CN204118712U - A kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit - Google Patents
A kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit Download PDFInfo
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- CN204118712U CN204118712U CN201420654050.7U CN201420654050U CN204118712U CN 204118712 U CN204118712 U CN 204118712U CN 201420654050 U CN201420654050 U CN 201420654050U CN 204118712 U CN204118712 U CN 204118712U
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Abstract
The utility model discloses a kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit, circuit, memory, key circuit, display circuit, communication interface, power module, ac analog input module, digital quantity input module, digital output module when comprising control module, A/D change-over circuit, the first photoelectric isolating circuit, the second photoelectric isolating circuit, reset circuit, clock circuit, GPS school; The utility model has the features such as perfect in shape and function, relaying configuration is flexible, reliable, easy to maintenance, expandability is good, meets the performance requirement of low-voltage variation measure and control device preferably; This device has defencive function configuration flexibly and protection exit configuration feature, simplifies the management and of protection seting value, easy to use and maintenance.
Description
Technical field
The utility model discloses a kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit, relate to technical field of circuit design.
Background technology
At present, the application of automation can be divided into the automation of transformation substations, dispatching automation, power distribution automation, electric energy metering automation and electricity market etc.Since 03 year, the power supply shortage of China, according to the statistics of national grid, power automation industry presents ever-increasing trend.Thus, the demand also sharp increase of relay protection products, and higher requirement be it is also proposed for aspects such as the performance of relay protection products, the application of new technology.And transformer is a electric equipment generally used in Automation of Electric Systems control appliance, the relay monitoring and protection of transformer is significant for the safe and reliable operation of electric power system.
Test device for relay protection be my company develop on original product basis high-intelligentization, multifunctional relay protection calibration equipment.This device adopts micro-computer technology, and be made up of single-chip microcomputer, logic control element, ac and dc current voltage output unit, high-accuracy data acquisition unit, LCD liquid crystal display, real-time clock, printer etc., certainty of measurement is high, reproducible.
Along with improving constantly of Automation of Electric Systems degree, measurement and Control Equipment for Relay Protection digitlization, intelligentized trend are day by day obvious, and have the features such as functional diversities, communication interface abundantization, high reliability and high performance index.At present; the hardware platform of conventional low protection supervisory equipment uses the multi-CPU structure of ARM+DSP+FPGA mostly; this structure can ensure the real-time of exchanges data and the reliability of defencive function, but there is the problem of the aspects such as data sharing, equipment interval expansion, clock signal synchronization, power consumption height.
Meanwhile, the most of complex structure of signal conditioning circuit of the prior art, it is large that circuit runs power consumption.
Utility model content
Technical problem to be solved in the utility model is: for the defect of prior art; a kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit is provided; there is the features such as perfect in shape and function, relaying configuration is flexible, reliable, easy to maintenance, expandability is good, meet the performance requirement of low-voltage variation measure and control device preferably.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
Based on a relay low-voltage variation measure and control device for simple and easy photoelectric isolating circuit, circuit, memory, key circuit, display circuit, communication interface, power module, ac analog input module, digital quantity input module, digital output module when comprising control module, A/D change-over circuit, the first photoelectric isolating circuit, the second photoelectric isolating circuit, reset circuit, clock circuit, GPS school;
Wherein, circuit, memory, key circuit, display circuit, communication interface, power module when control module connects A/D change-over circuit, the first photoelectric isolating circuit, the second photoelectric isolating circuit, reset circuit, clock circuit, GPS school respectively, described A/D change-over circuit is also connected with signal conditioning circuit, described first photoelectric isolating circuit is also connected with digital quantity input module, and described second photoelectric isolating circuit is also connected with digital output module;
Wherein, described signal conditioning circuit comprises first to fourth resistance, the first to the second electric capacity, operational amplifier and diode, one end of signal input connection first resistance, one end of the other end respectively with the second resistance of the first resistance, the negative pole of diode, the positive input terminal of operational amplifier is connected, the other end of the second resistance and the equal ground connection of the positive pole of diode, one end ground connection of the 3rd resistance, the other end of the 3rd resistance respectively with the negative input end of operational amplifier, one end of 4th resistance is connected, the other end of the 4th resistance is connected with the output of operational amplifier and connection signal output, the pull-up voltage end of operational amplifier is through the first capacity earth, the actuation voltage end of operational amplifier is through the second capacity earth.
As further prioritization scheme of the present utility model, the chip model that described control module adopts is OMAP5910.
As further prioritization scheme of the present utility model, the chip model of described A/D change-over circuit is TLC3578.
As further prioritization scheme of the present utility model, the chip model that described communication interface adopts is RTL8019AS.
As further prioritization scheme of the present utility model, the chip model that described first photoelectric isolating circuit adopts is EL852.
The utility model adopts above technical scheme compared with prior art, there is following technique effect: the utility model is provided with abundant defencive function, comprise Three-section strip and press off the specified time overcurrent protection of lock, syllogic overload protection, inverse-time overcurrent protection, zero-sequence current protection, unbalanced fault protection, under-voltage protection, overvoltage protection and PT again and to break alarm etc.; Protection supervisory equipment is according to modular design philosophy, by different defencive functions to being divided into independently module, modules has independently entry condition and discharge state, and each module installation has the soft pressing plate of control, can by controlling the input of soft pressing plate or withdrawing the defencive function of inking device, the setting value of each defencive function and outlet mode (tripping operation or alarm) can be configured by button or communication network; This modular design makes defencive function have extremely strong readability and transplantability, and the cooperation relation of each intermodule is clear, is conducive to the reliability improving protection.Meanwhile, simplify signal conditioning circuit further, reduce the power consumption of integrated circuit.
Accompanying drawing explanation
Fig. 1 is model calling schematic diagram of the present utility model.
Fig. 2 is the signal conditioning circuit circuit diagram improved in the utility model,
Wherein: R1 to R4 is first to fourth resistance, C1 to C2 is the first to the second electric capacity, and AR1 is operational amplifier, and Z1 is diode.
Embodiment
Be described below in detail execution mode of the present utility model, the example of described execution mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the execution mode be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
Those skilled in the art of the present technique are understandable that, the correlation module related in the utility model and the function of realization thereof are the devices of hardware after improvement and formation thereof, device or system carry computer software programs conventional in prior art or pertinent protocols just can realize, and are not improve computer software programs of the prior art or pertinent protocols.Such as, the computer hardware system after improvement still can realize the specific function of this hardware system by loading existing operation system of software.Therefore, be understandable that, innovation of the present utility model is the improvement of hardware module in prior art and connects syntagmatic, but not be only in hardware module for realizing the improvement of software or the agreement of carrying about function.
Those skilled in the art of the present technique are understandable that, the correlation module mentioned in the utility model is the one or more hardware device for performing in step in operation, method, flow process described in the application, measure, scheme.Described hardware device for required object and specialized designs and manufacture, or also can adopt the known device in all-purpose computer or other known hardware devices.Described all-purpose computer activates or reconstructs with having storage procedure Selection within it.
Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in specification of the present utility model " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or couple.Wording "and/or" used herein comprises one or more arbitrary unit listing item be associated and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the utility model.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
Model calling schematic diagram of the present utility model as shown in Figure 1, based on a relay low-voltage variation measure and control device for simple and easy photoelectric isolating circuit, circuit, memory, key circuit, display circuit, communication interface, power module, ac analog input module, digital quantity input module, digital output module when comprising control module, A/D change-over circuit, the first photoelectric isolating circuit, the second photoelectric isolating circuit, reset circuit, clock circuit, GPS school;
Wherein, circuit, memory, key circuit, display circuit, communication interface, power module when control module connects A/D change-over circuit, the first photoelectric isolating circuit, the second photoelectric isolating circuit, reset circuit, clock circuit, GPS school respectively, described A/D change-over circuit is also connected with signal conditioning circuit, described first photoelectric isolating circuit is also connected with digital quantity input module, and described second photoelectric isolating circuit is also connected with digital output module.
The signal conditioning circuit circuit diagram improved in the utility model as shown in Figure 2, wherein, described signal conditioning circuit comprises first to fourth resistance, the first to the second electric capacity, operational amplifier and diode, one end of signal input connection first resistance, one end of the other end respectively with the second resistance of the first resistance, the negative pole of diode, the positive input terminal of operational amplifier is connected, the other end of the second resistance and the equal ground connection of the positive pole of diode, one end ground connection of the 3rd resistance, the other end of the 3rd resistance respectively with the negative input end of operational amplifier, one end of 4th resistance is connected, the other end of the 4th resistance is connected with the output of operational amplifier and connection signal output, the pull-up voltage end of operational amplifier is through the first capacity earth, the actuation voltage end of operational amplifier is through the second capacity earth.
As further prioritization scheme of the present utility model, the chip model that described control module adopts is OMAP5910.Polycaryon processor OMAP5910 is the OMAP that TI company releases, Embedded dsp processor and ARM processor, DSP processor is based on TMS320C55X core, 2 multiply accumulating (MAC) unit are provided, the ALU of the ALU of 1 40 and 1 16, because DSP have employed two ALU structure, most of instruction can parallel running, its operating frequency reaches 150MHz, and power consumption is lower.Arm processor is the TI925T processor based on ARM9 core, includes the command cache of 1 16KByte and the data cache of 8KByte, 1 coprocessor, and command length can be 16 or 32.The advantages such as OMAP5910 has that integrated level is high, hardware reliability and stability is strong, data-handling capacity strong, low-power consumption.
As further prioritization scheme of the present utility model, the chip model of described A/D change-over circuit is TLC3578.Ac analog input module comprises voltage transformer, current transformer, and connection signal modulate circuit and A/D change-over circuit successively, can by the digital signal of OMAP5910 process for AC analogue signal is converted to; Digital quantity input module, for gathering the regular tap amount signals such as on-load switch position signalling, low-voltage circuit breaker position signalling, fuse blows signal, can also gather the non-electric charge quantity signallings such as grave gas action tripping operation, light gas action alarm; Digital output module is mainly used in the function such as outlet tripping operation, signal alarm of various protective device; Button and display module are mainly used in man-machine interaction; Communication module is used for communicating with Surveillance center with other smart machine.
The AC analogue signal of low-voltage variation measure and control device collection comprises three-phase and measures electric current, three-phase protective electric current, zero-sequence current and three-phase voltage; three-phase measures the linear current mutual inductor sample that electric current uses 5A/3.53V; three-phase protective current signal uses the current transformer sampling of 100A/7.07V; zero-sequence current uses the current transformer sampling of 20A/7.07V; three-phase voltage uses the voltage transformer sampling of 220V/7.07V, needs 10 road A/D ALT-CH alternate channels altogether.
The TLC3578 that A/D conversion chip uses TI company to produce, it is 8 passage 14 Bits Serial analog to digital converters, adopt single 5V analog power and 3V ~ 5V digital power to power, analog input scope is-10V ~+10V, can meet the designing requirement simultaneously connecing multiple instrument transformer completely.TLC3578 exports SDO tetra-pin compositions with the serial line interface of OMAP5910 primarily of chip selection signal, clock signal SCLK, serial date transfer SDI and tri-state serial data, / EOC end is connected to the interrupting input end of OMAP5910, produce corresponding external interrupt when the inner FIFO memory block of TLC3578 is full, trigger respective interrupt program and data are read away.
Digital quantity input module not only can gather the regular tap amount signal such as on-load switch position signalling, fuse blows signal, low-voltage circuit breaker position signalling in low-voltage power supply system, but also can gather the non-electric charge quantity signalling such as the grave gas tripping operation of low-tension transformer, light gas alarm, superhigh temperature tripping operation, high temperature alarm.This device is provided with 20 road forceful electric power digital-quantity input interface, and provides the 4 programmable non electrical quantity input interfaces for subsequent use in tunnel, is convenient to non electrical quantity Function Extension.
Digital output module adopts starting relay latching aspects; the control signal of starting relay is by nuclear control in the ARM of OMAP5910; the control signal of exit relay is by nuclear control in the DSP of OMAP5910; after only having starting relay action; the positive supply of exit relay could be opened; thus realize the partly decoupled of digital output control, avoid causing protection misoperation due to device failure.When needs export, first make the DOENH of starting relay set high level, DOENL sets low level, photoelectrical coupler EL852 conducting, starting relay action, and its normally opened contact closes, and makes+24VE be connected to+24V; Then DOOUT is set to low level, photoelectrical coupler EL852 conducting, exit relay action, its normally opened contact closes, and makes tripping operation or warning circuit conducting.
Protection supervisory equipment is provided with abundant defencive function, comprises Three-section strip and presses off the specified time overcurrent protection of lock, syllogic overload protection, inverse-time overcurrent protection, zero-sequence current protection, unbalanced fault protection, under-voltage protection, overvoltage protection and PT again and to break alarm etc.Protection supervisory equipment is according to modular design philosophy; by different defencive functions to being divided into independently module; modules has independently entry condition and discharge state; and each module installation has the soft pressing plate of control; can by controlling the input of soft pressing plate or withdrawing the defencive function of inking device, the setting value of each defencive function and outlet mode (tripping operation or alarm) can be configured by button or communication network.This modular design makes defencive function have extremely strong readability and transplantability, and the cooperation relation of each intermodule is clear, is conducive to the reliability improving protection.
As further prioritization scheme of the present utility model, the chip model that described communication interface adopts is RTL8019AS.
As further prioritization scheme of the present utility model, the chip model that described first photoelectric isolating circuit adopts is EL852.
The utility model proposes with OMAP5910 is the low-voltage variation measure and control device design of core processor, makes the hardware configuration of whole device more succinct and optimize, significantly reduces the overall power of device, improve reliability and the extensibility of device.Meanwhile, device has defencive function configuration flexibly and protection exit configuration feature, simplifies the management and of protection seting value, easy to use and maintenance.
By reference to the accompanying drawings execution mode of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from the utility model aim.The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solutions of the utility model content, according to technical spirit of the present utility model, within spirit of the present utility model and principle, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection range all still belonging to technical solutions of the utility model.
Claims (5)
1. based on a relay low-voltage variation measure and control device for simple and easy photoelectric isolating circuit, it is characterized in that: circuit, memory, key circuit, display circuit, communication interface, power module, ac analog input module, digital quantity input module, digital output module when comprising control module, A/D change-over circuit, the first photoelectric isolating circuit, the second photoelectric isolating circuit, reset circuit, clock circuit, GPS school;
Wherein, circuit, memory, key circuit, display circuit, communication interface, power module when control module connects A/D change-over circuit, the first photoelectric isolating circuit, the second photoelectric isolating circuit, reset circuit, clock circuit, GPS school respectively, described A/D change-over circuit is also connected with signal conditioning circuit, described first photoelectric isolating circuit is also connected with digital quantity input module, and described second photoelectric isolating circuit is also connected with digital output module;
Wherein, described signal conditioning circuit comprises first to fourth resistance, the first to the second electric capacity, operational amplifier and diode, one end of signal input connection first resistance, one end of the other end respectively with the second resistance of the first resistance, the negative pole of diode, the positive input terminal of operational amplifier is connected, the other end of the second resistance and the equal ground connection of the positive pole of diode, one end ground connection of the 3rd resistance, the other end of the 3rd resistance respectively with the negative input end of operational amplifier, one end of 4th resistance is connected, the other end of the 4th resistance is connected with the output of operational amplifier and connection signal output, the pull-up voltage end of operational amplifier is through the first capacity earth, the actuation voltage end of operational amplifier is through the second capacity earth.
2. a kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit according to claim 1, is characterized in that: the chip model that described control module adopts is OMAP5910.
3. a kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit according to claim 1, is characterized in that: the chip model of described A/D change-over circuit is TLC3578.
4. a kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit according to claim 1, is characterized in that: the chip model that described communication interface adopts is RTL8019AS.
5. a kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit according to claim 1, is characterized in that: the chip model that described first photoelectric isolating circuit adopts is EL852.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420654050.7U CN204118712U (en) | 2014-11-04 | 2014-11-04 | A kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420654050.7U CN204118712U (en) | 2014-11-04 | 2014-11-04 | A kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204118712U true CN204118712U (en) | 2015-01-21 |
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| CN201420654050.7U Expired - Fee Related CN204118712U (en) | 2014-11-04 | 2014-11-04 | A kind of relay low-voltage variation measure and control device based on simple and easy photoelectric isolating circuit |
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| Country | Link |
|---|---|
| CN (1) | CN204118712U (en) |
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2014
- 2014-11-04 CN CN201420654050.7U patent/CN204118712U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20171104 |