CN113705026B - Digital modeling and intelligent detection system for power secondary equipment - Google Patents
Digital modeling and intelligent detection system for power secondary equipment Download PDFInfo
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Abstract
The digital modeling and intelligent detection system for the secondary power equipment comprises artificial intelligent software for digital modeling and automatic detection system software and hardware configuration generation and closed-loop intelligent detection, applies the idea of a digital main line to the intelligent production detection process of a secondary power equipment manufacturer of a power system, and models a digital model of the secondary power equipment from the bottom layer by the same grammatical semantics and has the same data source, so that the digital model has the description of standard development, is free from distortion in step-by-step transmission and can be traced back. A digital mainline is a way to create unified data access with a single real source. When used throughout an enterprise, this approach may correspond a reliable set of data to different functions, thereby achieving consistency and enhancing collaboration. After the data set is started, the data can be synchronized in real time, so that upstream and downstream information can be used for all users, product innovation is promoted, the process is optimized, efficiency and worker productivity are improved, and development of power enterprises is influenced a little profoundly.
Description
Technical Field
The invention belongs to the field of digital modeling and intelligent detection systems of equipment, and particularly relates to a digital modeling and intelligent detection system of electric power secondary equipment.
Background
The national smart grid industry base is advanced in development particularly in the aspects of relay protection and power system automation industry, and 80% of related manufacturing plants in China are gathered. But under the large environment that the population dividend disappears and the labor cost rises, the method has great restriction on the international competitiveness of the manufacturing industry in China. The power system automation industry is the same as most manufacturing industries, and the "industry 4.0" is a necessary way for developing a product which cannot be bypassed, needs to reduce dependence on labor force to a greater extent, and meets personalized requirements of users, so that it is imperative to seek an advanced technology which can replace manpower, improve production efficiency, improve product quality and ensure product consistency. According to traditional intelligent manufacturing, a product model is transmitted to a digital production line in a one-way mode, all links are not communicated, and effective integration and feedback are lacked in digital measurement and detection and product definition. Therefore, the digital model of the secondary equipment needs to be modeled from the bottom layer by the same syntax semantics and have the same data source, so that the applicant provides a digital modeling and intelligent detection system for the secondary equipment of the electric power.
Disclosure of Invention
The invention provides a digital modeling and intelligent detection system for electric power secondary equipment, aiming at the problems that the traditional intelligent manufacturing is in one-way transmission from a product model to a digital production line, all links are not communicated, and the digital measurement and detection and product definition lack effective integration and feedback. A digital mainline is a way to create unified data access with a single real source. When used throughout an enterprise, this approach may correspond a reliable set of data to different functions, thereby achieving consistency and enhancing collaboration. After the data set is started, the data can be synchronized in real time, so that upstream and downstream information can be used for all users, product innovation is promoted, the process is optimized, efficiency and worker productivity are improved, and development of power enterprises is influenced a lot.
The invention provides a digital modeling and intelligent detection system for secondary power equipment, which comprises artificial intelligent software for digital modeling and automatic detection system software and hardware configuration generation and closed-loop intelligent detection,
the modeling system corresponding to the digital modeling is applied to secondary equipment of the power system and is divided into the following stages;
(1) establishing an extensible tag professional digital signal simulation set, wherein the set element attributes of the extensible tag professional digital signal simulation set have the same semantic tag and comprise an electric signal attribute tag, an image attribute tag and an information attribute tag;
(2) establishing a digital model board card based on an extensible label professional signal digital simulation set, wherein the extensible label professional signal digital simulation set comprises a board card electric signal set, a board card terminal physical characteristic, a board card self physical characteristic and a terminal physical position modeling, and forming a corresponding board card set through combination;
(3) building a corresponding device structure based on the digital model board card set according to a designed or to-be-designed device 3D case model, and further building a specific digital device model;
the artificial intelligence software for generating the software and hardware configuration of the automatic detection system is specifically as follows:
aiming at an application scene before intelligent detection, generating a label signal set which can be identified by a machine in a database after modeling is finished, generating detection outlines at all levels, namely detection case sets by means of artificial intelligence comparison software, wherein the label signal set also corresponds to a hardware platform detection excitation signal in an automatic closed-loop detection system, and constructing a complete detection system according to the intelligent detection system requirement configuration detection equipment;
the closed loop intelligent detection specifically comprises the following steps:
aiming at the scenes of plates, devices and a transformer substation system, the built software and hardware of a detection system are used for applying excitation according to requirements, the modeled actual production detection product is connected to an intelligent detection system through wireless broadband network communication, big data, modern sensing and vision technologies to realize complete closed-loop detection on the appearance and the function of a detected object, the detection result is automatically recovered, the detection error point can be judged, diagnosed and positioned, and the detection result is prompted and stored in a database;
the hardware configuration of the closed-loop intelligent detection comprises a measurement and control device, an adapter, a switching matrix, a dial and an excitation signal, wherein the adapter is used for being quickly connected with the detected device, the switching matrix is used for detecting the switching of the excitation signal, the problem that the physical appearance is the same but the functions are different is solved, and the dial solves the problem that the physical positions are different;
the control system using the intelligent closed-loop detection technology in closed-loop intelligent detection reads the two-dimensional code by scanning the code, analyzes the information of the two-dimensional code, acquires the configuration information of the corresponding device from the MES, accesses a working power supply to the device according to the configuration information, communicates with the device to read the configuration information ICD of the device, compares all the known information to determine whether the known information is different, drives a switching matrix, selects a detection case set and starts automatic detection.
As a further improvement of the invention, the corresponding device structure comprises the board card corresponding to the device model, the board card installation slot and the board card subset.
As a further improvement of the present invention, the modeling considerations in the modeling system include device physical characteristics, device physical locations, device subsets, and corresponding logical loops.
As a further improvement of the invention, the detection outline generated by the artificial intelligence comparison software comprises a board level, a device level and even a substation system level.
As a further improvement of the invention, the device configuration information comprises information model, board composition and software version.
As a further improvement of the invention, the measurement and control equipment in the closed-loop intelligent detection comprises a small signal source, a measurement device, a collection device, an IO device, a controller and a simulation circuit breaker.
Compared with the prior art, the invention has the following remarkable advantages:
in the power system automation industry, the invention firstly maps the secondary equipment physical model, the electrical model and the information model on the secondary equipment digital model in an associated manner, realizes the digital labels of electrical signals, physical positions and information attributes, establishes the secondary equipment digital model with unified semantics capable of being recognized by a machine, and fuses two artificial intelligence development directions: an expert system and original code are automatically generated. The former integrates professional knowledge in the aspect of automatic testing, provides a development framework for the latter, and greatly makes up for the defect of automatically generating codes;
the digital model is applied to the intelligent detection of secondary equipment and is used for stringing a data main line from design modeling to automatic detection. The method comprises the steps of modeling a basic mathematical model, namely a classification label set, classifying signals of a relay protection device of a power system and other IED equipment by using the basic mathematical set model, dividing the signals into a plurality of subsets of different signal types to form an electrical signal set, wherein the largest extensible IED electrical signal set is a data signal dictionary with electrical properties. These labeled classifications into distinct sets of professional electrical property signals include: the system comprises an alternating current digital quantity input device, an alternating current analog quantity input device, an output device, an outlet loop signal set, a sensing signal set, other digital signal input sets and the like, wherein a new signal set is continuously expanded, and future technical development is considered;
the invention maximally corresponds the signal label attribute in the electrical signal data dictionary to the detection excitation of the prefabricated intelligent detection system, and the classification mode of the signal label attribute is the basic signal attribute and classification accumulated and refined according to the detection experience of 20 years.
The invention maps the label of the secondary intelligent equipment of the power grid, namely IED with description file, ICD, the physical model and the electric signal model in one-to-one correspondence. The method includes the steps that the leaf nodes of the ICD file of the IED device comprise device electrical attributes, the information paths of the tree structure in the ICD file correspond to physical models to obtain device electrical models, and the ICD file can be used for directly establishing device electrical models, namely, the device physical terminal attributes are mapped with path information described in the ICD file and electrical signals corresponding to the information one by one.
The IED device establishes a unique electric signal semantic maximization data dictionary according to the most basic electric signal classification labels, establishes a board digital model based on the maximization data dictionary, establishes a device digital model based on the board digital model, and finally establishes a system digital model. Such digital models are not only a service for intelligent detection; also beyond the concept of digital twinning-the working operation as a digital model virtual reality simulating secondary device, it is a data main line (digital stream) that runs through the complete life cycle of the secondary device, a unified fully digital model. All links have a digital model which is complete and rich in information, is in accordance with a unified open standard, established specifications and semanteme, and can be stably and unambiguously read by a machine (or a system).
The secondary equipment digital model is established in the same electric label dictionary and a unified physical model. The modeling idea of the method runs through secondary equipment planning, analysis, design, manufacture and test until a full life cycle data main line of a product in the operation maintenance and retirement stages.
Drawings
FIG. 1 is a schematic modeling diagram of the present invention;
fig. 2 is a schematic diagram of the intelligent closed loop detection system of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
the invention provides a digital modeling and intelligent detection system for secondary power equipment, which applies the idea of a digital main line to the intelligent production detection process of a secondary power equipment manufacturer of a power system, and models a digital model of the secondary power equipment from the bottom layer by the same grammatical semantics, so that the digital model has the description of standard development, is not distorted in step-by-step transmission and can be traced. A digital mainline is a way to create unified data access with a single real source. When used throughout an enterprise, this approach may correspond a reliable set of data to different functions, thereby achieving consistency and enhancing collaboration. After the data set is started, the data can be synchronized in real time, so that upstream and downstream information can be used for all users, product innovation is promoted, the process is optimized, efficiency and worker productivity are improved, and development of power enterprises is influenced a lot.
As a specific embodiment of the invention, the digital modeling of the intelligent detection system of the power secondary equipment is constructed by a bottom layer based on a uniform information label; the island data can not be generated by the model different from the original model; the method is the basis of a digital main line penetrating through research, development, production, detection and service of secondary equipment of a power system.
The general framework comprises three parts: digitally modeling the detected equipment; digitally modeling the detection system; based on the similar label semanteme, the intelligent detection system with corresponding software and hardware is automatically generated by a machine according to an expert system.
The whole system is divided into three main parts:
1. the numerical modeling is shown in fig. 1: the design modeling system is applied to secondary equipment of a power system and is divided into three stages.
(1) Establishing an extensible tag professional digital signal simulation set, wherein the set element attributes of the extensible tag professional digital signal simulation set have the same semantic tag and comprise an electric signal attribute tag, an image attribute tag and an information attribute tag;
(2) establishing a digital model board card based on an extensible label professional signal digital simulation set, wherein the extensible label professional signal digital simulation set comprises a board card electric signal set, a board card terminal physical characteristic, a board card self physical characteristic and a terminal physical position modeling, and forming a corresponding board card set through combination;
(3) building a corresponding device structure based on the digital model board card set according to a designed or to-be-designed device 3D case model, and further building a specific digital device model;
the digital modeling technology of the secondary equipment classifies various electrical attributes of the secondary equipment to be detected, labels classification results, the labels are semantic information which can be identified by a machine, and then through a computer built-in expert system, the digital models of the secondary equipment to be detected with the electrical label attributes are analyzed by using artificial intelligent software.
The electric tag comparison and mapping of the automatic detection hardware system are formed by the application, a standard hardware platform of a corresponding detection system, measurement and control equipment, a virtual instrument, a detection standard source, a switching matrix and the like required by assembly detection. The detection outline is automatically generated, a detection case set required by the detection system is constructed, and the characteristics and the error range of the test result can be configured or prefabricated according to the requirements of customers.
2. Generating artificial intelligence software for automatically detecting system software and hardware configuration: for the first three application scenes of intelligent detection, a label signal set (comprising an electric signal attribute label, an image attribute label, an information attribute label and the like) which can be identified by a machine is generated in a database after the modeling is finished. And generating detection outlines at all levels (board card level, device level, screen cabinet level and even transformer substation system level) by means of artificial intelligence comparison software, namely a detection case set. The label signal set also corresponds to a hardware platform detection excitation signal in the automatic closed-loop detection system, and a complete detection system is set up according to the intelligent detection system requirement configuration detection equipment.
3. Closed loop intelligent detection: aiming at the scenes of plates, devices, screen cabinets and transformer substation systems, the built software and hardware of the detection system are used for exciting according to requirements, the modeled actual production detection product is connected to the intelligent detection system through wireless broadband network communication, big data, modern sensing and vision technologies to realize complete closed-loop detection on the appearance and functions of the detected object, the detection result is automatically recovered, the error point of alignment, diagnosis and positioning detection can be judged, and the detection result is prompted and stored in a database;
according to the control system for the intelligent closed-loop detection technology, the two-dimension code is read through code scanning, the information of the two-dimension code is analyzed, the configuration information such as the corresponding device information model, the board card composition and the software version is obtained from the MES, the device is accessed into a working power supply according to the configuration information, the device communication reading device configuration information ICD is compared with all known information, the switching matrix is driven, the detection case set is selected, and automatic detection is started.
The hardware configuration of the closed-loop intelligent detection is measured and controlled by a measuring and controlling device (a small signal source, measurement, collection, IO, a controller and a simulation circuit breaker). An adapter: for quick connection with the device to be tested. Switching matrix: the device is used for detecting excitation signal switching and solving the problem that the physical appearance is the same but the functions are different. A dial: solving the problem of the inconsistent physical position of the similar products and the composition of the excitation signal.
The specific application examples of the invention are as follows:
scenario case 1: electric power automation industry board card detection
The problem to be solved is as follows: in the traditional board card test, a tester manually builds a test instrument, and manually compiles a program to compile a test method for a design board card.
The physical attribute and the electrical attribute of the Digital modeling board are established in a Digital main line (Digital thread) mode through the same semantic tag, the produced board is automatically detected according to the model by the mode, and board detection, research and development design and a production management system are connected in series to be the first step application of Digital main line detection.
The application condition is as follows: the board card detection items successfully implemented in related enterprises are all FCT detection corresponding to the board cards produced by secondary equipment enterprises. At present, the project runs well, nearly ten thousand plates can be detected in one day by each line, and the test efficiency is improved by 90 percent compared with the prior manual test.
Scenario case 2: IED detection of secondary equipment in power automation industry
The problem to be solved is as follows: the relay protection of the power system and other IED equipment are tested through a manual and semi-automatic testing system, the main core problems are that a small quantity of products and various varieties are produced, the product models are multiple, the function difference is large, the nonstandard products bring many problems to automatic testing, testing personnel need to continuously switch testing modes, and testing research personnel need to continuously adjust software and hardware of the testing system according to requirements. Due to the invariance, the automatic industry test becomes a bottleneck, and the product quality and the production consistency are seriously influenced.
A Digital model of the tested secondary equipment is established on the basis of board card modeling in a Digital modeling mode, a Digital main line (Digital thread) is further prolonged to the automatic detection of the device, and as mentioned above, the artificial intelligence expert system of the test system can establish a complete test model corresponding to a real test system according to the data model of the device and combine test cases to automatically detect the device.
The application condition is as follows:
the high, medium and low voltage series of an enterprise all adopt the test system. Nearly 9 thousands of devices are automatically tested each year. Part of the test system has been in use for 7 years, and more than 20 thousands of test devices are accumulated, and the system is still in a perfect and stable operation state. Each test time is 3-5 minutes, and the test efficiency is greatly improved compared with manual test.
The other enterprise is an unmanned workshop, all the enterprises depend on a robot arm to carry the device, the detection system is compatible with devices with different sizes, the detection system is connected with the MES system, the tested device is interacted with the MES information through the two-dimensional code, the test is started after the digital model attribute is completely consistent with the production database to carry out specific detection on the actual product, and the specific digital model is used. And adjusting the test case to finish automatic detection.
The application condition is as follows: the full-automatic unmanned workshop operates for one year in thought source electric, and the system is good in operation state and stable in operation at present. The daily production capacity is about 300, which is in accordance with the design expectation. The number of testers is reduced from 40 to 1, and the economic benefit is remarkable.
Scenario case 3: electric power automation industry screen cabinet detection
The problem to be solved is as follows: the screen cabinet detection of a secondary manufacturer in the power system automation industry is always an industry bottleneck, and the screen cabinet system detection is performed in a manual detection mode before decades of years, so that the screen cabinet system detection is performed manually, visually and by means of notes, the detection is embodied in the way that a secondary power screen cabinet drawing cannot be identified through software, a screen cabinet detection outline is automatically generated, appearance detection can only be performed through manpower, and the like, and therefore the detection efficiency is low and the detection cost is high.
On the basis of device modeling by a Digital modeling mode, Digital models of a tested screen cabinet, a screen cabinet terminal, a tested device set on the screen cabinet and other logic loops are established, the application of a Digital main line (Digital thread) in the detection aspect is further prolonged, the Digital main line is prolonged to the device from a plate, and the automatic detection of the screen cabinet is further realized.
The application condition is as follows: at present, the test system has good operation effect, the test time is shortened from 1 hour to 5 minutes, the product quality is greatly improved, the detection consistency is high, and the personnel efficiency is improved by 90 percent.
Scenario case 4: detecting a system in the electric power automation industry;
the problem to be solved is as follows: in the detection process of the power system transformer substation system, each engineering project is different, the transformer substation system difference is large due to requirements, inconvenience is brought to system debugging, the reasons for the inconvenience are still that all links of field operation are not completely communicated from research, development, design and production of data information, and island information needs manual configuration and comparison.
By means of Digital modeling based on the screen cabinet, a Digital main line (Digital Thread) is further extended to the site operation and operation of a transformer substation, all secondary links of a power system are opened, a detection system can automatically generate a screen cabinet detection scheme, and a robot arm is used for replacing manpower to automatically detect the screen cabinet. The scheme is not only suitable for production and debugging of secondary equipment manufacturers, but also suitable for on-site commissioning of the IED equipment of the power grid, daily operation and maintenance and full-life-cycle intelligent detection until operation quits.
The application condition is as follows: an optical cable is used as an information transmission channel, the information transmission standard is IEC61850, the optical cable and the original system are combined to form a new closed-loop online monitoring system, in the process of on-line monitoring the secondary system state, the analog quantity is collected in situ by the merging unit, the analog quantity and the conversion report data received by the protection device are collected by the protocol converter, the state quantity is collected by the intelligent operation box, and finally the on-line monitoring working system obtains all necessary data information, then, various data information and models are transmitted on the basis of the IEC61850 information transmission standard, the information and the model are collected and collated by the exchanger and then transmitted to the comprehensive monitoring device and the fault recording device, and recording the data model, receiving information by a background, analyzing various real-time data of the online monitoring work, and realizing state detection and various logic evaluation judgments.
The above description is only one of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made in accordance with the technical spirit of the present invention are within the scope of the present invention as claimed.
Claims (6)
1. A digital modeling and intelligent detection system for secondary electric power equipment comprises artificial intelligent software for digital modeling and automatic detection system software and hardware configuration generation and closed-loop intelligent detection,
the modeling system corresponding to the digital modeling is applied to secondary equipment of the power system and is divided into the following stages;
(1) establishing an extensible tag professional digital signal simulation set, wherein the set element attributes of the extensible tag professional digital signal simulation set have the same semantic tag and comprise an electric signal attribute tag, an image attribute tag and an information attribute tag;
(2) establishing a digital model board card based on an extensible label professional signal digital simulation set, wherein the extensible label professional signal digital simulation set comprises a board card electric signal set, a board card terminal physical characteristic, a board card self physical characteristic and a terminal physical position modeling, and forming a corresponding board card set by combining the board card electric signal set, the board card terminal physical characteristic, the board card self physical characteristic and the terminal physical position modeling;
(3) building a corresponding device structure based on the digital model board card set according to a designed or to-be-designed device 3D case model, and further building a specific digital device model;
the artificial intelligence software for generating the software and hardware configuration of the automatic detection system is specifically as follows:
aiming at an application scene before intelligent detection, generating a label signal set which can be identified by a machine in a database after modeling is finished, generating detection outlines at all levels, namely detection case sets by means of artificial intelligence comparison software, wherein the label signal set also corresponds to a hardware platform detection excitation signal in an automatic closed-loop detection system, and constructing a complete detection system according to the intelligent detection system requirement configuration detection equipment;
the closed loop intelligent detection specifically comprises the following steps:
aiming at the scenes of plates, devices and a transformer substation system, the built software and hardware of a detection system are used for applying excitation according to requirements, the modeled actual production detection product is connected to an intelligent detection system through wireless broadband network communication, big data, modern sensing and vision technologies to realize complete closed-loop detection on the appearance and the function of a detected object, the detection result is automatically recovered, the detection error point can be judged, diagnosed and positioned, and the detection result is prompted and stored in a database;
the hardware configuration of the closed-loop intelligent detection comprises a measurement and control device, an adapter, a switching matrix, a dial and an excitation signal, wherein the adapter is used for being quickly connected with the detected device, the switching matrix is used for detecting the switching of the excitation signal, the problem that the physical appearance is the same but the functions are different is solved, and the dial solves the problem that the physical positions are different;
the control system using the intelligent closed-loop detection technology in closed-loop intelligent detection reads the two-dimensional code by scanning the code, analyzes the information of the two-dimensional code, acquires the configuration information of the corresponding device from the MES, accesses a working power supply to the device according to the configuration information, communicates with the device to read the configuration information ICD of the device, compares all the known information to determine whether the known information is different, drives a switching matrix, selects a detection case set and starts automatic detection.
2. The digital modeling and intelligent detection system for the power secondary equipment according to claim 1, wherein the corresponding device structure is built and comprises a board card corresponding to the device model, a board card installation slot and a board card subset.
3. The digital modeling and intelligent detection system for electric power secondary equipment according to claim 1, wherein modeling considerations in the modeling system include device physical characteristics, device physical locations, device subsets and corresponding logic loops.
4. The digital modeling and intelligent detection system for the secondary power equipment of claim 1, wherein the detection schema generated by means of the artificial intelligence comparison software comprises a board level, a device level and even a substation system level.
5. The digital modeling and intelligent detection system for electric power secondary equipment according to claim 1, wherein the device configuration information includes information model, board composition, and software version.
6. The digital modeling and intelligent detection system for the secondary power equipment of claim 1, wherein the measurement and control equipment in the closed-loop intelligent detection comprises a small signal source, a measurement, a collection, an IO, a controller and an analog circuit breaker.
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| CN111948489A (en) * | 2020-07-27 | 2020-11-17 | 国网山东省电力公司电力科学研究院 | Intelligent substation secondary equipment board card-level abnormal defect diagnosis and positioning method and system |
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