a digital twin system, which have the following beneficial effects: (1) easy operation, security height: the direct current power transmission and distribution isolating switch is electric, automatic control of equipment is realized, operation is simple, and safety is high; (2) short detection time and high sensitivity: analyzing and judging data information acquired by the sensing equipment in real time through a twin model, and mapping the activity of the isolating switch; (3) the reliability is high: corresponding faults are reflected through different collected information in the installation and debugging processes of the isolating switch, and the isolating switch has high reliability; the invention can detect the running state of the DC power transmission and distribution isolating switch in the links of assembly, time adjustment and the like in real time, objectively and accurately, and can realize the automatic control and the real-time feedback of the state of the DC power transmission and distribution isolating switch.
Drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
fig. 1 is a flow chart of a method 100 for detecting a state of a dc power transmission and distribution disconnector based on a digital twinning system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a construction of a digital twinning system according to an embodiment of the present invention;
fig. 3 illustrates a mounting position and a mounting manner of a resistance strain gauge of a transmission shaft of a dc power transmission and distribution isolating switch according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a digital twinning system for data acquisition according to an embodiment of the present invention;
fig. 5 is a diagram of the operation mechanism of a digital twin system of a dc power transmission and distribution isolating switch according to an embodiment of the invention;
fig. 6 is a flow chart of a method for detecting the assembly debugging state of a digital twin system-based dc power transmission and distribution isolating switch according to an embodiment of the invention;
fig. 7 is an architecture diagram of a digital twinning system of a dc power transmission and distribution isolating switch according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of a state detection device 800 of a dc power transmission and distribution isolating switch based on a digital twin system according to an embodiment of the present invention.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Fig. 1 is a flowchart of a method 100 for detecting a state of a dc power transmission and distribution isolating switch based on a digital twin system according to an embodiment of the present invention. As shown in fig. 1, the method for detecting the state of the dc power transmission and distribution disconnecting switch based on the digital twin system according to the embodiment of the present invention can detect the operation state of the dc power transmission and distribution disconnecting switch in the steps of assembly, timing adjustment, and the like, objectively and accurately in real time, and can realize automatic control and real-time feedback of the state of the dc power transmission and distribution disconnecting switch. The method 100 for detecting the state of the dc power transmission and distribution isolating switch based on the digital twin system provided by the embodiment of the present invention starts from step 101, and the digital twin system comprises: the system comprises a physical direct current power transmission and distribution isolating switch, an isolating switch virtual model, a service module and a twin database. In step 101, the operation parameter information of the physical dc power transmission and distribution isolating switch is obtained in real time, and the operation parameter information is sent to the isolating switch virtual model and the twin database based on the OPC-UA communication mode.
Preferably, the acquiring the operation parameter information of the dc power transmission and distribution isolating switch of the entity includes:
the method comprises the following steps of acquiring the torque of a main shaft of a transmission mechanism of the direct-current isolating switch, the input power of a motor, the rotation angle of the motor, the pressure of a contact finger contact of the motor, the current of the motor, the voltage of the motor and the operation time of the motor in real time by using different types of high-precision sensors;
and acquiring video information of the transmission mechanism by using the camera equipment.
Preferably, the strain gauge is used to measure the torque of the main shaft of the transmission mechanism.
The invention provides a state detection method of a direct current power transmission and distribution isolating switch based on a digital twin system, aiming at the problems of real-time performance and reliability of state monitoring in the operation of the direct current power transmission and distribution isolating switch. The basic principle is as follows: based on an automatic device, the information of the isolating switch is acquired in real time through a high-precision sensor; uploading information acquired in the operation process of the isolating switch to a twin database, simulating in the constructed digital twin model, and analyzing whether the operation and state of each step meet the design requirements or not, thereby determining the operation state of the isolating switch.
In the present invention, the principle of constructing a digital twin system of a dc power transmission and distribution isolating switch is shown in fig. 2, and includes:
1) the physical entity (physical DC power transmission and distribution isolating switch) is composed of a DC power transmission and distribution isolating switch operating in an actual environment, various sensors and a camera. Various built-in and external sensors and cameras are used for acquiring the running states (such as torque, pressure, video and the like) and working conditions of the physical entities in real time.
2) The virtual model (virtual model of the isolating switch), namely the mirror image of the physical entity in the digital space, is synchronous with the physical entity in real time, and truly reflects the physical phenomena of the isolating switch, such as jamming, contact finger deformation, corrosion and the like. The method comprises a geometric model, a physical model, a behavior model and a rule model, wherein the 4 models are integrated and fused to establish a virtual model of an entity.
3) The service system (service module) provides intelligent application, precise management, reliable analysis and the like to users in the most intuitive interaction mode. The basis is that various data, models, algorithms and simulations required in the application process of the direct current power transmission and distribution isolating switch digital twin system are packaged in a service mode, and functional services for system function operation and realization are supported in the form of software components such as a tool kit and the like.
4) The twin database is used for storing relevant data, domain knowledge and fusion data of the physical entity, the virtual model and the service system; wherein, include: physical attribute data, virtual model data, service data, domain knowledge data, and fusion data.
5) And connecting to realize interconnection and intercommunication among all components of the system. Each group of connections can realize bidirectional connection through a protocol and a database interface.
In order to realize the comprehensive physical examination of the direct current power transmission and distribution isolating switch and provide scientific and accurate basis for state maintenance, the invention needs to measure and store the shaft torque of a transmission mechanism, the input power of a motor of an electric mechanism and the pressure of a rotating angle contact finger contact of the direct current isolating switch, can automatically transmit data to a digital twin model and a twin database and provide basis for analyzing abnormal operation; parameters such as motor current, voltage, operation time and the like of the direct current isolating switch electric mechanism need to be measured and stored, and a basis is provided for judging whether the electric mechanism is normal or not.
Aiming at the problems of jamming, corrosion and the like of a transmission part, although the direct current isolating switch of some companies adopts a fully-closed structure, enough wide-temperature lubricating grease is filled, parts are subjected to hot galvanizing or tinning treatment, the cost is greatly increased, and the maintenance and signal acquisition are not facilitated. The transmission shaft is made of stainless steel, and the rotation link adopts an engineering plastic bearing to replace a brass shaft sleeve, so that the rust of the rotation shaft caused by the corrosion can be avoided, but the strength of the transmission rod is far inferior to that of a metal material.
Through research, the jamming and rusting of the contact parts between the transmission mechanisms are directly reflected in the increase of the torque of the main shaft of the transmission mechanism. Therefore, the invention judges the faults of jamming, rusting and the like of the contact part between the transmission mechanisms by measuring the main shaft torque of the transmission mechanisms. The torque measurement is a traditional and mature technology of a non-electricity electrical measurement method, a resistance strain gauge is fixed on an output shaft of an operating mechanism, and the strain gauge converts sensed torsion into an electric signal in the rotation process of a main shaft and then transmits the electric signal to a digital twin system. In addition, for the problem of jamming and corrosion of the non-contact part of the isolating switch transmission mechanism, the jamming and corrosion problem cannot be reflected on the resistance strain gauge, and therefore video signals are collected through camera shooting equipment such as a camera and are sent to a digital twin system for analysis.
There are many methods for measuring torque, including various types of sensors such as strain gauge, vibrating wire type, photoelectric type, magnetoelectric type, capacitance type, wireless surface acoustic wave type, soft measurement type, and laser diffraction type. At present, most of methods applied to domestic torque measurement are of a dependent type. The resistance strain gauge can be adhered to a designated point on the surface of the transmission part to be measured, and when the transmission part to be measured is subjected to a stress to generate strain, the strain gauge adhered to the transmission part to be measured is subjected to the same mechanical deformation, so that the resistance of the strain gauge is correspondingly changed. At this time, the resistance strain gauge converts the mechanical quantity into the variable quantity of the resistance and outputs the variable quantity, and the non-electricity electrical measurement is realized. The position and the mode of the resistor strain gauge are shown in fig. 3. Wherein, adopt foil gage measurement torque's advantage to lie in: 1) the sensitivity and the precision of the strain measurement are high; 2) the strain gauge is small in size and light in weight, and basically has no influence on the working state and stress distribution of the transmission part to be tested; 3) the measuring range is large, and elastic deformation and plastic deformation can be measured; 4) can adapt to various complex environments and is convenient for multi-point measurement.
The asynchronous motor is an energy conversion device in an electric mechanism, the input power of the motor comprehensively reflects the information of a mechanical system, and the presence or absence of jamming and jamming positions can also be judged by measuring the change of the input power of the motor along with the rotation angle by using current and voltage sensors. Therefore, by measuring the motor current and voltage, it is possible to judge the motor failure and the power failure. In the invention, the working power supply of the alternating current three-phase motor is connected with a current and voltage sensor to sample current and voltage, and then is connected with the input end of the electric mechanism. The sensor outputs the collected current and voltage signals to the digital twin system for analysis. The data acquisition mode of the digital twin system of the direct current power transmission and distribution isolating switch is shown in figure 4.
In step 102, simulation calculation is performed according to the operation parameter information by using the virtual model of the isolating switch, and simulation data is obtained.
Preferably, the performing simulation calculation according to the operation parameter information by using the virtual model of the disconnecting switch to obtain simulation data includes:
simulating by using MATLAB simulation software according to the operation parameter information by using the virtual model of the isolating switch to obtain simulation data, simultaneously transmitting all model parameters and the simulation data to the service module through a Socket interface based on a TCP/IP protocol, and writing the model parameters and the simulation data into the twin database through an ODBC interface; and establishing the virtual model of the isolating switch by adopting SolidWorks software.
In step 103, determining the operation state of the direct current power transmission and distribution isolating switch according to the simulation data; wherein the operating state comprises: normal and fault.
And 104, when the operation state is a fault, regulating and controlling the direct current power transmission and distribution isolating switch of the entity to stop operating by using the isolating switch virtual model.
Preferably, wherein the method further comprises:
and determining a fault type according to the simulation data, and sending an alarm instruction and data related to the fault type to the service module so as to send alarm information to a control terminal through the service module.
Fig. 5 is a diagram of an operation mechanism of a digital twin system of a direct current transmission and distribution isolating switch according to an embodiment of the invention. As shown in fig. 5, includes: 1) and the information such as the equipment attribute, the parameter, the data and the like collected by the physical entity is sent to a virtual model, a twin database and a service system in an OPC-UA communication mode. 2) The virtual model loads data provided by the physical entity into the digital model, and a SolidWorks software is adopted to establish a three-dimensional entity model of the direct-current power transmission and distribution isolating switch. And (4) adopting MATLAB or other simulation software to carry out simulation. All model parameters and model simulation data are transmitted to a service system through a Socket (TCP/IP) interface and written into a twin database through an ODBC interface of MySql. 3) And the service system module calls corresponding services according to the related attributes, parameters and state information of the direct current power transmission and distribution isolating switch provided by the physical entity, and finally feeds back the corresponding services to the virtual module and the real module. 4) And (4) adopting a MySql open source database to construct a twin database of the isolating switch twin system, and storing all twin data.
Fig. 6 is a flowchart of an assembly debugging state detection method of a digital twin system-based dc power transmission and distribution isolating switch according to an embodiment of the present invention. As shown in fig. 6, includes: 1) acquiring information such as torque, pressure, video and the like of an isolating switch of an entity in real time, and sending the information to a virtual model in an OPC-UA communication mode; the obtained torque, pressure, video and other information are respectively used for judging the faults of the isolating switch such as jamming, contact finger contact, corrosion and the like. 2) The virtual model simulates according to the received data to obtain simulation data; the simulation according to the received data is to ensure the synchronization of the virtual and real systems.
3) And the twin system analyzes whether the installation or debugging of each step meets the design requirements or not according to the simulation data. 4) And if the design requirements are met, the isolating switch is in a normal state. 5) If the design requirements are not met, the isolating switch fails, and the virtual model regulates and controls the physical entity to stop continuously carrying out installation and debugging. 6) Data, instructions and the like are transmitted to a service system (service module) through an interface, and then transmitted to a staff terminal through the service system, and alarm information is sent. In the process, all the collected and generated data can realize bidirectional interaction with the twin database through corresponding protocols and database interfaces.
The following specifically exemplifies embodiments of the present invention
In the embodiment of the invention, a torque sensor, a contact finger pressure sensor, a camera module and other data acquisition equipment are arranged on the single-column single-arm vertically telescopic direct current power transmission and distribution isolating switch. And in the experimental process, data are transmitted into a virtual model, a service system and a twin data module through an OPC-UA protocol interface. The digital twin system of the direct current power transmission and distribution isolating switch is constructed in a mode of multi-software collaborative modeling such as SolidWorks and MATLAB based on a MySql database configured by a simulation platform to support the operation of a twin database, a service application program and a virtual twin model (a geometric model, a physical model, a behavior model and a rule model), and the overall architecture of the digital twin system is shown in FIG. 7. Wherein the overall architecture comprises: a physical layer, a model layer, a platform layer, and an application layer. Wherein, 1) the physical layer corresponds to the physical entity and various sensors of the direct current power transmission and distribution isolating switch. 2) The model layer corresponds to a virtual twin model of the isolating switch, and the virtual direct current power transmission and distribution isolating switch is constructed in a multi-software cooperation mode, so that real mapping of physical entities is realized. 3) The platform layer corresponds to a twin database and service system, and based on strong connection, flexible data management and rapid application development capability of the platform, equipment connection, data acquisition, data storage, data service, application development and WEB front-end system integration are realized. 4) The application layer corresponds to front-end display, and multi-level monitoring of the whole life cycle of the equipment is realized by constructing a three-dimensional virtual model, real-time data and state display.
The experiment is carried out according to the operation mechanism of the digital twin system shown in fig. 7, and the result can be monitored by the front-end display module. The field screen can display a three-dimensional virtual scene, the real-time state of the isolating switch and the process of each step of installation and debugging. The three-dimensional virtual scene can realize switching of different visual angles through human-computer interaction, and the real-time running state of the isolating switch can be visually checked. . The real-time performance of front-end display is improved through research and optimization of a virtual scene, a data acquisition mode, a data management strategy, a real-time data driving model method and a front-end and back-end data interaction mode. According to the invention, through practical tests, the delay between the virtual twin model and the physical entity of the equipment is within an allowable range, the requirement in the practical operation process can be met, and the feasibility and the effectiveness of the detection method are verified.
Fig. 8 is a schematic structural diagram of a state detection device 800 of a dc power transmission and distribution isolating switch based on a digital twin system according to an embodiment of the present invention. As shown in fig. 8, a state detection apparatus 800 for a dc power transmission and distribution isolating switch based on a digital twin system according to an embodiment of the present invention includes: a data acquisition unit 801, a simulation unit 802, an operation state determination unit 803, and a regulation unit 804. Wherein the digital twinning system comprises: the system comprises a physical direct current power transmission and distribution isolating switch, an isolating switch virtual model, a service module and a twin database.
Preferably, the data obtaining unit 801 is configured to obtain operation parameter information of the physical dc power transmission and distribution disconnecting switch in real time, and send the operation parameter information to the virtual model of the disconnecting switch and the twin database based on an OPC-UA communication mode.
Preferably, the data obtaining unit 801 obtains the operation parameter information of the physical dc power transmission and distribution disconnecting switch, including:
the method comprises the following steps of acquiring the torque of a main shaft of a transmission mechanism of the direct-current isolating switch, the input power of a motor, the rotation angle of the motor, the pressure of a contact finger contact of the motor, the current of the motor, the voltage of the motor and the operation time of the motor in real time by using different types of high-precision sensors;
and acquiring video information of the transmission mechanism by using the camera equipment.
Preferably, the strain gauge is used to measure the torque of the main shaft of the transmission mechanism.
Preferably, the simulation unit 802 is configured to perform simulation calculation according to the operation parameter information by using the virtual model of the disconnecting switch, and obtain simulation data.
Preferably, the simulation unit 802, using the virtual model of the disconnecting switch to perform simulation calculation according to the operation parameter information, and acquiring simulation data includes:
simulating by using MATLAB simulation software according to the operation parameter information by using the virtual model of the isolating switch to obtain simulation data, simultaneously transmitting all model parameters and the simulation data to the service module through a Socket interface based on a TCP/IP protocol, and writing the model parameters and the simulation data into the twin database through an ODBC interface; and establishing the virtual model of the isolating switch by adopting SolidWorks software.
Preferably, the operation state determining unit 803 is configured to determine an operation state of the dc power transmission and distribution disconnecting switch according to the simulation data; wherein the operating state comprises: normal and fault.
Preferably, the regulating and controlling unit 804 is configured to regulate and control the physical dc power transmission and distribution disconnecting switch to stop operating by using the virtual isolating switch model when the operating state is a fault.
Preferably, wherein the apparatus further comprises:
and the alarm unit is used for determining the fault type according to the simulation data, sending an alarm instruction and data related to the fault type to the service module, and sending alarm information to the control terminal through the service module.
The state detection apparatus 800 of the dc power transmission and distribution disconnecting switch based on the digital twin system according to the embodiment of the present invention corresponds to the state detection method 100 of the dc power transmission and distribution disconnecting switch based on the digital twin system according to another embodiment of the present invention, and details thereof are not repeated herein.
The invention has been described with reference to a few embodiments. However, other embodiments of the invention than the one disclosed above are equally possible within the scope of the invention, as would be apparent to a person skilled in the art from the appended patent claims.
Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the [ device, component, etc ]" are to be interpreted openly as referring to at least one instance of said device, component, etc., unless explicitly stated otherwise. The steps of any method disclosed herein do not have to be performed in the exact order disclosed, unless explicitly stated.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A state detection method of a direct current power transmission and distribution isolating switch based on a digital twin system is characterized in that the digital twin system comprises the following steps: the system comprises a physical direct current power transmission and distribution isolating switch, an isolating switch virtual model, a service module and a twin database; the method comprises the following steps:
the method comprises the steps of acquiring running parameter information of a direct current power transmission and distribution isolating switch of an entity in real time, and sending the running parameter information to an isolating switch virtual model and a twin database based on an OPC-UA communication mode;
performing simulation calculation according to the operation parameter information by using the virtual model of the isolating switch to obtain simulation data;
determining the running state of the direct current power transmission and distribution isolating switch according to the simulation data; wherein the operating state comprises: normal and fault;
and when the running state is a fault, regulating and controlling the direct current power transmission and distribution isolating switch of the entity to stop running by using the isolating switch virtual model.
2. The method of claim 1, wherein the obtaining the operational parameter information of the physical dc power transmission and distribution isolating switch comprises:
the method comprises the following steps of acquiring the torque of a main shaft of a transmission mechanism of the direct-current isolating switch, the input power of a motor, the rotation angle of the motor, the pressure of a contact finger contact of the motor, the current of the motor, the voltage of the motor and the operation time of the motor in real time by using different types of high-precision sensors;
and acquiring video information of the transmission mechanism by using the camera equipment.
3. The method of claim 2, wherein the torque of the drive train main shaft is measured using a strain gauge.
4. The method of claim 1, wherein the performing simulation calculations according to the operating parameter information by using the virtual model of the disconnecting switch to obtain simulation data comprises:
simulating by using MATLAB simulation software according to the operation parameter information by using the virtual model of the isolating switch to obtain simulation data, simultaneously transmitting all model parameters and the simulation data to the service module through a Socket interface based on a TCP/IP protocol, and writing the model parameters and the simulation data into the twin database through an ODBC interface; and establishing the virtual model of the isolating switch by adopting SolidWorks software.
5. The method of claim 1, further comprising:
and determining a fault type according to the simulation data, and sending an alarm instruction and data related to the fault type to the service module so as to send alarm information to a control terminal through the service module.
6. A state detection device of a direct current power transmission and distribution isolating switch based on a digital twin system is characterized in that the digital twin system comprises: the system comprises a physical direct current power transmission and distribution isolating switch, an isolating switch virtual model, a service module and a twin database; the device comprises:
the system comprises a data acquisition unit, a data analysis unit and a data analysis unit, wherein the data acquisition unit is used for acquiring the operation parameter information of a direct current power transmission and distribution isolating switch of an entity in real time and sending the operation parameter information to the isolating switch virtual model and a twin database based on an OPC-UA communication mode;
the simulation unit is used for carrying out simulation calculation according to the operation parameter information by utilizing the virtual model of the isolating switch to obtain simulation data;
the operation state determining unit is used for determining the operation state of the direct current power transmission and distribution isolating switch according to the simulation data; wherein the operating state comprises: normal and fault;
and the regulating and controlling unit is used for regulating and controlling the direct current power transmission and distribution isolating switch of the entity to stop running by utilizing the isolating switch virtual model when the running state is a fault.
7. The apparatus of claim 6, wherein the data obtaining unit obtains the operation parameter information of the physical dc power transmission and distribution isolating switch, and comprises:
the method comprises the following steps of acquiring the torque of a main shaft of a transmission mechanism of the direct-current isolating switch, the input power of a motor, the rotation angle of the motor, the pressure of a contact finger contact of the motor, the current of the motor, the voltage of the motor and the operation time of the motor in real time by using different types of high-precision sensors;
and acquiring video information of the transmission mechanism by using the camera equipment.
8. The device of claim 7, wherein the strain gauge is used to measure the torque of the drive train spindle.
9. The apparatus of claim 6, wherein the simulation unit performs simulation calculation according to the operation parameter information by using the virtual model of the disconnecting switch to obtain simulation data, and includes:
simulating by using MATLAB simulation software according to the operation parameter information by using the virtual model of the isolating switch to obtain simulation data, simultaneously transmitting all model parameters and the simulation data to the service module through a Socket interface based on a TCP/IP protocol, and writing the model parameters and the simulation data into the twin database through an ODBC interface; and establishing the virtual model of the isolating switch by adopting SolidWorks software.
10. The apparatus of claim 6, further comprising:
and the alarm unit is used for determining the fault type according to the simulation data, sending an alarm instruction and data related to the fault type to the service module, and sending alarm information to the control terminal through the service module.
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