CN106356826A - Intelligent resistor cabinet control device and control method thereof - Google Patents
Intelligent resistor cabinet control device and control method thereof Download PDFInfo
- Publication number
- CN106356826A CN106356826A CN201510414371.9A CN201510414371A CN106356826A CN 106356826 A CN106356826 A CN 106356826A CN 201510414371 A CN201510414371 A CN 201510414371A CN 106356826 A CN106356826 A CN 106356826A
- Authority
- CN
- China
- Prior art keywords
- microcontroller
- signal
- resistor
- controlling device
- intelligent controlling
- 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
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to a resistor cabinet control device, in particular to an intelligent resistor cabinet control device and a control method thereof. The intelligent resistor cabinet control device comprises an information monitoring mechanism, an information processing mechanism, an executing mechanism, an information feedback mechanism and a power circuit, wherein the information monitoring mechanism comprises a CT current measuring circuit, a resistor disc temperature measuring circuit and an environment temperature and humidity measuring circuit, and is connected with the information processing mechanism; the executing mechanism is connected with the control mechanism; and the information feedback mechanism is connected with the information processing mechanism. The intelligent resistor cabinet control device is high in measurement and control precision and stable in measurement and control, and is seldom affected by environment temperature and electromagnetic interference.
Description
Technical field
The present invention relates to resistor box control device, particularly to a kind of resistor box intelligent controlling device and its control method.
Background technology
In AC network, particularly adopt resistance eutral grounding increasingly extensive with the network of cable power supply.Transformer neutral point earthing resistance cabinet is the complete grounding apparatus including grounding transformer, it is mountable to power plant auxiliary system, electric substation's electric power system, in industrial and mining establishment's distribution system, realize the system operation mode that these electrical networks adopt Neutral Grounding through Resistance in Electrical.
In three-phase line one is mutually grounded, and capacitance current will be had to flow through short dot, when this electric current is less, does not typically do a lot of damage it is allowed to operate with failure a period of time for electric power system, to ensure the reliability powered.But when electric power system is very big, and capacitance current is also larger, when one-phase short-circuit current occurs, system overvoltage can be caused due to reasons such as central point variations.So after transformer central point connects resistance, fixed center point voltage can be forced, simultaneously because resistance is for the damping action of overvoltage, fault overvoltage level can be reduced.So, when the capacitance current of electric power system is more than 10a, just it is contemplated that setting central point resistance.
Transformer neutral point earthing resistance cabinet be applied to system neutral adopt small resistor or resistance eutral grounding occasion.Now, electrical network occurs need to tripping immediately during singlephase earth fault excision faulty line.When single-phase earthing in electrical network, earth resistance provides additional current in resistance property to earth point, makes earth current be in capacitance-resistance property, thus ensureing that the overvoltage producing is less than 2.6 times of phase voltage.
In China's 3～35kv electric power system, most of is isolated neutral system, and the power supply mode of this system easily produces arc grounding over-voltage and phase fault when single-phase-to-ground current is larger, causes great harm to power supply unit., in running, the change of barrier immediate current and temperature is very greatly it is necessary to be monitored for some reason for resistor box.With the quickening of Chinese Urbanization progress, the application of low resistance grounding mode is more and more extensive.Installing intelligent controller has become a kind of trend of neutral-point grounding resistance cabinet now, increasing user requires to install intelligent monitoring and controlling device in resistor box additional now, because if its temperature of neutral-point grounding resistance cabinet longtime running can raise, now preferably need fan and blower fan carries out automatic temperature-control and the detailed information such as monitoring temperature humidity size of current at any time, thus ensureing the safe and stable operation of system.
Content of the invention
It is an object of the invention to provide a kind of Measure Precision is high, by ambient temperature and electromagnetic interference influence is little, observing and controlling is stable resistor box intelligent controlling device and its control method.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals:
A kind of resistor box intelligent controlling device, including: information monitoring mechanism, information processing mechanism, actuator, feedback of the information mechanism and power circuit, described information monitor control mechanism includes ct current measurement circuit, resistor disc temperature measuring circuit, ambient temperature and humidity measuring circuit, described information monitor control mechanism is connected with described information processing mechanism, described actuator is connected with described controlling organization, and described information feedback mechanism is connected with described information processing mechanism.
Further, described information process part includes lcd display, microcontroller and button.
Further, described actuator includes heater relay, blower fan relay, grounding alarm relay, electrical resistance overheats alarm relay, resistance interruption alarm relay.
Further, described information feedback system is by rs485 communicating circuit.
Further, described ambient temperature and humidity measuring circuit adopts high-precision digital sensor as input signal.
Further, described resistor disc temperature measuring circuit can connect two kinds of temperature sensors: thermocouple sensor or infrared sensor or both use simultaneously, wherein infrared sensor is converted into 4-20ma signal input to resistor disc temperature measuring circuit.
Further, described ct current measurement circuit, resistor disc temperature measuring circuit, ambient temperature and humidity measuring circuit are all connected with described information processing mechanism by signal selector.
Further, described ct current measurement circuit comprises four diodes, three resistance, three electric capacity, and wherein said three electric capacity, one of resistance are arranged on ground path.
Further, described resistor disc temperature measuring equipment comprises two signal amplifiers, and described two signal amplifiers are connected to two different signal selectors.
The control method step being applied to the present invention is as follows:
(1) operator by the button on microcontroller calibration monitoring device after to microcontroller Input Monitor Connector parameter；
(2) when monitoring device monitors resistance interruption, signal inputs microcontroller by ct current measurement circuit, and microcontroller sends signal to resistive short alarm relay thus starting resistive short alarm device by resistance interruption alarm relay outlet line；
(3) when monitoring device monitors that line-to-ground electric current is excessive, signal inputs microcontroller by ct current measurement circuit, and microcontroller sends signal thus starting earthing alarm unit by resistance interruption alarm relay outlet line to grounding alarm alarm relay；
(4) resistor disc temperature sensor monitors resistor disc temperature be translated into microcontroller discernible signal, signal sends microcontroller to by resistor disc temperature measuring circuit again, when temperature reaches arrange parameter, microcontroller sends signal enabling blower fan by blower fan relay outlet line to blower fan relay；
(5) resistor disc temperature sensor monitors resistor disc temperature be translated into microcontroller discernible signal, signal sends microcontroller to by resistor disc temperature measuring circuit again, when temperature reaches arrange parameter, microcontroller sends signal enabling alarm device by electrical resistance overheats alarm relay outlet line to electrical resistance overheats alarm relay；
(6) environment humidity sensor monitoring of environmental humiture be translated into microcontroller discernible signal, signal sends microcontroller to by ambient temperature and humidity measuring circuit, when temperature reaches arrange parameter, microcontroller sends signal enabling blower fan by blower fan relay outlet line to blower fan relay；
(7) environment humidity sensor monitoring of environmental humiture be translated into microcontroller discernible signal, signal sends microcontroller to by ambient temperature and humidity measuring circuit, when humidity reaches arrange parameter, microcontroller sends signal enabling heater by heater relay outlet line to heater relay；
(8) system information is fed back to background monitoring room by rs485 communicating circuit by microcontroller.
The invention has the beneficial effects as follows: this resistor box intelligent controlling device is that a Measure Precision is high, by ambient temperature and electromagnetic interference influence is little, observing and controlling is stable resistor box intelligent controlling device.It passes through the electric current of resistor disc and the temperature of resistor disc with microcontroller as core by measurement, according to preset alarm value, starts corresponding load and warning output, thus can guarantee that earthing resistance cabinet system is normally run.
Brief description
Fig. 1 is the structural representation of resistor box intelligent controlling device；
Fig. 2 is the operation schematic diagram of resistor box intelligent controlling device；
Fig. 3 is ct current measurement circuit, resistor disc temperature measuring circuit, ambient temperature and humidity measuring circuit structural representation.
Wherein: 1-ct current measurement circuit, 2- resistor disc temperature measuring circuit, 3- ambient temperature and humidity measuring circuit, 4-lcd display, 5- microcontroller, 6- button, 7-rs485 communicating circuit, 8- heater relay, 9- blower fan relay, 10- grounding alarm relay, 11- temperature alarm relay, 12- breaking alarming relay.
Specific embodiment
With reference to embodiment and accompanying drawing, technical scheme is described in further detail.
As shown in Figure 1, a kind of resistor box intelligent controlling device, including: information monitoring mechanism, information processing mechanism, actuator, feedback of the information mechanism and power circuit, described information monitor control mechanism includes ct current measurement circuit 1, resistor disc temperature measuring circuit 2, ambient temperature and humidity measuring circuit 3, described information monitor control mechanism is connected with described information processing mechanism, described actuator is connected with described controlling organization, and described information feedback mechanism is connected with described information processing mechanism.
Further, described information process part includes lcd display 4, microcontroller 5 and button 6.
Further, described actuator includes heater relay 8, blower fan relay 9, grounding alarm relay 10, electrical resistance overheats alarm relay 11, resistance interruption alarm relay 12.
Further, described information feedback system is by rs485 communicating circuit 7.
Further, described ambient temperature and humidity measuring circuit 3 adopts high-precision digital sensor as input signal.
Further, described resistor disc temperature measuring circuit 2 can connect two kinds of temperature sensors: thermocouple sensor or infrared sensor or both use simultaneously, wherein infrared sensor is converted into 4-20ma signal input to resistor disc temperature measuring circuit.
Further, described ct current measurement circuit 1, resistor disc temperature measuring circuit 2, ambient temperature and humidity measuring circuit 3 are all connected with described information processing mechanism by signal selector.
Further, described ct current measurement circuit 1 comprises four diodes, three resistance, three electric capacity, and wherein said three electric capacity, one of resistance are arranged on ground path.
Further, described resistor disc temperature measuring equipment 2 comprises two signal amplifiers, and described two signal amplifiers are connected to two different signal selectors.
The control method step being applied to the present invention is as follows:
(1) operator by the button on microcontroller calibration monitoring device after to microcontroller Input Monitor Connector parameter；
(2) when monitoring device monitors resistance interruption, signal inputs microcontroller by ct current measurement circuit, and microcontroller sends signal to resistive short alarm relay thus starting resistive short alarm device by resistance interruption alarm relay outlet line；
(3) when monitoring device monitors that line-to-ground electric current is excessive, signal inputs microcontroller by ct current measurement circuit, and microcontroller sends signal thus starting earthing alarm unit by resistance interruption alarm relay outlet line to grounding alarm relay；
(4) resistor disc temperature sensor monitors resistor disc temperature be translated into microcontroller discernible signal, signal sends microcontroller to by resistor disc temperature measuring circuit again, when temperature reaches arrange parameter, microcontroller sends signal enabling blower fan by blower fan relay outlet line to blower fan relay；
(5) resistor disc temperature sensor monitors resistor disc temperature be translated into microcontroller discernible signal, signal sends microcontroller to by resistor disc temperature measuring circuit again, when temperature reaches arrange parameter, microcontroller sends signal enabling alarm device by electrical resistance overheats alarm relay outlet line to electrical resistance overheats alarm relay；
(6) environment humidity sensor monitoring of environmental humiture be translated into microcontroller discernible signal, signal sends microcontroller to by ambient temperature and humidity measuring circuit, when temperature reaches arrange parameter, microcontroller sends signal enabling blower fan by blower fan relay outlet line to blower fan relay；
(7) environment humidity sensor monitoring of environmental humiture be translated into microcontroller discernible signal, signal sends microcontroller to by ambient temperature and humidity measuring circuit, when humidity reaches arrange parameter, microcontroller sends signal enabling heater by heater relay outlet line to heater relay；
(8) system information is fed back to background monitoring room by rs485 communicating circuit by microcontroller.
The invention has the beneficial effects as follows: this resistor box intelligent controlling device is that a Measure Precision is high, by ambient temperature and electromagnetic interference influence is little, observing and controlling is stable resistor box intelligent controlling device.It passes through the electric current of resistor disc and the temperature of resistor disc with microcontroller as core by measurement, according to preset alarm value, starts corresponding load and warning output, thus can guarantee that earthing resistance cabinet system is normally run.
It will be apparent to those skilled in the art that specific embodiment can be clearly understood that by described above.The present invention is not restricted to this, all technological thoughts according to the present invention, the different changes done on the basis of technical scheme, each falls within protection scope of the present invention.
Claims (10)
1. a kind of resistor box intelligent controlling device, it is characterized in that, including: information monitoring mechanism, information processing mechanism, actuator, feedback of the information mechanism and power circuit, described information monitor control mechanism includes ct current measurement circuit (1), resistor disc temperature measuring circuit (2), ambient temperature and humidity measuring circuit (3), described information monitor control mechanism is connected with described information processing mechanism, described actuator is connected with described controlling organization, and described information feedback mechanism is connected with described information processing mechanism.
2. resistor box intelligent controlling device according to claim 1 is it is characterised in that described information process part includes lcd display (4), microcontroller (5) and button (6).
3. resistor box intelligent controlling device according to claim 1, it is characterized in that, described actuator includes heater relay (8), blower fan relay (9), grounding alarm relay (10), electrical resistance overheats alarm relay (11), resistance interruption alarm relay (12).
4. resistor box intelligent controlling device according to claim 1 is it is characterised in that described information feedback system is by rs485 communicating circuit (7).
5. resistor box intelligent controlling device according to claim 1 is it is characterised in that described ambient temperature and humidity measuring circuit (3) adopts high-precision digital sensor as input signal.
6. resistor box intelligent controlling device according to claim 1, it is characterized in that, described resistor disc temperature measuring circuit (2) can connect two kinds of temperature sensors: thermocouple sensor or infrared sensor or both use simultaneously, wherein infrared sensor is converted into 4-20ma signal input to resistor disc temperature measuring circuit.
7. resistor box intelligent controlling device according to claim 1, it is characterized in that, described ct current measurement circuit (1), resistor disc temperature measuring circuit (2), ambient temperature and humidity measuring circuit (3) are all connected with described information processing mechanism by signal selector.
8. it is characterised in that described ct current measurement circuit (1) comprises four diodes, three resistance, three electric capacity, wherein said three electric capacity, one of resistance are arranged on ground path resistor box intelligent controlling device according to claim 7.
9. it is characterised in that described resistor disc temperature measuring equipment (2) comprises two signal amplifiers, described two signal amplifiers are connected to two different signal selectors to resistor box intelligent controlling device according to claim 7.
10. the control method of the resistor box intelligent controlling device described in a kind of any claim for claim 1-8, its rate-determining steps is as follows:
Operator by the button on microcontroller calibration monitoring device after to microcontroller (5) Input Monitor Connector parameter；
When monitoring device monitors resistance interruption, signal inputs microcontroller (5) by ct current measurement circuit (1), and microcontroller (5) sends enabling signal to resistance interruption alarm relay (12)；
When monitoring device monitors that line-to-ground electric current is excessive, signal inputs microcontroller (5) by ct current measurement circuit (1), and microcontroller (5) sends enabling signal to grounding alarm relay (10)；
When resistor disc temperature, ambient temperature and humidity reach preset value, microprocessor (5) sends signal enabling heater relay (8), blower fan relay (9)；
When resistor disc temperature, ambient temperature and humidity reach warning preset value, microprocessor (5) sends signal enabling temperature alarm relay (11)；
System information is fed back to background monitoring room by rs485 communicating circuit (7) by microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414371.9A CN106356826A (en) | 2015-07-15 | 2015-07-15 | Intelligent resistor cabinet control device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414371.9A CN106356826A (en) | 2015-07-15 | 2015-07-15 | Intelligent resistor cabinet control device and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106356826A true CN106356826A (en) | 2017-01-25 |
Family
ID=57842338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510414371.9A Pending CN106356826A (en) | 2015-07-15 | 2015-07-15 | Intelligent resistor cabinet control device and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106356826A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817387A (en) * | 2017-11-29 | 2018-03-20 | 国网上海市电力公司 | A kind of resistor box intellectual monitoring protection device and its method |
| CN108957198A (en) * | 2018-08-28 | 2018-12-07 | 广东电网有限责任公司 | Low-voltage distribution station monitoring device and system |
| CN112965555A (en) * | 2021-01-29 | 2021-06-15 | 福建丰意电气设备有限公司 | High-voltage board humiture monitoring system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113272Y (en) * | 2007-08-22 | 2008-09-10 | 深圳市华力特电气股份有限公司 | Neutral point grounding resistance cabinet |
| CN203883448U (en) * | 2014-03-13 | 2014-10-15 | 深圳市申海机电设备有限公司 | Middle-voltage grounding resistor cabinet control circuit |
-
2015
- 2015-07-15 CN CN201510414371.9A patent/CN106356826A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113272Y (en) * | 2007-08-22 | 2008-09-10 | 深圳市华力特电气股份有限公司 | Neutral point grounding resistance cabinet |
| CN203883448U (en) * | 2014-03-13 | 2014-10-15 | 深圳市申海机电设备有限公司 | Middle-voltage grounding resistor cabinet control circuit |
Non-Patent Citations (1)
| Title |
|---|
| HTTPS://WENKU.BAIDU.COM: ""电阻柜智能监控装置说明书-保定市伊诺尔电气"", 《百度文库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817387A (en) * | 2017-11-29 | 2018-03-20 | 国网上海市电力公司 | A kind of resistor box intellectual monitoring protection device and its method |
| CN108957198A (en) * | 2018-08-28 | 2018-12-07 | 广东电网有限责任公司 | Low-voltage distribution station monitoring device and system |
| CN112965555A (en) * | 2021-01-29 | 2021-06-15 | 福建丰意电气设备有限公司 | High-voltage board humiture monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103985617B (en) | A kind of Intelligent fuse | |
| US20100217546A1 (en) | Methods and Apparatuses for Detecting Faults in Electrical Power Systems | |
| JPH06506101A (en) | Remote programmable electronic trip system | |
| US11211787B2 (en) | Electrical protection circuit breaker | |
| KR20100132316A (en) | Apparatus and method for controling power quality with a blackbox, and apparatus for analyzing consumption of electric power by load | |
| CN106356826A (en) | Intelligent resistor cabinet control device and control method thereof | |
| CN205051433U (en) | Resistance cabinet intelligent control device | |
| CN204610337U (en) | A kind of fire inspection cooling blower fault pre-alarming device | |
| CN103580007A (en) | Intelligent frame controller | |
| CN105186457B (en) | Motor Protective Device | |
| KR20170051984A (en) | Before using electrical short circuit resistance measuring device for applying distribution board | |
| CN207638172U (en) | A kind of intelligent power distribution equipment | |
| CN204314684U (en) | A kind of temperature of high-tension switch cabinet supervisory system based on PLC | |
| CN207662965U (en) | A kind of resistor box intellectual monitoring protective device | |
| CN106505547A (en) | A kind of parallel medium resistance device | |
| CN211603523U (en) | Secondary voltage loop abnormity parallel detection device based on current injection method | |
| CN202133471U (en) | Infrared temperature monitoring device for switchgear | |
| CN214375972U (en) | Take infrared temperature monitoring type moulded case circuit breaker controller | |
| CN218502956U (en) | Intelligent control system for resistance heating thermal desorption | |
| CN206147042U (en) | Emergency diesel electric gennerator set insulation monitoring and warning device | |
| KR20010037932A (en) | A variable load testing apparatus | |
| CN214669519U (en) | Direct current ground fault simulation device of transformer substation | |
| CN210693449U (en) | Adjustable neutral point grounding small resistance system | |
| CN203630645U (en) | Electric heating control system of electrostatic precipitator in thermal power plant | |
| CN204718641U (en) | Switch cubicle ECU composite monitoring device and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170125 |
|
| WD01 | Invention patent application deemed withdrawn after publication |