CN204405787U - A kind of switch cabinet partial discharge warning device - Google Patents
A kind of switch cabinet partial discharge warning device Download PDFInfo
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- CN204405787U CN204405787U CN201420810018.3U CN201420810018U CN204405787U CN 204405787 U CN204405787 U CN 204405787U CN 201420810018 U CN201420810018 U CN 201420810018U CN 204405787 U CN204405787 U CN 204405787U
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
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Abstract
A kind of switch cabinet partial discharge warning device, comprises signal gathering unit, signal transmitter unit and signal receiving unit; Signal gathering unit comprises discharge signal sensor, filtering circuit and amplifying circuit; Signal transmitter unit comprises trigger circuit, single-chip microcomputer, RFID reader, RFID label tag and wireless sending module, the input end of trigger circuit connects the output terminal of amplifying circuit, the output terminal of trigger circuit connects the input end of single-chip microcomputer, single-chip microcomputer and RFID reader interconnect, and the output terminal of single-chip microcomputer connects wireless sending module; Signal receiving unit comprises wireless receiving module, Control Room main frame, display and warning circuit, and the output terminal of radio receiving unit connects the input end of Control Room main frame, and the output terminal of Control Room main frame is connected with display and warning circuit respectively.The utility model can partial discharge phenomenon in detector switch cabinet, and the cabinet information of opening the light that shelf depreciation occurs is sent to Control Room in time carries out reporting to the police and showing.
Description
Technical field
The utility model relates to technical field of electric equipment, particularly a kind of warning device for switch cubicle.
Background technology
High-tension switch cabinet is the important electrical in electric system, usually be arranged in transformer station, the shelf depreciation of high-tension switch cabinet is the main cause of proximity switch cabinet generation insulation fault, the partial discharge phenomenon therefore effectively in detector switch cabinet and carry out the cabinet information of opening the light that shelf depreciation occurs in time to notify to be the necessary condition guaranteeing that high-tension switch cabinet, even power system safety and stability run.
Utility model content
The utility model for the deficiencies in the prior art, provide a kind of for switch cubicle, can the warning device that notifies of partial discharge phenomenon effectively in detector switch cabinet the cabinet information of opening the light that shelf depreciation occurs is carried out in time.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
Switch cabinet partial discharge warning device, comprise be arranged in switch cubicle for gather local discharge signal signal gathering unit, for the signal transmitter unit that cabinet information of opening the light is sent and the signal receiving unit be arranged in Control Room; Described signal gathering unit comprises the discharge signal sensor, filtering circuit and the amplifying circuit that connect successively; Signal transmitter unit comprises trigger circuit, single-chip microcomputer, RFID reader, RFID label tag and wireless sending module; The output terminal of the input end connection signal collecting unit of trigger circuit, the output terminal of trigger circuit connects the input port of single-chip microcomputer, and single-chip microcomputer and RFID reader interconnect, and the output port of single-chip microcomputer connects the input end of wireless sending module; Described signal receiving unit comprises wireless receiving module, Control Room main frame, display and warning circuit, the wireless sending module of wireless receiving module and signal transmitter unit carries out information transmission through cordless communication network, the output terminal of radio receiving unit connects the input end of Control Room main frame, and the output terminal of Control Room main frame is connected with display and warning circuit respectively.
The concrete structure of trigger circuit described in the utility model is: described trigger circuit comprise and are connected in series in triode between power supply and ground and resistance.
The concrete structure of warning circuit described in the utility model is: described warning circuit comprises voice alarm circuit and light emitting diode, and voice alarm circuit comprises audio frequency amplifier and loudspeaker.
Owing to have employed above technical scheme, acquired by the utility model, technical progress is as follows.
The utility model is used in the switch cubicle of transformer station, can partial discharge phenomenon effectively in detector switch cabinet, and the cabinet information of opening the light that shelf depreciation occurs can be sent to Control Room in time, shown by sound and light alarm and display, operating personnel open-and-shutly can know switch cubicle position and internal unit situation that shelf depreciation occurs by display, for maintenance work provides information accurately and reliably.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram of signal gathering unit described in the utility model and signal transmitter unit;
Fig. 2 is the electrical schematic diagram of signal receiving unit described in the utility model;
Fig. 3 is the structural representation of signal gathering unit described in the utility model.
In figure, each label is expressed as: ANT. discharge signal sensor, LB. wave filter, FD. amplifying circuit, Q. triode, R resistance, U1. single-chip microcomputer, U2. wireless sending module, U3. wireless receiving module, CPU. Control Room main frame, LCD. display, U5. audio frequency amplifier, D. light emitting diode, SP. loudspeaker; 1. housing, 2. magnet, 3. circuit board.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
The utility model comprises signal gathering unit, signal transmitter unit and signal receiving unit; Signal gathering unit and signal receiving unit are arranged in switch cubicle, signal gathering unit for gathering the local discharge signal in switch cubicle, the input end of the output terminal connection signal transmitter unit of signal gathering unit; Signal receiving unit is arranged in the Control Room of transformer station, and the switch cubicle information sent for Received signal strength transmitter unit is also reported to the police.
The circuit diagram of signal gathering unit as shown in Figure 1, comprises the discharge signal sensors A NT, filtering circuit LB and the amplifying circuit FD that connect successively.Discharge signal sensors A NT is used for the local discharge signal in receiving key cabinet, produces instantaneous voltage over the ground.The signal that discharge signal sensors A NT exports is sent into amplifying circuit and is carried out amplification process after filtering circuit filtering, then sends into signal transmitter unit as trigger pip.In the present embodiment, discharge signal sensors A NT is arranged in housing 1, as shown in Figure 3.Described discharge signal sensors A NT adopts capacitance type sensor, and described housing is flat box body structure, and the top of housing is hatch frame, and opening is convenient to gather local discharge signal; .Frame is reserved at the top of housing, and frame is used for clamping discharge signal sensors A NT, is provided with circuit board 3 in housing, and circuit board is welded filtering circuit and amplifying circuit.Housing bottom is also provided with flat magnet 2, is positioned on switch cubicle so that adsorbed securely by housing.
The circuit diagram of signal transmitter unit as shown in Figure 1, comprises trigger circuit, single-chip microcomputer U1, RFID reader, RFID label tag and wireless sending module U2.The output terminal of the input end connection signal collecting unit of trigger circuit, the output terminal of trigger circuit connects the input port of single-chip microcomputer, and the P1.1 pin of single-chip microcomputer and RFID reader interconnect, and the output port TXD of single-chip microcomputer is connected with the input end of wireless sending module.Trigger circuit comprise and are connected in series triode Q between power supply and ground and resistance R, and the output terminal of trigger circuit draws between the emitter and resistance R of triode Q, connects the INT pin of single-chip microcomputer U1.
In the present embodiment, single-chip microcomputer U1 adopts 80C51, and the acp chip of wireless sending module adopts nRF401.RFID reader is by the information of contactless mode reading electronic labels RFID label tag, and information passes to single-chip microcomputer U1 by serial peripheral equipment interface SPI, and RFID reader is high frequency reader, and inner main chip is RC500.RFID label tag is installed on the inwall of switch cubicle, and material requires waterproof, stores each facility information in the Position Number of switch cubicle and switch cubicle in RFID label tag.Distance between RFID label tag and RFID reader should in the reliable scope read.
The circuit diagram of signal receiving unit as shown in Figure 2, comprise wireless receiving module U3, Control Room host CPU, display lcd and warning circuit, the wireless sending module of wireless receiving module and signal transmitter unit carries out information transmission through cordless communication network, the output terminal of radio receiving unit connects the RXD port of Control Room main frame, and output port P1.0, P1.1, P1.2 of Control Room main frame are connected with warning circuit and display respectively.The acp chip of wireless receiving module U3 adopts nRF401.
Warning circuit comprises voice alarm circuit and light emitting diode D, and voice alarm circuit comprises audio frequency amplifier U5 and loudspeaker SP.
When the utility model uses, a set of signal gathering unit and signal transmitter unit are all installed in each switch cubicle, in the FRID label of signal transmitter unit, store the facility information in the geographic position of switch cubicle, numbering and switch cubicle; Wireless receiving module and warning circuit are arranged in Control Room, are connected with Control Room main frame.
Principle of work of the present utility model is as described below:
When there is shelf depreciation in the cabinet that opens the light, discharge signal sensors A NT collects signal and produces an instantaneous voltage-to-ground, and this voltage-to-ground is transferred to wave filter carries out filtering process, voltage signal after filtering process is sent into amplifying circuit and is carried out signal amplification, and then sends into signal transmitter unit.
In the trigger circuit of signal transmitter unit, the base stage of triode Q connects the output terminal of amplifying circuit, after the base stage of triode receives voltage signal, triode ON, trigger circuit are connected, the upper port of resistance R inputs trigger pip to single-chip microcomputer U1, after single-chip microcomputer U1 receives signal, enable to RFID reader, make the information in RFID reader reading RFID label tag, after RFID reader has read, be transferred to single-chip microcomputer encode, the coded signal after process sends through wireless sending module U2 by single-chip microcomputer.
The information of the wireless receiving module Received signal strength transmitter unit transmission of signal receiving unit, and sent into Control Room main frame carry out decoding process, send sound and light alarm by warning circuit after Control Room host process, and carry out the display of switch cubicle specifying information by display lcd.
Claims (4)
1. switch cabinet partial discharge warning device, is characterized in that: comprise be arranged in switch cubicle for gather local discharge signal signal gathering unit, for the signal transmitter unit that cabinet information of opening the light is sent and the signal receiving unit be arranged in Control Room; Described signal gathering unit comprises the discharge signal sensor (ANT), filtering circuit (LB) and the amplifying circuit (FD) that connect successively; Signal transmitter unit comprises trigger circuit, single-chip microcomputer (U1), RFID reader, RFID label tag and wireless sending module (U2), the output terminal of the input end connection signal collecting unit of trigger circuit, the output terminal of trigger circuit connects the input port of single-chip microcomputer, single-chip microcomputer and RFID reader interconnect, and the output port of single-chip microcomputer connects the input end of wireless sending module; Described signal receiving unit comprises wireless receiving module (U3), Control Room main frame (CPU), display (LCD) and warning circuit, the wireless sending module of wireless receiving module and signal transmitter unit carries out information transmission through cordless communication network, the output terminal of radio receiving unit connects the input end of Control Room main frame, and the output terminal of Control Room main frame is connected with display and warning circuit respectively.
2. switch cabinet partial discharge warning device according to claim 1, is characterized in that: described trigger circuit comprise and are connected in series in triode (Q) between power supply and ground and resistance (R).
3. switch cabinet partial discharge warning device according to claim 2, is characterized in that: described warning circuit comprises voice alarm circuit and light emitting diode, and voice alarm circuit comprises audio frequency amplifier (U5) and loudspeaker (SP).
4. switch cabinet partial discharge warning device according to claim 3, it is characterized in that: described discharge signal sensor (ANT) adopts capacitance type sensor, be arranged on housing in (1), described housing is flat box body structure, the top of housing is hatch frame, and the bottom of housing is provided with flat magnet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420810018.3U CN204405787U (en) | 2014-12-20 | 2014-12-20 | A kind of switch cabinet partial discharge warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420810018.3U CN204405787U (en) | 2014-12-20 | 2014-12-20 | A kind of switch cabinet partial discharge warning device |
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| Publication Number | Publication Date |
|---|---|
| CN204405787U true CN204405787U (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420810018.3U Expired - Fee Related CN204405787U (en) | 2014-12-20 | 2014-12-20 | A kind of switch cabinet partial discharge warning device |
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| Country | Link |
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| CN (1) | CN204405787U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093738A (en) * | 2016-08-26 | 2016-11-09 | 张振堂 | A kind of middle-low voltage switch cabinet online detector for partial discharge |
| CN110501617A (en) * | 2019-07-11 | 2019-11-26 | 特斯联（北京）科技有限公司 | A kind of partial discharge of switchgear detection system and method |
-
2014
- 2014-12-20 CN CN201420810018.3U patent/CN204405787U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093738A (en) * | 2016-08-26 | 2016-11-09 | 张振堂 | A kind of middle-low voltage switch cabinet online detector for partial discharge |
| CN110501617A (en) * | 2019-07-11 | 2019-11-26 | 特斯联（北京）科技有限公司 | A kind of partial discharge of switchgear detection system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20191220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |