CN210863905U - Outdoor intelligent low-voltage fault diagnosis device - Google Patents
Outdoor intelligent low-voltage fault diagnosis device Download PDFInfo
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- CN210863905U CN210863905U CN201921492658.3U CN201921492658U CN210863905U CN 210863905 U CN210863905 U CN 210863905U CN 201921492658 U CN201921492658 U CN 201921492658U CN 210863905 U CN210863905 U CN 210863905U
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Abstract
The utility model discloses an outdoor intelligent low-voltage fault diagnosis device, which comprises an outer casing and a sensor box inside the outer casing; the sensor box is fixed on the bottom plate of the lower cover, a sinking groove is formed in the box body, the carrier module is fixed in the sinking groove of the sensor body in a pluggable mode and forms a whole with the sensor, and an intelligent three-phase full-parameter acquisition interface module, a micro control processor, a fault analysis and diagnosis module, a dynamic electric energy metering and monitoring module, a function configuration module, a communication network module, a data storage module and an encryption module are arranged on the printed board. The utility model discloses a setting of each module on the sensor, backend server can realize the retrieval to the diagnostic record of intelligence low pressure trouble, the update and the upgrading of procedure, and the function protocol switches the upgrading, very big detection and the maintenance work load that has alleviateed the low-voltage apparatus maintainer.
Description
Technical Field
The utility model relates to a distribution network automation technical field, concretely relates to open air intelligence low pressure fault diagnosis device.
Background
At present, the urban construction and the increasing of the electricity consumption are continuously promoted; the electricity consumption of residents and businesses is obviously increased, so that the loads of some lines and transformers are increased; the phenomena of overlong power failure time, phase loss, three-phase overvoltage, undervoltage, switching-off and power limitation appear; the low-voltage line equipment is seriously aged, the inherent hidden danger of the equipment is difficult to eliminate, particularly, the line tripping phenomenon generally occurs in the season alternation period, and the component proportion of the load is seriously uncoordinated.
For low-voltage equipment, the reliability, continuity and stability of power supply are mainly ensured, the electric energy quality is good, and the electric energy cost is reduced to the maximum extent; the power utilization requirement of the user is met to the maximum extent. The low-voltage fault diagnosis equipment is generally applied and popularized in the distribution network automation industry including low-voltage equipment due to simple structure, low cost and excellent performance, and the traditional low-voltage fault diagnosis equipment is single in communication mode, low in real-time monitoring efficiency and difficult in remote upgrading, and rarely meets outdoor use conditions in application scenes. The power utilization safety of the power grid of the transformer area is seriously influenced, and the diversity of faults cannot be diagnosed in time.
The method aims to meet the outdoor severe working environment, support various communication modes and improve the working efficiency of fault diagnosis. The system needs to be researched and developed to have the capability of diagnosing events such as three-phase overvoltage, undervoltage, phase failure, power failure, three-phase overcurrent, three-phase overload, short-circuit fault and the like, and the events can be reported in time after the events occur. The scheme is automatic in monitoring and adaptation and meets the outdoor use environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide an outdoor intelligent low pressure failure diagnosis device. The outdoor intelligent low-voltage fault diagnosis device has the characteristics of novel design, low manufacturing cost and strong practicability.
The utility model provides a technical scheme that its technical problem adopted is:
an outdoor intelligent low-voltage fault diagnosis device comprises an outer shell box and a sensor box inside the outer shell box; the shell box comprises an upper cover, a shell body and a lower cover, wherein a screw hole is formed in the edge of the shell body, the upper cover and the lower cover are fixed in the screw hole through screws, and wall-mounted external ears are arranged on two sides of the shell body; the sensor is fixed on a bottom plate of the lower cover, the sensor comprises a sensor body and a top cover, the top cover is hinged with the sensor body, a sinking groove is formed in the sensor body, a printed board and a carrier communication module are arranged in the sinking groove, the printed board and the carrier communication module are fixed in the sinking groove of the sensor body in a pluggable mode and form a whole with the sensor, a plurality of LED indicating lamps are arranged on the surface of the sensor body on the left side of the sinking groove, top cover fixing holes are formed in the surface of the sensor body on the right side of a sinking groove box body, and a plurality of plug-in type wiring terminals and antenna holes are formed in a front panel of the sensor body; the printed board is connected with the carrier communication module, the LED indicator light and the plug-in wiring terminal through wires, an intelligent three-phase full-parameter acquisition interface module, a micro control processor, a fault analysis and diagnosis module, a dynamic electric energy metering and monitoring module, a function configuration module, a communication network module, a data storage module and an encryption module are arranged on the printed board, the micro control processor is connected with the intelligent three-phase full-parameter acquisition interface module, the fault analysis and diagnosis module, the dynamic electric energy metering and monitoring module, the function configuration module, the communication network module, the data storage module and the encryption module, the micro control processor is connected with a platform area intelligent device through the communication network module, and the communication network module comprises an RS-, a carrier communication unit and micropower.
Furthermore, the intelligent three-phase full-parameter acquisition interface module comprises a pluggable terminal, a phase voltage acquisition interface, an outdoor open-close type phase current acquisition interface and a temperature acquisition interface.
Furthermore, the micro control processor comprises a voltage sampling circuit, a current sampling circuit, a control output interface circuit and a temperature sampling circuit, wherein three input ends of the voltage sampling circuit are respectively connected with UA (user interface), UB (universal serial bus) and UC (user interface) ends of an output end of a pluggable terminal, an output end of the voltage sampling circuit is connected with the micro control processor, and acquired voltage signals are converted into signals which can be identified by the micro control processor; the three input ends of the current sampling circuit are respectively connected with IA, IB and IC ends of the output end of the pluggable terminal, the output end of the current sampling circuit is connected with the micro control processor, and the acquired current signal is converted and processed into a signal which can be recognized by the micro control processor; the input end of the temperature sampling circuit is connected with the temperature sensor, the output end of the temperature sampling circuit is connected with the micro control processor, and the temperature signal collected by the temperature sensor is converted into a signal which can be identified by the micro control processor.
Furthermore, a voltage transformer is arranged on a line between the pluggable terminal and the main loop cable, a pricking pin is penetrated into the cable through a pricking pin bolt, the input end of the voltage transformer is connected with three-phase alternating current power supplies UA, UB and UC and used for alternating current ABC three-phase analog quantity acquisition, and the output end of the voltage transformer is connected with the input end of the voltage sampling circuit; the circuit between pluggable terminal and the main loop cable is provided with a current transformer, a pricking pin penetrates into the cable through a pricking pin bolt, the input end of the current transformer is connected with three-phase alternating current power supplies IA, IB and IC and used for alternating current ABC three-phase analog quantity collection, and the output end of the current transformer is connected with the input end of the current sampling circuit.
The voltage sampling circuit, the current sampling circuit and the temperature sampling circuit respectively collect voltage signals, current signals and temperature signals of the low-voltage cable, and the signals are converted into signals which can be recognized by the micro-control processor and transmitted to the micro-control processor.
And the micro-control processor calculates and diagnoses the signals of the sampling circuit, and respectively calculates the event data of three-phase overvoltage, undervoltage, phase loss, power failure, three-phase overcurrent, three-phase overload, short-circuit fault, cable temperature and the like.
The micro control processor monitors the running voltage and voltage harmonic of the low-voltage fault diagnosis device through the voltage sampling circuit, and when the running voltage or the harmonic of the low-voltage fault diagnosis device exceeds a set protection value, the micro control processor uploads fault information to the intelligent equipment in the transformer area in a communication mode of one of carrier, RS and micropower wireless.
The micro control processor monitors the running current and harmonic waves of the low-voltage fault diagnosis device through the current sampling circuit, and when the running current or the current harmonic waves of the low-voltage fault diagnosis device exceed a set protection value, the micro control processor uploads fault information to the intelligent equipment of the transformer area in a communication mode of one of carrier, RS and micropower wireless
The micro control processor monitors the temperature of the low-voltage cable through the temperature sampling circuit, and when the low-voltage fault diagnosis device detects that the temperature of the cable exceeds a set protection value, the micro control processor uploads fault information to the intelligent equipment in the transformer area in a communication mode of one of carrier, RS and micropower wireless
Further, the micro control processor further comprises a communication interface, the communication interface is connected with the micro control processor, the communication interface adopts RS-communication, and the functions of switching protocol types, setting operation parameters and upgrading program files are mainly used as maintenance tools.
Further, the micro-control processor is electrically connected with the LED indicator lamp and used for displaying the running state and the warning.
Further, the micro control processor communicates through the serial port of the carrier communication unit, receives power utilization information, power utilization equipment and fault diagnosis information, and sends power carrier signals of equipment fault diagnosis information and function configuration information to the equipment in the uplink station area through the carrier signal sending circuit.
Furthermore, the micro control processor stores the diagnosis fault through the data storage module, and the fault storage function of the low-voltage fault diagnosis device is realized.
Furthermore, the micro-control processor performs software and hardware anti-theft protection on the device through the encryption module, and the encryption chip realizes the encryption protection function on the low-voltage fault diagnosis device in order to prevent unauthorized access or copying of programs in the chip.
Compared with the prior art, the utility model has the following advantage: the multi-stage fault diagnosis of a first-stage JP cabinet, a second-stage newspaper leakage box, a third-stage household meter box and the like can be realized, and the monitoring of the 400V shunt running state of the user side of the low-voltage distribution network is greatly ensured; the functions of data acquisition in real time, fault timely diagnosis, data communication transmission, fault alarm storage, system remote upgrade, cable temperature early warning, encryption, theft prevention and the like can be realized; the low-voltage equipment maintainers can know the running condition of the low-voltage equipment line at any time through the master station, and do not need to detect by adopting operation equipment on site, so that the maintenance workload of the low-voltage equipment maintainers is greatly reduced; for a failed equipment line, low-voltage equipment maintainers can find the failed equipment line in time through the master station upper computer, so that the problems that loss is increased and equipment is damaged due to untimely detection, and the stability of an electric power system is seriously influenced are avoided; due to the fact that the carrier communication module and the RS-485 communication bus are arranged in the intelligent low-voltage fault diagnosis device, the program of the intelligent low-voltage fault diagnosis device can be updated and the function of the intelligent low-voltage fault diagnosis device can be upgraded through a network at a background server, and therefore the workload of field debugging personnel is reduced.
Drawings
FIG. 1 is a sectional view of an outdoor housing upper cover according to the present invention;
fig. 2 is a cross-sectional view of the plug-in terminal module of the present invention;
fig. 3 is an axonometric view of the sensor body of the present invention;
FIG. 4 is a functional structure diagram of the present invention;
FIG. 5 is a schematic diagram of the connection of the micro control processor according to the present invention;
fig. 6 is a schematic view of the identification system of the present invention;
description of reference numerals:
1-upper cover, 101-top cover, 102-LED indicator light, 103-carrier communication module, 104-top cover fixing hole, 105-antenna hollow, 106-plug type wiring terminal, 107-printed board, 2-lower cover, 3-box body, 4-wall-mounted external ear, 5-screw hole, 6-outer shell box and 7-shell body.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings and examples:
it should be noted that the structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy that the present invention can produce and the purpose that the present invention can achieve.
Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
An outdoor intelligent low-voltage fault diagnosis device comprises a housing box 6 and a sensor box 8 inside the housing box 6; the outer shell box comprises an upper cover 1, a shell body 7 and a lower cover 2, a screw hole 5 is formed in the edge of the shell body 7, the upper cover 1 and the lower cover 2 are fixed in the screw hole 5 through screws, and wall-mounted outer lugs 4 are arranged on two sides of the shell body 7; the sensor 8 is fixed on a bottom plate of the lower cover 2, the sensor 8 comprises a sensor body 3 and a top cover 101, the top cover 101 is hinged with the sensor body 3, a sink groove is formed in the sensor body 3, a printed board 107 and a carrier communication module 103 are arranged in the sink groove, the printed board 107 and the carrier communication module 103 are fixed in the sink groove of the sensor body in a pluggable mode and form a whole with the sensor, a plurality of LED indicating lamps 102 are arranged on the surface of the sensor body 3 on the left side of the sink groove, a top cover fixing hole 104 is arranged on the surface of the sensor body 3 on the right side of a sink groove box body, and a plurality of plug-in wiring terminals 106 and antenna holes 105 are arranged on a front panel of the sensor body 3; the printed board 107 is wire-connected with the carrier communication module 103, the LED indicator light 102 and the plug-in connection terminal 106, the printed board 107 is provided with an intelligent three-phase full-parameter acquisition interface module, a micro-control processor, a fault analysis and diagnosis module, a dynamic electric energy metering and monitoring module, a function configuration module, a communication network module, a data storage module and an encryption module, the micro control processor is connected with the intelligent three-phase full-parameter acquisition interface module, the fault analysis and diagnosis module, the dynamic electric energy metering and monitoring module, the function configuration module, the communication network module, the data storage module and the encryption module, the micro control processor is connected with the intelligent equipment in the transformer area through the communication network module, and the communication network module comprises RS-485, a carrier communication unit and micropower.
Specifically, the intelligent three-phase full-parameter acquisition interface module comprises a pluggable terminal, a phase voltage acquisition interface, an outdoor open-close type phase current acquisition interface and a temperature acquisition interface.
Specifically, the micro control processor comprises a voltage sampling circuit, a current sampling circuit, a control output interface circuit and a temperature sampling circuit, wherein three input ends of the voltage sampling circuit are respectively connected with UA (user interface), UB (universal serial bus) and UC (user interface) ends of an output end of a pluggable terminal, an output end of the voltage sampling circuit is connected with the micro control processor, and acquired voltage signals are converted into signals which can be identified by the micro control processor; the three input ends of the current sampling circuit are respectively connected with IA, IB and IC ends of the output end of the pluggable terminal, the output end of the current sampling circuit is connected with the micro control processor, and the acquired current signal is converted and processed into a signal which can be recognized by the micro control processor; the input end of the temperature sampling circuit is connected with the temperature sensor, the output end of the temperature sampling circuit is connected with the micro control processor, and the temperature signal collected by the temperature sensor is converted into a signal which can be identified by the micro control processor.
Specifically, a voltage transformer is arranged on a line between the pluggable terminal and the main loop cable, a pricking pin is penetrated into the cable through a pricking pin bolt, the input end of the voltage transformer is connected with three-phase alternating current power supplies UA, UB and UC and used for alternating current ABC three-phase analog quantity acquisition, and the output end of the voltage transformer is connected with the input end of the voltage sampling circuit; the circuit between pluggable terminal and the main loop cable is provided with a current transformer, a pricking pin penetrates into the cable through a pricking pin bolt, the input end of the current transformer is connected with three-phase alternating current power supplies IA, IB and IC and used for alternating current ABC three-phase analog quantity collection, and the output end of the current transformer is connected with the input end of the current sampling circuit.
The voltage sampling circuit, the current sampling circuit and the temperature sampling circuit respectively collect voltage signals, current signals and temperature signals of the low-voltage cable, and the signals are converted into signals which can be recognized by the micro-control processor and transmitted to the micro-control processor.
And the micro-control processor calculates and diagnoses the signals of the sampling circuit, and respectively calculates the event data of three-phase overvoltage, undervoltage, phase loss, power failure, three-phase overcurrent, three-phase overload, short-circuit fault, cable temperature and the like.
The micro control processor monitors the running voltage and voltage harmonic of the low-voltage fault diagnosis device through the voltage sampling circuit, and when the running voltage or the harmonic of the low-voltage fault diagnosis device exceeds a set protection value, the micro control processor uploads fault information to the intelligent equipment in the transformer area in a communication mode of one of carrier, RS-485 and micropower wireless.
The micro control processor monitors the running current and harmonic waves of the low-voltage fault diagnosis device through the current sampling circuit, and when the running current or the current harmonic waves of the low-voltage fault diagnosis device exceed a set protection value, the micro control processor uploads fault information to the intelligent equipment of the transformer area in a communication mode of one of carrier, RS-485 and micropower wireless
The micro control processor monitors the temperature of the low-voltage cable through the temperature sampling circuit, and when the low-voltage fault diagnosis device detects that the temperature of the cable exceeds a set protection value, the micro control processor uploads fault information to the intelligent equipment in the transformer area in a communication mode of one of carrier, RS-485 and micropower wireless
Particularly, micro control processor still includes communication interface, communication interface with micro control processor connects, communication interface adopts RS-485 communication, and the function effect is that switching the specification kind, setting operation parameter, program file upgrade, mainly does the maintenance tool.
Specifically, the micro-control processor is electrically connected with the LED indicator lamp and used for displaying the running state and the warning.
Specifically, the micro-control processor communicates through the serial port of the carrier communication unit, receives power utilization information, power utilization equipment and fault diagnosis information, and sends a power carrier signal of equipment fault diagnosis information and function configuration information to the equipment in the uplink station area through the carrier signal sending circuit.
Specifically, the micro-control processor stores the diagnosis fault through the data storage module, and the fault storage function of the low-voltage fault diagnosis device is realized.
Specifically, the micro-control processor performs software and hardware anti-theft protection on the device through the encryption module, and the encryption chip realizes the encryption protection function on the low-voltage fault diagnosis device in order to prevent unauthorized access or copying of an internal program of the chip.
The utility model discloses it is weak to low voltage distribution network user side 400V operation state monitoring along separate routes, can't satisfy the technical problem that the operation overhauld and the quick location of trouble required such as handle, a user side 400V electric quantity information acquisition monitoring along separate routes can be realized to the utility model, the power failure and the accurate judgement of fault along separate routes are had a halt, software encryption protection, thereby user side 400V equipment operation state's control has been realized, operation and maintenance efficiency has been promoted, salvage for realizing user side fault, promote electric energy quality and establish simple and real basis, join in marriage the net trouble with user side low voltage and lead to user's influence further to reduce.
As shown in fig. 4, 5 and 6, the utility model relates to an outdoor intelligent low pressure fault diagnosis device, include: the intelligent three-phase full-parameter monitoring system comprises an intelligent three-phase full-parameter acquisition interface module, a micro control processor, a fault analysis and diagnosis module, a dynamic electric energy metering and monitoring module, a function configuration module, a communication network module, a data storage module and an encryption module.
The intelligent three-phase full-parameter acquisition interface module comprises a phase voltage acquisition interface, a phase current acquisition interface and a temperature acquisition interface, realizes comprehensive acquisition of three-phase overvoltage, undervoltage, phase failure, power failure, three-phase overcurrent, three-phase overload, short-circuit fault and other events, and stores secondary measurement data information converted by the sensor in a fault data storage unit. And the phase voltage acquisition interface is connected with a voltage measurement loop to realize voltage acquisition. The phase current acquisition interface consists of a high-magnification protection Current Transformer (CT) and a high-precision measurement CT, the protection CT realizes acquisition of phase protection current, provides criteria for a fault analysis and diagnosis module, and realizes high-precision acquisition of current by measuring the CT, so that the precision of shunt load monitoring is ensured. The temperature acquisition interface comprises a temperature sensor, and temperature acquisition of the cable is realized.
And the fault analysis and diagnosis module is used for detecting and analyzing shunt faults and comprehensively identifying and diagnosing the operation conditions according to the fault characteristics of the power distribution network through the collected voltage, current, residual current, temperature and other data of the three-phase low-voltage line.
The function configuration module comprises switching protocol configuration, operation parameter configuration, remote upgrading program and program file configuration, and can be communicated with the uplink transformer area equipment through the serial port communication module to look up and modify corresponding operation parameters through configuration information received by the serial port communication module.
The communication network module performs information interaction with the uplink intelligent equipment by adopting a standard protocol through one of an independent RS-485 serial port, carrier communication and micropower wireless.
The utility model discloses to weak links such as 400V low voltage distribution network user side failure diagnosis and judgement under the outdoor environment, the technical problem that can't satisfy requirements such as operation maintenance and the quick diagnostic processing of trouble has provided an open air intelligence low pressure failure diagnosis device. The functions of data acquisition in real time, fault timely diagnosis, data communication transmission, fault alarm storage, system remote upgrade, cable temperature early warning and the like can be realized; one of the RS-485 serial port, the carrier communication and the micropower wireless is used for performing information interaction with the uplink station area equipment through a standard protocol, so that the real-time performance, the accuracy and the stability of the fault diagnosis of the power system are greatly improved, and the workload of maintenance workers is reduced. The basis silly has been established for realizing in time salvageing of user side trouble, promoting electric energy quality, the utility model discloses structural optimization degree is high, the installation is simple and easy, nimble small and exquisite, can satisfy outdoor low pressure fault equipment's adverse operating environment.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.
Claims (10)
1. The utility model provides an outdoor intelligent low pressure fault diagnosis device which characterized in that: comprises a housing box (6) and a sensor (8) inside the housing box (6); the outer shell box comprises an upper cover (1), a shell body (7) and a lower cover (2), a screw hole (5) is formed in the edge of the shell body (7), the upper cover (1) and the lower cover (2) are fixed in the screw hole (5) through screws, and wall hanging outer lugs (4) are arranged on two sides of the shell body (7); the sensor (8) is fixed on the bottom plate of the lower cover (2), the sensor (8) comprises a sensor body (3) and a top cover (101), the top cover (101) is hinged with the sensor body (3), a sinking groove is arranged in the sensor body (3), a printed board (107) and a carrier communication module (103) are arranged in the sinking groove, the printed board (107) and the carrier communication module (103) are fixed in the sinking groove of the sensor body in a pluggable mode, the sensor and the sensor form a whole, the surface of the sensor body (3) at the left side of the sinking groove is provided with a plurality of LED indicating lamps (102), a top cover fixing hole (104) is arranged on the surface of the sensor body (3) at the right side of the sink tank body, a plurality of plug-in type wiring terminals (106) and antenna holes (105) are arranged on the front panel of the sensor body (3); the intelligent three-phase full-parameter monitoring system is characterized in that the printed board (107) is connected with the carrier communication module (103), the LED indicator lamp (102) and the plug-in wiring terminal (106) through wires, an intelligent three-phase full-parameter acquisition interface module, a micro control processor, a fault analysis and diagnosis module, a dynamic electric energy metering monitoring module, a function configuration module, a communication network module, a data storage module and an encryption module are arranged on the printed board (107), the micro control processor is connected with the intelligent three-phase full-parameter acquisition interface module, the fault analysis and diagnosis module, the dynamic electric energy metering monitoring module, the function configuration module, the communication network module, the data storage module and the encryption module, and the micro control processor is connected with a platform area intelligent device through the communication network module.
2. The outdoor intelligent low-voltage fault diagnosis device according to claim 1, characterized in that: the intelligent three-phase full-parameter acquisition interface module comprises a pluggable terminal, a phase voltage acquisition interface, an outdoor open-close type phase current acquisition interface and a temperature acquisition interface.
3. The outdoor intelligent low-voltage fault diagnosis device according to claim 1, characterized in that: the micro control processor comprises a voltage sampling circuit, a current sampling circuit, a control output interface circuit and a temperature sampling circuit, wherein three input ends of the voltage sampling circuit are respectively connected with UA (user interface), UB (universal bus) and UC (user interface) ends of the output end of the pluggable terminal, the output end of the voltage sampling circuit is connected with the micro control processor, and acquired voltage signals are converted into signals which can be identified by the micro control processor; the three input ends of the current sampling circuit are respectively connected with IA, IB and IC ends of the output end of the pluggable terminal, the output end of the current sampling circuit is connected with the micro control processor, and the acquired current signal is converted and processed into a signal which can be recognized by the micro control processor; the input end of the temperature sampling circuit is connected with the temperature sensor, the output end of the temperature sampling circuit is connected with the micro control processor, and the temperature signal collected by the temperature sensor is converted into a signal which can be identified by the micro control processor.
4. The outdoor intelligent low-voltage fault diagnosis device according to claim 3, characterized in that: a voltage transformer is arranged on a line between the pluggable terminal and the main loop cable, a pricking pin is penetrated into the cable through a pricking pin bolt, the input end of the voltage transformer is connected with three-phase alternating current power supplies UA, UB and UC and used for alternating current ABC three-phase analog quantity acquisition, and the output end of the voltage transformer is connected with the input end of the voltage sampling circuit; the circuit between pluggable terminal and the main loop cable is provided with a current transformer, a pricking pin penetrates into the cable through a pricking pin bolt, the input end of the current transformer is connected with three-phase alternating current power supplies IA, IB and IC and used for alternating current ABC three-phase analog quantity collection, and the output end of the current transformer is connected with the input end of the current sampling circuit.
5. The outdoor intelligent low-voltage fault diagnosis device according to claim 3, characterized in that: the micro control processor further comprises a communication interface, the communication interface is connected with the micro control processor, the communication interface adopts RS-485 communication, and the functions of switching protocol types, setting operation parameters and upgrading program files are mainly used as maintenance tools.
6. The outdoor intelligent low-voltage fault diagnosis device according to claim 5, characterized in that: and the micro-control processor is electrically connected with the LED indicating lamp and is used for displaying the running state and the warning.
7. The outdoor intelligent low-voltage fault diagnosis device according to claim 1, characterized in that: the communication network module comprises an RS-485, a carrier communication unit and micropower.
8. The outdoor intelligent low-voltage fault diagnosis device according to claim 7, characterized in that: the carrier communication unit is communicated with the micro control processor through a serial port, receives power utilization information, power utilization equipment and fault diagnosis information, and sends power carrier signals of equipment fault diagnosis information and function configuration information to the equipment in the uplink station area through the carrier signal sending circuit.
9. The outdoor intelligent low-voltage fault diagnosis device according to claim 6, characterized in that: the micro control processor stores the diagnosis fault through the data storage module, and the fault storage function of the low-voltage fault diagnosis device is realized.
10. The outdoor intelligent low-voltage fault diagnosis device according to claim 9, characterized in that: the micro-control processor performs software anti-theft protection on the device through the encryption module, and the encryption chip realizes the encryption protection function on the low-voltage fault diagnosis device in order to prevent unauthorized access or copying of a program in the chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921492658.3U CN210863905U (en) | 2019-09-09 | 2019-09-09 | Outdoor intelligent low-voltage fault diagnosis device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921492658.3U CN210863905U (en) | 2019-09-09 | 2019-09-09 | Outdoor intelligent low-voltage fault diagnosis device |
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| CN210863905U true CN210863905U (en) | 2020-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137296A (en) * | 2021-11-27 | 2022-03-04 | 台州安耐杰电力设备有限公司 | Three-phase circuit measurement and control diagnostic device |
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2019
- 2019-09-09 CN CN201921492658.3U patent/CN210863905U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137296A (en) * | 2021-11-27 | 2022-03-04 | 台州安耐杰电力设备有限公司 | Three-phase circuit measurement and control diagnostic device |
| CN114137296B (en) * | 2021-11-27 | 2024-04-09 | 台州安耐杰电力设备有限公司 | Three-phase circuit measurement and control diagnostic device |
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