CN214176900U - Arc light monitoring and protecting device for medium-voltage switch cabinet - Google Patents
Arc light monitoring and protecting device for medium-voltage switch cabinet Download PDFInfo
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- CN214176900U CN214176900U CN202023304365.3U CN202023304365U CN214176900U CN 214176900 U CN214176900 U CN 214176900U CN 202023304365 U CN202023304365 U CN 202023304365U CN 214176900 U CN214176900 U CN 214176900U
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- arc light
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y04S40/124—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 wired telecommunication networks or data transmission busses
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Abstract
The utility model provides an arc light control protection device for medium voltage switchgear, is including installing arc light sensor, current sensor, signal processing and controlling means and the power module inside the cubical switchboard body, still is equipped with the ethernet network card among the signal processing and the controlling means to network through the net twine, constitute the arc light control protection network that a cubical switchboard group was listed as. The signal processing and controlling device is provided with an arc sensor and a current sensor and is used for monitoring arc light generated in the switch cabinet and the working current value of the switch cabinet when the arc light is generated. The signal processing and controlling device has a shell with a panel and is arranged on a cabinet door of a secondary instrument room of the switch cabinet. The arc light monitoring protection network is also provided with a computer as an upper computer and is used for carrying out data communication with the signal processing and control devices of the switch cabinets through the Ethernet. The utility model has the advantages that: the response speed of the device is improved, and the arc fault of the switch cabinet can be quickly eliminated.
Description
Technical Field
The utility model belongs to the power equipment field, concretely relates to arc light control protection device for medium voltage switchgear.
Background
In recent years, along with the rapid development of economy, the domestic power industry is continuously developed, and the medium voltage switchgear is more and more widely applied to a power transmission and distribution system. Meanwhile, when a short-circuit fault occurs in the medium-voltage switch cabinet, the generated arc light can cause small harm to equipment and personnel, even can evolve into a bus accident, and serious economic loss is caused. For monitoring arc light faults of medium-voltage switch cabinets with the grade below 35KV, currently, an arc light sensor is additionally arranged for monitoring, monitoring signals are transmitted to a microprocessor circuit after being subjected to digital processing, and the microprocessor circuit gives an alarm or instructs a circuit breaker to trip according to programs to carry out protection control, for example, a medium-voltage switch cabinet arc light protection device (publication No. CN 106786402A) disclosed in Chinese invention patent application and a switch cabinet arc light protection system and a feeder cabinet arc light protection system (CN 206533120U) disclosed in Chinese utility model patent all provide switch cabinet arc light monitoring protection schemes with different schemes respectively. However, the arc monitoring protection scheme provided by the above patent document is that one switch cabinet is provided with one arc monitoring protection system, or a plurality of switch cabinets are provided with one arc monitoring protection system, and the two schemes have the disadvantages that: one switch cabinet is provided with a set of arc light monitoring and protecting system, the protection effect is only limited to the switch cabinet, if the arc light fault of the switch cabinet is serious, and the trip of the upper-level switch cabinet is needed, the interlocking control can not be realized due to no other information transmission channel, so that the fault is enlarged; the arc light monitoring system is matched with a plurality of switch cabinets, the transmission time of a signal loop is not problematic due to the adoption of an optical fiber transmission mode, but for the control protection of the switch cabinets, the transmission time delay of signals is large due to the fact that the lengths of control cables are different and the signal transmission time delay of the cables is different, particularly for the control of the switch cabinets at a long distance, so that the arc light fault protection which needs to be controlled quickly is very unfavorable, faults can not be eliminated in time and control failure can be caused, and further the faults are enlarged.
Disclosure of Invention
In order to solve the problem, the utility model provides an arc light control protection device for medium voltage switchgear utilizes the industry ethernet component that has high-speed data transmission performance to be applied to the distributing type arc light control protection system network of different cubical switchboard to reach the medium voltage switchgear arc light control protection system that the scheme is reasonable, simple structure, low cost and application scope are wide, the reaction is rapid, the treatment effect is better.
In order to achieve the purpose, the utility model adopts the technical proposal that,
the arc light monitoring and protecting device for the medium-voltage switch cabinet comprises an arc light sensor, a current sensor, a signal processing and controlling device and a power module which are installed inside a switch cabinet body, and is characterized in that an Ethernet network card is further installed in the signal processing and controlling device, and the signal processing and controlling devices on different switch cabinets can be networked through the Ethernet network cable to form an arc light monitoring and protecting network of a switch cabinet group column.
The signal processing and controlling device is provided with a special arc sensor and a special current sensor and is used for monitoring arc light generated in the switch cabinet and the working current value of the switch cabinet when the arc light is generated.
The signal processing and controlling device is an integrated protecting device of a microprocessor circuit device and a control device which are arranged on a PCB and welded, and the device is provided with a shell with a panel and is arranged on a cabinet door of a secondary instrument room of a switch cabinet.
The signal processing and control device of each switch cabinet and the incoming line cabinet is provided with an optical fiber type arc light sensor and a current sensor, the arc light sensor is arranged in a bus chamber of the switch cabinet, and the current sensor is arranged in a primary equipment chamber of the switch cabinet; the signal processing and controlling device of the bus coupler cabinet is provided with two optical fiber type arc light sensors and a current sensor.
The arc light monitoring and protecting network of the switch cabinet array is also provided with a computer as an upper computer and is used for carrying out data communication with the signal processing and controlling devices of all switch cabinets through an Ethernet.
Compared with the prior art, the beneficial effects of the utility model are that:
because the utility model discloses an arc light control protection device for medium voltage switch cabinet has adopted the distributing type arc light control protection system who comprises industrial ethernet, in the working process of protection, according to the difference of arc light sensor position, can be selective straight jump the switch of inlet switch cabinet, the switch of sectional switch cabinet or the switch of being qualified for the next round of competitions of this unit switch cabinet. The distributed arc monitoring protection system can monitor the arc faults of the unit switch cabinet, can monitor the arc faults of the whole switch cabinet array through the distributed arc monitoring network, and is very short in control wire length because the distributed signal processing and control device is positioned in the cabinet of each switch cabinet, so that the transmission delay of the control wire is very short, the control signal sent by the device can be quickly responded, the arc faults needing to be quickly controlled are very favorable, the arc faults can be quickly eliminated, and the arc faults are eliminated in the middle of the initial stage.
Drawings
Fig. 1 is a schematic view of the structure and usage of the arc light monitoring and protecting device of the present invention.
Fig. 2 is a schematic diagram of the positional arrangement of the arc sensor, current sensor and signal processing and control device of each switchgear.
Fig. 3 is a schematic diagram of a panel structure of the signal processing and control device.
Fig. 4 is a schematic diagram of a microprocessor circuit of the signal processing and control device.
Fig. 5 is an enlarged schematic circuit diagram of the arc sensor.
Fig. 6 is a schematic diagram of a control circuit of the signal processing and control apparatus.
Fig. 7 is a schematic diagram of a power supply circuit.
Detailed Description
The following describes the specific structure of the arc light monitoring and protecting device for a medium voltage switch cabinet in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view showing the structure and usage of the arc light monitoring and protecting device of the present invention. In the figure, Bay1, Bay2, Bay3 and Bay4 are medium voltage switch cabinets with different purposes, a bus coupler cabinet is arranged in the middle, and a 1# incoming cabinet and a 2# incoming cabinet are arranged on the upper parts of the left side and the right side. An arc light sensor 3, a current sensor 1 and a signal processing and control device 2 are respectively arranged on the cabinet body of each medium-voltage switch cabinet and the cabinet body of each incoming line cabinet. The arc light sensor 3 is used for monitoring incoming buses of the left section and the right section of the switch cabinet, and the current sensor 1 is used for monitoring the bus working current of the switch cabinet.
The utility model provides an arc light control protection device for medium voltage switchgear, is including installing arc light sensor 3, signal processing and controlling means 2, current sensor 1 and the power module inside the cubical switchboard body, its characterized in that, signal processing and controlling means 2 in still be equipped with the ethernet network card, signal processing and controlling means 2 on the different cubical switchboard can be networked through the net twine 4 of ethernet, constitute the arc light control protection network of a cubical switchboard group row.
The signal processing and controlling device 2 is provided with a special arc sensor 3 and a current sensor 1 and is used for monitoring the arc light generated in the switch cabinet and the working current value of the switch cabinet when the arc light is generated.
The signal processing and control device 2 is an integrated protection device which is arranged on a PCB and welded with a microprocessor circuit device and a control circuit device, and the device is provided with a shell with a panel and is arranged on a cabinet door of a secondary instrument room of a switch cabinet.
The signal processing and control device 2 of each switch cabinet and each incoming line cabinet is provided with an optical fiber type arc light sensor 3 and a current sensor 1, the arc light sensor 3 is arranged in a bus chamber of the switch cabinet, and the current sensor 1 is arranged in a primary equipment chamber of the switch cabinet; the signal processing and control device 2 of the master coupler cabinet is provided with two optical fiber type arc sensors 3 and a current sensor 1.
The arc light monitoring and protecting network of the switch cabinet array is also provided with a computer as an upper computer which is used for carrying out data communication with the signal processing and controlling device 2 of each switch cabinet through an Ethernet.
As shown in fig. 2, the position arrangement of the arc sensor 3, the current sensor 1 and the signal processing and control device 2 of each switch cabinet is schematically shown. The arc light sensor 3 is arranged in a bus chamber of the switch cabinet body, the current sensor 1 is arranged in an equipment chamber of the switch cabinet body, and the signal processing and controlling device 2 is arranged on a cabinet door of an instrument chamber of the switch cabinet body.
Fig. 3 is a schematic diagram of a panel structure of the signal processing and control device 2. The panel is provided with a display screen which can display information such as time, cabinet number, numerical value of arc light, working current value of the switch cabinet and the like.
Fig. 4 is a schematic diagram of a microprocessor circuit of the signal processing and control device. Fig. 5 is an enlarged schematic circuit diagram of the arc sensor. Fig. 6 is a schematic diagram of a control circuit of the signal processing and control apparatus. Fig. 7 is a schematic diagram of a power supply circuit. The circuits of the four schematic diagrams are the prior art, and many technical data are introduced and analyzed, which are not described herein again.
Compared with the prior art, the beneficial effects of the utility model are that:
because the utility model discloses an arc light control protection device for medium voltage switch cabinet has adopted the distributing type arc light control protection system who comprises industrial ethernet, in the working process of protection, according to the difference of arc light sensor position, can be selective straight jump the switch of inlet switch cabinet, the switch of sectional switch cabinet or the switch of being qualified for the next round of competitions of this unit switch cabinet. The distributed arc monitoring protection system can monitor the arc faults of the unit switch cabinet, can monitor the arc faults of the whole switch cabinet array through the distributed arc monitoring network, and is very short in control wire length because the distributed signal processing and control device is positioned in the cabinet of each switch cabinet, so that the transmission delay of the control wire is very short, the control signal sent by the device can be quickly responded, the arc faults needing to be quickly controlled are very favorable, the arc faults can be quickly eliminated, and the arc faults are eliminated in the middle of the initial stage.
Claims (5)
1. The arc light monitoring and protecting device for the medium-voltage switch cabinet comprises an arc light sensor, a current sensor, a signal processing and controlling device and a power module which are installed inside a switch cabinet body, and is characterized in that an Ethernet network card is further installed in the signal processing and controlling device, and the signal processing and controlling devices on different switch cabinets can be networked through the Ethernet network cable to form an arc light monitoring and protecting network of a switch cabinet group column.
2. An arc monitoring protection device for medium voltage switchgear according to claim 1, characterized in that said signal processing and control device is equipped with arc sensors and current sensors for monitoring the arc occurring in the switchgear and the switchgear operating current values at the time of arc occurrence.
3. An arc monitoring protection device for medium voltage switchgear of claim 2, wherein the signal processing and control device is an integrated protection device of microprocessor circuit device and control device disposed and soldered on a PCB board, having a housing with a panel and mounted on the cabinet door of the secondary instrument room of the switchgear.
4. An arc monitoring protection device for medium voltage switchgear as claimed in claim 2, wherein the signal processing and control device of each of the switchgear and the inlet cabinet is equipped with a fiber-optic arc sensor and a current sensor, the arc sensor is installed in the busbar compartment of the switchgear, the current sensor is installed in the primary equipment compartment of the switchgear; the signal processing and controlling device of the bus coupler cabinet is provided with two optical fiber type arc light sensors and a current sensor.
5. An arc monitoring protection arrangement for medium voltage switchgear as claimed in claim 2, wherein the arc monitoring protection network of the switchgear panel further comprises a computer as a host computer for data communication with the signal processing and control means of the respective switchgear via an ethernet network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023304365.3U CN214176900U (en) | 2020-12-30 | 2020-12-30 | Arc light monitoring and protecting device for medium-voltage switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023304365.3U CN214176900U (en) | 2020-12-30 | 2020-12-30 | Arc light monitoring and protecting device for medium-voltage switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214176900U true CN214176900U (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023304365.3U Active CN214176900U (en) | 2020-12-30 | 2020-12-30 | Arc light monitoring and protecting device for medium-voltage switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214176900U (en) |
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- 2020-12-30 CN CN202023304365.3U patent/CN214176900U/en active Active
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