CN114067348A - Automatic generation method for security measure ticket of secondary circuit of transformer substation - Google Patents
Automatic generation method for security measure ticket of secondary circuit of transformer substation Download PDFInfo
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Abstract
The invention discloses an automatic generation method of a transformer substation secondary circuit safety measure ticket, which comprises the steps of importing a secondary circuit connection description file SLCD between total station screen cabinets, selecting a certain device as a target, automatically identifying the external connection relation of the device by taking the device as a center, disconnecting the circuit connected with the outside by a preset safety measure library principle, and automatically generating the secondary safety measure ticket; the invention has the advantages that: the safety measure ticket is not required to be manually set, and the secondary safety measure ticket is directly and automatically generated by disconnecting the loop of the device connected with the outside according to the safety measure library principle of a preset system only by acquiring the connection relation of the device.
Description
Technical Field
The invention relates to the technical field of safety measure ticket generation, in particular to an automatic generation method of a transformer substation secondary circuit safety measure ticket.
Background
In the prior art, a safety measure ticket of a transformer substation generally refers to a CAD drawing manually, looks up an external connection loop of a maintenance object, and judges which elements or connection terminals are disconnected according to personal experience and maintenance rules, so that the safety measure ticket is generated manually, and the automation level is low.
Chinese patent publication No. CN112182303A discloses a transformer substation safety measure ticket one-key generation method based on a general rule base for overhaul safety measures, which starts from safety measure requirements of various actual overhaul work tasks of an intelligent transformer substation, defines all safety measure elements by an exhaustion method, and codes the safety measure elements to form a safety measure element coding dictionary table. And defining a general rule base for maintenance safety measures of the intelligent substation to form a typical maintenance safety measure ticket base. And constructing a typical overhaul safety measure ticket operation sequence template library based on the safety measure element data dictionary based on the typical overhaul safety measure ticket library and the safety measure element coding dictionary table. And (3) identifying safety measure relation between the total station soft and hard pressing plate and the device by analyzing the SCD model, instantiating all safety measure elements in a typical overhaul safety measure ticket operation sequence template library based on a safety measure element data dictionary, and realizing one-key automatic generation of the total station safety measure ticket. The transformer substation equipment or wiring may change in real time, the patent application safety measure ticket automatic generation method defines all safety measure elements through an exhaustion method, when the transformer substation equipment or wiring changes, the safety measure elements need to be re-determined, the workload in the whole process is large, errors are easy to occur, and accordingly the safety measure tickets are generated inaccurately or even cannot be generated.
Disclosure of Invention
The invention aims to solve the technical problems that in the prior art, when transformer substation equipment or wiring changes, safety measure elements need to be re-determined, the workload is high in the whole process, errors are easy to occur, and the safety measure ticket is generated inaccurately or even cannot be generated.
The invention solves the technical problems through the following technical means: a secondary circuit safety measure ticket automatic generation method of a transformer substation is characterized in that a secondary circuit connection description file SLCD between total station screen cabinets is imported, a certain device is selected as a target, the external connection relation of the device is automatically identified by taking the device as a center, a circuit connected with the outside is disconnected according to a preset safety measure library principle, and a secondary safety measure ticket is automatically generated.
According to the method, a certain device is selected as a target according to secondary circuit connection description files among the total station screen cabinets, the device is used as a center, the external connection relation of the device is automatically recognized, a circuit connected with the outside is disconnected according to a pre-customized safety measure library principle, a secondary safety measure ticket is automatically generated, when transformer substation equipment or wiring changes, only an introduced SLCA file changes, safety measure elements do not need to be confirmed again, the workload is small, the error rate is low, and the generated safety measure ticket is accurate.
Further, the generation process of the secondary circuit connection description file between the total stations of the screen cabinets comprises the following steps:
constructing a transformer substation secondary loop information model;
and automatically identifying the CAD drawing of the secondary circuit of the transformer substation through CAD image identification software, acquiring character information and connection relation information in the drawing, writing the character information and the connection relation information into corresponding attributes according to the definition of the information model of the secondary circuit of the transformer substation, and forming a total station SLCD file.
Furthermore, the transformer SubStation secondary circuit information model comprises a station element, wherein the station element comprises a plurality of Region elements and a plurality of Cable elements, and the Region element comprises a plurality of client elements; the SubStation element represents the SubStation information to which the model belongs; the Region element represents a cell in the power station, and is divided into an indoor cell and an outdoor cell; the Cubicle element is a screen cabinet in the secondary loop; cable elements represent cables or optical cables among the cabinets, and the Cable elements comprise a plurality of Cable Core elements Wire and a plurality of optical Cable Core elements Core.
Furthermore, the attributes of the cables or optical cables between the cubicles include the numbers of the cables or optical cables between the cubicles, the names of the cubicles at one ends of the cables or optical cables connected between the cubicles, namely, cubeclea, and the names of the cubicles at the other ends of the cables or optical cables connected between the cubicles, namely, cubeclea and cubecleb are reference paths of the cubicles in the corresponding chambers;
the attributes of the cable core element Wire comprise a cable core number, a terminal number TerminalA of the cable core and a terminal number TerminalB of the cable core;
the attributes of the Core element of the optical cable include an optical cable Core number, one end point number PortA of the optical cable Core and the other end point number PortB of the optical cable Core;
the inCore is used for representing the optical fiber connection in the screen cabinets, and the Core is used for representing the optical cable connection between the screen cabinets.
Furthermore, the automatically identifying the secondary circuit CAD drawing of the transformer substation through the CAD drawing identifying software to obtain the text information and the connection relation information in the drawing comprises the following steps:
the method comprises the following steps: establishing a secondary element identification primitive library, formulating and identifying the type of the secondary element, and establishing a standard primitive of each secondary element according to the type of the identified secondary element for the basis of subsequent identification of the secondary element;
step two: identifying the drawing stamp of the CAD drawing, searching the corresponding drawing number in the album catalog according to the drawing stamp number, and determining the information of the screen cabinet and the device to which the CAD drawing belongs;
step three: automatically scaling the drawing to a preset proportion, setting the size of an identification area frame, automatically adjusting the size of the identification area frame, identifying various elements in the CAD drawing, carrying out shape matching on the identification area frame according to the shape and characteristics of each element in a secondary element identification primitive library, and identifying the figure consistent with the primitives in the secondary element identification primitive library as a secondary element;
step four: acquiring attribute information of picked secondary elements, wherein the attributes of the secondary elements comprise secondary devices, secondary screen cabinets, secondary element names and secondary element types to which the secondary elements belong, traversing the text content near the secondary elements according to the positions of the secondary elements, and screen cabinets or device information to which drawings belong, identifying secondary element graphs, and automatically acquiring the attribute information of the secondary elements;
step five: picking up each connecting line in the CAD drawing, acquiring secondary element connecting points connected by the connecting lines through coordinate positions of the head end and the tail end of the connecting lines, and acquiring a connecting relation between the elements by combining position coordinates of the identified secondary elements;
step six: picking up position coordinates and characters of a text box in the CAD graph, matching the position coordinates and the characters with position coordinates of the connecting line, thereby obtaining a corresponding relation between the text box and the connecting line, assigning the characters in the text box to function description attributes of the connecting line, and perfecting function identification of the connecting line;
step seven: repeating the second step to the sixth step to finish the identification of all CAD drawings, performing information integration on the connection information of all secondary elements according to the connection relation of the drawings, and performing loop verification on the connection relation of the secondary loops;
step eight: and outputting a file describing the connection relation of the secondary circuit of the transformer substation or an xml file in a standard format according to actual requirements.
Further, the automatic generation method of the transformer substation secondary circuit safety measure ticket further comprises a safety measure ticket checking process that a user compares the safety measure ticket made by the user with the secondary safety measure ticket automatically generated by the system and judges whether the safety measure ticket made by the user is correct or not.
Further, the secondary safety measure execution process comprises the following steps:
entering a safety measure execution function through a handheld mobile terminal, and showing the number, the function, the position of a screen cabinet, the position of a terminal and the number of a secondary line of a loop which needs to be disconnected by contrasting an automatically generated secondary safety measure ticket;
further, the pre-customized safety measure library principle comprises:
line protection secondary circuit safety measure
1) Checking the positions of all the change-over switches and the pressing plates on the protection screen;
2) checking equipment for bypass protection operation switched on the protection screen, and making error prevention measures for preventing equipment from being touched by mistake and switching a switch by mistake;
3) disconnecting the tripping pressure plate and the closing pressure plate on the protection screen;
4) checking the position of a voltage air switch behind the protection screen, the position of a protection direct current switch and the position of an operation direct current switch;
5) disconnecting the voltage air switch and the voltage small bus to the upper terminal of the protection screen;
6) after the protection screen is disconnected, the current secondary circuit is disconnected, if the switch is in operation, the outer side of the current secondary circuit on the terminal block must be short-circuited and grounded well, and then the current terminal can be opened;
7) a circuit is started after the bus fault is cut off, and insulation measures are taken by the line head;
8) the protection is cut off to a wave recording starting circuit, and the wire end is taken as an insulation measure;
9) disconnecting a positive signal power supply on the protection screen, and taking insulation measures by using a wire end;
10) and putting into service and maintenance of the pressing plate.
Further, the pre-customized safety measure library principle comprises:
safety measure for secondary circuit of main transformer protection screen
1) Checking the positions of all the change-over switches, the current change-over terminals and the pressing plates on the protection screen;
2) checking the positions of a voltage air switch, a protection direct current switch and an operation power supply behind the protection screen;
3) disconnecting the tripping pressure plate, the tripping bypass and the bus coupler pressure plate on the protection screen;
4) disconnecting the voltage air switch and the voltage small bus to the upper terminal of the protection screen;
5) disconnecting a current secondary loop terminal on the protection screen, if the current secondary loop is in operation, short-circuiting and grounding the outer side of the terminal row, and disconnecting a grounding point of the differential protection current secondary loop;
6) disconnecting the bus differential failure starting circuit, removing a bus differential voltage locking circuit by a main transformer, and taking an insulation measure by a line head;
7) disconnecting the protective starting wave recorder loop, and taking an insulation measure at the end of the line;
8) disconnecting a positive signal power supply on the protection screen, and taking an insulation measure at a wire end;
9) and putting into service and maintenance of the pressing plate.
Further, the pre-customized safety measure library principle comprises:
safety measure for secondary circuit of busbar differential protection screen
1) Checking the positions of all the change-over switches and the pressing plates on the protection screen;
2) checking and disconnecting all tripping press plates;
3) checking the positions of an operation direct current switch on a voltage air switch, a direct current switch and a bus-tie operation control screen behind the protection screen;
4) an SD terminal in the mother difference large-current switching screen is detected to be short-circuited to the CT side and grounded;
5) disconnecting the voltage air switch and the voltage small bus to the upper terminal of the protection screen;
6) disconnecting the protective starting wave recorder loop, and taking an insulation measure at the end of the line;
7) disconnecting a positive signal power supply on the protection screen, and taking an insulation measure at a wire end;
8) and putting into service and maintenance of the pressing plate.
The invention has the advantages that: according to the method, a certain device is selected as a target according to secondary circuit connection description files among the total station screen cabinets, the device is used as a center, the external connection relation of the device is automatically recognized, a circuit connected with the outside is disconnected according to a pre-customized safety measure library principle, a secondary safety measure ticket is automatically generated, when transformer substation equipment or wiring changes, only an introduced SLCA file changes, safety measure elements do not need to be confirmed again, the workload is small, the error rate is low, and the generated safety measure ticket is accurate.
Drawings
Fig. 1 is a schematic diagram of a main structure of an SLCD file in a method for automatically generating a security measure ticket of a secondary circuit of a transformer substation according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a hierarchical relationship of an SLCD file in the method for automatically generating a security measure ticket of a secondary circuit of a transformer substation, disclosed by the embodiment of the present invention;
fig. 3 is a flow of a CAD recognition diagram in the automatic generation method of a safety measure ticket of a secondary circuit of a transformer substation, disclosed by the embodiment of the invention;
fig. 4 is an RFID positioning schematic diagram of a secondary safety measure ticket generation process in the automatic generation method of the secondary circuit safety measure ticket of the transformer substation, disclosed by the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A transformer substation secondary circuit safety measure ticket automatic generation method is characterized in that in the process of generating a secondary safety measure ticket, a secondary circuit connection description file SLCD between total station screen cabinets is very critical, a transformer substation secondary circuit is visually displayed according to the secondary circuit connection description file SLCD between the total station screen cabinets, then a certain device is selected as a target, the device is used as a center, the external connection relation of the device is automatically identified, a circuit connected with the outside is disconnected according to a preset safety measure library principle, and the secondary safety measure ticket is automatically generated. Therefore, how to generate the secondary circuit connection description file SLCD between the total station cabinets is introduced firstly, how to realize the visual display of the secondary circuit of the transformer substation is introduced, and finally, the pre-customized safety measure library principle is introduced, and how to execute the secondary safety measure ticket in practical application.
1. SLCD file generation process
As shown in fig. 1 and fig. 2, a transformer SubStation secondary circuit information model is constructed, where the transformer SubStation secondary circuit information model includes a station element, the station element is composed of multiple Region elements and multiple Cable elements, and the Region element is composed of multiple customer elements; the SubStation element represents the SubStation information to which the model belongs; the Region element represents a cell in the power station, and is divided into an indoor cell and an outdoor cell; the Cubicle element is a screen cabinet in the secondary loop; cable elements represent cables or optical cables among the cabinets, and the Cable elements comprise a plurality of Cable Core elements Wire and a plurality of optical Cable Core elements Core.
The attributes of the cables or optical cables among the panels comprise the serial numbers of the cables or optical cables among the panels, the names of the panels at one end of the cables or optical cables among the panels, namely Cubiclex A, and the names of the panels at the other end of the cables or optical cables, namely Cubiclex B, wherein the Cubiclex A and the Cubiclex B are reference paths of the panels in corresponding small chambers;
the attributes of the cable core element Wire comprise a cable core number, a terminal number TerminalA of the cable core and a terminal number TerminalB of the cable core;
the attributes of the Core element of the optical cable include an optical cable Core number, one end point number PortA of the optical cable Core and the other end point number PortB of the optical cable Core;
the inCore is used for representing the optical fiber connection in the screen cabinets, and the Core is used for representing the optical cable connection between the screen cabinets.
In order to smoothly perform secondary circuit modeling, the transformer substation paper version drawing needs to be taken back, and the CAD drawing is drawn according to the drawing picture or the electronic version drawing. And for the stock transformer substation, a CAD graph recognition technology is adopted, a secondary circuit CAD drawing of the transformer substation is automatically recognized through CAD graph recognition software, character information and connection relation information in the drawing are obtained, and the character information and the connection relation information are written into corresponding attributes according to the definition of a secondary circuit information model of the transformer substation, so that a total station SLCD file is formed. For a newly-built transformer substation, a device manufacturer in charge of generating the device provides a device model, a screen cabinet manufacturer provides a screen cabinet model, and finally after the models are submitted to a design institute, the design institute designs a secondary circuit model file SLCD file.
The SLCD file is integrally configured in a CAD drawing identification mode, consistency and correctness of a secondary system physical circuit model and a CAD drawing can be effectively guaranteed, and meanwhile the problem of CAD drawing digitization can be solved. As shown in fig. 3, the method for automatically identifying the secondary circuit CAD drawing of the transformer substation through the CAD drawing identification software to obtain the text information and the connection relation information in the drawing includes:
the method comprises the following steps: establishing a secondary element identification primitive library, formulating and identifying the type of the secondary element, and establishing a standard primitive of each secondary element according to the type of the identified secondary element for the basis of subsequent identification of the secondary element;
step two: identifying the drawing stamp of the CAD drawing, searching the corresponding drawing number in the album catalog according to the drawing stamp number, and determining the information of the screen cabinet and the device to which the CAD drawing belongs;
step three: automatically scaling the drawing to a preset proportion, setting the size of an identification area frame, automatically adjusting the size of the identification area frame, identifying various elements in the CAD drawing, carrying out shape matching on the identification area frame according to the shape and characteristics of each element in a secondary element identification primitive library, and identifying the figure consistent with the primitives in the secondary element identification primitive library as a secondary element;
step four: acquiring attribute information of picked secondary elements, wherein the attributes of the secondary elements comprise secondary devices, secondary screen cabinets, secondary element names and secondary element types to which the secondary elements belong, traversing the text content near the secondary elements according to the positions of the secondary elements, and screen cabinets or device information to which drawings belong, identifying secondary element graphs, and automatically acquiring the attribute information of the secondary elements;
step five: picking up each connecting line in the CAD drawing, acquiring secondary element connecting points connected by the connecting lines through coordinate positions of the head end and the tail end of the connecting lines, and acquiring a connecting relation between the elements by combining position coordinates of the identified secondary elements;
step six: picking up position coordinates and characters of a text box in the CAD graph, matching the position coordinates and the characters with position coordinates of the connecting line, thereby obtaining a corresponding relation between the text box and the connecting line, assigning the characters in the text box to function description attributes of the connecting line, and perfecting function identification of the connecting line;
step seven: repeating the second step to the sixth step to finish the identification of all CAD drawings, performing information integration on the connection information of all secondary elements according to the connection relation of the drawings, and performing loop verification on the connection relation of the secondary loops;
step eight: and outputting a file describing the connection relation of the secondary circuit of the transformer substation or an xml file in a standard format according to actual requirements.
Wherein the identified types of CAD drawings include: drawing catalog, secondary schematic diagram, front/back diagram of screen cabinet, device back board diagram, element wiring diagram, optical cable connection diagram or optical cable connection table, terminal row diagram.
The major types of secondary elements identified include: coil, contact, device, switch, air switch, winding, device, power supply, screen cabinet, terminal box, button, terminal, contact terminal, pressing plate, indicator light, black box type element and motor type element.
2. Visual display of secondary circuit of transformer substation
Importing and analyzing an SLCD file, selecting central equipment through a screen cabinet device list, automatically generating a secondary cable connection relation graph between the equipment, displaying the connection between other equipment related to the equipment, identifying the equipment name on the equipment, identifying the cable number on a connecting line, and mutually skipping the central equipment and the related equipment;
clicking the cable number of a screen cabinet to which the device belongs, and displaying loop connection between the two devices, wherein the loop connection comprises a loop number, loop description and a corresponding terminal row number;
and double clicking a certain loop number, taking positive electricity as a starting point and negative electricity as an end point, and displaying a piece of full loop information from the positive electricity to the negative electricity by the terminal row terminal, the air switch, the pressing plate and the device board card terminal.
3. Preset safety measure library principle
For the safety measure tickets for secondary overhaul and the safety measure tickets for secondary protection equipment modification, the safety measure tickets are generated by adopting comparison CAD drawings or comparing actual wiring terminals to a transformer substation site, after secondary system modeling, SLCD files contain the most comprehensive loop information and terminal information, corresponding safety measure tickets can be automatically generated according to certain rules, and related personnel can increase, decrease or modify the safety measure tickets on the basis, so that the generation efficiency of the safety measure tickets of the traditional transformer substation is greatly improved. In order to build a principle of a secondary safety measure library, various typical interval secondary safety measure tickets suitable for Guangxi Chong left 220kV golden horse transformers are obtained. And (4) arranging secondary safety measure tickets under typical lines/main transformers/bus couplers/buses of 220kV, 110kV and 10kV, and formulating the principle in a secondary safety measure library of the station according to various secondary safety measure tickets provided by users. Examples of specific safety measures are as follows:
(1) line protection secondary circuit safety measure
1) Checking the positions of all the change-over switches and the pressing plates on the protection screen and making a record;
2) checking equipment for bypass protection operation switched on the protection screen, and making error prevention measures for preventing equipment from being touched by mistake and switching a switch by mistake;
3) disconnecting the tripping pressure plate and the closing pressure plate on the protection screen;
4) checking the position of a voltage air switch behind the protection screen, protecting the position of a direct current switch, operating the position of the direct current switch, and recording;
5) disconnecting the voltage air switch and the voltage small bus to the upper terminal of the protection screen to prevent the voltage small bus from short circuit or grounding;
6) after the protection screen is disconnected, the current secondary circuit is disconnected, if the switch is in operation, the outer side of the current secondary circuit on the terminal block must be in short circuit and well grounded, and then the current terminal can be opened, so that the secondary circuit of the current transformer is prevented from being opened;
7) a start loop is cut off to a bus error failure mode, and insulation measures are taken at the wire ends to prevent false start;
8) the protection is cut off to a wave recording starting loop, and insulation measures are taken at the wire head to prevent the wave recorder from being started by mistake;
9) the positive signal power supply on the protection screen is disconnected, and insulation measures are taken at the wire ends to prevent interference with operators after signal transmission;
10) and putting into service and maintenance of the pressing plate.
(2) Safety measure for secondary circuit of main transformer protection screen
1) Checking the positions of all the change-over switches, the current change-over terminals and the pressing plates on the protection screen, and recording the positions;
2) checking the positions of a voltage air switch, a protection direct current switch and an operation power supply behind the protection screen, and recording;
3) disconnecting a tripping pressure plate on the protection screen, particularly a tripping bypass and bus connection pressure plate, and making a mistake prevention measure to prevent a mistake tripping;
4) disconnecting the voltage air switch and the small voltage bus (bus and bypass) to the upper terminal of the protection screen to prevent the voltage secondary circuit from being short-circuited or grounded;
5) disconnecting the current secondary loop terminal on the protection screen, and if the current secondary loop needs to be in short circuit and be well grounded on the outer side of the terminal row in the operation (the local side and the bypass), preventing the current secondary loop from being opened and disconnecting the grounding point of the differential protection current secondary loop;
6) disconnecting the bus differential fault flexible starting circuit, removing a bus differential voltage locking circuit by a main transformer, and performing an insulation measure on a wire end to prevent the bus differential circuit from being started by mistake;
7) the protective starting wave recorder loop is disconnected, and insulation measures are taken at the wire ends to prevent the wave recorder from being started by mistake;
8) the positive signal power supply on the protection screen is disconnected, and the wire ends are insulated to prevent interference with operators after signal transmission;
9) and putting into service and maintenance of the pressing plate.
(3) Safety measure for secondary circuit of busbar differential protection screen
1) Checking the positions of all the change-over switches and the pressing plates on the protection screen, and making a record;
2) checking and disconnecting all the tripping press plates, and making anti-error tripping measures;
3) checking the positions of the operating direct-current switch on the voltage air switch, the direct-current switch and the bus-tie operation control screen behind the protection screen, and recording;
4) an SD terminal in the mother difference large-current switching screen is detected to be short-circuited to the CT side and grounded;
5) disconnecting the voltage air switch and the small voltage bus to the upper terminal of the protection screen to prevent the voltage loop from being short-circuited or grounded;
6) the protective starting wave recorder loop is disconnected, and insulation measures are taken at the wire ends to prevent the wave recorder from being started by mistake;
7) the positive signal power supply on the protection screen is disconnected, and the wire ends are insulated to prevent interference with operators after signal transmission;
8) and putting into service and maintenance of the pressing plate.
The method for automatically generating the secondary circuit safety measure ticket is integrated in a transformer substation secondary circuit visualization system, the secondary safety measure ticket automatic generation function is selected, after an SLCD file (secondary circuit model file) is imported, one device is selected as a target, and software automatically identifies the external connection relation of the device by taking the device as a center. The user on the software interface can see the external loop which is connected with the target device as the center, and the user can open the loop to see the pressing plate, the air switch and other elements which are related to the loop in detail. Because the software presets the customized safety measure library principle, the circuit connected with the outside is disconnected by taking the customized safety measure library as the principle, and a secondary safety measure ticket is automatically generated. The embodiment finally issues the automatically generated secondary safety measure ticket, the user compares the safety measure ticket made by the user with the automatically generated secondary safety measure ticket, and the user judges whether the safety measure ticket made by the user is correct.
4. Secondary safety measure ticket concrete execution process
As shown in fig. 4, the mobile terminal is held by hand to enter the safety measure execution function, and the number, the function, the screen cabinet position, the terminal position and the secondary line number of the circuit connection wires needing to be disconnected can be displayed in detail by contrasting the automatically generated secondary safety measure ticket.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A transformer substation secondary circuit safety measure ticket automatic generation method is characterized in that a secondary circuit connection description file SLCD between total station screen cabinets is imported, a certain device is selected as a target, the external connection relation of the device is automatically identified by taking the device as a center, a circuit connected with the outside is disconnected according to a preset safety measure library principle, and a secondary safety measure ticket is automatically generated.
2. The method for automatically generating the safety measure ticket of the secondary circuit of the transformer substation according to claim 1, wherein the generation process of the secondary circuit connection description file between the total station cabinets comprises:
constructing a transformer substation secondary loop information model;
and automatically identifying the CAD drawing of the secondary circuit of the transformer substation through CAD image identification software, acquiring character information and connection relation information in the drawing, writing the character information and the connection relation information into corresponding attributes according to the definition of the information model of the secondary circuit of the transformer substation, and forming a total station SLCD file.
3. The automatic generation method of the safety measure ticket of the SubStation secondary circuit according to claim 2, characterized in that the SubStation secondary circuit information model comprises a station element, the station element is composed of a plurality of Region elements and a plurality of Cable elements, and the Region element is composed of a plurality of client elements; the SubStation element represents the SubStation information to which the model belongs; the Region element represents a cell in the power station, and is divided into an indoor cell and an outdoor cell; the Cubicle element is a screen cabinet in the secondary loop; cable elements represent cables or optical cables among the cabinets, and the Cable elements comprise a plurality of Cable Core elements Wire and a plurality of optical Cable Core elements Core.
4. The automatic generation method of the safety measure ticket of the secondary circuit of the transformer substation according to claim 3, wherein the attributes of the cables or optical cables among the cubicles include the serial numbers of the cables or optical cables among the cubicles, the names of the cubicles at one end of the cables or optical cables connected among the cubicles and the names of the cubicles at the other end of the cables or optical cables connected among the cubicles, wherein the Cubiclex A and the Cubiclex B are reference paths of the cubicles in the corresponding cubicles;
the attributes of the cable core element Wire comprise a cable core number, a terminal number TerminalA of the cable core and a terminal number TerminalB of the cable core;
the attributes of the Core element of the optical cable include an optical cable Core number, one end point number PortA of the optical cable Core and the other end point number PortB of the optical cable Core;
the inCore is used for representing the optical fiber connection in the screen cabinets, and the Core is used for representing the optical cable connection between the screen cabinets.
5. The automatic generation method of the transformer substation secondary circuit safety measure ticket according to claim 2, characterized in that the transformer substation secondary circuit CAD drawing is automatically identified through CAD image identifying software to obtain text information and connection relation information in the drawing, and the method comprises the following steps:
the method comprises the following steps: establishing a secondary element identification primitive library, formulating and identifying the type of the secondary element, and establishing a standard primitive of each secondary element according to the type of the identified secondary element for the basis of subsequent identification of the secondary element;
step two: identifying the drawing stamp of the CAD drawing, searching the corresponding drawing number in the album catalog according to the drawing stamp number, and determining the information of the screen cabinet and the device to which the CAD drawing belongs;
step three: automatically scaling the drawing to a preset proportion, setting the size of an identification area frame, automatically adjusting the size of the identification area frame, identifying various elements in the CAD drawing, carrying out shape matching on the identification area frame according to the shape and characteristics of each element in a secondary element identification primitive library, and identifying the figure consistent with the primitives in the secondary element identification primitive library as a secondary element;
step four: acquiring attribute information of picked secondary elements, wherein the attributes of the secondary elements comprise secondary devices, secondary screen cabinets, secondary element names and secondary element types to which the secondary elements belong, traversing the text content near the secondary elements according to the positions of the secondary elements, and screen cabinets or device information to which drawings belong, identifying secondary element graphs, and automatically acquiring the attribute information of the secondary elements;
step five: picking up each connecting line in the CAD drawing, acquiring secondary element connecting points connected by the connecting lines through coordinate positions of the head end and the tail end of the connecting lines, and acquiring a connecting relation between the elements by combining position coordinates of the identified secondary elements;
step six: picking up position coordinates and characters of a text box in the CAD graph, matching the position coordinates and the characters with position coordinates of the connecting line, thereby obtaining a corresponding relation between the text box and the connecting line, assigning the characters in the text box to function description attributes of the connecting line, and perfecting function identification of the connecting line;
step seven: repeating the second step to the sixth step to finish the identification of all CAD drawings, performing information integration on the connection information of all secondary elements according to the connection relation of the drawings, and performing loop verification on the connection relation of the secondary loops;
step eight: and outputting a file describing the connection relation of the secondary circuit of the transformer substation or an xml file in a standard format according to actual requirements.
6. The automatic generation method of the safety measure ticket of the secondary circuit of the transformer substation according to claim 1, characterized by further comprising a safety measure ticket checking process in which a user compares the safety measure ticket made by the user with the secondary safety measure ticket automatically generated by the system and judges whether the safety measure ticket made by the user is correct.
7. The automatic generation method of the safety measure ticket of the secondary circuit of the transformer substation according to claim 1, wherein the secondary safety measure execution process is as follows:
the safety measure execution function is entered through the handheld mobile terminal, and the number, the function, the screen cabinet position, the terminal position and the secondary line number of the loop connection wires needing to be disconnected are displayed by contrasting with the automatically generated secondary safety measure ticket.
8. The automatic generation method of the safety measure ticket of the secondary circuit of the transformer substation according to claim 1, wherein the pre-customized safety measure library principle comprises:
line protection secondary circuit safety measure
1) Checking the positions of all the change-over switches and the pressing plates on the protection screen;
2) checking equipment for bypass protection operation switched on the protection screen, and making error prevention measures for preventing equipment from being touched by mistake and switching a switch by mistake;
3) disconnecting the tripping pressure plate and the closing pressure plate on the protection screen;
4) checking the position of a voltage air switch behind the protection screen, the position of a protection direct current switch and the position of an operation direct current switch;
5) disconnecting the voltage air switch and the voltage small bus to the upper terminal of the protection screen;
6) after the protection screen is disconnected, the current secondary circuit is disconnected, if the switch is in operation, the outer side of the current secondary circuit on the terminal block must be short-circuited and grounded well, and then the current terminal can be opened;
7) a circuit is started after the bus fault is cut off, and insulation measures are taken by the line head;
8) the protection is cut off to a wave recording starting circuit, and the wire end is taken as an insulation measure;
9) disconnecting a positive signal power supply on the protection screen, and taking insulation measures by using a wire end;
10) and putting into service and maintenance of the pressing plate.
9. The automatic generation method of the safety measure ticket of the secondary circuit of the transformer substation according to claim 1, wherein the pre-customized safety measure library principle comprises:
safety measure for secondary circuit of main transformer protection screen
1) Checking the positions of all the change-over switches, the current change-over terminals and the pressing plates on the protection screen;
2) checking the positions of a voltage air switch, a protection direct current switch and an operation power supply behind the protection screen;
3) disconnecting the tripping pressure plate, the tripping bypass and the bus coupler pressure plate on the protection screen;
4) disconnecting the voltage air switch and the voltage small bus to the upper terminal of the protection screen;
5) disconnecting a current secondary loop terminal on the protection screen, if the current secondary loop is in operation, short-circuiting and grounding the outer side of the terminal row, and disconnecting a grounding point of the differential protection current secondary loop;
6) disconnecting the bus differential failure starting circuit, removing a bus differential voltage locking circuit by a main transformer, and taking an insulation measure by a line head;
7) disconnecting the protective starting wave recorder loop, and taking an insulation measure at the end of the line;
8) disconnecting a positive signal power supply on the protection screen, and taking an insulation measure at a wire end;
9) and putting into service and maintenance of the pressing plate.
10. The automatic generation method of the safety measure ticket of the secondary circuit of the transformer substation according to claim 1, wherein the pre-customized safety measure library principle comprises:
safety measure for secondary circuit of busbar differential protection screen
1) Checking the positions of all the change-over switches and the pressing plates on the protection screen;
2) checking and disconnecting all tripping press plates;
3) checking the positions of an operation direct current switch on a voltage air switch, a direct current switch and a bus-tie operation control screen behind the protection screen;
4) an SD terminal in the mother difference large-current switching screen is detected to be short-circuited to the CT side and grounded;
5) disconnecting the voltage air switch and the voltage small bus to the upper terminal of the protection screen;
6) disconnecting the protective starting wave recorder loop, and taking an insulation measure at the end of the line;
7) disconnecting a positive signal power supply on the protection screen, and taking an insulation measure at a wire end;
8) and putting into service and maintenance of the pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111364885.XA CN114067348A (en) | 2021-11-17 | 2021-11-17 | Automatic generation method for security measure ticket of secondary circuit of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111364885.XA CN114067348A (en) | 2021-11-17 | 2021-11-17 | Automatic generation method for security measure ticket of secondary circuit of transformer substation |
Publications (1)
| Publication Number | Publication Date |
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| CN114067348A true CN114067348A (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111364885.XA Pending CN114067348A (en) | 2021-11-17 | 2021-11-17 | Automatic generation method for security measure ticket of secondary circuit of transformer substation |
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| Country | Link |
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| CN (1) | CN114067348A (en) |
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