CN202471953U - Monitor for secondary circuit of electronic transformer - Google Patents
Monitor for secondary circuit of electronic transformer Download PDFInfo
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- CN202471953U CN202471953U CN2012201262370U CN201220126237U CN202471953U CN 202471953 U CN202471953 U CN 202471953U CN 2012201262370 U CN2012201262370 U CN 2012201262370U CN 201220126237 U CN201220126237 U CN 201220126237U CN 202471953 U CN202471953 U CN 202471953U
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Abstract
The utility model relates to a monitor for a secondary circuit of an electronic transformer, belonging to the field of measurement. The monitor comprises an analog quantity input channel, a filter module, an A/D (Analog-Digital) module, a switching value input channel, a switching value module, an output module and a CPU (Central Processing Unit) module, wherein the analog quantity input channel, the filter module and the A/D module are sequentially connected with one another, the switching value input channel is connected with the switching value module, and the switching value module is connected with the output module; and the A/D module and the switching value module are connected with the CPU module through an AT (Analog Trunk) bus. Due to the adoption of an AT bus structure and a 32-bit CPU circuit, the monitor is compatible with the display and output data formats of the existing intelligent substation, meets the needs of simultaneous monitoring and recording of various analog quantities and switch values of the electronic transformer, has the functions of storing, displaying and printing, and can also carry out data output, so that the needs of on-site real-time monitoring and recording can be fully met. The monitor can be widely applied to the field of diagnosis/monitoring of the secondary circuit of the electronic transformer.
Description
Technical field
The utility model belongs to field of measurement, relates in particular to a kind of device that the electronic mutual inductor secondary circuit is diagnosed of being used for.
Background technology
Present digital transformer substation, intelligent transformer station are progressively adopted and are promoted.
In digital transformer substation, intelligent transformer station, adopted various electronic mutual inductors (such as optocoupler mutual inductor, small-signal mutual inductor etc.) in large quantities, the output signal of this type of mutual inductor is many with digital quantity usually.
State to the electronic mutual inductor that is used for digital transformer substation, intelligent transformer station is judged, mainly understands or judge its running status through the examining report that dispatches from the factory with periodic the detection now.
Because the sense cycle of mutual inductor is long usually, the abnormal running state that causes occurring during this period can't in time be found.Only when detecting, just in time take place just can come to light.Bring certain hidden danger so not only for circuit electric energy metrical, protection and security etc., but also taken great amount of manpower; Moreover, owing to adopted live line measurement, also exist certain hidden danger for equipment safety operation during test.
For the variety of issue and the defective of on-the-spot operation of this type of electronic mutual inductor and test existence, still not having ready-made experience and rules can be with reference to reference.
In the on-the-spot operation/testing; Be badly in need of a kind of instrument or device that can be installed in the scene; Secondary circuit to electronic mutual inductor carries out monitoring record in real time; With the stable operation of substation safety that guarantees to employ new technology, to solve the problem that exists when long-term puzzlement small signal mutual inductor detects effectively.Simultaneously; The data that the scene records can be used for the sampling analysis to the field working conditions of electronic mutual inductor; Can not be how when becoming research and improving the on-the-spot antijamming capability of electronic mutual inductor the firsthand information; Also can be used for setting up the raw data of a relevant electronic mutual inductor operating position, improvement and the popularization stockpile later to electronic mutual inductor.
The utility model content
The utility model technical matters to be solved provides a kind of electronic mutual inductor secondary circuit audiomonitor; It adopts and has now intelligent substation compatible fully data acquisition, record and output mode; Can monitor/record the secondary circuit of electronic mutual inductor in real time, can satisfy the needs of on-site real-time monitoring, record fully.
The technical scheme of the utility model is: a kind of electronic mutual inductor secondary circuit audiomonitor is provided; Comprise analog input channel, filtration module, A/D module, switching value input channel, switching value module, output module and CPU module; It is characterized in that: described analog input channel, filtration module and A/D module are connected successively; Described switching value input channel is connected with the switching value module, and described switching value module is connected with output module; Described A/D module, switching value module are connected with the CPU module through AT-bus.
Further, described CPU module is connected with display card through AT-bus, and described display card is connected with display.
Concrete, described CPU module is 32 bit CPU circuit;
Described 32 bit CPU circuit are made up of chip U5, the 1st to the 5th resistance, the 1st to the 3rd electric capacity,
Wherein, the AIN0.0 pin of chip U5 successively through the 4th, the 2nd and the 1st resistance, is connected with+3.3V power end, the AIN0.1 pin of chip U5, and warp the 5th, the 3rd and the 1st resistance successively is connected with+3.3V power end;
The AIN0.2 of chip U5～AIN0.7 pin ground connection;
The AV+ pin of chip U5 is connected with+3.3V power end, the 3rd electric capacity is attempted by+3.3V power end and ground between;
The P2.0/C2D pin of chip U5 is connected with the C2DAT end of AT-bus;
The RES/C2CLK pin of chip U5, with AT-bus /RST end is connected;
The P0.0 pin of chip U5 is connected with the PWM0 end of AT-bus;
The P0.4 of chip U5, P0.5 pin are held corresponding connection with TX, the RX of AT-bus respectively;
The V REF-pin ground connection of chip U5, its V REF+ pin is connected with the V REF+ of AT-bus;
The P1.4 of chip U5, P1.5 pin are connected with the LED2 end with LED1 respectively;
The P1.2 of chip U5, P1.3 pin are connected with KEY R end with KEY L respectively.
Further, described CPU module is connected with floppy disk with printer through AT-bus.
Its described floppy disk is the 1.44MB floppy disk.
Compare with prior art, the utility model has the advantages that:
1. adopt the AT-bus structure, technology maturation is easy to supportingly, and data rate is high;
2. with demonstration, the output data format compatible of existing intelligent substation, data transmission is accessible;
3. can monitor simultaneously, the various analog quantitys and the switching value of recorded electronic formula mutual inductor, have storage, demonstration and printing function, also can carry out data output, can satisfy the needs of on-site real-time monitoring, record fully.
Description of drawings
Fig. 1 is that the system of the utility model constitutes synoptic diagram;
Fig. 2 is the wiring diagram of present technique scheme CPU modular circuit.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Among Fig. 1; This electronic mutual inductor secondary circuit audiomonitor; Comprise analog input channel, filtration module, A/D module, switching value input channel, switching value module, output module and CPU module; Its described analog input channel, filtration module and A/D module are connected successively, and described switching value input channel is connected with the switching value module, and described switching value module is connected with output module; Described A/D module, switching value module are connected with the CPU module through AT-bus.
Further, described CPU module is connected with display card through AT-bus, and described display card is connected with display.
Further, described CPU module is connected with floppy disk with printer through AT-bus.
Its described floppy disk is the 1.44MB floppy disk.
The data that this device records at the scene can be used for the sampling analysis to the field working conditions of unconventional electronic mutual inductor; Can not be how when becoming research and improving the on-the-spot antijamming capability of unconventional electronic mutual inductor the firsthand information; Also can carry out verification to the electronic current mutual inductor loop; Avoided each at present protection verification must carry out the inconvenience (line side need have a power failure) of orientation test, the reliability and the security that help improving mains supply.For electric company brings economic benefit and social benefit.
Among Fig. 2, described CPU module is 32 bit CPU circuit.
Described 32 bit CPU circuit are made up of chip U5, the 1st to the 5th resistance, the 1st to the 3rd electric capacity.
Wherein, the AIN0.0 pin of chip U5 successively through the 4th, the 2nd and the 1st resistance, is connected with+3.3V power end, the AIN0.1 pin of chip U5, and warp the 5th, the 3rd and the 1st resistance successively is connected with+3.3V power end;
The AIN0.2 of chip U5～AIN0.7 pin ground connection;
The AV+ pin of chip U5 is connected with+3.3V power end, the 3rd electric capacity is attempted by+3.3V power end and ground between;
The P2.0/C2D pin of chip U5 is connected with the C2DAT end of AT-bus;
The RES/C2CLK pin of chip U5, with AT-bus /RST end is connected;
The P0.0 pin of chip U5 is connected with the PWM0 end of AT-bus;
The P0.4 of chip U5, P0.5 pin are held corresponding connection with TX, the RX of AT-bus respectively;
The V REF-pin ground connection of chip U5, its V REF+ pin is connected with the V REF+ of AT-bus;
The P1.4 of chip U5, P1.5 pin are connected with the LED2 end with LED1 respectively;
The P1.2 of chip U5, P1.3 pin are connected with KEY R end with KEY L respectively.
Adopt AT-bus structure and 32 bit CPU circuit; Demonstration, output data format compatible with existing intelligent substation; Satisfy monitoring, the various analog quantitys of recorded electronic formula mutual inductor and the needs of switching value simultaneously; Have storage, demonstration and printing function, also can carry out data output, can satisfy the needs of on-site real-time monitoring, record fully.
Because each module, circuit and AT-bus structure are prior art among Fig. 1; There are various commercially available prod optional; Those skilled in the art can obtain relevant information with reference to the supporting data of the Related product of each manufacturer, so its concrete circuit and corresponding wiring are no longer narrated at this.
Adopt the economic benefit behind this device to calculate:
To electronic current mutual inductor: can save 12000 yuan of labour costs/stand (2000*24/4) (artificial unit price wherein is 2000 yuan, and round of visits is 4 years, and a transformer station calculates by 24 loops, down together) year.
To electronic type voltage transformer: can save that 48000 yuan of labour costs/(2000*2*12) stands year.
The capital assets input is by sharing depreciation in 5 years, then 10000 yuan of year disbursements/stand.
Add up to each transformer station can reduce expenses at least 38000 yuan every year.
The data that this device records at the scene can be used for the sampling analysis to the field working conditions of electronic mutual inductor; Can not the firsthand information how when becoming research and improving the on-the-spot antijamming capability of unconventional electronic mutual inductor; Also can carry out verification to the electronic current mutual inductor loop; Avoided each at present protection verification must carry out the inconvenience (line side need have a power failure) of orientation test, the reliability and the security that help improving mains supply.For electric company brings economic benefit and social benefit.
The utility model can be widely used in the diagnose/monitor field of electronic mutual inductor secondary circuit.
Claims (5)
1. an electronic mutual inductor secondary circuit audiomonitor comprises analog input channel, filtration module, A/D module, switching value input channel, switching value module, output module and CPU module, it is characterized in that:
Described analog input channel, filtration module and A/D module are connected successively, and described switching value input channel is connected with the switching value module, and described switching value module is connected with output module; Described A/D module, switching value module are connected with the CPU module through AT-bus.
2. according to the described electronic mutual inductor secondary circuit of claim 1 audiomonitor, it is characterized in that described CPU module is connected with display card through AT-bus, described display card is connected with display.
3. according to the described electronic mutual inductor secondary circuit of claim 1 audiomonitor, it is characterized in that described CPU module is 32 bit CPU circuit;
Described 32 bit CPU circuit are made up of chip U5, the 1st to the 5th resistance, the 1st to the 3rd electric capacity,
Wherein, the AIN0.0 pin of chip U5 successively through the 4th, the 2nd and the 1st resistance, is connected with+3.3V power end, the AIN0.1 pin of chip U5, and warp the 5th, the 3rd and the 1st resistance successively is connected with+3.3V power end;
The AIN0.2 of chip U5～AIN0.7 pin ground connection;
The AV+ pin of chip U5 is connected with+3.3V power end, the 3rd electric capacity is attempted by+3.3V power end and ground between;
The P2.0/C2D pin of chip U5 is connected with the C2DAT end of AT-bus;
The RES/C2CLK pin of chip U5, with AT-bus /RST end is connected;
The P0.0 pin of chip U5 is connected with the PWM0 end of AT-bus;
The P0.4 of chip U5, P0.5 pin are held corresponding connection with TX, the RX of AT-bus respectively;
The V REF-pin ground connection of chip U5, its V REF+ pin is connected with the V REF+ of AT-bus;
The P1.4 of chip U5, P1.5 pin are connected with the LED2 end with LED1 respectively;
The P1.2 of chip U5, P1.3 pin are connected with KEY R end with KEY L respectively.
4. according to the described electronic mutual inductor secondary circuit of claim 1 audiomonitor, it is characterized in that described CPU module is connected with floppy disk with printer through AT-bus.
5. according to the described electronic mutual inductor secondary circuit of claim 1 audiomonitor, it is characterized in that described floppy disk is the 1.44MB floppy disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201262370U CN202471953U (en) | 2012-03-29 | 2012-03-29 | Monitor for secondary circuit of electronic transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201262370U CN202471953U (en) | 2012-03-29 | 2012-03-29 | Monitor for secondary circuit of electronic transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471953U true CN202471953U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201262370U Expired - Lifetime CN202471953U (en) | 2012-03-29 | 2012-03-29 | Monitor for secondary circuit of electronic transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202471953U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093688A (en) * | 2016-08-05 | 2016-11-09 | 国家电网公司 | A kind of Substation secondary circuit fault automatic detection alarm device |
-
2012
- 2012-03-29 CN CN2012201262370U patent/CN202471953U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093688A (en) * | 2016-08-05 | 2016-11-09 | 国家电网公司 | A kind of Substation secondary circuit fault automatic detection alarm device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |