CN114187811A - Power cable intelligent operation and maintenance sand table simulation system, simulation method, equipment and medium - Google Patents
Power cable intelligent operation and maintenance sand table simulation system, simulation method, equipment and medium Download PDFInfo
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- G—PHYSICS
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- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00019—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using optical means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
- H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention provides a power cable intelligent operation and maintenance sand table simulation system, a simulation method, equipment and a medium, wherein the system comprises: the system comprises a sand table, outdoor cable terminals respectively arranged at two ends of the sand table, at least two switching cabinets arranged between the outdoor cable terminals, and a cable arrangement area arranged below the sand table; the outdoor cable terminal is used for connecting detection equipment; the switching cabinet is used for switching the length of the miniature cable and the defect short sample; the cable arrangement area is provided with a plurality of miniature cables, and the miniature cables are used for connecting the outdoor cable terminal and the switching cabinet. The sand table simulation system provided by the invention has the advantages of small investment, good flexibility, convenience in operation, wide adaptive scene and the like, and the problems of intelligent operation and maintenance equipment training of power cable lines of basic operation and maintenance personnel and quality control of intelligent operation and maintenance devices can be solved based on the system and the corresponding simulation method, so that the convenience and reliability of power cable operation and maintenance simulation are further improved.
Description
Technical Field
The invention relates to the technical field of cable system testing, in particular to a power cable intelligent operation and maintenance sand table simulation system, a simulation method, equipment and a medium.
Background
The power cable is a key device for connecting a power plant, a transformer substation, power supply and distribution equipment and power users in a power industry system into an organic whole, and whether the power cable can normally operate or not directly influences whether the whole power industry system can normally and stably operate or not. However, the power cable is easily affected by abnormal events such as overload, overvoltage, internal insulation aging, natural environment and the like in the actual operation process, so that the power cable is strongly necessary for abnormality detection, and meanwhile, the construction of the power cable intelligent operation and maintenance simulation system and the verification of corresponding functions become necessary key skills of each intelligent operation and maintenance worker. A conventional power cable intelligent operation and maintenance simulation system generally adopts a real power cable, the real laying environment of the simulation power cable is actually laid, a certain number of defect points are arranged in a simulation circuit and used for personnel training and equipment function verification of power cable intelligent operation and maintenance equipment, namely, the power cable intelligent operation and maintenance simulation system is built according to the actual circuit by adopting the real power cable, a corresponding intelligent operation and maintenance device is installed in a circuit by presetting the defects of the cable and accessories, and corresponding voltage is applied at a cable terminal by adopting pressurization equipment such as power frequency, frequency conversion and oscillation waves and used for executing personnel training and equipment function verification of the intelligent operation and maintenance device. However, the main insulation of the cable is simply damaged on the actual cable, and the method for artificially manufacturing the fault point is used for cable fault detection training and examination, so that a lot of field difficulties are brought to the training work of fault testing due to the fact that the fault property and the distance are fixed and single, and the fault property slowly changes unpredictably along with time and irregular discharge, such as factors of high resistance change, low resistance change, disconnection and the like.
Although more and more digital intelligent means are put into use in the operation and maintenance work of the power transmission and transformation equipment along with the advance of digital transformation in the production field of power grid companies, the problems can be solved to a certain extent, the use of a large number of intelligent operation and maintenance means and new technologies puts forward higher requirements which are not easy to meet for the level of basic operation and maintenance personnel: on one hand, the digital equipment is various in types and high in technical principle, and operation and maintenance personnel need to master the operation and maintenance requirement on a certain theoretical basis; on the other hand, the mastering of new technology of new equipment needs a great deal of experience accumulation, and a lot of basic level units lack similar operation and maintenance platforms, so that the experience accumulation is difficult. In addition, the quality levels of the digital intelligent operation and maintenance equipment in the current market are different, a large amount of extra work is added for the use and the equipment maintenance of operation and maintenance personnel, and some intelligent monitoring devices are similar to a virtual device and do not play a real intelligent operation and maintenance role.
Therefore, it is urgently needed to provide an intelligent operation and maintenance system for power cables, which has the advantages of small investment, good flexibility, convenient operation, wide adaptation scene and the like, so as to effectively solve the difficult problems of training of intelligent operation and maintenance equipment for power cable lines of operation and maintenance personnel at the basic level and quality control of the intelligent operation and maintenance system, and improve the convenience and reliability of actual operation and maintenance simulation of power cables.
Disclosure of Invention
The invention aims to provide a power cable intelligent operation and maintenance sand table simulation system, a simulation method, equipment and a medium, wherein a novel cable with a miniature full structure is adopted, and a simulation sand table technology is combined to construct a set of intelligent operation and maintenance sand table simulation system which can completely simulate a real cable laying site, can be arranged indoors and has wide application scenes, so that the cables in the system can be ensured to be truly pressurized, the volume of the simulation system can be reduced, the investment cost is reduced, the panoramic topological structure of the power cable is visually presented, and the system is suitable for batch construction; in addition, by means of the matched multi-terminal remote control intelligent switching device, the length of the cable is switched according to actual requirements, key parameters such as defect types and defect positions are changed, operation and maintenance faults are effectively simulated and simulated by adopting a corresponding operation and maintenance simulation method, the problems of intelligent operation and maintenance equipment training of power cable lines of primary operation and maintenance personnel and quality control of an intelligent operation and maintenance system are effectively solved, and convenience and reliability of actual power cable operation and maintenance simulation are improved.
In order to achieve the above object, it is necessary to provide a power cable intelligent operation and maintenance sand table simulation system, a simulation method, a computer device and a storage medium for solving the above technical problems.
In a first aspect, an embodiment of the present invention provides a power cable intelligent operation and maintenance sand table simulation system, where the system includes a sand table, outdoor cable terminals respectively disposed at two ends of the sand table, at least two switching cabinets disposed between the outdoor cable terminals, and a cable arrangement area disposed under the sand table;
the outdoor cable terminal is used for connecting detection equipment;
the switching cabinet is used for switching the length of the miniature cable and the defect short sample;
the cable arrangement area is provided with a plurality of miniature cables, and the miniature cables are used for connecting the outdoor cable terminal and the switching cabinet.
Further, the detection equipment comprises cable core detection equipment and shielding layer detection equipment;
the cable core detection equipment comprises at least one of oscillatory wave partial discharge measurement equipment, a variable frequency series resonance test device, an ultralow frequency dielectric loss detection instrument, power frequency withstand voltage test equipment and a cable fault flash detector;
the shielding layer detection equipment comprises at least one of partial discharge detection equipment, grounding loop current detection equipment and online fault detection equipment.
Further, the switch cabinet comprises a cable length switch device, a defect short sample switch device and a defect short sample;
the cable length switching device is used for switching the length of the miniature cable between the outdoor cable terminals;
the defect short sample switching device is used for executing the connection or disconnection of the defect short sample;
the defect short samples comprise cable fault defect short samples and cable partial discharge defect short samples.
Furthermore, the cable length switching device comprises a cable length switching switch, a first WIFI processor, a first photoelectric isolation module, a first action device and a first state feedback device;
the cable length switch is used for switching the miniature cables with different lengths to access the system circuit;
the first WIFI processor is used for receiving a first switching signal of a control terminal, controlling the first action device to drive the cable length switch to execute a switching action through the first photoelectric isolation module according to the first switching signal, acquiring a first state feedback value of the first state feedback device and sending the first state feedback value to the control terminal;
the first photoelectric isolation module comprises a photoelectric coupler and a miniature photoelectric sensor; the photoelectric coupler is used for controlling the first action device according to the first switching signal; the miniature photoelectric sensor is used for collecting the first state feedback numerical value fed back by the first state feedback device and transmitting the first state feedback numerical value to the first WIFI processor;
the first state feedback device is used for acquiring the position state of the cable length change-over switch and generating the first state feedback value according to the position state.
Further, the cable length change-over switch comprises an insulating connecting rod and a metal connecting rod which are sequentially connected with the first action device, and a plurality of corona-free contacts sleeved on the insulating connecting rod and the metal connecting rod; the corona-free contact is used for connecting the corresponding miniature cable and is connected with the metal connecting rod by rotating the first action device.
Further, the defect short sample switching device comprises a many-to-one partial discharge-free switch, a second WIFI processor, a second photoelectric isolation module, a second action device, a second state feedback device and an analog line;
the many-to-one partial discharge-free switching is used for switching the connection between the analog line and the defect short sample;
the second WIFI processor is used for receiving a second switching signal of the control terminal, communicating with the control terminal, controlling the second action device to drive the many-to-one partial discharge-free change-over switch to execute a switching action through the second photoelectric isolation module according to the second switching signal, acquiring a second state feedback value of the second state feedback device and sending the second state feedback value to the control terminal;
the second photoelectric isolation module comprises a photoelectric coupler and a miniature photoelectric sensor; the photoelectric coupler is used for controlling the second action device according to the second switching signal; the miniature photoelectric sensor is used for collecting the second state feedback value fed back by the second state feedback device and transmitting the second state feedback value to the second WIFI processor;
the second state feedback device is used for acquiring the position state of the many-to-one partial discharge-free selector switch and generating the second state feedback value according to the position state.
Further, the many-to-one non-partial-discharge change-over switch comprises a transmission conversion gear, an insulating connecting rod, a change-over turntable, a non-partial-discharge contact, a high-voltage-end metal connecting rod, a defect short sample joint and a grounding-end metal connecting rod, wherein the transmission conversion gear, the insulating connecting rod and the change-over turntable are sequentially connected with the second action device;
the defect short sample connector is used for being connected with the analog circuit arranged in the middle of the switching turntable, and controlling the transmission conversion gear to drive the insulating connecting rod and the switching turntable to rotate through the second action device, so that any non-partial discharge contact arranged below the switching turntable is connected with the high-voltage end metal connecting rod;
the high-voltage end metal connecting rod is used for connecting the analog circuit arranged in the middle of the switching turntable to any non-partial discharge contact arranged below the switching turntable;
and the grounding end metal connecting rod is used for connecting a non-partial discharge contact which is not connected with the analog circuit.
In a second aspect, an embodiment of the present invention provides a power cable intelligent operation and maintenance sand table simulation method for a power cable intelligent operation and maintenance sand table simulation system according to any one of claims 1 to 7, where the method includes the following steps:
establishing communication connection with a control terminal in advance;
receiving a switching signal of the control terminal; the switching signal comprises at least one of a first switching signal and a second switching signal; the second switching signal comprises at least one of a fault defect short sample switching signal and a partial discharge defect short sample switching signal;
judging whether the switching signal contains the first switching signal or not, if so, acquiring the length of a line to be switched, and executing switching action through a cable length switching device of a switching cabinet according to the length of the line to be switched;
judging whether the switching signal contains the second switching signal, if so, acquiring a corresponding short sample of the defect to be switched according to the type of the second switching signal, and executing a switching action through a defect short sample switching device of a switch cabinet according to the short sample of the defect to be switched; the short sample of the defect to be switched comprises at least one of a short sample of the defect of the cable fault and a short sample of the defect of the cable partial discharge;
responding to the completion of the switching action execution corresponding to the first switching signal and the second switching signal, accessing the detection equipment and the intelligent operation and maintenance device according to the intelligent operation and maintenance simulation requirement, and executing corresponding operation and maintenance simulation.
In a third aspect, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method when executing the computer program.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the above method.
The application provides a power cable intelligence fortune dimension sand table simulation system, simulation method, computer equipment and storage medium, through providing including the sand table, locate respectively sand table both ends connect the outdoor cable terminal of check out test set, locate be used for switching over two at least switch over the cabinet to miniature cable length and defect short sample between the outdoor cable terminal to and locate the sand table under be equipped with many be used for connecting the cable arrangement district of the miniature cable of outdoor cable terminal and switch over the cabinet, have invest in little, the flexibility is good, be convenient for operation, and adapt to the scene advantage intelligent fortune dimension system and the corresponding simulation method extensively etc.. Compared with the prior art, the method can effectively solve the problems of training of intelligent operation and maintenance equipment of the power cable line of the primary operation and maintenance personnel and quality control of the intelligent operation and maintenance device, and further improves the convenience and reliability of actual power cable operation and maintenance simulation.
Drawings
Fig. 1 is a schematic structural diagram of a power cable intelligent operation and maintenance sand table simulation system in the embodiment of the invention;
FIG. 2 is a schematic structural diagram of a miniature cable according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a switch cabinet according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the cable length switching device in the switch cabinet of FIG. 3;
fig. 5 is a schematic view of a cable length switch of the cable length switching apparatus of fig. 4;
FIG. 6 is a schematic diagram of an application scenario of the cable length switching apparatus according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of a defective short sample switching device in the switch cabinet of FIG. 3;
FIG. 8 is a schematic diagram of a defective short sample switching device in the switch cabinet of FIG. 3;
FIG. 9 is a schematic diagram of a many-to-one non-partial discharge switch in the defect short sample switching device of FIG. 8;
FIG. 10 is a schematic flow chart of a simulation method of a power cable intelligent operation and maintenance sand table according to an embodiment of the present invention;
fig. 11 is an internal structural diagram of a computer device in the embodiment of the present invention.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments, and it is obvious that the embodiments described below are part of the embodiments of the present invention, and are used for illustrating the present invention only, but not for limiting the scope of the present invention. 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.
The invention provides a power cable intelligent operation and maintenance sand table simulation system shown in fig. 1, which is characterized in that a set of intelligent operation and maintenance simulation sand table device capable of completely simulating the operation of a power cable on a real cable laying site is built by adopting a novel cable (namely a miniature cable) with a miniature full-size structure shown in fig. 2 and combining a simulation sand table technology. The system adopts a novel miniature cable, so that not only can the real pressurization be supported, but also the volume of the system device is reduced, and the investment cost is greatly reduced; meanwhile, due to the adoption of the sand table type design, the system device not only can visually present the panoramic topological structure of the power cable, but also is not limited in arrangement scene, can be assembled indoors and outdoors at any time, is not influenced by weather when being arranged indoors, can run in all weather, has good application effect, supports random moving and is suitable for batch construction; in addition, the switching cabinet of accessible control terminal remote control that this system device is supporting realizes switching cable length as required according to actual simulation requirement, changes key parameters such as defect kind, defect position and carries out intelligence switching in order to support corresponding simulation experiment, has effectively promoted the convenience and the reliability of power cable intelligence fortune dimension emulation. The following embodiments will describe the power cable intelligent operation and maintenance sand table simulation system and the corresponding operation and maintenance method in detail.
In one embodiment, as shown in fig. 1, a power cable intelligent operation and maintenance sand table simulation system is provided, the system includes a sand table 1, outdoor cable terminals 2 respectively disposed at two ends of the sand table, at least two switch cabinets 3 disposed between the outdoor cable terminals, and a cable arrangement area disposed under the sand table;
the outdoor cable terminal 2 is used for connecting detection equipment;
the switching cabinet 3 is used for switching the length of the miniature cable and the defect short sample;
the cable arrangement area is provided with a plurality of miniature cables 4, and the miniature cables are used for connecting the outdoor cable terminal 2 and the switch cabinet 3.
The structure of the miniature cable 4 is shown in fig. 2, the corresponding scaling method can be scaled according to actual requirements in principle, the preferred scaling method in this embodiment is not scaling in the same scale, but the main insulation 43 is properly reduced to a size that can ensure real pressurization and no partial discharge according to application requirements, if the peak value of 30kV alternating voltage is met, the thickness of the main insulation can be reduced to about 2.5-3mm, the conductor 41 is correspondingly reduced to a large extent, the cross section is kept to be 4-10 square millimeters, meanwhile, the thicknesses of the inner semi-conductive shielding layer 42, the outer semi-conductive shielding layer 44, the copper wire shielding layer 45 and the outer sheath 46 can be kept unchanged, and only the corresponding adjustment is needed to be performed according to the set sizes of the main insulation 43 and the conductor 41. It should be noted that the above-mentioned relevant dimensional values of the internal structure of the miniature cable 4 are only exemplary descriptions, and do not limit the specific protection scope.
The detection equipment connected with the outdoor cable terminal 2 is selectively accessed to one or more detection equipment according to the requirements of actual operation and maintenance simulation. The detection device in this embodiment is not shown in the schematic structural diagram of the intelligent operation and maintenance sand table simulation system for the power cable, and mainly includes a cable core detection device and a shielding layer detection device; the cable core detection equipment mainly comprises at least one of oscillatory wave partial discharge measurement equipment, a variable frequency series resonance test device, an ultralow frequency dielectric loss detection instrument, power frequency withstand voltage test equipment and a cable fault flash detector; the shielding layer detection equipment comprises at least one of partial discharge detection equipment, grounding loop current detection equipment and online fault detection equipment. Specifically, when the system device is built, whether the cable core detection equipment and the shielding layer detection equipment are accessed or not can be determined according to requirements, and meanwhile, the specific types and the number of the cable core detection equipment and the shielding layer detection equipment which need to be accessed can be selected according to requirements. In addition, the outdoor cable terminal 2 can be preferably a plug-in type intermediate joint, and is convenient to connect and use on the basis of ensuring that the requirement of the corresponding alternating voltage peak value is met.
In one embodiment, as shown in fig. 3, the switch cabinet 3 mainly comprises a switch cabinet comprising a cable length switching device 31, a defect short pattern switching device 32 and a defect short pattern 33. Wherein, the cable length switching device 31 is used for switching the length of the miniature cable between the outdoor cable terminals; a defect short sample switching device 32 for performing the access or disconnection of the defect short sample.
Specifically, as shown in fig. 4, the cable length switching device 31 mainly includes a cable length switch 3101, a first WIFI processor 3102, a first optoelectronic isolation module 3103, a first action device 3104 and a first state feedback device 3105; the first action device 3104 and the first state feedback device 3105 are connected to the first WIFI processor 3102 through a first photo-isolation module 3103.
The cable length switch 3101 is used for switching the miniature cables with different lengths to access the system line;
as shown in fig. 5, the cable length switch 3101 mainly includes an insulating link 3109 and a metal link 3110 connected in sequence to the first actuator 3104, and a plurality of corona-free contacts 3111 fitted around the insulating link 3109 and the metal link 3110; the non-corona contact 3111 is used for connecting the corresponding miniature cable 4, and is connected to the metal link 3110 by rotating the first action device 3104. It should be noted that the first actuator 3104 and the insulating link 3109 form a telescopic rod similar to that in the motor, and the metal link 3110 is connected to different non-corona contacts 3111 through the extension and retraction of the telescopic rod to control the connection of different miniature cables, so as to adjust the length of the miniature cables in the system line.
The first WIFI processor 3102 is configured to receive a first switching signal of a control terminal, control the first action device 3104 to drive the cable length switch 3101 to perform a switching action through the first optoelectronic isolation module 3103 according to the first switching signal, and obtain a first state feedback value of the first state feedback device 3105 and send the first state feedback value to the control terminal;
the control terminal may be understood as a mobile phone, a tablet, or a computer, which can remotely control the cable length switching device 31 to perform the corresponding adjustment of the length of the miniature cable by transmitting the first switching signal. The first WIFI processor 3102 is connected to the cloud server through WIFI, and the cloud server controls the communication connection with the remote control terminal.
The first photoelectric isolation module 3103 includes a photocoupler and a micro photosensor; the photocoupler is used for controlling the first action device 3104 according to the first switching signal; the micro photoelectric sensor is configured to acquire the first state feedback value fed back by the first state feedback device 3105, and transmit the first state feedback value to the first WIFI processor 3102;
the first optoelectronic isolation module 3103 is mainly used to protect the first WIFI processor 3102 connected thereto from impact from the high voltage end, so as to improve stability of signal transmission.
The first state feedback device 3105 is configured to obtain a position state of the cable length switch 3101, and generate the first state feedback value according to the position state.
The first state feedback value mainly comprises values corresponding to an intermediate state and a full state respectively, wherein the intermediate state represents that the switch is in action, and the full state represents that the switch is full. The first state feedback device 3105 is configured such that the micro-photoelectric sensor feeds back the acquired first state feedback values corresponding to different switch states to the control terminal through the first WIFI processor 3102, and the control terminal learns the actual state of the current cable length switch 3101 according to the first state feedback values, and is configured to determine whether a corresponding switch indication (a first switching signal) needs to be given, and link with the first action device, so as to better implement the length adjustment of the miniature cable to meet the requirements of the simulation system.
As shown in fig. 6, the structural state of the cable length switching device 31 in the loop of the practical application power cable intelligent operation and maintenance sand table simulation system is as follows: the cable section I3106, the cable section II 3107, the cable section III 3108 and the cable section IV 3109 are miniature cables, the left and right cable length change-over switches can simultaneously select the cable section II 3107 or the cable section III 3108, and the length of the miniature cables can be changed by changing to the cable section II 3107 or the cable section III 3108. If the lengths of the cable sections I-IV in FIG. 6 are noted as L1-L4, respectively, byThe first action devices 3104 corresponding to the left and right cable length change-over switches 3101 are respectively driven, and the working states of the respective first action devices 3104 are respectively judged through the corresponding first state feedback devices 3105, so that the non-corona contact 3111 connected with different cable lines is contacted with the metal connecting rod 3110 by respectively rotating the first action devices 3104 in the two cable length change-over devices 31, if the metal connecting rod 3110 is contacted with the cable section II 3107 or the cable section III 3108 through adjustment, the length of the whole cable section can be switched between L1+ L2+ L4 and L1+ L3+ L4, and the safety performance is well ensured. It should be noted that the length of the switchable cable is only an exemplary description that two switch cabinets correspond to each other in the system, and the switchable length in the actual power cable intelligent operation and maintenance sand table simulation system is related to the number of actually equipped switch cabinets, and if there are two switch cabinets, there may be two length modes; when three switch cabinets exist, four length modes exist; when four switch cabinets are provided, eight length modes are provided; by analogy, when the number of switch cabinets in the system is n, the switchable length mode is 2n-1And (4) seed preparation.
Specifically, as shown in fig. 7, the defect short sample switching device 32 mainly includes a many-to-one no partial discharge switch 3201, a second WIFI processor 3202, a second photo isolation module 3203, a second action device 3204, a second state feedback device 3205 and an analog line 3206;
the many-to-one no partial discharge switch 3201 is configured to switch the connection between the analog line 3206 and the defect short pattern 33;
the type and number of the defect short samples 33 can be determined according to actual requirements, as shown in fig. 7, 6 types of defect short samples such as 3301-3306 are preset in the sand table simulation system, and the corresponding defect short samples 33 can be set in the corresponding simulation lines 3206 according to requirements in the actual simulation application. It should be noted that the number of defect short samples shown in fig. 7 is only an exemplary illustration, and no specific number is defined.
The second WIFI processor 3202 is configured to receive a second switching signal of the control terminal, communicate with the control terminal, control the second action device 3204 to drive the many-to-one no-partial-discharge switch 3201 to perform a switching action through the second photoelectric isolation module 3203 according to the second switching signal, and obtain a second state feedback value of the second state feedback device 3205 and send the second state feedback value to the control terminal;
the control terminal can be understood as a mobile phone, a tablet, or a computer, etc. capable of remotely controlling the defect short pattern switching device 32 to perform corresponding defect short pattern switching by transmitting the second switching signal. The second WIFI processor 3202 is connected to the cloud server through WIFI, and the cloud server controls communication connection with the remote control terminal. The second switching signal is corresponding to a corresponding defect short sample type and mainly comprises a fault defect short sample switching signal and a partial discharge defect short sample switching signal, the second WIFI processor 3202 identifies a defect short sample to be switched according to the content of the received second switching signal, and the second action device 3204 drives the many-to-one partial discharge-free switch 3201 to execute a corresponding switching action according to the defect short sample to be switched, so that a cable fault short sample or a cable partial discharge defect short sample required by a simulation experiment is accessed to a corresponding position of a simulation line of the sand table simulation system.
The second photoelectric isolation module 3203 includes a photoelectric coupler and a micro photoelectric sensor; the photocoupler is used for controlling the second action device 3204 according to the second switching signal; the micro photoelectric sensor is configured to collect the second state feedback value fed back by the second state feedback device 3205, and transmit the second state feedback value to the second WIFI processor 3202;
the second optoelectronic isolation module 3203 is mainly used for protecting the second WIFI processor 3202 connected thereto from impact from a high-voltage end, and improving stability of signal transmission.
The second state feedback device 3205 is configured to obtain a position state of the many-to-one no-partial-discharge changeover switch 3201, and generate the second state feedback value according to the position state.
The second state feedback value mainly comprises values corresponding to an intermediate state and a full state respectively, wherein the intermediate state represents that the switch is in action, and the full state represents that the switch is full. The second state feedback device 3205 micro photoelectric sensor feeds back the collected second state feedback values corresponding to different switch states to the control terminal through the second WIFI processor 3202, and the control terminal learns the actual states of the many-to-one partial discharge-free change-over switch 3201 according to the second state feedback values, so as to judge whether a corresponding switch indication (a second switching signal) needs to be given or not, and link with the second action device, thereby better realizing that different defect short samples are accessed to meet the requirements of the simulation system.
As shown in fig. 8 to 9, the many-to-one no partial discharge change-over switch 3201 mainly includes a transmission conversion gear 3207, an insulating connecting rod 3208 and a switching turntable 3209 which are sequentially connected to the second actuating device 3204, and a no partial discharge contact 3210, a high-voltage end metal connecting rod 3211, a defect short sample joint 3212 and a ground end metal connecting rod 3213 which are connected to the switching turntable 3209;
the defective short sample joint 3212 is configured to connect the analog line 3206 disposed in the middle of the switching turntable 3208, and control the transmission conversion gear 3207 to drive the insulating connecting rod 3208 and the switching turntable 3209 to rotate through the second actuating device 3204, so that any non-partial discharge contact 3210 disposed below the switching turntable 3209 is connected to the high-voltage end metal connecting rod 3211;
the high-voltage end metal connecting rod 3211 is configured to connect the analog line 3206 disposed in the middle of the switching turntable 3209 to any non-partial discharge contact 3210 disposed below the switching turntable 3209;
the ground metal connecting rod 3213 is configured to connect to a non-partial discharge contact 3210 that is not connected to the analog line 3206.
Specifically, as shown in fig. 8, the transmission conversion gear 3207, the insulating connecting rod 3208, the switching turntable 3209, the non-partial discharge contact 3210, the high-voltage end metal connecting rod 3211, the defective short sample joint 3212, the ground end metal connecting rod 3213, the switching turntable 3209, the second photo-electric isolation module 3203, the second actuating device 3204, and the second status feedback device 3205 are collectively disposed in the same area, the second actuating device 3204 drives the insulating connecting rod 3208 and the switching turntable 3209 to integrally rotate through the transmission conversion gear 3207, meanwhile, four non-partial discharge contacts 3210 are disposed under four virtual points corresponding to the switching turntable 3209, the analog line 3206 at the middle position of the switching turntable 3209 is connected to any non-partial discharge contact 3210 through the high-voltage end metal connecting rod 3211, and the remaining non-partial discharge contacts 3210 are connected by the ground end metal connecting rod 3213, so as to ensure that when the analog line 3206 is connected to any defective short sample joint 3212, the remaining defective short sample contacts are in a grounded state, the safety performance of the many-to-one non-partial discharge change-over switch 3201 is effectively ensured. It should be noted that the number and the position of the non-partial discharge contacts under the switching dial 3209 may be related to the number of defect short samples required by the actual application requirements.
In addition, in order to ensure the authenticity, safety and integrity of the actual intelligent operation simulation, a corresponding simulation environment and a fence 5 arranged on the periphery of the sand table can be arranged on the sand table of the system as required. Specifically, the simulated environment comprises at least one geographical environment which is scaled according to a preset proportion, for example, one or more of rivers, mountains, roads and the like which are actually laid by cables can be scaled down on a sand table according to the application requirements of actual users, and the geographical environment simulated by the sand table can be universal, namely, the geographical environment can be used on different sand tables, so that the same application effect can be achieved; meanwhile, the surrounding fence 5 around the sand table can be used as a boundary of the sand table and a safety fence, and the integrity and safety of the intelligent operation and maintenance sand table simulation system of the power cable are well guaranteed.
The intelligent operation and maintenance simulation sand table device which is constructed by combining the miniature cable with the simulation sand table technology and can completely simulate the operation of the power cable on a real cable laying site has the advantages of small size, small investment, good flexibility, convenience in operation, no influence of weather and use positions, wide adaptive scene and the like, the length of the cable can be switched according to actual simulation requirements, the defect types are changed, key parameters such as defect positions are intelligently switched to support corresponding simulation experiments, the convenience and reliability of intelligent operation and maintenance simulation of the power cable are effectively improved, and the problems of intelligent operation and maintenance equipment training of power cable lines of primary operation and maintenance personnel and quality control of the intelligent operation and maintenance device can be effectively solved.
In one embodiment, as shown in fig. 10, there is provided a power cable intelligent operation and maintenance sand table simulation method applied to a power cable intelligent operation and maintenance sand table simulation system, the method including the following steps:
s11, communication connection with the control terminal is established in advance;
s12, receiving a switching signal of the control terminal; the switching signal comprises at least one of a first switching signal and a second switching signal; the second switching signal comprises at least one of a fault defect short sample switching signal and a partial discharge defect short sample switching signal;
s13, judging whether the switching signal contains the first switching signal, if so, acquiring the length of the line to be switched, and executing switching action through a cable length switching device of a switching cabinet according to the length of the line to be switched;
s14, judging whether the switching signal contains the second switching signal, if so, acquiring a corresponding short sample of the defect to be switched according to the type of the second switching signal, and executing a switching action through a defect short sample switching device of a switching cabinet according to the short sample of the defect to be switched; the short sample of the defect to be switched comprises at least one of a short sample of the defect of the cable fault and a short sample of the defect of the cable partial discharge;
the identification sequence of the cable fault defect short sample and the cable partial discharge defect short sample in the second switching signal does not affect the simulation effect in principle, and the identification sequence is not particularly limited here.
And S15, responding to the completion of the switching action corresponding to the first switching signal and the second switching signal, accessing the detection equipment and the intelligent operation and maintenance device according to the requirements of the intelligent operation and maintenance simulation, and executing the corresponding operation and maintenance simulation.
Specifically, the power cable intelligent operation and maintenance sand table simulation method mainly comprises two stages of loop preparation and loop test; wherein, the return circuit prepares the stage and adopts wife to establish communication connection through control terminals such as high in the clouds server and cell-phone, panel or computer in advance, again according to the demand of specific intelligence fortune dimension emulation experiment, confirms whether need carry out corresponding cable length and switch with the short appearance of defect and switch to send first switching signal and second switching signal through control terminal and control respectively and switch the cabinet and carry out corresponding cable length and switch with the short appearance of defect and switch: when the control terminal sends a first switching signal containing the length of the cable to be switched to a cable length switching device of the switching cabinet, a first action device is controlled by a first photoelectric isolation module in the cable length switching device to drive a cable length switching switch to execute switching action of the length of the miniature cable; when the control terminal sends a second switching signal containing the defect short sample to be switched to the defect short sample switching device of the switching cabinet, a second action device is controlled by a second photoelectric isolation module in the defect short sample switching device to drive a multi-to-one partial discharge-free switching switch to execute the switching action of the cable fault defect short sample and/or the cable partial discharge defect short sample at the position required by the intelligent operation and maintenance device; in the loop test stage, after the cable length switching or defect short sample switching required by the experiment is switched according to the intelligent operation and maintenance simulation requirement, detection equipment is switched in outdoor cable terminals at two ends of the sand table system, and the related simulation experiment is carried out according to the test purpose and the requirement and the operation procedure of the accessed intelligent operation and maintenance device. It should be noted that, the types and the numbers of the accessed checking devices refer to the description of the foregoing system, and are not described herein again.
It should be noted that, although the steps in the above-described flowcharts are shown in sequence as indicated by arrows, the steps are not necessarily executed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise.
It should be noted that, for specific limitations of the power cable intelligent operation and maintenance sand table simulation method, reference may be made to the above limitations of the power cable intelligent operation and maintenance sand table simulation system, and details are not described herein again. All modules in the power cable intelligent operation and maintenance sand table simulation system can be completely or partially realized through software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
Fig. 11 shows an internal structure diagram of a computer device in one embodiment, and the computer device may specifically be a terminal or a server. As shown in fig. 11, the computer apparatus includes a processor, a memory, a network interface, a display, and an input device, which are connected through a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to realize the simulation method of the intelligent operation and maintenance sand table of the power cable. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those of ordinary skill in the art that the architecture shown in FIG. 11 is merely a block diagram of some of the structures associated with the present solution and is not intended to limit the computing devices to which the present solution may be applied, and that a particular computing device may include more or less components than those shown in the drawings, or may combine certain components, or have the same arrangement of components.
In one embodiment, a computer device is provided, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the steps of the above method being performed when the computer program is executed by the processor.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the above-mentioned method.
To sum up, the embodiment of the invention provides an intelligent operation and maintenance sand table simulation system, an operation and maintenance simulation method, a computer device and a storage medium for power cables, which comprises a sand table, outdoor cable terminals respectively arranged at two ends of the sand table and connected with detection devices, at least two switching cabinets arranged between the outdoor cable terminals and used for switching lengths and defect short samples of miniature cables, and a cable arrangement area arranged below the sand table and provided with a plurality of miniature cables used for connecting the outdoor cable terminals and the switching cabinets, and has the advantages of small investment, good flexibility, convenient operation, no influence from weather and use positions, wide adaptive scenes and the like, and can intelligently switch according to key parameters such as required switching cable lengths, defect types, defect positions and the like according to actual simulation requirements to support corresponding simulation experiments, and the corresponding simulation method, the simulation system not only can meet the requirements of intelligent operation and maintenance simulation of the power cable, but also can effectively solve the problems of intelligent operation and maintenance equipment training of power cable lines of basic operation and maintenance personnel and quality control of intelligent operation and maintenance devices, and further improves the convenience and reliability of actual power cable operation and maintenance simulation.
The embodiments in this specification are described in a progressive manner, and all the same or similar parts of the embodiments are directly referred to each other, and each embodiment is described with emphasis on differences from other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment. It should be noted that, the technical features of the embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express some preferred embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these should be construed as the protection scope of the present application. Therefore, the protection scope of the present patent shall be subject to the protection scope of the claims.
Claims (10)
1. A power cable intelligent operation and maintenance sand table simulation system is characterized by comprising a sand table, outdoor cable terminal heads respectively arranged at two ends of the sand table, at least two switching cabinets arranged between the outdoor cable terminal heads, and a cable arrangement area arranged below the sand table;
the outdoor cable terminal is used for connecting detection equipment;
the switching cabinet is used for switching the length of the miniature cable and the defect short sample;
the cable arrangement area is provided with a plurality of miniature cables, and the miniature cables are used for connecting the outdoor cable terminal and the switching cabinet.
2. The power cable intelligent operation and maintenance sand table simulation system of claim 1, wherein the detection equipment comprises cable core detection equipment and shielding layer detection equipment;
the cable core detection equipment comprises at least one of oscillatory wave partial discharge measurement equipment, a variable frequency series resonance test device, an ultralow frequency dielectric loss detection instrument, power frequency withstand voltage test equipment and a cable fault flash detector;
the shielding layer detection equipment comprises at least one of partial discharge detection equipment, grounding loop current detection equipment and online fault detection equipment.
3. The power cable intelligent operation and maintenance sand table simulation system of claim 1, wherein the switch cabinet comprises a cable length switch device, a defect short sample switch device and a defect short sample;
the cable length switching device is used for switching the length of the miniature cable between the outdoor cable terminals;
the defect short sample switching device is used for executing the connection or disconnection of the defect short sample;
the defect short samples comprise cable fault defect short samples and cable partial discharge defect short samples.
4. The power cable intelligent operation and maintenance sand table simulation system of claim 3, wherein the cable length switching device comprises a cable length switch, a first WIFI processor, a first photoelectric isolation module, a first action device and a first state feedback device;
the cable length switch is used for switching the miniature cables with different lengths to access the system circuit;
the first WIFI processor is used for receiving a first switching signal of a control terminal, controlling the first action device to drive the cable length switch to execute a switching action through the first photoelectric isolation module according to the first switching signal, acquiring a first state feedback value of the first state feedback device and sending the first state feedback value to the control terminal;
the first photoelectric isolation module comprises a photoelectric coupler and a miniature photoelectric sensor; the photoelectric coupler is used for controlling the first action device according to the first switching signal; the miniature photoelectric sensor is used for collecting the first state feedback numerical value fed back by the first state feedback device and transmitting the first state feedback numerical value to the first WIFI processor;
the first state feedback device is used for acquiring the position state of the cable length change-over switch and generating the first state feedback value according to the position state.
5. The power cable intelligent operation and maintenance sand table simulation system according to claim 4, wherein the cable length change-over switch comprises an insulating connecting rod and a metal connecting rod which are sequentially connected with the first action device, and a plurality of corona-free contacts sleeved on the insulating connecting rod and the metal connecting rod; the corona-free contact is used for connecting the corresponding miniature cable and is connected with the metal connecting rod by rotating the first action device.
6. The power cable intelligent operation and maintenance sand table simulation system of claim 3, wherein the defect short sample switching device comprises a many-to-one non-partial discharge switch, a second WIFI processor, a second photoelectric isolation module, a second action device, a second state feedback device and an analog line;
the many-to-one partial discharge-free switching is used for switching the connection between the analog line and the defect short sample;
the second WIFI processor is used for receiving a second switching signal of the control terminal, communicating with the control terminal, controlling the second action device to drive the many-to-one partial discharge-free change-over switch to execute a switching action through the second photoelectric isolation module according to the second switching signal, acquiring a second state feedback value of the second state feedback device and sending the second state feedback value to the control terminal;
the second photoelectric isolation module comprises a photoelectric coupler and a miniature photoelectric sensor; the photoelectric coupler is used for controlling the second action device according to the second switching signal; the miniature photoelectric sensor is used for collecting the second state feedback value fed back by the second state feedback device and transmitting the second state feedback value to the second WIFI processor;
the second state feedback device is used for acquiring the position state of the many-to-one partial discharge-free selector switch and generating the second state feedback value according to the position state.
7. The power cable intelligent operation and maintenance sand table simulation system according to claim 6, wherein the many-to-one non-partial discharge change-over switch comprises a transmission conversion gear, an insulating connecting rod and a change-over turntable which are sequentially connected with the second action device, and a non-partial discharge contact, a high-voltage end metal connecting rod, a defect short sample joint and a grounding end metal connecting rod which are connected with the change-over turntable;
the defect short sample connector is used for being connected with the analog circuit arranged in the middle of the switching turntable, and controlling the transmission conversion gear to drive the insulating connecting rod and the switching turntable to rotate through the second action device, so that any non-partial discharge contact arranged below the switching turntable is connected with the high-voltage end metal connecting rod;
the high-voltage end metal connecting rod is used for connecting the analog circuit arranged in the middle of the switching turntable to any non-partial discharge contact arranged below the switching turntable;
and the grounding end metal connecting rod is used for connecting a non-partial discharge contact which is not connected with the analog circuit.
8. A power cable intelligent operation and maintenance sand table simulation method for the power cable intelligent operation and maintenance sand table simulation system according to any one of claims 1 to 7, wherein the method comprises the following steps:
establishing communication connection with a control terminal in advance;
receiving a switching signal of the control terminal; the switching signal comprises at least one of a first switching signal and a second switching signal; the second switching signal comprises at least one of a fault defect short sample switching signal and a partial discharge defect short sample switching signal;
judging whether the switching signal contains the first switching signal or not, if so, acquiring the length of a line to be switched, and executing switching action through a cable length switching device of a switching cabinet according to the length of the line to be switched;
judging whether the switching signal contains the second switching signal, if so, acquiring a corresponding short sample of the defect to be switched according to the type of the second switching signal, and executing a switching action through a defect short sample switching device of a switch cabinet according to the short sample of the defect to be switched; the short sample of the defect to be switched comprises at least one of a short sample of the defect of the cable fault and a short sample of the defect of the cable partial discharge;
responding to the completion of the switching action execution corresponding to the first switching signal and the second switching signal, accessing the detection equipment and the intelligent operation and maintenance device according to the intelligent operation and maintenance simulation requirement, and executing corresponding operation and maintenance simulation.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method of claim 8 are performed when the computer program is executed by the processor.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method as claimed in claim 8.
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| CN202111315630.4A CN114187811A (en) | 2021-11-08 | 2021-11-08 | Power cable intelligent operation and maintenance sand table simulation system, simulation method, equipment and medium |
| PCT/CN2022/130593 WO2023078457A1 (en) | 2021-11-08 | 2022-11-08 | Sand table simulation system for intelligent operation and maintenance of power cable, simulation method, device and medium |
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| CN202111315630.4A CN114187811A (en) | 2021-11-08 | 2021-11-08 | Power cable intelligent operation and maintenance sand table simulation system, simulation method, equipment and medium |
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| WO2023078457A1 (en) * | 2021-11-08 | 2023-05-11 | 南方电网科学研究院有限责任公司 | Sand table simulation system for intelligent operation and maintenance of power cable, simulation method, device and medium |
| CN116722455A (en) * | 2023-08-10 | 2023-09-08 | 齐齐哈尔市君威节能科技有限公司 | Intelligent control voltage stabilizing filtering energy storage compensation capacity-increasing comprehensive electricity-saving transmitting cabinet |
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| WO2023078457A1 (en) * | 2021-11-08 | 2023-05-11 | 南方电网科学研究院有限责任公司 | Sand table simulation system for intelligent operation and maintenance of power cable, simulation method, device and medium |
| CN116722455A (en) * | 2023-08-10 | 2023-09-08 | 齐齐哈尔市君威节能科技有限公司 | Intelligent control voltage stabilizing filtering energy storage compensation capacity-increasing comprehensive electricity-saving transmitting cabinet |
| CN116722455B (en) * | 2023-08-10 | 2023-11-14 | 齐齐哈尔市君威节能科技有限公司 | Intelligent control voltage stabilizing filtering energy storage compensation capacity-increasing comprehensive electricity-saving transmitting cabinet |
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| WO2023078457A1 (en) | 2023-05-11 |
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