CN205091413U - Acquisition unit is kept apart to intelligence switch volume - Google Patents
Acquisition unit is kept apart to intelligence switch volume Download PDFInfo
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- CN205091413U CN205091413U CN201520894715.6U CN201520894715U CN205091413U CN 205091413 U CN205091413 U CN 205091413U CN 201520894715 U CN201520894715 U CN 201520894715U CN 205091413 U CN205091413 U CN 205091413U
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- phototube coupling
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Abstract
The utility model discloses an acquisition unit is kept apart to intelligence switch volume, including the base, be provided with the printing board on the base, the printing board passes through the upper cover encapsulation and on the base, is provided with intelligent treatment circuit, female seat, RS485 binding post, B code signal binding post, 32 tunnel switching value optoelectronic isolation converting circuit and two switching value input terminals that all have 16 wiring ends on the printing board. The utility model discloses it is efficient, with low costs, can dismantle, interchangeability is strong, and the field engineering personnel of being convenient for change the maintenance, both have been used for the switching value collection of traditional transformer substation, are applicable to the switching value collection of digital transformer substation again, satisfy the demand that traditional transformer substation passed through to digital transformer substation, and the inside and outside wiring of the whole device screen body is simple, has guaranteed the aesthetic property of shielding the body.
Description
Technical field
The utility model belongs to Relay Protection Technology in Power System field, is specifically related to a kind of intelligent switch quantity isolation collecting unit.
Background technology
In comprehensive automation system of transformer substation, intake loop is the very important ingredient of power system relay protection system.The microcomputer protecting device of Fa Bian factory or transformer station, supervisory system, failure wave-recording and complex automatic system; a large amount of switching values is had to need access; and the accuracy of switch amount signals collecting and real-time have higher requirement, otherwise remote signalling can be caused to judge by accident, even cause protection misoperation.
The input of switching value mainly comprises the auxiliary point etc. of isolating switch, disconnector.These signals are all in high tension loop, there is very strong electromagnetic interference capability, so before collection, generally need to adopt isolation processing, the general optocoupler that adopts realizes Phototube Coupling conversion at present, and namely completing 220V (or 110V) level conversion is 24V level and isolation features.
Along with the progress of science and technology, digital transformer substation has become the inexorable trend of bulk power grid development as the important component part of intelligent grid, impels fault wave recording device gradually to digitizing, intelligent development simultaneously.No matter in traditional transformer station or at digital transformer substation; open the action logic that entry loop directly affects protection; this also impels manufacture and run unit constantly to think, improve; from hardware circuit to Software for Design; from chip selection to external cabling etc., the Acquisition Circuit in switch amount loop is all needed to carry out improving to adapt to the needs of digital transformer substation.Prior art:
220V (or 110V) switching value of present stage access fault wave recording device generally has three kinds of processing modes:
1) shielded box mode, namely external switch amount input signal is shielded after insulated terminal row switching, transmitted by cable and be linked into On-off signal end through Wiring trough, all on-off model (64 tunnels and more than) to concentrate in shielded box and unifiedly on a complete pcb board carry out two times transfer process (Phototube Coupling conversion), are then received on device main frame by the connecting line of DB37.
2) isolation conversion plate mode, namely external switch amount input signal is shielded after insulated terminal row switching, carry out two times transfer process (Phototube Coupling conversion) through one or more plate switch amount signal again, then received on device main frame by the connecting line of DB25/DB37.Wherein each plate can process to 16/32 way switch amount signal.
3) single optocoupler terminal mode, namely shields external switch amount input signal and directly carries out Phototube Coupling conversion process through optocoupler terminal, and then is connected on device main frame by the patchcord that the mode of connection to be converted to DB25 by optocoupler terminal card extender.
There is following defect in prior art:
1) shielded box mode adopts the structure of insulated terminal row+shielded box; Isolation conversion plate mode adopts insulated terminal to arrange+isolate the structure of conversion plate; Single optocoupler terminal mode adopts optocoupler terminal+card extender mode.These three kinds of mode complex structures, all need to carry out two times transfer process, cost is high, and the PCB plate of latter two mode is all outside exposed, there is potential safety hazard.
2) shielded box mode each way switch amount signal demand cable after first time conversion is connected with shielded box, and cable is many, has a strong impact on the wiring of screen body; Isolation conversion plate mode and single optocoupler terminal mode all need to rely on PCB plate to change into the mode of connecting line, namely each plate will be screwed in the terminal block on 16 tunnel/32 tunnels, install complicated, and connecting line is fixed on exposed single pcb board, safety and firmness is poor.
3) more than, three kinds of structures are maintainable poor when breaking down.Especially shielded box mode, once a certain road or a few way switch amount break down in shielded box, dismantle whole shielded box and could get rid of and deal with problems.
4) collection of traditional switch amount data in digital transformer substation can not be used for.
Utility model content
The purpose of this utility model is just to provide a kind of intelligent switch quantity to isolate collecting unit to solve the problem, Phototube Coupling conversion and the acquisition function of 32 way switch amount input signals can be realized simultaneously, can multiple unit parallel connection use, both can be used in traditional transformer station, also may be used for the switch acquisition of digital transformer substation.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of intelligent switch quantity isolation collecting unit, comprise base, described base is provided with printed board, described printed board is fastened on described base by upper cover, described printed board is provided with Intelligent treatment circuit, female seat, RS485 connection terminal, B coded signal connection terminal, 32 way switch amount Phototube Coupling change-over circuits and two all have the On-off signal terminal of 16 terminals, 32 terminals of two described On-off signal terminals are communicated with the signal input part one_to_one corresponding of switching value Phototube Coupling change-over circuit described in 32 tunnels, the signal output part of switching value Phototube Coupling change-over circuit described in every road is connected with described Intelligent treatment circuit and described female seat simultaneously, described female seat is provided with 32 signal terminals, 32 signal terminals of described female seat are communicated with the signal output part one_to_one corresponding of switching value Phototube Coupling change-over circuit described in 32 tunnels, described B coded signal connection terminal is connected with the B coded signal input end of described Intelligent treatment circuit, described RS485 connection terminal is arranged on the signal output part of described Intelligent treatment circuit.
Further, described upper cover, described printed board and described base are fixed together by 4 M3 screws.
Further, described base is provided with 3 for being stuck in the activity clasp on terminal block guide rail.
Further, described upper cover and described base are made by the isolation material of heat-proof combustion-resistant.
Further, described switching value Phototube Coupling change-over circuit comprises anti-jamming circuit, current-limiting resistance, filter protective circuit, clamp protection circuits and photoelectric isolating circuit, the signal input part of described anti-jamming circuit as described switching value Phototube Coupling change-over circuit signal input part and be connected with described On-off signal terminal, the signal output part of described anti-jamming circuit is connected with the signal input part of described filter protective circuit, described current-limiting resistance is arranged between described anti-jamming circuit and described filter protective circuit, the signal output part of described filter protective circuit is connected with the signal input part of described photoelectric isolating circuit, described clamp protection circuits is arranged between described filter protective circuit and described photoelectric isolating circuit, the signal output part of described photoelectric isolating circuit is provided with light emitting diode, the signal output part of described photoelectric isolating circuit as described switching value Phototube Coupling change-over circuit signal output part and be connected with described Intelligent treatment circuit and described female seat simultaneously.
The beneficial effects of the utility model are:
The utility model can carry out Phototube Coupling conversion process to 32 way switch amounts simultaneously, easy-to-use flexibly, raises the efficiency, reduces costs; Input and output all adopt pluggable plug-in unit, and such site intelligent switching value isolation collecting unit is detachable, interchangeability strong, is convenient to field engineering personnel repair and replacement, saves maintenance cost; Both gathered for traditional transformer substation switch amount, and be applicable to again the switch acquisition of digital transformer substation, meet the demand of traditional transformer station to digital transformer substation transition; Reduce the complicacy of the inside and outside wiring of whole device screen body, ensure that the aesthetic property of screen body.
Accompanying drawing explanation
Fig. 1 is the assembly structure schematic diagram of intelligent switch quantity described in the utility model isolation collecting unit;
Fig. 2 is the structured flowchart of switching value Phototube Coupling change-over circuit described in the utility model;
Fig. 3 is the theory diagram of intelligent switch quantity described in the utility model isolation collecting unit;
In figure: 1-M3 screw, 2-upper cover, 3-On-off signal terminal, 4-printed board, 5-activity clasp, 6-RS485 connection terminal, 7-female seat, 8-base, 9-B coded signal connection terminal.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As Fig. 1, shown in Fig. 2 and Fig. 3, the utility model comprises base 8, base 8 is provided with printed board 4, printed board 4 is fastened on base 8 by upper cover 2, printed board 4 is provided with Intelligent treatment circuit, female seat 7, RS485 connection terminal 6, B coded signal connection terminal 9, 32 way switch amount Phototube Coupling change-over circuits and two all have the On-off signal terminal 3 of 16 terminals, 32 terminals of two On-off signal terminals 3 are communicated with the signal input part one_to_one corresponding of 32 way switch amount Phototube Coupling change-over circuits, the signal output part of every way switch amount Phototube Coupling change-over circuit is connected with Intelligent treatment circuit and female seat 7 simultaneously, female seat 7 is provided with 32 signal terminals, 32 signal terminals of female seat 7 are communicated with the signal output part one_to_one corresponding of 32 way switch amount Phototube Coupling change-over circuits, B coded signal connection terminal 9 is connected with the B coded signal input end of Intelligent treatment circuit, RS485 connection terminal 6 is arranged on the signal output part of Intelligent treatment circuit.
In the present embodiment, upper cover 2, printed board 4 and base 8 are fixed together by 4 M3 screws 1, are convenient to dismounting.Base 8 being provided with 3 for being stuck in the activity clasp 5 on terminal block guide rail, being convenient to fixing whole intelligent switch quantity isolation collecting unit.Upper cover 2 and base 8 are made by the isolation material of heat-proof combustion-resistant, form from die sinking flame retardant plastics casing.
Switching value Phototube Coupling change-over circuit comprises anti-jamming circuit, current-limiting resistance, filter protective circuit, clamp protection circuits and photoelectric isolating circuit, the signal input part of anti-jamming circuit as switching value Phototube Coupling change-over circuit signal input part and be connected with On-off signal terminal 3, the signal output part of anti-jamming circuit is connected with the signal input part of filter protective circuit, current-limiting resistance is arranged between anti-jamming circuit and filter protective circuit, the signal output part of filter protective circuit is connected with the signal input part of photoelectric isolating circuit, clamp protection circuits is arranged between filter protective circuit and photoelectric isolating circuit, the signal output part of photoelectric isolating circuit is provided with light emitting diode D, the signal output part of photoelectric isolating circuit as switching value Phototube Coupling change-over circuit signal output part and be connected with Intelligent treatment circuit and female seat 7 simultaneously.
Anti-jamming circuit is for reducing the interference of common-mode noise to intake signal.
Current-limiting resistance is connected on signal input part, for reducing load end electric current and dividing potential drop.
Filter protective circuit is made up of transient supression diode and filter capacitor, the external interference signal that filtering inputs from signal input part.
Clamp protection circuits is reversal connection diode on loop; by the voltage clamp of switching value input circuit at predeterminated voltage; for preventing during terminal block, the electric power polarity in external drive loop being connect instead, protecting rear class buffer circuit, making the work of switching value change-over circuit more reliable.
Photoelectric isolating circuit is used for realizing the isolation of 110V/220V intake signal and is converted to 24V level signal.For ensureing that optocoupler can normally work, outside forceful electric power opens the light current outputed into signal and optocoupler, and to output signal completely isolated.
Light emitting diode D indicates the on off state of intake signal, and to onsite application, person provides intuitive and convenient.
The intake signal that intelligent switch quantity isolation collecting unit described in the utility model gathers comprises 110V and 220V intake two kinds of patterns.For adapting to the diversity (open as active into signal and passively to open into signal) of outside input circuit, in the design, 32 way switch amounts adopt empty node to input ground mode altogether to gather.When being input as active opening into signal, outer signal line positive pole meets intake passage anode K1-K32, and outer signal line negative pole meets intake passage negative terminal 220VG/110VG; When being input as passive opening into signal, outer signal line positive pole meets positive source DC220V/110V in screen, and outer signal line negative pole meets intake passage anode K1-K32, and intake passage negative terminal 220VG/110VG meets power cathode 220VG/110VG in screen.
During for conventional failure wave recording device, the signal output part that the utility model is switching value Phototube Coupling change-over circuit in the way of output adopted is connected with DB37 female seat, is then sent on the interior device main frame of screen by the special anti-interference connecting line of DB37.Wherein, special anti-interference connecting line, for suppressing the Conduction Interference on cable, ensure that the reliability of on-off model.
During for intelligent trouble wave recording device, the signal input part of Intelligent treatment circuit is connected with the signal output part of switching value Phototube Coupling change-over circuit.Intelligent treatment circuit adopts FPGA processor, and FPGA reads the switching value data after Phototube Coupling conversion process according to the sampling rate of 10kHz; Receive the B coded signal decoding of GPS, the time revising self is synchronous with B code simultaneously; Then the switching value data for collecting stamps precise time stamp, finally the switching value data of band time stamp is sent on the interior main frame of screen by RS485 serial line connection.
In the utility model, two On-off signal terminals 3 adopt 16 of fire-retardant spacing 5.08mm pluggable terminals; Female seat 7 adopts pluggable DB37 female seat; B coded signal connection terminal 9 and RS485 connection terminal 6 adopt 2 of fire-retardant spacing 5.08mm pluggable terminals.
For the intelligent switch quantity isolation collecting unit of conventional failure wave recording device except power lead, outside 32 road outside connected switch amount input lines and 1 special anti-interference connecting line of DB37, then without other intermediate cable lines; Intelligent switch quantity for intelligent trouble wave recording device isolates collecting unit except power lead, outside 32 road outside connected switch amount input lines, a pair B code input line and a pair RS485 serial output lines, then without other intermediate cable lines; Two kinds of way of outputs all decrease screen inside and outside portion's wiring of whole device, ensure that the aesthetic property of screen body.
In conventional failure wave recording device screen body, left side vertical setting of types guide rail can block 1-6 intelligent switch quantity isolation collecting unit after screen, each intelligent switch quantity isolates collecting unit process 32 path switching signal, maximumly can process 192 way switch amount signals; In intelligent trouble wave recording device screen body, distinguished by address code in serial port protocol and after screen, left side vertical setting of types guide rail can block 1-16 intelligent switch quantity and isolate collecting unit, maximumly process 512 tunnel traditional switch amount signals; Two kinds of patterns meet the greatest requirements of on-the-spot switch amount all completely.
Intelligent switch quantity isolation collecting unit described in the utility model has following advantage:
1) intelligent switch quantity isolation collecting unit adopts the insulation protection casing structure of heat-proof combustion-resistant, and an intelligent switch quantity isolation collecting unit can carry out Phototube Coupling conversion process to 32 way switch amounts simultaneously, easy-to-use flexibly, raises the efficiency, reduces costs.
2) intelligent switch quantity isolation collecting unit draw-in groove is fixed on the guide rail of screen body, intelligent switch quantity isolation collecting unit input end is received in input, export and adopt special anti-interference DB37 connecting line and a pair RS485 serial output lines to receive on device main frame, decrease the complicacy of the inside and outside wiring of whole device screen body, ensure that the aesthetic property of screen body.
3) input and output all adopt pluggable plug-in unit, and such site intelligent switching value isolation collecting unit is detachable, interchangeability strong, is convenient to field engineering personnel repair and replacement, saves maintenance cost.
4), time for traditional transformer station, 32 way switch amount input signals, by after the process of Phototube Coupling change-over circuit, are sent to conventional failure wave recording device through DB37 female seat and supporting special Anti-interference cable.
5) adopt FPGA to realize the collection of high speed Real-Time Switch amount signal, can be widely used in digital transformer substation.This functional realiey step is as follows: first FPGA receives the B coded signal decoding of GPS, and the time revising self is synchronous with B code; Then FPGA is that the switching value data collected stamps the timestamp being accurate to microsecond, finally the switching value data of band time stamp is sent to intelligent trouble wave recording device by RS485 serial line interface.Multiple switching value isolation collecting unit is distinguished by the address code in serial port protocol.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included in protection domain of the present utility model.
Claims (5)
1. an intelligent switch quantity isolation collecting unit, it is characterized in that: comprise base, described base is provided with printed board, described printed board is fastened on described base by upper cover, described printed board is provided with Intelligent treatment circuit, female seat, RS485 connection terminal, B coded signal connection terminal, 32 way switch amount Phototube Coupling change-over circuits and two all have the On-off signal terminal of 16 terminals, 32 terminals of two described On-off signal terminals are communicated with the signal input part one_to_one corresponding of switching value Phototube Coupling change-over circuit described in 32 tunnels, the signal output part of switching value Phototube Coupling change-over circuit described in every road is connected with described Intelligent treatment circuit and described female seat simultaneously, described female seat is provided with 32 signal terminals, 32 signal terminals of described female seat are communicated with the signal output part one_to_one corresponding of switching value Phototube Coupling change-over circuit described in 32 tunnels, described B coded signal connection terminal is connected with the B coded signal input end of described Intelligent treatment circuit, described RS485 connection terminal is arranged on the signal output part of described Intelligent treatment circuit.
2. intelligent switch quantity isolation collecting unit according to claim 1, is characterized in that: described upper cover, described printed board and described base are fixed together by 4 M3 screws.
3. intelligent switch quantity isolation collecting unit according to claim 1, is characterized in that: described base is provided with 3 for being stuck in the activity clasp on terminal block guide rail.
4. intelligent switch quantity isolation collecting unit according to claim 1, is characterized in that: described upper cover and described base are made by the isolation material of heat-proof combustion-resistant.
5. intelligent switch quantity isolation collecting unit according to claim 1, it is characterized in that: described switching value Phototube Coupling change-over circuit comprises anti-jamming circuit, current-limiting resistance, filter protective circuit, clamp protection circuits and photoelectric isolating circuit, the signal input part of described anti-jamming circuit as described switching value Phototube Coupling change-over circuit signal input part and be connected with described On-off signal terminal, the signal output part of described anti-jamming circuit is connected with the signal input part of described filter protective circuit, described current-limiting resistance is arranged between described anti-jamming circuit and described filter protective circuit, the signal output part of described filter protective circuit is connected with the signal input part of described photoelectric isolating circuit, described clamp protection circuits is arranged between described filter protective circuit and described photoelectric isolating circuit, the signal output part of described photoelectric isolating circuit is provided with light emitting diode, the signal output part of described photoelectric isolating circuit as described switching value Phototube Coupling change-over circuit signal output part and be connected with described Intelligent treatment circuit and described female seat simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520894715.6U CN205091413U (en) | 2015-11-11 | 2015-11-11 | Acquisition unit is kept apart to intelligence switch volume |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520894715.6U CN205091413U (en) | 2015-11-11 | 2015-11-11 | Acquisition unit is kept apart to intelligence switch volume |
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| CN205091413U true CN205091413U (en) | 2016-03-16 |
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| CN201520894715.6U Active CN205091413U (en) | 2015-11-11 | 2015-11-11 | Acquisition unit is kept apart to intelligence switch volume |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242152A (en) * | 2015-11-11 | 2016-01-13 | 成都府河电力自动化成套设备有限责任公司 | Intelligent switching value isolated acquisition unit |
| CN109406864A (en) * | 2018-11-12 | 2019-03-01 | 山东鲁能智能技术有限公司 | Distribution network terminal board remote signalling voltage automatic identification circuit and method |
-
2015
- 2015-11-11 CN CN201520894715.6U patent/CN205091413U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242152A (en) * | 2015-11-11 | 2016-01-13 | 成都府河电力自动化成套设备有限责任公司 | Intelligent switching value isolated acquisition unit |
| CN109406864A (en) * | 2018-11-12 | 2019-03-01 | 山东鲁能智能技术有限公司 | Distribution network terminal board remote signalling voltage automatic identification circuit and method |
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