CN203932975U - Universal microcomputer protective device - Google Patents
Universal microcomputer protective device Download PDFInfo
- Publication number
- CN203932975U CN203932975U CN201320709631.1U CN201320709631U CN203932975U CN 203932975 U CN203932975 U CN 203932975U CN 201320709631 U CN201320709631 U CN 201320709631U CN 203932975 U CN203932975 U CN 203932975U
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- China
- Prior art keywords
- module
- circuit
- protection
- microprocessor
- protective device
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- Expired - Lifetime
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- 230000001681 protective effect Effects 0.000 title claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- 230000006870 function Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses a kind of simple in structure, stable and the protection of assembly line road, capacitor protection, tranformer protection and motor protection function in the universal microcomputer protective device of one.The utility model comprises control module, power module and the sampling module being connected with power module with described control module respectively, open into module, output module, operational module, communication module and human-computer interface module, described control module is connected with described power module, described control module comprises microprocessor, secondary power supply module and the start-up circuit being connected with described secondary power supply module with described microprocessor respectively, clock circuit, memory and frequency measurement circuit, described microprocessor is connected with described secondary power supply module, described microprocessor comprises CPU and the route protection module being connected with described CPU, capacitor protection module, tranformer protection module and protective module for electric machines.The utility model can be applicable to protecting electrical power system field.
Description
Technical field
The utility model relates to a kind of protective device being applied in electric power system, relates in particular to a kind of route protection, capacitor protection, tranformer protection and motor protection function gathered in the universal microcomputer protective device of one.
Background technology
High speed development along with socioeconomic continuous progress and science and technology; in current electric power system; the effect of microcomputer protecting device is also more and more important, and wherein the quantity of line protective devices, capacitor protector, protection equipment for transformer, motor protecting device accounts for the overwhelming majority.Yet; also do not have in the prior art a kind of above-mentioned four kinds of functional devices to be merged to a set of general microcomputer protecting device on a hardware platform; normal conditions are to be respectively these above-mentioned four kinds of defencive functions to design respectively corresponding protective device, i.e. line protective devices, capacitor protector, protection equipment for transformer, motor protecting device.Yet; in actual production process; as get the raw materials ready, the link such as stock, debugging all needs a set of maintenance process separately; Here it is, and designer need to meticulously compare respectively and then select four kinds of suitable protective devices when design; this measure not only consumes a large amount of time and manpower; and raw-material cost needs to prepare multiple acknowledgment copy during safeguarding, make like this design, produce, debugging, the cost safeguarded be higher, inefficiency.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art; aim to provide a kind of simple in structurely, stable and in one, reduce productions, maintenance cost cost by set route protection, capacitor protection, tranformer protection and motor protection function, improve the universal microcomputer protective device of producing process efficiencies such as getting the raw materials ready, debug flow process, one-tenth Analysis of Nested Design, operation maintenance.
The technical scheme that the utility model adopts is: the utility model comprises control module, power module and the sampling module being connected with power module with described control module respectively, open into module, output module, operational module, communication module and human-computer interface module, described control module is connected with described power module, described control module comprises microprocessor, secondary power supply module and the start-up circuit being connected with described secondary power supply module with described microprocessor respectively, clock circuit, memory and frequency measurement circuit, described microprocessor is connected with described secondary power supply module, described microprocessor comprises CPU and the route protection module being connected with described CPU, capacitor protection module, tranformer protection module and protective module for electric machines.
Further, described microprocessor also comprises two-way analog to digital converter ADC, universal input and output port GPIO, serial port SPI, ether controller, FLASH memory, clock module, asynchronous serial port and the timer being connected with described CPU.
Further, described sampling module comprises AC sampling module and direct current sampling module, described AC sampling module comprises interconnective voltage/current instrument transformer and second-order low-pass filter circuit, described second-order low-pass filter circuit is electrically connected to described two-way analog to digital converter ADC, described direct current sampling module comprises voltage/current sample circuit, optocoupler and the voltage follower circuit connecting successively, and described voltage follower circuit is electrically connected to described two-way analog to digital converter ADC.
Further, described operational module comprises separating brake control loop, combined floodgate control loop, separating brake self-hold circuit, combined floodgate self-hold circuit, divide-shut brake interlock circuit, long-range commutation circuit and nearly control interface circuit.
The beneficial effects of the utility model are: the utility model combines route protection, capacitor protection, tranformer protection and electric motor protecting ardware feature, tradition is adopted to a set of general hardware platform of the comprehensive one-tenth of protective device of separately design, again by the combination with software kit, this hardware platform can be common in actual production and operation process, as get the raw materials ready, the link such as processing, stock, debugging and maintenance, so not only make to reduce design cost, and general acknowledgment copy also can further save the cost of raw material, meet economy principle; In addition, four kinds of defencive functions are integrated on a set of hardware platform and are also conducive to the comprehensive control to the production and operation, when reducing production waste, also further improved actual production efficiency, simplified actual production operation.
Accompanying drawing explanation
Fig. 1 is structural representation figure of the present utility model;
Fig. 2 is the structural representation of control module in the utility model;
Fig. 3 is the structural representation of microprocessor in the utility model;
Fig. 4 is the structural representation of AC sampling module in the utility model;
Fig. 5 is the structural representation of direct current sampling module in the utility model.
Embodiment
As Figure 1-5, the utility model comprises control module 1, power module 2 and the AC sampling module 3 being connected with power module 2 with described control module 1 respectively, direct current sampling module 4, open into module 5, output module 6, operational module 7, communication module 8 and human-computer interface module 9, described control module 1 comprises microprocessor 11, secondary power supply module 12 and the start-up circuit 13 being connected with described secondary power supply module 12 with described microprocessor 11 respectively, clock circuit 14, memory 15 and frequency measurement circuit 16, described microprocessor 11 is connected with described secondary power supply module 12, described microprocessor 11 comprises CPU111 and the route protection module 112 being connected with described CPU111, capacitor protection module 113, tranformer protection module 114 and protective module for electric machines 115, described microprocessor 11 also comprises two-way analog to digital converter ADC116, universal input and output port GPIO117, serial port SPI118, ether controller 119, FLASH memory 120, clock module 121, asynchronous serial port 122 and the timer 123 being connected with described CPU111, described power module 2 converts external power source AC220V to inner 24V, positive and negative 12V, the various voltages that 5V etc. need, and connect other functional modules, described AC sampling module 3 comprises interconnective voltage/current instrument transformer 31 and second-order low-pass filter circuit 32, described second-order low-pass filter circuit 32 is electrically connected to described two-way analog to digital converter ADC116, described direct current sampling module 4 comprises the voltage/current sample circuit 41 connecting successively, optocoupler 42 and voltage follower circuit 43, described voltage follower circuit 43 is electrically connected to described two-way analog to digital converter ADC116, be responsible for direct current signal being isolated and being converted to the small-signal in ADC measuring range, described opening isolated switching value signal be converted to the level digital signal of universal input and output port GPIO117 into module 5, the described module 6 of outputing connects described universal input and output port GPIO117, isolation also will be outputed signal power and amplify, to drive relay contact closure, form external path, described operational module 7 comprises separating brake control loop, combined floodgate control loop, separating brake self-hold circuit, combined floodgate self-hold circuit, divide-shut brake interlock circuit, long-range commutation circuit and nearly control interface circuit, described operational module 7 connects described universal input and output port GPIO117, isolation is also transformed into power switch control interface by order, described communication module 8 comprises RS485 interface circuit, RS232 interface circuit, ethernet interface circuit, described communication module 8 connects described asynchronous serial port 122, ether controller 119, described human-computer interface module 9 connects described universal input and output port GPIO117, described human-computer interface module 9 adopts liquid crystal display interface, the order that described human-computer interface module 9 receives from described microprocessor 11, can show various supplemental characteristics and oscillogram, vectogram, keypad can allow operating personnel input various parameters simultaneously, realize human-computer interaction function, described memory 15 connects described serial port SPI118, its capacity reaches 8MB, interface is SPI, described frequency measurement circuit 16 connects described AC sampling module 3 and described universal input and output port GPIO117, each generation saltus step all can produce interruption, calculated rate in interrupting, the time in sampling interval that then produces next cycle.
Practical work process of the present utility model is as follows: the alternating current voltage frequency that described microprocessor 11 obtains by described frequency measurement circuit 16, and take the cycle in sampling time that this frequency is next cycle.Every passage does not have 32 points of periodic sampling, the DC quantity of simultaneously sampling input channel, and described microprocessor 11 detects intake once every 2ms, and using modified fast fourier transform obtains electric characteristic amount; Integrated quadruplet defencive function in the utility model, user can set in configuration menu.Operation timer is outputed module or operational module is done protection operation according to set to select corresponding protection algorithm to carry out fault judgement and fast guarded command is delivered to.Meanwhile, failure condition is sent to control centre by communication module.Operations staff can use man-machine interface to check definite value, parameter are set, and checks historical data, fault data.
The utility model can be applicable to the special-purpose relaying protection of the ring main unit field of electric power system.
Claims (4)
1. a universal microcomputer protective device, it is characterized in that: described universal microcomputer protective device comprises control module (1), power module (2) and the sampling module being connected with power module (2) with described control module (1) respectively, open into module (5), output module (6), operational module (7), communication module (8) and human-computer interface module (9), described control module (1) is connected with described power module (2), described control module (1) comprises microprocessor (11), secondary power supply module (12) and the start-up circuit (13) being connected with described secondary power supply module (12) with described microprocessor (11) respectively, clock circuit (14), memory (15) and frequency measurement circuit (16), described microprocessor (11) is connected with described secondary power supply module (12), described microprocessor (11) comprises CPU(111) and with described CPU(111) the route protection module (112) that is connected, capacitor protection module (113), tranformer protection module (114) and protective module for electric machines (115).
2. universal microcomputer protective device according to claim 1, is characterized in that: described microprocessor (11) also comprises and described CPU(111) the two-way analog to digital converter ADC(116 that is connected), universal input and output port GPIO(117), serial port SPI(118), ether controller (119), FLASH memory (120), clock module (121), asynchronous serial port (122) and timer (123).
3. universal microcomputer protective device according to claim 2, it is characterized in that: described sampling module comprises AC sampling module (3) and direct current sampling module (4), described AC sampling module (3) comprises interconnective voltage/current instrument transformer (31) and second-order low-pass filter circuit (32), described second-order low-pass filter circuit (32) and described two-way analog to digital converter ADC(116) be electrically connected to, described direct current sampling module (4) comprises the voltage/current sample circuit (41) connecting successively, optocoupler (42) and voltage follower circuit (43), described voltage follower circuit (43) and described two-way analog to digital converter ADC(116) be electrically connected to.
4. universal microcomputer protective device according to claim 1, is characterized in that: described operational module (7) comprises separating brake control loop, combined floodgate control loop, separating brake self-hold circuit, combined floodgate self-hold circuit, divide-shut brake interlock circuit, long-range commutation circuit and nearly control interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320709631.1U CN203932975U (en) | 2013-11-12 | 2013-11-12 | Universal microcomputer protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320709631.1U CN203932975U (en) | 2013-11-12 | 2013-11-12 | Universal microcomputer protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203932975U true CN203932975U (en) | 2014-11-05 |
Family
ID=51828730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320709631.1U Expired - Lifetime CN203932975U (en) | 2013-11-12 | 2013-11-12 | Universal microcomputer protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203932975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377829A (en) * | 2014-11-21 | 2015-02-25 | 烟台科大正信电气有限公司 | Novel DTU and FTU power distribution terminal hardware platform based on Cortex-M3 kernel |
-
2013
- 2013-11-12 CN CN201320709631.1U patent/CN203932975U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377829A (en) * | 2014-11-21 | 2015-02-25 | 烟台科大正信电气有限公司 | Novel DTU and FTU power distribution terminal hardware platform based on Cortex-M3 kernel |
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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: 20141105 |