CN106707368B - Novel power supply mode's transmission line environment meteorological monitoring device - Google Patents
Novel power supply mode's transmission line environment meteorological monitoring device Download PDFInfo
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- CN106707368B CN106707368B CN201611182528.0A CN201611182528A CN106707368B CN 106707368 B CN106707368 B CN 106707368B CN 201611182528 A CN201611182528 A CN 201611182528A CN 106707368 B CN106707368 B CN 106707368B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
- G01W1/02—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
The invention relates to a novel power supply mode power transmission line environment meteorological monitoring device, which comprises a monitoring module, a power supply module and a charge and discharge management module, wherein the monitoring module is connected with the power supply module; the monitoring module comprises a single chip control module, the single chip control module is connected with a sensor module, a GPS module and a data transmission radio station, and the power supply module comprises a power taking module and an electric energy conditioning module; the system comprises a power taking module and an electric energy conditioning module; the power taking module adopts magnetic core induction power taking, the electric energy conditioning module comprises a rectifying circuit, a tip discharging circuit, a ripple wave filtering circuit and a voltage stabilizing circuit, and the electric energy conditioning module carries out finishing filtering on alternating current acquired by the power taking module and then stabilizes voltage to output direct current for the temperature monitoring device to use; according to the novel power supply mode power transmission line environment meteorological monitoring device, a battery is not required to be arranged for power supply in an induction power taking mode, and uninterrupted continuous power supply is realized.
Description
Technical Field
The invention relates to an environment weather monitoring device, in particular to a device for monitoring a gas phase environment around a power transmission line by adopting a non-contact induction power taking mode, and belongs to the technical field of electric power electricians.
Background
At present, under the influence of global climate change, ecological environment deterioration, rapid consumption of fossil energy and other problems, a smart power grid with stable construction becomes a new trend and a new direction of the current world power grid development. The China national electric network company also generates an interest in developing and planning key equipment (System) of the intelligent electric network; in the development planning of key equipment (system) of a smart power grid, a multi-meteorological-parameter on-line monitoring device which can adapt to severe weather environment, is highly integrated, has high transmission reliability and conforms to standard communication protocols is proposed, so that the centralized monitoring of various environmental parameters such as wind speed, wind direction, air temperature, humidity, rainfall, optical radiation and the like is required to be realized;
the current monitoring device which is directly arranged on the transmission line and can realize accurate monitoring and reliable transmission of environmental weather is very few, and the main problem is that the power supply is not easy to provide; for example, a mobile weather station for high-voltage transmission environment monitoring is disclosed in patent number 201220649872.7; however, due to the adoption of a solar power supply mode, the volume is too large, the solar power supply device is not easy to directly install on a power transmission line, and the operation is affected by weather, so that the power failure phenomenon is easy to occur. The device also needs to manually move to record data, and cannot automatically transmit real-time monitoring; in addition, the patent number 201120453470.5 discloses an overhead transmission line environment weather monitoring device, which adopts solar energy to supply power, cannot be arranged on a transmission line, can only be arranged near a pole tower, is greatly influenced by weather, and is easy to generate power failure.
Disclosure of Invention
The invention aims to overcome the defects and provide the environment meteorological monitoring device for the power transmission line, which can realize a novel power supply mode of uninterrupted continuous power supply by using an induction power taking mode to supply power.
The purpose of the invention is realized in the following way:
the utility model provides a novel power supply mode's transmission line environment meteorological monitoring device, the device includes monitoring module and power module;
the monitoring module comprises a single chip control module, the single chip control module is connected with a sensor module, a GPS module and a data transmission radio station, the sensor module comprises an environment temperature and humidity sensor, a wind speed and direction sensor, a solar radiation sensor and a rainfall sensor, and the single chip control module is also connected with a power supply module;
the power supply module comprises a power taking module, an electric energy conditioning module and a charging and discharging management module;
the electricity taking module comprises a current transformer magnetic core, a secondary coil and a sampling resistor; the current transformer magnetic core is sleeved on a high-voltage cable of the power transmission line, the secondary coil is wound on the current transformer magnetic core, and a sampling resistor is connected between two outgoing ends of the secondary coil;
the electric energy conditioning module comprises a rectifying circuit, a tip discharging circuit, a ripple filtering circuit and a voltage stabilizing circuit;
the rectifier circuit is a bridge rectifier circuit and a transient suppression diode D3, two input ends of the bridge rectifier circuit are respectively connected to two ends of a secondary coil of the power taking module, one of two output ends of the bridge rectifier circuit is grounded, the other end of the two output ends of the bridge rectifier circuit is connected to the input end of a voltage stabilizing chip in the voltage stabilizing circuit, one end of the transient suppression diode D3 is connected to the input end of the voltage stabilizing chip, and the other end of the transient suppression diode D3 is grounded;
the tip bleeder circuit comprises a voltage stabilizing diode D2, the cathode of the voltage stabilizing diode D2 is connected with the input end of the voltage stabilizing chip, the anode of the voltage stabilizing diode D2 is grounded through a voltage dividing resistor R4, the anode of the voltage stabilizing diode D2 is connected with the grid electrode of a field effect transistor Q1 through a current limiting resistor, the drain electrode of the field effect transistor Q1 is connected with the cathode of the voltage stabilizing diode D2 through a bleeder resistor R2, and the source stage of the field effect transistor Q1 is grounded;
the ripple filtering circuit comprises a filter capacitor C1, wherein the negative electrode of the filter capacitor C1 is grounded, and the positive electrode of the filter capacitor C1 is connected with the output end of the bridge rectifier circuit;
the output end of a voltage stabilizing chip of the voltage stabilizing circuit is connected with the negative electrode of the voltage stabilizing tube D4, the positive electrode of the voltage stabilizing tube D4 is grounded, the output end of the voltage stabilizing chip is connected to an external output end through an inductor L1, the external output end is connected to a charge and discharge management module, and the external output end is grounded through a capacitor C2;
the charge and discharge management module comprises a control chip with a model RT8525, an input pin VIN of the control chip is connected to an external output end of the power supply module, a system connection pin SYS of the control chip is connected to a singlechip control module of the monitoring module, and a power supply pin BAT of the control chip is connected to the lithium battery.
According to the novel power supply mode power transmission line environment weather monitoring device, the model of the voltage stabilizing chip is LM2575, and the external output end is connected to the fourth pin input feedback signal of the voltage stabilizing chip, so that a feedback loop is formed, and the voltage stabilizing capacity is improved.
The invention relates to a novel power supply mode power transmission line environment weather monitoring device, which comprises an intelligent protection module, wherein the intelligent protection module comprises a singlechip, a single-pole double-throw relay, a wireless radio frequency module and a temperature sensor, the single-pole double-throw relay is connected in series on a connecting wire between a secondary coil and a rectifying circuit, a control port of the single-pole double-throw relay is connected with the singlechip, the singlechip is in communication connection with the wireless radio frequency module and the temperature sensor, and the temperature sensor is arranged on a circuit board of a tip discharging circuit.
According to the power transmission line environment weather monitoring device with the novel power supply mode, the singlechip is powered through the external output end of the voltage stabilizing circuit, and the singlechip is connected with the super capacitor for short-time power supply.
The invention relates to a novel power supply mode power transmission line environment weather monitoring device, wherein the model of a single-pole double-throw relay is JQC-3F.
The invention relates to a novel power supply mode power transmission line environment weather monitoring device, wherein a current transformer magnetic core is formed by superposing silicon steel sheets, 50Hz silicon steel sheets are selected as the material of the current transformer magnetic core, the lamination coefficient is 10, and the radius of a magnetic circuit is 10mm; the secondary coil was wound with 0.25mm enameled wire for a total of 200 turns.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts a non-contact mode to induce electricity from the high-voltage cable of the power transmission line, so that the monitoring device gets rid of the limitation of a power supply, can be directly arranged on the line, ensures the continuity of power supply, does not need to replace a battery, solves the defect that the traditional technology needs frequent replacement when the lithium battery is used for power supply, and is safer, more reliable and more stable; and after the charge and discharge management module is introduced, uninterrupted continuous power supply can be ensured.
Drawings
Fig. 1 is a schematic diagram of an application state of a novel power supply mode power transmission line environment weather monitoring device.
Fig. 2 is a schematic circuit diagram of a novel power supply mode power transmission line environment weather monitoring device.
Fig. 3 is a circuit block diagram of a power supply module of the power transmission line environment weather monitoring device in a novel power supply mode.
Fig. 4 is a circuit block diagram of a power taking module of the power transmission line environment weather monitoring device in a novel power supply mode.
Fig. 5 is a circuit block diagram of an electric energy conditioning module of the novel power supply mode power transmission line environment weather monitoring device.
Fig. 6 is a circuit diagram of a wireless radio frequency module of the power transmission line environment weather monitoring device in a novel power supply mode.
Fig. 7 is a circuit diagram of a charge and discharge management module of the power transmission line environment weather monitoring device in a novel power supply mode.
Detailed Description
Referring to fig. 1-7, the invention relates to a novel power supply mode power transmission line environment weather monitoring device, which comprises a monitoring module and a power supply module;
referring to fig. 2, the monitoring module comprises a single chip control module, the single chip control module is connected with a sensor module, a GPS module and a data transmission station, the sensor module comprises an environment temperature and humidity sensor, a wind speed and direction sensor, a solar radiation sensor and a rainfall sensor, and the single chip control module is also connected with a power supply module;
referring to fig. 3 to 5, the power supply module includes a power taking module, an electric energy conditioning module and a charge and discharge management module;
the electricity taking module comprises a current transformer magnetic core, a secondary coil and a sampling resistor; the current transformer magnetic core is sleeved on a high-voltage cable of the power transmission line, the secondary coil is wound on the current transformer magnetic core, and a sampling resistor is connected between two outgoing ends of the secondary coil; the sampling resistor is connected in parallel with the output end of the secondary coil and is used for setting the induced alternating electromotive force at a proper voltage point;
the electric energy conditioning module comprises a rectifying circuit, a tip discharging circuit, a ripple filtering circuit and a voltage stabilizing circuit;
the rectifier circuit is a bridge rectifier circuit and a transient suppression diode D3, two input ends of the bridge rectifier circuit are respectively connected to two ends of a secondary coil of the power taking module, one of two output ends of the bridge rectifier circuit is grounded, the other end of the two output ends of the bridge rectifier circuit is connected to the input end of a voltage stabilizing chip in the voltage stabilizing circuit, one end of the transient suppression diode D3 is connected to the input end of the voltage stabilizing chip, the other end of the transient suppression diode D3 is grounded, and the transient suppression diode D3 has the function of protecting the power supply module from surge impact;
the tip bleeder circuit comprises a voltage stabilizing diode D2, the cathode of the voltage stabilizing diode D2 is connected with the input end of the voltage stabilizing chip, the anode of the voltage stabilizing diode D2 is grounded through a voltage dividing resistor R4, the anode of the voltage stabilizing diode D2 is connected with the grid electrode of a field effect transistor Q1 through a current limiting resistor, the drain electrode of the field effect transistor Q1 is connected with the cathode of the voltage stabilizing diode D2 through a bleeder resistor R2, and the source stage of the field effect transistor Q1 is grounded; when the pulsating direct current peak in the loop is higher than the sum of the voltage stabilizing value of the zener diode D2 and the voltage drop of the voltage dividing resistor R4 (5.1 KΩ,0.5 w), the zener diode D2 is turned on; then, the field effect tube Q1 is used as an overvoltage protection of a power supply to enter a conducting state, and peak energy of the pulsating direct current is transferred to a discharge resistor R2 (50Ω,10 w) to be released to the ground, so that a subsequent loop is protected;
the ripple filtering circuit comprises a filter capacitor C1, wherein the negative electrode of the filter capacitor C1 is grounded, and the positive electrode of the filter capacitor C1 is connected with the output end of the bridge rectifier circuit; the filter capacitor C1 (1000 mu F) can filter the voltage ripple to obtain stable direct-current voltage;
the output end of a voltage stabilizing chip of the voltage stabilizing circuit is connected with the negative electrode of the voltage stabilizing tube D4, the positive electrode of the voltage stabilizing tube D4 is grounded, the output end of the voltage stabilizing chip is connected to the external output end through an inductor L1, and the external output end is grounded through a capacitor C2; the inductor L1 and the capacitor C2 form a filter loop of an output end; the external output end of the power supply is connected to a charge and discharge management module;
referring to fig. 6 and 7, the charge-discharge management module includes a control chip with model RT8525, an input pin VIN of the control chip is connected to an external output end of the power supply module, a system connection pin SYS of the control chip is connected to a single chip microcomputer control module of the monitoring module, and a power supply pin BAT of the control chip is connected to the lithium battery; further, the indicator light LED1 is connected with a power state monitoring Pin (PGOOD) of a charge management chip of the control chip, and the indicator light LED2 is connected with a charge state monitoring pin (CHG) of the control chip; a charging current setting pin (ISETA) determines a charging current value, a charging fault timing pin (TIMER) is used for timing a charging fault, a capacitor C4 (10 mu F/16V) is used for controlling the capacitor for timing duration, a power supply state monitoring Pin (PGOOD) controls an indicator light LED1 to indicate whether an input power supply is normal or not, a charging state monitoring pin (CHG) controls an indicator light LED2 to indicate whether charging is finished or not, and configuration pins (EN 1 and EN 2) for limiting the charging current and peripheral circuits thereof can limit the maximum value of the charging current; in the whole circuit operation process, the charge and discharge management module realizes charge and discharge management of a single lithium battery, and when the control chip RT9525 detects that the voltage of an input pin (VIN) is enough, the monitoring device is simultaneously powered and the lithium battery is charged; when the control chip RT9525 detects that the voltage of the VIN pin is only enough to provide electric energy for the electric equipment, the monitoring device is preferentially powered, and the lithium battery is stopped being charged; when the control chip RT9525 detects that the voltage of the VIN pin is insufficient to supply power to the power equipment, the control chip RT9525 controls the lithium battery to discharge so as to supply power to the monitoring device; the whole operation process enables the power equipment to obtain safe, stable and uninterrupted electric energy.
Further, the model of the voltage stabilizing chip is LM2575, and the external output end is connected to the fourth pin of the voltage stabilizing chip to input a feedback signal, so that a feedback loop is formed to improve the voltage stabilizing capability;
further, the power supply also comprises an intelligent protection module, the intelligent protection module comprises a single-chip microcomputer, a single-pole double-throw relay, a wireless radio frequency module and a temperature sensor, the single-pole double-throw relay is connected in series to a connecting wire between the secondary coil and the rectifying circuit, a control port of the single-pole double-throw relay is connected with the single-chip microcomputer, the single-chip microcomputer is in communication connection with the wireless radio frequency module and the temperature sensor, and the temperature sensor is arranged on a circuit board of the tip discharging circuit; when the single-pole double-throw relay is closed, the power taking module sends induction electric energy to the rear device; when the temperature sensor detects that the temperature exceeds the standard, the single-chip microcomputer throws a single-pole double-throw relay (JQC-3F) into a gear for disconnecting a circuit through a PGO pin, and the single-pole double-throw relay is connected again until the temperature is recovered to be normal; the super capacitor supplies power to the singlechip when the main power supply loop is disconnected; the capacity of the super capacitor is required to ensure that the singlechip can detect the temperature of the tip bleeder circuit within 5 minutes after the main circuit is powered off, and when the temperature enters a recovery threshold value, the single-pole double-throw relay is controlled to be re-connected into the power supply loop, so that the storage electric quantity of the super capacitor is saved, and the singlechip is in an active shutdown mode and is started only when the temperature is measured. After the capacitor is powered for 5 minutes, if the temperature of the tip release circuit can not be reduced to the recovery threshold, the wireless radio frequency module enters a transmitting mode from a sleep mode, and the ZigBee protocol can be utilized to upload fault data of the power supply module to a background host for real-time monitoring; in the wireless radio frequency module, the radio frequency chip can select SI4432;
furthermore, the singlechip is powered through the external output end of the voltage stabilizing circuit, is connected with a super capacitor and is used for short-time power supply, and the model of the single-pole double-throw relay is JQC-3F;
further, the current transformer magnetic core is formed by superposing silicon steel sheets, 50Hz silicon steel sheets are selected as the material of the current transformer magnetic core, the lamination coefficient is 10, and the radius of a magnetic circuit is 10mm; the secondary coil is wound by 0.25mm enameled wire, and 200 turns are wound in total;
when the monitoring device is used, a plurality of monitoring devices are arranged at different monitoring positions of a high-voltage cable of a power transmission line, and various meteorological data monitored by a sensor module are transmitted to a background upper computer through a data transmission radio station for statistics and analysis;
in addition: it should be noted that the above embodiment is only one of the optimization schemes of this patent, and any modification or improvement made by those skilled in the art according to the above concepts is within the scope of this patent.
Claims (6)
1. Novel power supply mode's transmission line environment meteorological monitoring device, its characterized in that: the device comprises a monitoring module and a power supply module;
the monitoring module comprises a single chip control module, the single chip control module is connected with a sensor module, a GPS module and a data transmission radio station, the sensor module comprises an environment temperature and humidity sensor, a wind speed and direction sensor, a solar radiation sensor and a rainfall sensor, and the single chip control module is also connected with a power supply module;
the power supply module comprises a power taking module, an electric energy conditioning module and a charging and discharging management module;
the electricity taking module comprises a current transformer magnetic core, a secondary coil and a sampling resistor; the current transformer magnetic core is sleeved on a high-voltage cable of the power transmission line, the secondary coil is wound on the current transformer magnetic core, and a sampling resistor is connected between two outgoing ends of the secondary coil;
the electric energy conditioning module comprises a rectifying circuit, a tip discharging circuit, a ripple filtering circuit and a voltage stabilizing circuit;
the rectifier circuit is a bridge rectifier circuit and a transient suppression diode D3, two input ends of the bridge rectifier circuit are respectively connected to two ends of a secondary coil of the power taking module, one of two output ends of the bridge rectifier circuit is grounded, the other end of the two output ends of the bridge rectifier circuit is connected to the input end of a voltage stabilizing chip in the voltage stabilizing circuit, one end of the transient suppression diode D3 is connected to the input end of the voltage stabilizing chip, and the other end of the transient suppression diode D3 is grounded;
the tip bleeder circuit comprises a voltage stabilizing diode D2, the cathode of the voltage stabilizing diode D2 is connected with the input end of the voltage stabilizing chip, the anode of the voltage stabilizing diode D2 is grounded through a voltage dividing resistor R4, the anode of the voltage stabilizing diode D2 is connected with the grid electrode of a field effect transistor Q1 through a current limiting resistor, the drain electrode of the field effect transistor Q1 is connected with the cathode of the voltage stabilizing diode D2 through a bleeder resistor R2, and the source stage of the field effect transistor Q1 is grounded; when the pulse direct current peak in the loop is higher than the sum of the voltage stabilizing value of the zener diode D2 and the voltage drop of the divider resistor R4, the zener diode D2 is conducted; then, the field effect transistor Q1 is used as overvoltage protection of a power supply to enter a conducting state, and peak energy of pulsating direct current is transferred to a bleeder resistor R2 to be released to the ground;
the ripple filtering circuit comprises a filter capacitor C1, wherein the negative electrode of the filter capacitor C1 is grounded, and the positive electrode of the filter capacitor C1 is connected with the output end of the bridge rectifier circuit;
the output end of a voltage stabilizing chip of the voltage stabilizing circuit is connected with the negative electrode of the voltage stabilizing tube D4, the positive electrode of the voltage stabilizing tube D4 is grounded, the output end of the voltage stabilizing chip is connected to an external output end through an inductor L1, the external output end is connected to a charge and discharge management module, and the external output end is grounded through a capacitor C2; the inductor L1 and the capacitor C2 form a filter loop of an output end; the external output end of the power supply is connected to a charge and discharge management module;
the charge and discharge management module comprises a control chip with a model RT8525, an input pin VIN of the control chip is connected to the outer output end of the power supply module, a system connection pin SYS of the control chip is connected to a singlechip control module of the monitoring module, and a power supply pin BAT of the control chip is connected to the lithium battery; the indicator light LED1 is connected with a power state monitoring pin PGOOD of a charging management chip of the control chip, and the indicator light LED2 is connected with a charging state monitoring pin CHG of the control chip; the charging current setting pin ISETA determines a charging current value, the charging fault timing pin TIMER is used for timing a charging fault, the capacitor C4 is a timing duration control capacitor, the power supply state monitoring pin PGOOD controls the indicator lamp LED1 to indicate whether an input power supply is normal or not, the charging state monitoring pin CHG controls the indicator lamp LED2 to indicate whether charging is finished or not, and the configuration pins EN1 and EN2 for limiting the charging current and a peripheral circuit thereof can limit the maximum value of the charging current; in the whole circuit operation process, the charge and discharge management module realizes charge and discharge management of a single lithium battery, and when the control chip RT9525 detects that the voltage of the input pin VIN is enough, the monitoring device is simultaneously powered and the lithium battery is charged; when the control chip RT9525 detects that the voltage of the VIN pin is only enough to provide electric energy for the electric equipment, the monitoring device is preferentially powered, and the lithium battery is stopped being charged; when the control chip RT9525 detects that the voltage of the VIN pin is insufficient to supply power to the power equipment, the control chip RT9525 controls the lithium battery to discharge so as to supply power to the monitoring device; the whole operation process enables the power equipment to obtain safe, stable and uninterrupted electric energy.
2. The power transmission line environmental weather monitoring device in a novel power supply mode as claimed in claim 1, wherein: the model of the voltage stabilizing chip is LM2575, and the external output end is connected to the fourth pin of the voltage stabilizing chip to input feedback signals, so that a feedback loop is formed to improve the voltage stabilizing capability.
3. The power transmission line environmental weather monitoring device in a novel power supply mode as claimed in claim 1, wherein: the power supply also comprises an intelligent protection module, the intelligent protection module comprises a singlechip, a single-pole double-throw relay, a wireless radio frequency module and a temperature sensor, the single-pole double-throw relay is connected in series on a connecting wire between the secondary coil and the rectifying circuit, a control port of the single-pole double-throw relay is connected with the singlechip, the singlechip is in communication connection with the wireless radio frequency module and the temperature sensor, and the temperature sensor is arranged on a circuit board of the tip discharging circuit.
4. A novel power mode transmission line environmental weather monitoring device as claimed in claim 3, wherein: the singlechip is powered through the external output end of the voltage stabilizing circuit, and is connected with a super capacitor for short-time power supply.
5. A novel power mode transmission line environmental weather monitoring device as claimed in claim 3, wherein: the model of the single-pole double-throw relay is JQC-3F.
6. A novel power mode transmission line environmental weather monitoring device as claimed in claim 3, wherein: the current transformer magnetic core is formed by superposing silicon steel sheets, 50Hz silicon steel sheets are selected as the material of the current transformer magnetic core, the lamination coefficient is 10, and the radius of a magnetic circuit is 10mm; the secondary coil was wound with 0.25mm enameled wire for a total of 200 turns.
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| CN108123524A (en) * | 2017-12-28 | 2018-06-05 | 成都三朵云科技有限公司 | A kind of power supply circuit and electric power monitoring system |
| CN108964268A (en) * | 2018-07-02 | 2018-12-07 | 芜湖通全电子电器科技创业有限公司 | A kind of grid automation detection and control terminal device |
| CN113504580A (en) * | 2021-05-27 | 2021-10-15 | 杭州电子科技大学 | Power transmission line micro-meteorological data early warning system and method based on cable induction power taking |
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| CN202304896U (en) * | 2011-10-28 | 2012-07-04 | 江苏省电力公司连云港供电公司 | On-line swing monitoring system for overhead transmission line |
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