CN105301343A - Power monitoring system of three phase power supply - Google Patents
Power monitoring system of three phase power supply Download PDFInfo
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- CN105301343A CN105301343A CN201510597034.8A CN201510597034A CN105301343A CN 105301343 A CN105301343 A CN 105301343A CN 201510597034 A CN201510597034 A CN 201510597034A CN 105301343 A CN105301343 A CN 105301343A
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Abstract
The invention discloses a power monitoring system of a three phase power supply. The system comprises a power monitoring center, an intelligent power monitoring device and a front-end monitoring device. The front-end monitoring device comprises a current monitoring device, a voltage monitoring device, a temperature monitoring device and an arclight monitoring device. The intelligent power monitoring device comprises a signal input interface, a signal pre-processing module, a main control module, a signal output interface, a memory, a timer, a control panel, an audible and visual alarm and a serial port expansion chip. The power monitoring system of the three phase power supply can monitor the basic parameters of current, voltage and the like at the same time, can monitor temperature and arclight, and has the advantages of comprehensive functions and good monitoring effect.
Description
Technical field
The present invention relates to a kind of power monitoring system of three-phase supply.
Background technology
Power equipment has a wide range of applications in the every field of society, in order to ensure the safety by electric line, to electric line or also grid nodes to carry out electric power monitoring extremely important.
Three-phase supply tool in industrial power supply has a wide range of applications, and commercial power safety is extremely important, thus be sought after one can complete function, the power monitoring system that efficiency is high.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of power monitoring system of three-phase supply, while can supporting that the underlying parameter such as electric current, voltage is monitored, go back the monitoring of support temperature, arclight, complete function, monitoring effect is good simultaneously.
The object of the invention is to be achieved through the following technical solutions: a kind of power monitoring system of three-phase supply, comprise power monitoring center, intelligent electric power monitoring device and front end monitoring equipment, described front end monitoring equipment comprises current monitoring equipment, voltage monitoring equipment, temperature monitoring equipment and arclight monitoring equipment;
Described intelligent electric power monitoring device comprises signal input interface, signal pre-processing module, main control module, signal output interface, storer, timer, control panel, audible-visual annunciator and serial port extended chip; The output terminal of described signal input interface is connected with signal pre-processing module, and the deferent segment of signal pre-processing module is connected with main control module, and the output terminal of main control module is connected with signal output interface and audible-visual annunciator respectively; Described main control module is also connected with storer, timer, control panel and serial port extended chip respectively; Described signal input interface comprises electric current input interface, voltage input interface and expansion input interface; Described expansion input interface comprises temperature signal input interface and arclight signal input interface;
The output terminal of described current monitoring equipment is connected with electric current input interface, voltage monitoring equipment voltage input interface connects, the output terminal of temperature monitoring equipment and temperature signal input interface, the output terminal of arclight monitoring equipment is connected with arclight signal input interface;
Described serial port extended chip is connected to power monitoring center by RS485.
Described intelligent electric power monitoring device also comprises Ethernet interface, and described Ethernet interface is connected with main control module, and is connected to power monitoring center by internet.
Described intelligent electric power monitoring device also comprises power management module, described power management module comprises primary power, standby power supply, voltage detecting circuit, power supply switch circuit and microprocessor, described primary power is connected with power supply switch circuit respectively with the output terminal of standby power supply, and the output terminal of power supply switch circuit is connected with main control module; Voltage detecting circuit is for monitoring the voltage of primary power, and the output terminal of voltage detecting circuit is connected with microprocessor, and the output terminal of microprocessor is connected with power supply switch circuit.
Described signal pre-processing module comprises the filtering circuit, amplifying circuit and the A/D convertor circuit that connect successively.
Described control panel comprises operation push-button and display.
Described main control module comprises single-chip microcomputer MSP430, and described microprocessor comprises single-chip microcomputer C8051F300.
Described current monitoring equipment comprises current transformer.
Described voltage monitoring equipment comprises three capacitive dividers be connected with A, B, C tri-of three-phase supply respectively.
Described temperature monitoring equipment comprises temperature sensor.
Described arclight monitoring equipment comprises arclight sensor.
Further, described expansion input interface also comprises humidity information input interface and network message input interface.
Further, power monitoring center can connect multiple intelligent electric power monitoring device simultaneously, and each intelligent electric power monitoring device corresponding a set of front end monitoring equipment, just can form a supervisory system covered a wide range.
The invention has the beneficial effects as follows: while (1) can support that the underlying parameter such as electric current, voltage is monitored simultaneously, go back the monitoring of support temperature, arclight, complete function, monitoring effect is good.
(2) can select as required between power monitoring center with intelligent electric power monitoring device to communicate by RS485 or by internet.
(3) intelligent electric power monitoring device is provided with power management module, can carry out electrical source exchange, ensure the normal operation of monitoring device when main power voltage is not enough.
(4) intelligent electric power monitoring device is provided with control panel, and control panel comprises operation push-button and display, can check monitoring result on the control panel and simply process.
(5) voltage monitoring equipment comprises three capacitive dividers be connected with A, B, C tri-of three-phase supply respectively, and compressive resistance is high, frequency response band is roomy, and tens electric voltage exceptions caused due to thunder and lightning reason also can accurate measurements.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the theory diagram of intelligent electric power monitoring device.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1, a kind of power monitoring system of three-phase supply, comprise power monitoring center, intelligent electric power monitoring device and front end monitoring equipment, described front end monitoring equipment comprises current monitoring equipment, voltage monitoring equipment, temperature monitoring equipment and arclight monitoring equipment;
As shown in Figure 2, described intelligent electric power monitoring device comprises signal input interface, signal pre-processing module, main control module, signal output interface, storer, timer, control panel, audible-visual annunciator and serial port extended chip; The output terminal of described signal input interface is connected with signal pre-processing module, and the deferent segment of signal pre-processing module is connected with main control module, and the output terminal of main control module is connected with signal output interface and audible-visual annunciator respectively; Described main control module is also connected with storer, timer, control panel and serial port extended chip respectively; Described signal input interface comprises electric current input interface, voltage input interface and expansion input interface; Described expansion input interface comprises temperature signal input interface and arclight signal input interface;
The output terminal of described current monitoring equipment is connected with electric current input interface, voltage monitoring equipment voltage input interface connects, the output terminal of temperature monitoring equipment and temperature signal input interface, the output terminal of arclight monitoring equipment is connected with arclight signal input interface;
Described serial port extended chip is connected to power monitoring center by RS485.
Described intelligent electric power monitoring device also comprises Ethernet interface, and described Ethernet interface is connected with main control module, and is connected to power monitoring center by internet.
Described intelligent electric power monitoring device also comprises power management module, described power management module comprises primary power, standby power supply, voltage detecting circuit, power supply switch circuit and microprocessor, described primary power is connected with power supply switch circuit respectively with the output terminal of standby power supply, and the output terminal of power supply switch circuit is connected with main control module; Voltage detecting circuit is for monitoring the voltage of primary power, and the output terminal of voltage detecting circuit is connected with microprocessor, and the output terminal of microprocessor is connected with power supply switch circuit.
Described signal pre-processing module comprises the filtering circuit, amplifying circuit and the A/D convertor circuit that connect successively.
Described control panel comprises operation push-button and display.
Described main control module comprises single-chip microcomputer MSP430, and described microprocessor comprises single-chip microcomputer C8051F300.
Described current monitoring equipment comprises current transformer.
Described voltage monitoring equipment comprises three capacitive dividers be connected with A, B, C tri-of three-phase supply respectively.
Described temperature monitoring equipment comprises temperature sensor.
Described arclight monitoring equipment comprises arclight sensor.
Claims (10)
1. the power monitoring system of a three-phase supply, it is characterized in that: comprise power monitoring center, intelligent electric power monitoring device and front end monitoring equipment, described front end monitoring equipment comprises current monitoring equipment, voltage monitoring equipment, temperature monitoring equipment and arclight monitoring equipment;
Described intelligent electric power monitoring device comprises signal input interface, signal pre-processing module, main control module, signal output interface, storer, timer, control panel, audible-visual annunciator and serial port extended chip; The output terminal of described signal input interface is connected with signal pre-processing module, and the deferent segment of signal pre-processing module is connected with main control module, and the output terminal of main control module is connected with signal output interface and audible-visual annunciator respectively; Described main control module is also connected with storer, timer, control panel and serial port extended chip respectively; Described signal input interface comprises electric current input interface, voltage input interface and expansion input interface; Described expansion input interface comprises temperature signal input interface and arclight signal input interface;
The output terminal of described current monitoring equipment is connected with electric current input interface, voltage monitoring equipment voltage input interface connects, the output terminal of temperature monitoring equipment and temperature signal input interface, the output terminal of arclight monitoring equipment is connected with arclight signal input interface;
Described serial port extended chip is connected to power monitoring center by RS485.
2. the power monitoring system of a kind of three-phase supply according to claim 1, it is characterized in that: described intelligent electric power monitoring device also comprises Ethernet interface, described Ethernet interface is connected with main control module, and is connected to power monitoring center by internet.
3. the power monitoring system of a kind of three-phase supply according to claim 1, it is characterized in that: described intelligent electric power monitoring device also comprises power management module, described power management module comprises primary power, standby power supply, voltage detecting circuit, power supply switch circuit and microprocessor, described primary power is connected with power supply switch circuit respectively with the output terminal of standby power supply, and the output terminal of power supply switch circuit is connected with main control module; Voltage detecting circuit is for monitoring the voltage of primary power, and the output terminal of voltage detecting circuit is connected with microprocessor, and the output terminal of microprocessor is connected with power supply switch circuit.
4. the power monitoring system of a kind of three-phase supply according to claim 1, is characterized in that: described signal pre-processing module comprises the filtering circuit, amplifying circuit and the A/D convertor circuit that connect successively.
5. the power monitoring system of a kind of three-phase supply according to claim 1, is characterized in that: described control panel comprises operation push-button and display.
6. the power monitoring system of a kind of three-phase supply according to claim 1, it is characterized in that: described main control module comprises single-chip microcomputer MSP430, described microprocessor comprises single-chip microcomputer C8051F300.
7. the power monitoring system of a kind of three-phase supply according to claim 1, is characterized in that: described current monitoring equipment comprises current transformer.
8. the power monitoring system of a kind of three-phase supply according to claim 1, is characterized in that: described voltage monitoring equipment comprises three capacitive dividers be connected with A, B, C tri-of three-phase supply respectively.
9. the power monitoring system of a kind of three-phase supply according to claim 1, is characterized in that: described temperature monitoring equipment comprises temperature sensor.
10. the power monitoring system of a kind of three-phase supply according to claim 1, is characterized in that: described arclight monitoring equipment comprises arclight sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510597034.8A CN105301343A (en) | 2015-09-18 | 2015-09-18 | Power monitoring system of three phase power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510597034.8A CN105301343A (en) | 2015-09-18 | 2015-09-18 | Power monitoring system of three phase power supply |
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| CN105301343A true CN105301343A (en) | 2016-02-03 |
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| CN201510597034.8A Pending CN105301343A (en) | 2015-09-18 | 2015-09-18 | Power monitoring system of three phase power supply |
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| CN107677911A (en) * | 2017-11-06 | 2018-02-09 | 长春工程学院 | A kind of electric energy quality detection device with electric fire disaster warning function |
| CN111812386A (en) * | 2020-07-22 | 2020-10-23 | 南京工业职业技术学院 | Electric power input side current and temperature on-line monitoring system |
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Application publication date: 20160203 |