CN111864577A - Intelligent electrical cabinet - Google Patents
Intelligent electrical cabinet Download PDFInfo
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- CN111864577A CN111864577A CN202010732070.1A CN202010732070A CN111864577A CN 111864577 A CN111864577 A CN 111864577A CN 202010732070 A CN202010732070 A CN 202010732070A CN 111864577 A CN111864577 A CN 111864577A
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- 238000001514 detection method Methods 0.000 claims abstract description 75
- 238000007689 inspection Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims description 24
- 238000005086 pumping Methods 0.000 claims description 10
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 20
- 239000000243 solution Substances 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
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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
- H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
- H02J13/00002—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 monitoring
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides an intelligent electrical cabinet, which relates to the technical field of power supply application and comprises an electrical cabinet shell, electrical cabinet main body equipment, a fault processor, a controller, a display and a detection unit, wherein the electrical cabinet main body equipment, the fault processor, the controller, the display and the detection unit are arranged in the shell; the electrical cabinet main body equipment is used for controlling and protecting electrical equipment in the power supply and distribution process; the detection unit is used for detecting the voltage and the current of each device in the electrical cabinet main body equipment and respectively sending the detection results to the controller and the fault processor; the fault processor is used for inputting the detection result into the fault model to obtain a fault type and respectively sending the fault type to the controller and the display; the controller is used for uploading the detection result and the fault type to the server; the displayer is used for displaying the fault type, maintenance of the electrical cabinet can be achieved in the routing inspection process, and the cost of maintenance personnel is saved.
Description
Technical Field
The invention relates to the technical field of power distribution application, in particular to an intelligent electrical cabinet.
Background
In the power supply and distribution field of today, generally need to patrol and examine electrical equipment such as switch board, cubical switchboard to guarantee the normal operating of power supply and distribution. Meanwhile, the control center also needs to monitor electrical equipment such as a power distribution cabinet and a switch cabinet, and when the electrical equipment is monitored to break down, maintenance personnel are dispatched to overhaul. For electrical equipment, inspection and maintenance are required at the same time, and the cost of personnel and resources is high.
Disclosure of Invention
The invention aims to provide an intelligent electrical cabinet, which can realize maintenance of the electrical cabinet in the routing inspection process and save the cost of maintenance personnel.
In a first aspect, an embodiment provides an intelligent electrical cabinet, which includes an electrical cabinet housing, and electrical cabinet main body equipment, a fault processor, a controller, a display and a detection unit which are arranged inside the housing, wherein the electrical cabinet housing is plated with a color zinc layer;
the electrical cabinet main body equipment is connected with the detection unit and used for controlling and protecting electrical equipment in the power supply and distribution process;
the detection unit is respectively connected with the fault processor and the controller and is used for detecting each device in the main equipment of the electric cabinet and the voltage and current of the electric equipment, the temperature of a joint and a contact, the temperature of a cable joint and a switch static contact, switch load current, acquisition remote measurement, remote communication quantity, remote control quantity and state quantity of the electric equipment and respectively sending detection results to the controller and the fault processor, wherein the remote measurement comprises voltage, current, power grid frequency and working frequency of the oil pumping machine, the remote communication quantity comprises a starting switching quantity signal, a stopping switching quantity signal and a contactor state, the remote control quantity comprises circuit breaker completion, switching-on contactor operation and motor speed control, and the state quantity comprises oil pumping machine stroke frequency information data, oil output information data, water injection information data, Gas quantity information data, temperature information data and vibration information data;
the fault processor is connected with the controller and the display and used for inputting the detection result into a fault model to obtain a fault type and respectively sending the fault type to the controller and the display, wherein the fault type comprises the equipment type of the fault equipment and the position information of the fault equipment;
the controller is used for uploading the detection result and the fault type to a server;
and the display is used for displaying the fault type.
In an alternative embodiment, the electrical cabinet main body equipment comprises one or more of a circuit breaker, a reactive power meter, an electric energy meter, a change-over switch and a capacitor.
In an alternative embodiment, the detection unit comprises at least one current sensor, voltage sensor or power sensor arranged on the device to be detected; the detection unit is used for detecting the voltage of a switching-off coil, the voltage of a switching-on coil, the voltage of a control loop and the voltage of a switching-on electromagnet of the circuit breaker.
In an optional implementation manner, the multi-channel button switch remote controller further comprises a multi-channel button switch and a dual-system switch control unit, the dual-system switch control unit is connected with the controller, the dual-system switch control unit is connected with the multi-channel button switch, the dual-system switch control unit controls one or more channels of the multi-channel button switch to be opened or closed according to a fault type and a control signal sent by the controller, the multi-channel button switch further comprises multi-channel switch state indicator lamps and network interfaces which correspond to one another, and the controller remotely controls one or more channels of the multi-channel button switch to be opened or closed through the network interfaces.
In an optional embodiment, the detection unit is configured to detect a voltage and current loop of the wattless meter, and a voltage and a current of the electric energy meter.
In an optional embodiment, the system further includes a gate closing device, which is respectively connected to the electrical cabinet main body device and the controller, and configured to determine a gate closing mode according to the fault type, close one or more of the electrical cabinet main body devices according to the gate closing mode, generate gate closing information, and send the gate closing information to the controller, where the gate closing information includes the fault type, model, type, number, and geographical location of the closed electrical cabinet main body device.
In an alternative embodiment, the detection unit is configured to detect a capacity of the capacitor, a voltage of an undervoltage trip of the transfer switch, and a voltage of a time relay.
In an optional embodiment, the fault model is built by injecting a component fault feature into a circuit function simulation model, and further comprises a fault analysis unit, which is used for operating the fault model, selecting a fault test node and a failure mode thereof by taking the type and position of a component in the fault model as nodes, obtaining an output waveform of the fault test node corresponding to the failure mode, extracting a range parameter of the waveform feature, judging the state of the corresponding node as a fault for the corresponding node exceeding a parameter use range specified by the range parameter, otherwise, judging the corresponding node as a normal node, establishing a failure mode fault dictionary of the fault node according to the waveform feature of the fault test node, the fault judgment result and the component fault feature of the corresponding fault test node, and applying the same excitation as the circuit function simulation model to the main equipment of the electrical cabinet when the main equipment of the electrical cabinet is subjected to fault detection, selecting a test node of the electrical cabinet main body equipment to obtain an output waveform of the test node, extracting range parameters of waveform characteristics, inquiring and contrasting according to the content of the fault dictionary, determining the component type, the position and the failure mode type of the electrical cabinet main body equipment, and completing fault detection of the electrical cabinet main body equipment, wherein the component fault characteristics determine the range parameters and the fault characteristics of the waveform characteristics through waveform analysis according to the normal state waveform obtained at each test node, the component fault characteristics comprise the component type, the failure mode type and the component position, and each of the fault dictionary is a feature vector consisting of the range parameters of the node output waveform characteristics, a fault judgment result and a component fault model.
In an optional embodiment, the fault model is set according to detection parameters of each device in the electrical cabinet main body equipment and a fault type corresponding to the detection parameters, and the detection parameters further include electric quantity parameters, which include electric quantity parameters acquired from a power grid and electric quantity parameters acquired from the inside of a gateway table.
In an optional embodiment, the display is further configured to display an overhaul operation step corresponding to the fault type, where the overhaul operation step includes powering on a faulty electrical cabinet main device to enter a self-inspection mode, initializing all elements in the faulty electrical cabinet main device, accessing a system bus in the faulty electrical cabinet main device by an upper computer, acquiring working state parameters of all elements in the initialized faulty electrical cabinet main device through the system bus, referring to a communication protocol and an electrical cabinet main device fault parameter comparison table, determining a faulty element and a fault code in the faulty electrical cabinet main device, and performing deep analysis and judgment according to an operating state and a fault reason of a chip inside the faulty electrical cabinet main device.
The embodiment of the invention provides an intelligent electrical cabinet, wherein a detection unit, a fault processor, a controller and a display except electrical cabinet main body equipment are arranged in an electrical cabinet shell, so that electrical parameters of corresponding parts of the electrical cabinet main body equipment can be detected, the fault type is known by the fault processor and is displayed on the display, so that inspection personnel can know suspected problems of the electrical cabinet and timely maintain the electrical cabinet when inspecting each electrical cabinet, a control center is not required to analyze the electrical parameters, and maintenance personnel are additionally dispatched when a fault is found, so that the labor cost is saved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an intelligent electrical cabinet according to an embodiment of the present invention.
Icon: 10-electrical cabinet main body equipment; 20-a detection unit; 30-a fault handler; 40-a controller; 50-display.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments 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.
At present, in the inspection and maintenance process of the electrical cabinet, inspection personnel are required to perform regular inspection and maintenance on the electrical cabinet. Meanwhile, the control center also needs to monitor the working condition of the electrical cabinet according to the electrical parameters of the electrical cabinet, and sends maintenance personnel to maintain the electrical cabinet when monitoring that the electrical cabinet fails, and in the working guarantee process of the electrical cabinet, the regular inspection of the inspection personnel and the timely maintenance of the maintenance personnel are needed, so that the personnel cost is high.
Therefore, the intelligent electrical cabinet provided by the embodiment of the invention can realize maintenance of the electrical cabinet in the routing inspection process, and saves maintenance time and personnel cost.
For the understanding of the present embodiment, a detailed description will be given of a disclosed embodiment of the present invention.
Fig. 1 is a schematic structural diagram of an intelligent electrical cabinet according to an embodiment of the present invention.
Referring to fig. 1, an intelligent electrical cabinet comprises an electrical cabinet housing, electrical cabinet main body equipment 10, a fault processor 30, a controller 40, a display 50 and a detection unit 20, wherein the electrical cabinet housing is arranged inside the housing and is plated with a color zinc layer;
the electrical cabinet main body equipment 10 is connected with the detection unit 20 and used for controlling and protecting electrical equipment in the power supply and distribution process;
the detection unit 20 is respectively connected with the fault processor 30 and the controller 40, and is configured to detect voltages and currents of each device in the electrical cabinet main body equipment, temperatures of a joint and a contact, temperatures of a cable joint and a switch static contact, a switch load current, a collected remote measurement, a remote communication quantity, a remote control quantity and a state quantity, and respectively send detection results to the controller and the fault processor, wherein the remote measurement includes voltages, currents, a power grid frequency and an oil pumping machine working frequency, the remote communication quantity includes a start switching quantity signal, a stop switching quantity signal and a contactor state, the remote control quantity includes a circuit breaker, a closing contactor operation and a motor speed control, and the state quantity includes oil pumping machine stroke frequency information data, oil output quantity information data, water injection quantity information data, gas quantity information data, Temperature information data and vibration information data;
the fault processor 30 is connected with the controller 40 and the display 50, and is configured to input the detection result into a fault model to obtain a fault type, and send the fault type to the controller 40 and the display 50, respectively, where the fault type includes a device type of a faulty device and location information of the faulty device;
a controller 40 for uploading the detection result and the failure type to the server;
and a display 50 for displaying the fault type.
In practical application's preferred embodiment, through set up detecting element 20 except that regulator cubicle main part equipment 10 in regulator cubicle shell inside, fault handling ware 30, controller 40, display 50, so that can detect the electrical parameter of the corresponding part of regulator cubicle main part equipment 10, and learn the fault type by fault handling ware 30, and show in display 50, so that the personnel of patrolling and examining can know the suspected problem of this regulator cubicle when examining every regulator cubicle, and in time maintain, need not the control center through the analysis to electrical parameter, when discovering the trouble, maintenance personal is sent in addition, the human cost is saved.
It can be understood that the controller 40 uploads the detection result detected by the detection unit 20 and the fault type obtained by the fault processor 30 to the server in real time, so that the control center can know the working condition of the electrical cabinet in real time and communicate with the inspection personnel in charge of the control center.
It should be noted that the fault model is set according to the detection parameters of each device in the electrical cabinet main body equipment 10 and the fault types corresponding to the detection parameters.
Specifically, the fault model may be set according to detection parameters of each device in the electrical cabinet main body equipment and a fault type corresponding to the detection parameters, where the detection parameters further include electric quantity parameters, and the electric quantity parameters include electric quantity parameters acquired from a power grid and electric quantity parameters acquired from the inside of a gateway table.
For example, the user may input the type of fault that may occur in various devices in the electrical cabinet A, B, C, D and the electrical parameters presented when the fault occurs into the fault model in advance, so that in the actual application process, when the electrical cabinet presents the same electrical parameters as the electrical cabinet, the fault model can know what kind of device presents what fault at the time.
In an optional embodiment, in order to facilitate inspection personnel to more accurately inspect the electrical cabinet, the display 50 may be further configured to display the inspection operation steps corresponding to the fault types, and the inspection personnel may complete basic inspection work according to the inspection operation steps displayed on the display 50, so as to reduce the threshold requirement for inspecting the electrical cabinet.
As an alternative embodiment, the electrical parameters and the corresponding fault types obtained from the fault model may be obtained from a control center.
As an alternative embodiment, the electrical cabinet main body device 10 includes one or more of a circuit breaker, a reactive power meter, an electric energy meter, a transfer switch, and a capacitor.
Here, the detection unit 20 includes at least one current sensor, a voltage sensor, a power sensor, or the like disposed on the device to be detected to perform corresponding voltage, current, and power capacity detection on each device in the electrical cabinet main body apparatus 10.
In some possible embodiments, the detecting unit 20 includes at least one current sensor, voltage sensor or power sensor disposed on the device to be detected, and is used for detecting the opening coil voltage, closing coil voltage, control loop voltage and closing electromagnet voltage of the circuit breaker.
When the voltage of the opening coil is higher, the opening coil is possibly burnt out; when the voltage of the closing coil is too high, poor contact may exist; when the voltage of the control loop is too high, the control loop fuse may be burnt out; when the voltage of the closing electromagnet is too low, the voltage of the closing electromagnet needs to be increased to meet the requirement.
In some possible embodiments, the detection unit 20 is used to detect the voltage current loop of the wattmeter.
When the capacitance compensation power factor of the reactive power meter is detected to be high, the reactive power meter is inverted or not, and the phase sequence of incoming lines is wrong, the incoming lines of the reactive power meter need to be adjusted.
In some possible embodiments, the detection unit 20 is used to detect the voltage and current of the electric energy meter.
And when the poor contact of the secondary plug-in of the electric energy meter is detected, readjusting the part.
In some possible embodiments, the detection unit 20 is used to detect the voltage of the undervoltage trip of the diverter switch, the voltage of the time relay.
When the voltage of the undervoltage release and the voltage of the time relay are detected, the undervoltage release and the time relay may not be closed.
In some possible embodiments, the detection unit 20 is used to detect the capacitance of the capacitor.
When the capacitor is detected to be low in capacity, a situation may arise in which the capacitor needs to be replaced.
In an optional embodiment, the remote control device further comprises a multi-way button switch and a dual-way switch control unit, the dual-way switch control unit is connected with the controller, the dual-way switch control unit is connected with the multi-way button switch, the dual-way switch control unit controls one or more ways of the multi-way button switch to be opened or closed according to a fault type and a control signal sent by the controller, the multi-way button switch further comprises multi-way switch state indicator lamps and network interfaces which correspond to one another, and the controller remotely controls one or more ways of the multi-way button switch to be opened or closed through the network interfaces.
In an optional embodiment, the electric cabinet further comprises a power circuit connected with the multi-channel button switch, a power supply of the power circuit is a three-phase five-wire power supply, each A, B, C phase incoming line of the three-phase power supply is provided with a relay, a relay is arranged between each outgoing line of the multi-channel button switch and a A, B, C phase line, three relays and three resistors are respectively connected between the three phase line and the ground of an outlet terminal A, B, C of the electric cabinet main body equipment, and the resistors between each phase outgoing line of the electric cabinet main body equipment and the ground are respectively 4K Ω -50W, 2K Ω -50W and 1K Ω -150W; three relays and three resistors are respectively connected between the A, B, C three-phase outgoing line of the electrical cabinet main body equipment and the neutral line N, and the resistors between each phase outgoing line of the electrical cabinet main body equipment and the neutral line N are respectively 150 omega-500W, 300 omega-300W and 500 omega-150W.
In an optional embodiment, after receiving the acquisition instruction, the detection unit may feed back corresponding data to the controller and the upper computer according to the acquisition instruction, for example, if the type of the data to be acquired is voltage information, then after receiving the acquisition instruction, the detection unit may feed back current voltage information to the controller and the upper computer. Meanwhile, the controller and the upper computer can judge whether the data fed back by each detection unit is received, when the data fed back by the detection unit is not received, the fact that the line of the detection unit is abnormal is indicated, and the controller and the upper computer can mark the line as a suspected abnormal detection unit.
Moreover, each intelligent electrical cabinet is provided with an address, so that maintenance personnel can maintain the intelligent electrical cabinets more accurately, and the fault type is associated with the address of the intelligent electrical cabinet with abnormal line. For example, 10 detection units are connected to the smart electrical cabinet, and when 9 of the detection units are detection units and one of the detection units is a suspected line anomaly detection unit, the controller and the upper computer can determine that the suspected line anomaly detection unit is the line anomaly detection unit. Meanwhile, the address can be used for distinguishing information of each detection unit, for example, the address can be an IP address, and can also be a serial number of the detection unit or the intelligent electrical cabinet.
In an optional embodiment, the system further includes a gate closing device, which is respectively connected to the electrical cabinet main body device and the controller, and configured to determine a gate closing mode according to the fault type, close one or more of the electrical cabinet main body devices according to the gate closing mode, generate gate closing information, and send the gate closing information to the controller, where the gate closing information includes the fault type, model, type, number, and geographical location of the closed electrical cabinet main body device.
As an alternative embodiment, the fault model may also be constructed by injecting a component fault feature into the circuit function simulation model, for example, what state the a component is in belongs to what fault. The embodiment of the invention also comprises a fault analysis unit which is used for operating the fault model, selecting a fault test node and a failure mode thereof by taking the type and the position of the component in the fault model as nodes, determining the test position of the component A according to the type of the component A, further selecting the fault test node according to the test position, obtaining the output waveform of the fault test node corresponding to the failure mode, extracting the range parameter of the waveform characteristic, judging the state of the corresponding node which exceeds the parameter use range specified by the range parameter as a fault, otherwise, judging the state as normal, establishing a failure mode fault dictionary of the fault node according to the waveform characteristic of the fault test node, the fault judgment result and the component failure characteristic of the corresponding fault test node, and applying the same excitation as the circuit function simulation model to the main equipment of the electric cabinet when the main equipment of the electric cabinet is subjected to fault detection, selecting a test node of the electrical cabinet main body equipment to obtain an output waveform of the test node, extracting range parameters of waveform characteristics, inquiring and contrasting according to the content of the fault dictionary, determining the component type, the position and the failure mode type of the electrical cabinet main body equipment, and completing fault detection of the electrical cabinet main body equipment, wherein the component fault characteristics determine the range parameters and the fault characteristics of the waveform characteristics through waveform analysis according to the normal state waveform obtained at each test node, the component fault characteristics comprise the component type, the failure mode type and the component position, and each of the fault dictionary is a feature vector consisting of the range parameters of the node output waveform characteristics, a fault judgment result and a component fault model.
As an optional embodiment, in order to facilitate the inspection personnel to perform the maintenance, the display 50 may display the maintenance mode of the corresponding fault type in addition to the fault type, so that the untrained inspection personnel may also perform the maintenance on the fault of the electrical cabinet.
In the practical application process, the maintenance operation step includes that the main equipment of the fault electrical cabinet is powered on to enter a self-checking mode, all elements in the main equipment of the fault electrical cabinet are initialized, an upper computer accesses a system bus in the main equipment of the fault electrical cabinet, working state parameters of all the elements in the main equipment of the fault electrical cabinet after initialization are obtained through the system bus, a communication protocol and an electrical cabinet main equipment fault parameter comparison table are referred to, elements with faults and fault codes in the main equipment of the fault electrical cabinet are determined, and deep analysis and judgment are carried out according to the running state and fault reasons of a chip in the main equipment of the fault electrical cabinet.
The computer program product of the intelligent electrical cabinet provided by the embodiment of the present invention includes a computer readable storage medium storing a program code, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, and details are not described here.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.
Claims (10)
1. An intelligent electrical cabinet is characterized by comprising an electrical cabinet shell, electrical cabinet main body equipment, a fault processor, a controller, a display and a detection unit, wherein the electrical cabinet main body equipment, the fault processor, the controller, the display and the detection unit are arranged in the shell;
the electrical cabinet main body equipment is connected with the detection unit and used for controlling and protecting electrical equipment in the power supply and distribution process;
the detection unit is respectively connected with the fault processor and the controller and is used for detecting each device in the main equipment of the electric cabinet and the voltage and current of the electric equipment, the temperature of a joint and a contact, the temperature of a cable joint and a switch static contact, switch load current, acquisition remote measurement, remote communication quantity, remote control quantity and state quantity of the electric equipment and respectively sending detection results to the controller and the fault processor, wherein the remote measurement comprises voltage, current, power grid frequency and working frequency of the oil pumping machine, the remote communication quantity comprises a starting switching quantity signal, a stopping switching quantity signal and a contactor state, the remote control quantity comprises circuit breaker completion, switching-on contactor operation and motor speed control, and the state quantity comprises oil pumping machine stroke frequency information data, oil output information data, water injection information data, Gas quantity information data, temperature information data and vibration information data;
the fault processor is connected with the controller and the display and used for inputting the detection result into a fault model to obtain a fault type and respectively sending the fault type to the controller and the display, wherein the fault type comprises the equipment type of the fault equipment and the position information of the fault equipment;
the controller is used for uploading the detection result and the fault type to a server;
and the display is used for displaying the fault type.
2. The intelligent electrical cabinet of claim 1, wherein the electrical cabinet body equipment comprises one or more of a circuit breaker, a reactive power meter, an electrical energy meter, a transfer switch, and a capacitor.
3. The intelligent electrical cabinet according to claim 2, wherein the detection unit comprises at least one current sensor, voltage sensor or power sensor disposed on the device to be detected; the detection unit is used for detecting the voltage of a switching-off coil, the voltage of a switching-on coil, the voltage of a control loop and the voltage of a switching-on electromagnet of the circuit breaker.
4. The intelligent electrical cabinet according to claim 3, further comprising a multi-way button switch and a dual-way switch control unit, wherein the dual-way switch control unit is connected to the controller, the dual-way switch control unit is connected to the multi-way button switch, the dual-way switch control unit controls one or more of the multi-way button switch to be turned on or off according to a fault type and a control signal sent by the controller, the multi-way button switch further comprises a multi-way switch state indicator lamp and a network interface which correspond to each other one by one, and the controller remotely controls one or more of the multi-way button switch to be turned on or off through the network interface.
5. The intelligent electrical cabinet according to claim 3, wherein the detection unit is configured to detect a voltage-current loop of the wattless meter, and a voltage and a current of the electrical energy meter.
6. The intelligent electrical cabinet according to claim 3, further comprising a gate closing device, connected to the electrical cabinet main device and the controller, respectively, and configured to determine a gate closing manner according to the fault type, close one or more of the electrical cabinet main devices according to the gate closing manner, generate gate closing information, and send the gate closing information to the controller, where the gate closing information includes the fault type, model, type, number, and geographical position of the closed electrical cabinet main device.
7. The intelligent electrical cabinet according to claim 3, wherein the detection unit is used for detecting the capacity of the capacitor, the voltage of an under-voltage release of the change-over switch and the voltage of a time relay.
8. The intelligent electrical cabinet according to claim 1, wherein the fault model is built by injecting a component fault feature into a circuit function simulation model, the fault analysis unit is used for operating the fault model, selecting a fault test node and a failure mode thereof by taking the type and position of a component in the fault model as nodes to obtain an output waveform of the fault test node corresponding to the failure mode, extracting a range parameter of the waveform feature, judging the state of the corresponding node as a fault for a parameter use range beyond the range parameter regulation, otherwise, judging the corresponding node as a normal state, establishing a failure mode fault dictionary of the fault node according to the waveform feature of the fault test node, a fault judgment result and the component fault feature of the corresponding fault test node, and applying the same excitation as the circuit function simulation model to main equipment of the electrical cabinet when fault detection of the main equipment of the electrical cabinet is performed, selecting a test node of the electrical cabinet main body equipment to obtain an output waveform of the test node, extracting range parameters of waveform characteristics, inquiring and contrasting according to the content of the fault dictionary, determining the component type, the position and the failure mode type of the electrical cabinet main body equipment, and completing fault detection of the electrical cabinet main body equipment, wherein the component fault characteristics determine the range parameters and the fault characteristics of the waveform characteristics through waveform analysis according to the normal state waveform obtained at each test node, the component fault characteristics comprise the component type, the failure mode type and the component position, and each of the fault dictionary is a feature vector consisting of the range parameters of the node output waveform characteristics, a fault judgment result and a component fault model.
9. The intelligent electrical cabinet according to claim 1, wherein the fault model is set according to detection parameters of each device in the electrical cabinet main body equipment and fault types corresponding to the detection parameters, the detection parameters further include electrical quantity parameters, and the electrical quantity parameters include electrical quantity parameters acquired from a power grid and electrical quantity parameters acquired from the inside of a gateway table; the fault processor is further used for determining the type of the current fault of the electric equipment under the condition that the voltage and the current of the electric equipment are higher or lower; under the condition that the temperature of the electric equipment is higher, determining the type of the heat dissipation fault of the electric equipment at present; under the condition that the temperature of the joint and the contact is higher, determining that the type of the contact fault of the joint and the contact is currently in a fault state; under the condition that the temperatures of the cable connector and the switch static contact are higher, determining the type of the contact fault of the cable connector and the switch static contact at present; determining that the current is in a switch fault type under the condition that the current of the switch load is higher; under the condition that the telemetering voltage, current and power grid frequency are abnormal, determining the type of the current suspected electric equipment fault, and detecting the voltage and the current of the electric equipment; under the condition that the working frequency of the remote-measuring oil pumping machine is abnormal, determining the fault type of the oil pumping machine at present; under the conditions of starting the switching value signal, stopping the switching value signal and abnormal state of the contactor, determining the type of contact fault of a contact of a suspected switch at present, and detecting the temperature of the contact, the contact and the switch; determining the type of the current action fault under the conditions of abnormal switching-on operation of a circuit breaker and a contactor and abnormal speed control of a motor; and determining the current fault type of the oil pumping unit under the condition that the stroke frequency information data, the oil output information data, the water injection information data, the gas quantity information data, the temperature information data and the vibration information data of the oil pumping unit are abnormal.
10. The intelligent electrical cabinet according to claim 1, wherein the display is further configured to display an overhaul operation step corresponding to the fault type, the overhaul operation step includes powering on a main device of the faulty electrical cabinet to enter a self-inspection mode, initializing all elements in the main device of the faulty electrical cabinet, enabling an upper computer to access a system bus in the main device of the faulty electrical cabinet, obtaining working state parameters of all elements in the main device of the faulty electrical cabinet after initialization through the system bus, referring to a communication protocol and an electrical cabinet main device fault parameter comparison table, determining a component with a fault and a fault code in the main device of the faulty electrical cabinet, and performing deep analysis and judgment according to an operating state and a fault cause of a chip inside the main device of the faulty electrical cabinet.
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| CN115808643A (en) * | 2023-02-06 | 2023-03-17 | 北京瑞阳伟业科技有限公司 | Regulator cubicle function test platform with real-time data acquisition |
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