CN107065645A - A kind of electric power safety control system - Google Patents
A kind of electric power safety control system Download PDFInfo
- Publication number
- CN107065645A CN107065645A CN201710079608.1A CN201710079608A CN107065645A CN 107065645 A CN107065645 A CN 107065645A CN 201710079608 A CN201710079608 A CN 201710079608A CN 107065645 A CN107065645 A CN 107065645A
- Authority
- CN
- China
- Prior art keywords
- module
- resistance
- signal input
- control system
- electric capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004891 communication Methods 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 238000005516 engineering process Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000009123 feedback regulation Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
Abstract
The invention discloses a kind of electric power safety control system, including controller, protective current signal input module, voltage signal input module, data signal input module, wireless communication module, analog output module and PLC technology output module, the controller connects protective current signal input module respectively, measure current signal discrepancy module, voltage signal input module, data signal input module, Temperature Humidity Sensor, wireless communication module, analog output module, PLC technology output module, alarm signal output module, electric-magnetic lock signal output module and alarm relay module.Electric power safety control system of the present invention provides a kind of multi-functional electric power safety control system; the production of switch cabinet intelligence protection measuring control device and the construction of communication network on-the-spot are simplified, workload of the switch cubicle in links such as production, test, installation, debugging and maintenances is greatly lowered.
Description
Technical field
The present invention relates to a kind of control system, specifically a kind of electric power safety control system.
Background technology
The epoch maked rapid progress in current Automation of Electric Systems levels, the automatic makeup applied to power system
Put, system it is more and more, function becomes increasingly complex；For example：Microcomputer protective relay device, Intelligent control apparatus, Intelligent Measure and Control Instrument,
Humiture automatic controller, contact temperature measurement system etc.；This provides strong for security, the reliability of electric power system and its equipment
Big support.But, these substantial amounts of equipment cause problems applied to a power switch cabinet simultaneously：First, it is a variety of
Device is required for gathering identical signal, such as, microcomputer protective relay device, Intelligent control apparatus and Intelligent Measure and Control Instrument, they
Three-phase voltage and current signal, status signal will be gathered, the algorithm stressed by each of which provides different for switch cubicle
Measurement, monitoring and defencive function, cause the workload of design, production, detection and the maintenance of switch to be multiplied；Secondly as
These smart machines both provide communication interface, are the communication of these equipment so as to Centralized Monitoring, generally are intended to set for each class
Standby to lay one or more communication networks, this make it that site operation workload is huge, the reduction of communication system reliability, and Maintenance Difficulty is significantly
Lifting；Again, smart machine will be generally arranged on the instrument door of switch cubicle, and what the appearance and size switched was to determine, instrument
The size of door is also fairly limited；Going out for increasing smart machine is aobvious so that the installation process on their switch cubicles is developed into
Picture mosaic challenge；To the integrated of switch cubicle smart machine, as mainstream demand.
The content of the invention
It is an object of the invention to provide a kind of electric power safety control system, with asking for solving to propose in above-mentioned background technology
Topic.
To achieve the above object, the present invention provides following technical scheme：
A kind of electric power safety control system, including controller, protective current signal input module, voltage signal input mould
Block, data signal input module, wireless communication module, analog output module and PLC technology output module, the control
Device connects protective current signal input module, measurement current signal discrepancy module, voltage signal input module, data signal respectively
Input module, Temperature Humidity Sensor, wireless communication module, analog output module, PLC technology output module, alarm signal
Output module, electric-magnetic lock signal output module and alarm relay module；
The voltage signal input module include resistance R1, electric capacity C1, diode D1, triode VT1, triode VT2 and
Electric capacity C2, described electric capacity C1 one end connects input signal Vi, and the electric capacity C1 other ends connect resistance R1, resistance R2 and triode respectively
VT1 base stages, the resistance R1 other ends connect resistance R3, resistance R5 and power supply VCC, resistance R3 other ends difference connecting triode respectively
VT1 colelctor electrodes and triode VT2 base stages, triode VT2 colelctor electrodes connect the resistance R5 other ends and electric capacity C3 respectively, and electric capacity C3 is another
One end connects output end vo, resistance R7 and electric capacity C4, resistance R7 other ends connection diode D1 negative poles, diode D1 positive poles respectively
The connection resistance R2 other ends and electric capacity C2, electric capacity the C2 other end connect resistance R4, resistance R6 and the electric capacity C4 other ends respectively respectively
And be grounded, resistance R4 other end connecting triode VT1 emitter stages, the resistance R6 other ends connecting triode VT2 emitter stages.
It is used as further scheme of the invention：The controller model TMS320F206.
It is used as further scheme of the invention：The decoder model ispLSI1016.
It is used as further scheme of the invention：The drive circuit uses chip 74HC244.
It is used as further scheme of the invention：The D/A converting circuit uses high-performance analog-digital chip AD669.
It is used as further scheme of the invention：The optical coupling isolation circuit uses TLP521-4 photoelectrical couplers.
It is used as further scheme of the invention；The D/A converting circuit is changed using 7 road D/A, wherein the conversion of 4 tunnels is logical
The connection voltage power amplifying circuit of low-pass filter circuit 1 is crossed, the conversion of 3 tunnels connects current power by low-pass filter circuit 2 and amplified
Circuit.
Compared with prior art, the beneficial effects of the invention are as follows：Electric power safety control system of the present invention provides a kind of many work(
The electric power safety control system of energy, simplifies the production of switch cabinet intelligence protection measuring control device and the construction of communication network on-the-spot,
Workload of the switch cubicle in links such as production, test, installation, debugging and maintenances is greatly lowered；Overcome the life of current switch cabinet
Because intelligent monitoring device category and quantity are various during production, test, installation, debugging, this big problem of maintenance workload；Especially
It is that the competition of current power equipment is more and more fierce, optimizes design, manufacture, test, installation, debugging and the maintenance cost of switch cubicle,
The reliability of raising system, is a shortcut for improving device fabrication enterprise competitiveness.
Brief description of the drawings
Fig. 1 is the circuit structure block diagram of electric power safety control system；
Fig. 2 is the schematic block circuit diagram of electric power safety control system repeat circuit protection module；
Fig. 3 is the circuit diagram of voltage signal input module in electric power safety control system.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer in Fig. 1~3, the embodiment of the present invention, a kind of electric power safety control system, including controller, protective current
Signal input module, voltage signal input module, data signal input module, wireless communication module, analog output module and
PLC technology output module, the controller connects protective current signal input module, measurement current signal discrepancy mould respectively
Block, voltage signal input module, data signal input module, Temperature Humidity Sensor, wireless communication module, analog output mould
Block, PLC technology output module, alarm signal output module, electric-magnetic lock signal output module and alarm relay module；
The voltage signal input module include resistance R1, electric capacity C1, diode D1, triode VT1, triode VT2 and
Electric capacity C2, described electric capacity C1 one end connects input signal Vi, and the electric capacity C1 other ends connect resistance R1, resistance R2 and triode respectively
VT1 base stages, the resistance R1 other ends connect resistance R3, resistance R5 and power supply VCC, resistance R3 other ends difference connecting triode respectively
VT1 colelctor electrodes and triode VT2 base stages, triode VT2 colelctor electrodes connect the resistance R5 other ends and electric capacity C3 respectively, and electric capacity C3 is another
One end connects output end vo, resistance R7 and electric capacity C4, resistance R7 other ends connection diode D1 negative poles, diode D1 positive poles respectively
The connection resistance R2 other ends and electric capacity C2, electric capacity the C2 other end connect resistance R4, resistance R6 and the electric capacity C4 other ends respectively respectively
And be grounded, resistance R4 other end connecting triode VT1 emitter stages, the resistance R6 other ends connecting triode VT2 emitter stages.Control
Device model TMS320F206 processed.Decoder model ispLSI1016.Drive circuit uses chip 74HC244.Digital-to-analogue conversion
Circuit uses high-performance analog-digital chip AD669.Optical coupling isolation circuit uses TLP521-4 photoelectrical couplers.Digital-to-analogue conversion electricity
Road is changed using 7 road D/A, wherein the conversion of 4 tunnels connects voltage power amplifying circuit by low-pass filter circuit 1, the conversion of 3 tunnels passes through
Low-pass filter circuit 2 connects current power amplifying circuit.
The present invention operation principle be：Referring to Fig. 1, protective current signal input module, voltage signal input module, number
Word signal input module monitors voltage transformer, privacy protection current transformer and state sensing in power supply unit in real time
The signal of device output, electric power system failure is recognized according to relay protective scheme and can be in instantaneous trip trouble point, so as to realize pair
The circuit protection of switch cubicle.
Protective current signal input module, voltage signal input module, the voltage transformer in data signal input module,
The signal of special measurement current transformer output is sampled, and is measured and is calculated：Frequency, voltage and current virtual value, it is active
The information such as power, reactive power, phase angle, power factor, each harmonic content, active electrical degree amount, idle electricity.
Analog output module can with large format dynamic simulation drawing in the form of reflection switch cubicle in each breaker and
The conjunction isloation state of disconnecting link, carries out human body processing safety monitoring in real time, completes mode of operation switching and on the spot divide-shut brake, temperature
Humidity sensor refers to the output signal of the temperature sensor installed by monitoring in real time in switch cubicle and humidity sensor,
Start electric-magnetic lock signal output module if necessary, so that the heater of outside, ventilating fan are driven, so as to realize in switch cubicle certainly
Dynamic temperature humidity regulation.
Referring to Fig. 2, each circuit signal of switching value, and testing result is transmitted to controller, controller is to detection
As a result analyzed and processed, when protection device has problem, problem is fed back to controller by controller, exported and reported by controller
Alert, when protection device has no problem, controller, which continues through the circuits such as controller, decoder, drive circuit, to be continued to protection
Device sends various detection signals.
Referring to Fig. 3, input signal Vi is sent to VT1 base stages through electric capacity C1, exported after amplification from VT1 colelctor electrodes, then by VT2
Further amplification, is then exported from VT2 colelctor electrodes；When output end vo signal is positive half cycle, diode D1 can not be turned on, when defeated
When going out to hold Vo signals for negative half period, D1 conductings, output end vo voltage charges through resistance R7, diode D1 to electric capacity C2, electric capacity C2
On fill it is negative under positive voltage, the upper negative voltages of C2 are sent to VT1 base stage through R2, are superimposed with the original base voltages of VT1, VT1
Base voltage slightly has reduction.Feedback procedure is as follows：If input signal Vi amplitudes are very big, after the signal amplifies through VT1 and VT2, from
The signal amplitude of VT2 collector outputs also increases, i.e. the negative half period amplitude of output end signal also increases, through resistance R7 and two poles
The upper negative lower positive voltage that pipe D1 fills to electric capacity C2 is very high, i.e. negative voltage is very low on electric capacity C2, and C2 very low upper negative voltages pass through
It is many that R2 declines VT1 base voltages, declines VT1 amplifying powers, and VT1 amplitude output signals reduce, and VT2 output signals also subtract
It is small, so that the signal of output end vo returns to normal amplitude；If input signal Vi amplitude very littles, feedback regulation process with it is above-mentioned
Process is on the contrary, can equally make the signal of output end vo return to normal amplitude.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (7)
1. a kind of electric power safety control system, including controller, protective current signal input module, voltage signal input module,
Data signal input module, wireless communication module, analog output module and PLC technology output module, it is characterised in that
The controller connect respectively protective current signal input module, measurement current signal come in and go out module, voltage signal input module,
Data signal input module, Temperature Humidity Sensor, wireless communication module, analog output module, PLC technology output module,
Alarm signal output module, electric-magnetic lock signal output module and alarm relay module；
The voltage signal input module includes resistance R1, electric capacity C1, diode D1, triode VT1, triode VT2 and electric capacity
C2, described electric capacity C1 one end connects input signal Vi, and the electric capacity C1 other ends connect resistance R1, resistance R2 and triode VT1 respectively
Base stage, the resistance R1 other ends connect resistance R3, resistance R5 and power supply VCC, resistance R3 other ends difference connecting triode VT1 respectively
Colelctor electrode and triode VT2 base stages, triode VT2 colelctor electrodes connect the resistance R5 other ends and electric capacity C3 respectively, and electric capacity C3 is another
Connection output end vo, resistance R7 and electric capacity C4, resistance the R7 other end connect diode D1 negative poles, diode D1 positive poles point respectively at end
Not Lian Jie the resistance R2 other ends and electric capacity C2, the electric capacity C2 other ends connect resistance R4, resistance R6 and the electric capacity C4 other ends simultaneously respectively
Ground connection, resistance R4 other end connecting triode VT1 emitter stages, the resistance R6 other ends connecting triode VT2 emitter stages.
2. electric power safety control system according to claim 1, it is characterised in that the controller model
TMS320F206。
3. electric power safety control system according to claim 1, it is characterised in that the decoder model
ispLSI1016。
4. electric power safety control system according to claim 1, it is characterised in that the drive circuit uses chip
74HC244。
5. electric power safety control system according to claim 1, it is characterised in that the D/A converting circuit uses high property
Can analog-digital chip AD669.
6. electric power safety control system according to claim 1, it is characterised in that the optical coupling isolation circuit is used
TLP521-4 photoelectrical couplers.
7. electric power safety control system according to claim 1, it is characterised in that the D/A converting circuit uses 7 tunnels
D/A is changed, wherein the conversion of 4 tunnels connects voltage power amplifying circuit by low-pass filter circuit 1, the conversion of 3 tunnels passes through LPF
Circuit 2 connects current power amplifying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079608.1A CN107065645A (en) | 2017-01-24 | 2017-01-24 | A kind of electric power safety control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079608.1A CN107065645A (en) | 2017-01-24 | 2017-01-24 | A kind of electric power safety control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107065645A true CN107065645A (en) | 2017-08-18 |
Family
ID=59598487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710079608.1A Pending CN107065645A (en) | 2017-01-24 | 2017-01-24 | A kind of electric power safety control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107065645A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414890A (en) * | 2018-01-26 | 2018-08-17 | 国家电网公司 | A kind of power circuit abnormity early warning device |
-
2017
- 2017-01-24 CN CN201710079608.1A patent/CN107065645A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414890A (en) * | 2018-01-26 | 2018-08-17 | 国家电网公司 | A kind of power circuit abnormity early warning device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102967742B (en) | The electric mutual inductor of wide current detection range | |
| CN105811584A (en) | Intelligent transformation method of conventional substation | |
| CN104104456A (en) | Low-voltage detection device | |
| CN105471096A (en) | Micro-network intelligent monitoring system based on multiple heterogeneous information fusion technology | |
| CN202025032U (en) | Electronic mutual inductor with on-line state monitoring | |
| CN103683507B (en) | Distributed generation micro-grid control and electric energy quality monitoring integrated device and method | |
| CN105262062A (en) | Power switch cabinet protection system | |
| CN104701979A (en) | Protective measurement and control integrated device and protective measurement and control method | |
| CN103616616A (en) | Fault detection method for large-scale grounding grid | |
| CN206281924U (en) | A kind of distribution power automation terminal DC earthing on-line monitoring system | |
| CN105606897A (en) | Branch insulating impedance monitoring and PV power generation method, inverter and PV power generation system | |
| CN107065645A (en) | A kind of electric power safety control system | |
| CN205724924U (en) | Electric load balance self-checking device | |
| CN104765302A (en) | Detection device for power supply system of substation routing inspection device | |
| CN104142648B (en) | Urban track traffic low-voltage distribution system control terminal | |
| CN203929928U (en) | The anti-isolated island energy of a kind of grid-connected converter force checking device | |
| CN106685083A (en) | Intelligent power distribution terminal and method capable of implementing power utilization behavior analysis of charging pile | |
| CN107370128A (en) | A kind of SCM Based power protection system | |
| CN205178643U (en) | Integrated device is observed and controled in protection | |
| Yu et al. | Design and Application of Distributed Feeder Automation Simulation Test Platform | |
| CN207456479U (en) | A kind of fiber Bragg grating (FBG) demodulator | |
| CN204495472U (en) | High voltage isolation switch contact infrared array temperature detection monitoring system | |
| CN104460459A (en) | Intelligent agricultural drainage meter | |
| CN201563005U (en) | Protective measurement and control and electrical contact online temperature detecting integrated device | |
| CN204044567U (en) | A kind of urban track traffic low-voltage distribution system control terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170818 |
|
| WD01 | Invention patent application deemed withdrawn after publication |