CN201466694U - Micro-relay protection automation measuring and control device based on composite structure of DSP and MCU - Google Patents
Micro-relay protection automation measuring and control device based on composite structure of DSP and MCU Download PDFInfo
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- CN201466694U CN201466694U CN2009200968445U CN200920096844U CN201466694U CN 201466694 U CN201466694 U CN 201466694U CN 2009200968445 U CN2009200968445 U CN 2009200968445U CN 200920096844 U CN200920096844 U CN 200920096844U CN 201466694 U CN201466694 U CN 201466694U
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Abstract
The utility model relates to a micro-relay protection automation measuring and control device based on the composite structure of a DSP (Digital Signal Processor) and a MCU (micro-programmed control unit). The utility model adopts the scheme that by adopting the dual CPU structure formed through the composition of the DSP and the MCU, a DSP and a MCU systems are mutually independent, the communication between the DSP and the MCU is performed through a serial communication mode, and the protection function of the comprehensive automation device can not be affected in case of failure of the MCU unit. At the same time, the reasonable function division is realized, the program is separated from other function programs to operate separately, the DSP only completes the work related to the protection function, other work such as electric quantity measurement, system management and man-machine interface is assumed by the MCU, the burden and the software complexity of the DSP protection unit, the interference of non-protection work to the protection work is avoided, and the reliability and real-time performance of the protection function of the device and the reliability of products are enhanced.
Description
[technical field]
The utility model relates to substation equipment monitoring and the comprehensive automation device of protecting; particularly a kind of CPU that distributes rationally, with the reliability that improves the comprehensive automation device and real-time based on the supervisory control of substation of DSP and MCU composite construction and the comprehensive automation device of protection.
[background technology]
Miniature measurement and Control Equipment for Relay Protection is a kind of comprehensive automation protective device that is applicable to the equipment protection of transformer station's wall.At present, known miniature measurement and Control Equipment for Relay Protection, the acp chip of system (being CPU) adopts single DSP structure mostly, or adopts the dual-cpu structure of DSP and single-chip microcomputer, realizes the functions such as protection, measurement, monitoring, communication and man-machine interaction to equipment.Because single-chip microcomputer only finishes the human interface function, and DSP should finish defencive function and finishes monitoring function again, so the DSP task is heavy, has increased the risk of dsp operation fault, has reduced the reliability of comprehensive automation device.
[utility model content]
The purpose of this utility model is in order to overcome the deficiencies in the prior art; and provide a kind of miniature relaying protection automation measurement and control equipment based on DSP and MCU composite construction; this device adopts DSP and MCU composite construction; in conjunction with both advantages; the reasonable disposition systemic-function reaches the purpose of the reliability that improves the comprehensive automation device.
The utility model be address the above problem the scheme that is adopted be the design a kind of miniature relaying protection automation measurement and control equipment based on DSP and MCU composite construction.This device comprises: housing and control circuit is characterized in that described circuit is the dual-CPU system that DSP and MCU form by the RS232 internal communication; Described DSP, handles and computing the data of gathering by photoelectric isolation module collection protection remote signals by protection measuring-signal unit collecting device protection electric current and voltage again, then through photoelectric isolation module output remote signal; The FRAM that links to each other with DSP is used for store non-volatile data, and power down is not lost; The CAN bus is used for carrying out communication with superior system; Described MCU passes through the measuring-signal unit to the measurement of equipment electric current and voltage signals collecting, gather with remote signals measuring by photoelectric isolation module, again the data of gathering are handled and computing, finish measurement function, and control MMI man-machine interface unit display result, finish system management and man-machine interaction by systems soft ware again; System clock output shows the required time; Described DSP and MCU adopt the internal communication pattern to carry out communication, and the protection result that DSP will handle also sends MCU to and shows when carrying out, and MCU gathers the protection current signal simultaneously, with comparing that DSP gathers, realize that two CPU examine mutually.
Described DSP unit comprises a DSP digital signal processor TMS320LF2407A, four TA current transformers, four TV voltage transformers and 14 photoelectric isolation modules; The electric current and voltage of the protection usefulness that described DSP unit is gathered converts small-signal input dsp chip to by TA, TV isolation.The remote signal that DSP sends is divided into two-way, and one tunnel control alarm relay action is finished protection and reported to the police, and one tunnel control operation mechanism action is finished the protection tripping operation.
Described MCU unit comprises a MCU single-chip microcomputer C8051F021, four TA current transformers, four TV voltage transformers, 2 photoelectric isolation modules, LCD LCD and touch-screen; The measuring electric current and voltage that described MCU unit is gathered, isolate and convert small-signal input MCU chip to through TA, TV module, remote signals is through photoelectric isolation module input MCU chip, and MCU shows measurement result by LCD LCD after electric current and voltage is calculated.
The beneficial effects of the utility model are:
By adopting DSP and the compound dual-cpu structure of MCU, DSP and MCU system are separate, and both only get in touch by serial communication mode, if the defencive function that the MCU element failure can not influence the comprehensive automation device takes place.Realized rational function division simultaneously; defence program separates single-row operation with other function program; DSP only finishes the work relevant with defencive function; other electrical measurement; system management and man-machine interface work etc. are born by MCU, have alleviated the burden and the software complexity of DSP protected location, have avoided the interference of other non-protective work to protection work; improved the reliability and the real-time of unit protection function, and reliability of products.MCU adopts the digital-to-analogue hybrid device, itself contains high-precision A/D converting unit, has simplified circuit, has improved the antijamming capability and the reliability of hardware.DSP and MCU detect selected guard signal, by comparative analysis, can differentiate the normal operating conditions of DSP and MCU, realize that two CPU examine mutually, in time find fault and warning, have improved the whole system reliability.
[description of drawings]
Fig. 1 is the miniature measurement and Control Equipment for Relay Protection theory diagram based on DSP and MCU composite construction;
Fig. 2 is the internal structure schematic diagram of device;
Fig. 3-1 is the circuit theory diagrams of DSP unit to 3-4;
Fig. 4-1 is the circuit theory diagrams of MCU unit to 4-3.
Below in conjunction with embodiment of the present utility model, and be described in detail with reference to accompanying drawing.
[embodiment]
This device is the comprehensive automation protective device that is applicable to the equipment protection of transformer station's wall, the internal structure vertical view of this device as shown in Figure 2, wherein 1 is touch-screen, the 2nd, LCD, 1 and 2 belong to the man-machine interface unit.The 3rd, front panel, the 4th, mainboard is mainly used in each feature board of connection, and the 5th, interface slot, the 6th, outlet port unit, the 7th, DSP protects control unit, the 8th, MCU measure-controlling unit, the 9th, device main casing.
Figure 1 shows that the theory diagram of this device dual-CPU system.Defencive function is mainly finished in the DSP unit among the figure, gathers the remote signals and the protection measuring-signal of protection usefulness; Remote signals is a switching value, and the high optocoupler of use efficiency of transmission is sent into dsp chip and handled after carrying out the photoelectricity isolation; The protection measuring-signal is an analog quantity, and working voltage instrument transformer and current transformer are with the secondary AC Signal Spacing and be converted to small-signal, send into dsp chip and handle; The result that DSP will handle is undertaken delivering to the outlet remote control unit after photoelectricity is isolated by optocoupler, and the tripping operation of complete operation mechanism, closing operation and anti-jump function realize equipment protection is controlled.Measurement and functions such as monitoring, system management and man-machine interface are mainly finished in the MCU unit, gathering measuring measuring-signal is analog quantity, working voltage instrument transformer and current transformer are with the secondary AC Signal Spacing and be converted to small-signal, after sending into the MCU chip and handling, electric parameters such as the voltage that the control liquid crystal display displays is measured, electric current, power, power factor realize measuring and monitoring function; System management and human interface function are realized in conjunction with man-machine interface device (LCD and touch-screen) by systems soft ware.In addition, DSP and MCU adopt serial communication to get in touch; MCU gathers the protection measuring-signal simultaneously, compares with the DSP collection result, and the realization two-shipper is examined mutually, in case find fault, in time provides alarm signal.MMI for user's browsing information, revises that parameter is provided with etc. as user interface.The FRAM ferroelectric memory is preserved definite value, coefficient and configuration, guarantees that these parameters are not revised by mistake and can power down keep.The CAN external communication interface, device is uploaded device state information, service data and Trouble Report by the CAN data/address bus; Receive higher level's control command, realize that distant place online modification definite value and input withdraw from all kinds of defencive functions.
DSP unit schematic diagram shown in accompanying drawing 3-1 to 3-4, Fig. 3-the 1st, analog quantity and switch acquisition module .OPT106 are optocouplers, TV is a voltage transformer. Fig. 3-the 2nd, CAN communication module, U8 are CAN transceiver (selecting PCA82C250 for use), and U6, U7 are opto-coupler chips; Fig. 3-the 3rd, intercommunication and ferroelectric memory module, U4 is ferroelectric memory chip (selecting FM25L16 for use), U5 is intercommunication interface chip (selecting MAX3232 for use), U1 is core devices DSP (selecting TMS320LF2407A for use) among Fig. 3-4, the TA current transformer module is at the MCU feature board in addition, both connect (below repeat no more) by mainboard. analog quantity with the TA current transformer, the TV voltage transformer is with the AC signal isolation and be converted to small-signal, pass through filter circuit, send into U1 and carry out analog-to-digital conversion, carry out computing again; The remote signalling amount is carried out the photoelectricity isolation by OPT106, sends into the U1 computing through signal holding circuit and filter circuit again; U1 delivers to outlet port unit with result calculated-switching value, realizes the automation protection control to equipment.
MCU unit schematic diagram shown in accompanying drawing 4-1 to 4-3, Fig. 4-the 1st, analogue collection module, TA are current transformers; U2 is intercommunication interface chip (selecting MAX3232 for use) among Fig. 4-2, and U3 is real-time timepiece chip (selecting DS12887 for use), and U4 is touch screen interface chip (selecting AD7843A for use); U1 is core devices MCU (selecting C8051F021 for use) among Fig. 4-3.Analog quantity is isolated AC signal with TA current transformer, TV voltage transformer and is converted to small-signal, by filter circuit, sends into the U1 chip and carries out analog-to-digital conversion, again by the U1 computing; Remote signalling amount electrical energy pulse signal is sent into the U1 computing by signal holding circuit and filter circuit; U1 will finish the measurement monitoring function to equipment by control liquid crystal display screen display result.MCU connects touch-screen by U5, finishes man-machine interaction.
Claims (4)
1. the miniature relaying protection automation measurement and control equipment based on DSP and MCU composite construction comprises housing and control circuit, it is characterized in that described circuit is the dual-CPU system that DSP and MCU form by the RS232 internal communication; Described DSP, handles and computing the data of gathering by photoelectric isolation module collection protection remote signals by protection measuring-signal unit collecting device protection electric current and voltage again, then through photoelectric isolation module output remote signal; The FRAM that links to each other with DSP is used for store non-volatile data, and power down is not lost; The CAN bus is used for carrying out communication with superior system; Described MCU passes through the measuring-signal unit to the measurement of equipment electric current and voltage signals collecting, gather with remote signals measuring by photoelectric isolation module, again the data of gathering are handled and computing, finish measurement function, and control MMI man-machine interface unit display result, finish system management and man-machine interaction by systems soft ware again; System clock output shows the required time; Described DSP and MCU adopt the internal communication pattern to carry out communication, and the protection result that DSP will handle also sends MCU to and shows when carrying out, and MCU gathers the protection current signal simultaneously, with comparing that DSP gathers, realize that CPU examines mutually.
2. according to the described miniature relaying protection automation measurement and control equipment of claim 1 based on DSP and MCU composite construction, it is characterized in that described DSP unit comprises a DSP digital signal processor TMS 320LF2407A, four TA current transformers, four TV voltage transformers and 14 photoelectric isolation modules; The electric current and voltage of the protection usefulness that described DSP unit is gathered converts small-signal input dsp chip to by TA, TV isolation.
3. according to claim 1 or 2 described miniature relaying protection automation measurement and control equipment based on DSP and MCU composite construction; it is characterized in that the remote signal that described DSP sends is divided into two-way; one tunnel control alarm relay action is finished protection and is reported to the police, and one tunnel control operation mechanism action is finished the protection tripping operation.
4. according to claim 1 or 2 described miniature relaying protection automation measurement and control equipment based on DSP and MCU composite construction, it is characterized in that described MCU unit comprises a MCU single-chip microcomputer C8051F021, four TA current transformers, four TV voltage transformers, 2 photoelectric isolation modules, LCD LCD and touch-screen; The measuring electric current and voltage that described MCU unit is gathered, isolate and convert small-signal input MCU chip to through TA, TV module, remote signals is through photoelectric isolation module input MCU chip, and MCU shows measurement result by LCD LCD after electric current and voltage is calculated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200968445U CN201466694U (en) | 2009-05-22 | 2009-05-22 | Micro-relay protection automation measuring and control device based on composite structure of DSP and MCU |
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| CN2009200968445U CN201466694U (en) | 2009-05-22 | 2009-05-22 | Micro-relay protection automation measuring and control device based on composite structure of DSP and MCU |
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| CN201466694U true CN201466694U (en) | 2010-05-12 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157961A (en) * | 2011-03-02 | 2011-08-17 | 云南电力试验研究院(集团)有限公司 | Micro-net control device |
| CN102508454A (en) * | 2011-12-14 | 2012-06-20 | 天津港保税区益诚电力设备有限公司 | Micro relay protection automatic measurement and control device with electronic identity recognition function |
| CN102929242A (en) * | 2012-11-06 | 2013-02-13 | 天津港保税区益诚电力设备有限公司 | Visualization micro relay protection automation measuring and controlling device |
| CN104184120A (en) * | 2014-09-11 | 2014-12-03 | 南自晋能自动化有限公司 | High-performance transformer protection device |
| CN105571624A (en) * | 2016-03-21 | 2016-05-11 | 成都天进仪器有限公司 | Intelligent power grid transformer substation relay protection tester with good heat dissipation |
| CN105572433A (en) * | 2016-03-21 | 2016-05-11 | 成都天进仪器有限公司 | Intelligent transformer substation relay protection tester shell |
| CN105606853A (en) * | 2016-03-28 | 2016-05-25 | 成都天进仪器有限公司 | Flip-type intelligent station digital protection tester |
| CN105606938A (en) * | 2016-03-21 | 2016-05-25 | 成都天进仪器有限公司 | Smart power grid transformer station relay protection tester with various communication functions |
| CN105629115A (en) * | 2016-03-21 | 2016-06-01 | 成都天进仪器有限公司 | Voltage source smart power grid substation relay protection tester |
| CN105676042A (en) * | 2016-03-28 | 2016-06-15 | 成都天进仪器有限公司 | Intelligent relay protection tester with novel assembly structure |
| CN105785181A (en) * | 2016-03-21 | 2016-07-20 | 成都天进仪器有限公司 | Intelligent industrial-control-type substation relay protection tester housing |
| CN105785179A (en) * | 2016-03-21 | 2016-07-20 | 成都天进仪器有限公司 | Easy-to-assemble smart grid substation relay protection tester |
| CN105823942A (en) * | 2016-03-28 | 2016-08-03 | 成都天进仪器有限公司 | Industrial control intelligent relay protection test device having novel assembly structure |
| CN107589369A (en) * | 2017-09-04 | 2018-01-16 | 安徽科盟电子科技有限公司 | A kind of intelligent monitoring protection device for preventing breaker from malfunctioning |
-
2009
- 2009-05-22 CN CN2009200968445U patent/CN201466694U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157961A (en) * | 2011-03-02 | 2011-08-17 | 云南电力试验研究院(集团)有限公司 | Micro-net control device |
| CN102508454A (en) * | 2011-12-14 | 2012-06-20 | 天津港保税区益诚电力设备有限公司 | Micro relay protection automatic measurement and control device with electronic identity recognition function |
| CN102929242A (en) * | 2012-11-06 | 2013-02-13 | 天津港保税区益诚电力设备有限公司 | Visualization micro relay protection automation measuring and controlling device |
| CN104184120A (en) * | 2014-09-11 | 2014-12-03 | 南自晋能自动化有限公司 | High-performance transformer protection device |
| CN105629115A (en) * | 2016-03-21 | 2016-06-01 | 成都天进仪器有限公司 | Voltage source smart power grid substation relay protection tester |
| CN105572433A (en) * | 2016-03-21 | 2016-05-11 | 成都天进仪器有限公司 | Intelligent transformer substation relay protection tester shell |
| CN105606938A (en) * | 2016-03-21 | 2016-05-25 | 成都天进仪器有限公司 | Smart power grid transformer station relay protection tester with various communication functions |
| CN105571624A (en) * | 2016-03-21 | 2016-05-11 | 成都天进仪器有限公司 | Intelligent power grid transformer substation relay protection tester with good heat dissipation |
| CN105785181A (en) * | 2016-03-21 | 2016-07-20 | 成都天进仪器有限公司 | Intelligent industrial-control-type substation relay protection tester housing |
| CN105785179A (en) * | 2016-03-21 | 2016-07-20 | 成都天进仪器有限公司 | Easy-to-assemble smart grid substation relay protection tester |
| CN105606853A (en) * | 2016-03-28 | 2016-05-25 | 成都天进仪器有限公司 | Flip-type intelligent station digital protection tester |
| CN105676042A (en) * | 2016-03-28 | 2016-06-15 | 成都天进仪器有限公司 | Intelligent relay protection tester with novel assembly structure |
| CN105823942A (en) * | 2016-03-28 | 2016-08-03 | 成都天进仪器有限公司 | Industrial control intelligent relay protection test device having novel assembly structure |
| CN105676042B (en) * | 2016-03-28 | 2018-02-13 | 成都天进仪器有限公司 | A kind of intelligent relay-protection tester for possessing package assembly |
| CN105606853B (en) * | 2016-03-28 | 2018-02-16 | 成都天进仪器有限公司 | Cover-turning type intelligent station digital protecting tester |
| CN105823942B (en) * | 2016-03-28 | 2018-02-16 | 成都天进仪器有限公司 | A kind of industry control intelligence relay-protection tester for possessing Novel assembling structure |
| CN107589369A (en) * | 2017-09-04 | 2018-01-16 | 安徽科盟电子科技有限公司 | A kind of intelligent monitoring protection device for preventing breaker from malfunctioning |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |