CN202076782U - Monitor protector with independent metering module - Google Patents
Monitor protector with independent metering module Download PDFInfo
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- CN202076782U CN202076782U CN2011201480455U CN201120148045U CN202076782U CN 202076782 U CN202076782 U CN 202076782U CN 2011201480455 U CN2011201480455 U CN 2011201480455U CN 201120148045 U CN201120148045 U CN 201120148045U CN 202076782 U CN202076782 U CN 202076782U
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Abstract
The utility model discloses a monitor protector with an independent metering module. The monitor protector includes a microprocessor, an electric parameter sampling unit which is electrically connected with an input interface of the microprocessor, an input circuit module, a data memory chip, a power supply module, a relay output control unit which is electrically connected with an output interface of the microprocessor, and a communication unit which is electrically connected with a communication interface of the microprocessor, and a display unit which is electrically connected with the communication unit. The input interface of the microprocessor is electrically connected with an electric energy metering unit which includes a three-phase electric energy metering chip, and an output terminal of the three-phase electric energy metering chip is electrically connected with the input interface of the microprocessor. The input interface of the three-phase electric energy metering chip is electrically connected with signal output terminals of a metering current transformer and a metering voltage transformer via metering signal conditioning circuits respectively. The advantages of the monitor protector with the independent metering module lie in that the monitor protector realizes the monitoring and protection of the electric parameter of a mine-used switch; and at the same time, the monitor protector fulfils the time sharing metering function of the power consumption, so the relay protection is integrated with the electric power metering.
Description
Technical field
The utility model relates to mining switch comprehensively monitoring protector, especially relates to the monitoring protector with independent metering module.
Background technology
At present, domestic mining switch comprehensively monitoring protector scarcely has function of measuring or has simple low precision function of measuring.Adopt measurement power that time integral is obtained meritorious and reactive power during work, therefore have that sampling precision is low, error in dipping big, can't calibrate, function of measuring is simple, continuous data such as loses at deficiency after the power down, can't reach the purpose of accurate measurement and charging.For obtaining accurate power consumption, then kilowatt-hour meter need be installed, still, at present high voltage flame proof switch has only a display window mostly under the coal mine, if protector is installed then kilowatt-hour meter can't be installed simultaneously.Along with the development of colliery electric power system, realize that electric substation's unattended operation is one of basic demand of present colliery electric power monitoring system, as realizing remote meter reading, then need to increase a cover long-distance meter-reading system.This shows, adopt kilowatt-hour meter can increase the investment and the maintenance cost of equipment undoubtedly, influence economic benefit of enterprises.
Summary of the invention
The utility model purpose is to provide a kind of monitoring protector with independent metering module that integrates relaying protection and electric-power metering.
For achieving the above object, the utility model can be taked following technical proposals:
Monitoring protector with independent metering module described in the utility model, it comprises microprocessor, be electrically connected on described microprocessor input interface the electric parameter sampling unit, open into circuit module, pin-saving chip, power module, leave control unit with the relay that is electrically connected in the microprocessor output interface, and the communication unit and the display unit that is electrically connected on this communication unit that are electrically connected on the microprocessor communication interface; Be electrically connected with the electric energy metrical unit at the microprocessor input interface; Described electric energy metrical unit comprises the three-phase electrical energy computation chip that output is electrically connected with the microprocessor input interface, and the input interface of described three-phase electrical energy computation chip is electrically connected with metering current mulual inductor and metered voltage transducer signal output by the metering signal modulate circuit respectively.
Described electric parameter sampling unit comprises the A/D change-over circuit module that output is electrically connected with the microprocessor input interface, and the input interface of described A/D change-over circuit module is electrically connected with detection current transformer and detection voltage transformer signal output part by the detection signal modulate circuit respectively.
Described relay is left control unit and is comprised the photoelectric isolation module that is electrically connected on described microprocessor output interface, and described photoelectric isolation module output is electrically connected with the relay control end.
Described display unit comprises the demonstration microprocessor that is electrically connected with described communication unit by communication circuit module, with the LCD display module that is electrically connected on described demonstration microprocessor communication interface, and be electrically connected on the LED light that shows the microprocessor output interface.
When the utility model advantage is to realize mining switch electric parameter monitored and protect, reach the time-sharing measurement function of power consumption, integrate relaying protection and electric-power metering.Possess Presentation Function and communication interface simultaneously, relay protection information and power consumption can be shown on the spot and be uploaded to Surveillance center, be beneficial to realize the general protection and the management of power use of power supply unit.And the utility model integrated level height has been avoided the overlapping investment of equipment, has reduced the cost of investment of colliery electromechanical equipment, has improved economic benefit of enterprises.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model.
Embodiment
As shown in Figure 1, monitoring protector with independent metering module described in the utility model, it comprises microprocessor, be electrically connected on described microprocessor input interface electric parameter sampling unit 1, open into circuit module, pin-saving chip, power module, leave control unit 2 with the relay that is electrically connected in the microprocessor output interface, and the communication unit 3 and the display unit 4 that is electrically connected on this communication unit that are electrically connected on the microprocessor communication interface; Be electrically connected with electric energy metrical unit 5 at the microprocessor input interface; Described electric energy metrical unit 5 comprises the three-phase electrical energy computation chip that output is electrically connected with the microprocessor input interface, and the input interface of described three-phase electrical energy computation chip is electrically connected with metering current mulual inductor and metered voltage transducer signal output by the metering signal modulate circuit respectively.
Described electric parameter sampling unit 1 comprises the A/D change-over circuit module that output is electrically connected with the microprocessor input interface, and the input interface of described A/D change-over circuit module is electrically connected with detection current transformer and detection voltage transformer signal output part by the detection signal modulate circuit respectively.Electric parameters such as the voltage of controlled switch, electric current insert the utility model analog quantity input terminal by an instrument transformer conversion of switch back, be converted to small signal through described detection current transformer, detection voltage transformer, send into A/D change-over circuit module after signal conditioning circuit filtering after testing, the amplification and finish analog-to-digital conversion, the digital value after the conversion is sent into microprocessor.
Simultaneously, the voltage of controlled switch, electric current is connected to metering analog quantity input terminal of the present utility model after an instrument transformer conversion, metering current mulual inductor in described electric energy metrical unit 5 and metered voltage instrument transformer are small signal with the voltage and current conversion of signals of feeding switch, by delivering to three-phase electrical energy computation chip after the described metering signal modulate circuit conditioning filtering, voltage signal is converted to corresponding digital signal after signal amplification and analog to digital conversion, then, after the high pass filter filtering DC component and digital integration of current signal in current channel, multiply each other with voltage signal through phasing, produce instantaneous power, each phase power addition obtains total three-phase instantaneous active power, communication interface through three-phase electrical energy computation chip is delivered to microprocessor, microprocessor is according to gaining merit that three-phase electrical energy computation chip is sent, idle, apparent power and default calculation of parameter such as period contingency table go out crest, popin, continuous datas such as day part electric weight such as trough and current electric quantity reading, and write in the pin-saving chip that power down do not lose, according to the default time interval so that power down re-powers the continuous data in the sense data storage chip of back and continues accumulative total on this basis.
Described relay is left control unit 2 and is comprised the photoelectric isolation module that is electrically connected on described microprocessor output interface, and described photoelectric isolation module output is electrically connected with the relay control end.Switching values such as the position signalling of switch, energy storage signal through opening circuit module isolation and level conversion after deliver to microprocessor.Microprocessor calculates the electrical quantity data of gathering, and according to calculated value, default definite value with open into conditions such as amount signals and monitor and protect.As determine fault and produce and to need the tripping switch, then send sub-gate signal and leave control unit 2 through relay and finish sub-switching operation switch by microprocessor; Microprocessor carries out data interaction and control operation by the order that communication unit 3 receives on the CAN bus or display unit 4 sends.Display unit 4 regularly carries out exchanges data by communication unit 3 and microprocessor and shows on the LCD display module, or sends by LED light and to report to the police and protection information is indicated.
Claims (4)
1. monitoring protector with independent metering module, it comprises microprocessor, be electrically connected on described microprocessor input interface electric parameter sampling unit (1), open into circuit module, pin-saving chip, power module, leave control unit (2) with the relay that is electrically connected in the microprocessor output interface, and be electrically connected on the communication unit (3) of microprocessor communication interface and be electrically connected on the display unit (4) of this communication unit; It is characterized in that: be electrically connected with electric energy metrical unit (5) at the microprocessor input interface; Described electric energy metrical unit (5) comprises the three-phase electrical energy computation chip that output is electrically connected with the microprocessor input interface, and the input interface of described three-phase electrical energy computation chip is electrically connected with metering current mulual inductor and metered voltage transducer signal output by the metering signal modulate circuit respectively.
2. according to the described monitoring protector of claim 1 with independent metering module; it is characterized in that: described electric parameter sampling unit (1) comprises the A/D change-over circuit module that output is electrically connected with the microprocessor input interface, and the input interface of described A/D change-over circuit module is electrically connected with detection current transformer and detection voltage transformer signal output part by the detection signal modulate circuit respectively.
3. according to claim 1 or 2 described monitoring protectors with independent metering module; it is characterized in that: described relay is left control unit (2) and is comprised the photoelectric isolation module that is electrically connected on described microprocessor output interface, and described photoelectric isolation module output is electrically connected with the relay control end.
4. according to claim 1,2 or 3 described monitoring protectors with independent metering module; it is characterized in that: described display unit (4) comprises the demonstration microprocessor that is electrically connected with described communication unit by communication circuit module; with the LCD display module that is electrically connected on described demonstration microprocessor communication interface, and be electrically connected on the LED light that shows the microprocessor output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201480455U CN202076782U (en) | 2011-05-11 | 2011-05-11 | Monitor protector with independent metering module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201480455U CN202076782U (en) | 2011-05-11 | 2011-05-11 | Monitor protector with independent metering module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076782U true CN202076782U (en) | 2011-12-14 |
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ID=45114859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201480455U Expired - Lifetime CN202076782U (en) | 2011-05-11 | 2011-05-11 | Monitor protector with independent metering module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076782U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105527A (en) * | 2013-01-16 | 2013-05-15 | 黄健华 | Indoor electricity power detection device and method |
| CN104280604A (en) * | 2014-11-06 | 2015-01-14 | 珠海格力电器股份有限公司 | Alternating current power testing device |
| CN106526314A (en) * | 2016-12-09 | 2017-03-22 | 惠州市丝鹭新能源科技有限公司 | Metering module special for charging pile |
| CN112557943A (en) * | 2020-11-13 | 2021-03-26 | 国网天津市电力公司 | Low-voltage switch system based on double current transformers |
-
2011
- 2011-05-11 CN CN2011201480455U patent/CN202076782U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105527A (en) * | 2013-01-16 | 2013-05-15 | 黄健华 | Indoor electricity power detection device and method |
| CN104280604A (en) * | 2014-11-06 | 2015-01-14 | 珠海格力电器股份有限公司 | Alternating current power testing device |
| CN106526314A (en) * | 2016-12-09 | 2017-03-22 | 惠州市丝鹭新能源科技有限公司 | Metering module special for charging pile |
| CN112557943A (en) * | 2020-11-13 | 2021-03-26 | 国网天津市电力公司 | Low-voltage switch system based on double current transformers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |
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| CX01 | Expiry of patent term |