CN210327050U - Circuit CT energy acquisition and energy storage power supply - Google Patents
Circuit CT energy acquisition and energy storage power supply Download PDFInfo
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- CN210327050U CN210327050U CN201920925864.2U CN201920925864U CN210327050U CN 210327050 U CN210327050 U CN 210327050U CN 201920925864 U CN201920925864 U CN 201920925864U CN 210327050 U CN210327050 U CN 210327050U
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Abstract
The utility model discloses a circuit CT energy acquisition and energy storage power supply, which comprises an energy acquisition module, a discharge module, a voltage stabilization module, a boosting module, an energy storage module, a direct current voltage stabilization module, a backup battery module and a control module; the energy acquisition module acquires induced current on a power supply line L through an open type energy acquisition coil CT according to an electromagnetic principle; the leakage module is a leakage circuit formed by a MOSFET (metal-oxide-semiconductor field effect transistor) M1 and a power resistor R1; the voltage stabilizing module comprises a rectifying bridge circuit B1 and a filter capacitor C2; the boosting module is composed of a wire-wound inductor L1, a MOSFET tube M2, a diode D2 and an electrolytic capacitor C3 to form a boosting unit; the energy storage module is composed of an electrolytic capacitor C3, a MOSFET tube M3, a resistor R6 and a super capacitor C4; the backup battery module is composed of a diode D1 and a lithium battery D6. The problem of current ubiquitous electric power thing networking perception layer equipment power supply reliability low and environmental adaptability poor is solved.
Description
Technical Field
The utility model relates to a circuit is got to the electric wire netting, concretely relates to circuit CT energy acquisition and energy storage power.
Background
At present, with the construction and development of ubiquitous power internet of things and smart power grids, the online monitoring of power transmission and distribution lines becomes very important, the distribution range of cables, insulators, towers and the like of the lines is wide, the geographic environment and the climate environment are very complex, the judgment of operation safety and fault points is particularly important, and ubiquitous power internet of things sensing layer equipment is a key component for realizing line data acquisition and state judgment.
Sensing equipment is generally installed along with the circuit, and most are located suburb or open-air environment, and its power supply can't be provided by the low voltage end directly, therefore conventional power supply can't satisfy the power supply requirement. The high-voltage line for power supply is used for energy collection, which is a high-quality power supply scheme for on-line monitoring equipment. And the traditional energy taking through the CT circuit depends on the load at the primary side of the power supply circuit, and the circuit running under low load has no power taking capability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a circuit CT energy acquisition and energy storage power adopts dynamic impedance matching circuit to realize getting the ability in little energy collection for solve the current low and poor problem of environment adaptability of power supply reliability of ubiquitous electric power thing networking perception layer equipment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a circuit CT energy acquisition and energy storage power supply comprises an energy acquisition module, a current leakage module, a voltage stabilization module, a boosting module, an energy storage module, a direct current voltage stabilization module, a backup battery module and a control module;
the energy acquisition module acquires induced current on a power supply line L through an open type energy acquisition coil CT according to an electromagnetic principle;
the leakage module is a leakage circuit formed by an MOSFET (metal oxide semiconductor field effect transistor) M1 and a power resistor R1 and used for releasing redundant current when the power supply current is larger, the control mode of the leakage module is calculated by the voltage of a circuit measuring point A and the voltage of a circuit measuring point B, and the collection of power supply leakage is realized by controlling the leakage circuit;
the voltage stabilizing module comprises a rectifier bridge circuit B1 and a filter capacitor C2, and is used for converting alternating current collected by a line into direct current so as to meet the requirements of equipment;
the boosting module is a boosting unit consisting of a wire-wound inductor L1, a MOSFET (metal oxide semiconductor field effect transistor) tube M2, a diode D2 and an electrolytic capacitor C3, under the condition that the current of a power supply line is small, the wire-wound inductor L1 and the MOSFET tube M2 boost the voltage and store the voltage into the electrolytic capacitor C3, under the condition that the current of the power supply line meets the functional requirement, the MOSFET tube M2 does not work, and the electric energy is directly stored into the electrolytic capacitor C3;
the energy storage module is a charging energy storage circuit consisting of an electrolytic capacitor C3, a MOSFET tube M3, a resistor R6 and a super capacitor C4, whether the charging of the voltage of the electrolytic capacitor C3 is completed or not is judged by collecting the voltage of a circuit measuring point A, the voltage of a circuit measuring point B is tested, if the voltage of the electrolytic capacitor C3 does not reach a set value, the MOSFET tube M3 is conducted to store the electric energy stored in the electrolytic capacitor C3 in the super capacitor C4, and when the voltage of the super capacitor C4 exceeds the set value, the voltage of the circuit measuring point A exceeds the set value, a current leakage circuit is started to input and stabilize the;
the direct-current voltage stabilizing module comprises a direct-current voltage stabilizing chip T4 and a direct-current voltage stabilizing chip T5 and provides electric energy for the line online monitoring device;
the backup battery module consists of a diode D1 and a lithium battery D6, and when the power of a circuit is cut off for a long time and the coil power supply and the super capacitor power supply are not powered, the backup battery module supplies power; the diode D4, the diode D5 and the diode D6 form a power supply protection unit, and voltage backflow is prevented from damaging a power supply device;
the control module is a circuit main control unit formed by an STM32F103 singlechip T1, and controls the on-off of the MOSFET tube M1, the MOSFET tube M2 and the MOSFET tube M3 according to a control scheme by acquiring circuit voltage information.
Preferably, the energy collection module comprises an overvoltage protection unit consisting of a zinc oxide piezoresistor RD1, a high-voltage ceramic capacitor C1 and a TVS tube D1, so that the circuit is prevented from being damaged by lightning overvoltage or operation overvoltage.
Preferably, the power resistor R1 of the bleeder module has a resistance value of 10 omh.
Preferably, a dc voltage stabilizing chip T4 of the dc voltage stabilizing module is used as a coil power supply voltage stabilizing unit, a dc voltage stabilizing chip T5 is used as a super capacitor power supply voltage stabilizing unit, a dc voltage stabilizing chip T4 is controlled by an operational amplifier T2 circuit, an operational amplifier T2 circuit is a low power consumption comparator circuit, a resistor R2 and a resistor R3 form a coil power supply voltage acquisition circuit, a resistor R4 and a diode D3 form a voltage comparison reference circuit, so as to provide an accurate 1.25V reference voltage, when a voltage of a circuit measurement point a is lower than 1.25V, that is, when a coil power supply voltage is lower than 5V, a low level signal is generated, and the voltage stabilizing chip T4 is turned off; the direct-current voltage-stabilizing chip T5 is switched by an operational amplifier T3 circuit control switch, an operational amplifier T3 is a low-power-consumption comparator circuit, a resistor R7 and a resistor R8 form a super capacitor C4 power supply voltage acquisition circuit, a resistor R9 and a diode D7 form a voltage comparison reference circuit, accurate 1.25V reference voltage is provided, and when the voltage of a circuit measuring point B is lower than 1.25V, namely the voltage of the super capacitor C4 power supply is lower than 5V, a low-level signal is generated, and the voltage-stabilizing chip T5 is closed.
Preferably, the diode D4, the diode D5 and the diode D6 are 1N1007 in model.
The utility model has the advantages of as follows:
the utility model discloses a dynamic impedance matching circuit realizes obtaining the ability in the collection of micro-energy, has solved the current problem that the power supply reliability of ubiquitous electric power thing networking perception layer equipment is low and environment adaptability is poor, has compensatied traditional getting the ability through the CT circuit, relies on the load that the power supply line once inclines, does not have the defect of getting the electric power ability to the circuit of low-load operation.
Drawings
Fig. 1 is a circuit diagram of the circuit CT energy collection and energy storage power supply of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, a circuit CT energy collection and storage power supply includes an energy collection module, a current leakage module, a voltage stabilization module, a voltage boosting module, an energy storage module, a dc voltage stabilization module, a backup battery module, and a control module;
the energy acquisition module acquires induced current on a power supply line L through an open type energy acquisition coil CT according to an electromagnetic principle;
the leakage module is a leakage circuit formed by an MOSFET (metal oxide semiconductor field effect transistor) M1 and a power resistor R1 and used for releasing redundant current when the power supply current is larger, the control mode of the leakage module is calculated by the voltage of a circuit measuring point A and the voltage of a circuit measuring point B, and the collection of power supply leakage is realized by controlling the leakage circuit;
the voltage stabilizing module comprises a rectifier bridge circuit B1 and a filter capacitor C2, and is used for converting alternating current collected by a line into direct current so as to meet the requirements of equipment;
the boosting module is a boosting unit consisting of a wire-wound inductor L1, a MOSFET (metal oxide semiconductor field effect transistor) tube M2, a diode D2 and an electrolytic capacitor C3, under the condition that the current of a power supply line is small, the wire-wound inductor L1 and the MOSFET tube M2 boost the voltage and store the voltage into the electrolytic capacitor C3, under the condition that the current of the power supply line meets the functional requirement, the MOSFET tube M2 does not work, and the electric energy is directly stored into the electrolytic capacitor C3;
the energy storage module is a charging energy storage circuit consisting of an electrolytic capacitor C3, a MOSFET tube M3, a resistor R6 and a super capacitor C4, whether the charging of the voltage of the electrolytic capacitor C3 is completed or not is judged by collecting the voltage of a circuit measuring point A, the voltage of a circuit measuring point B is tested, if the voltage of the electrolytic capacitor C3 does not reach a set value, the MOSFET tube M3 is conducted to store the electric energy stored in the electrolytic capacitor C3 in the super capacitor C4, and when the voltage of the super capacitor C4 exceeds the set value, the voltage of the circuit measuring point A exceeds the set value, a current leakage circuit is started to input and stabilize the;
the direct-current voltage stabilizing module comprises a direct-current voltage stabilizing chip T4 and a direct-current voltage stabilizing chip T5 and provides electric energy for the line online monitoring device;
the backup battery module consists of a diode D1 and a lithium battery D6, and when the power of a circuit is cut off for a long time and the coil power supply and the super capacitor power supply are not powered, the backup battery module supplies power; the diode D4, the diode D5 and the diode D6 form a power supply protection unit, and voltage backflow is prevented from damaging a power supply device;
the control module is a circuit main control unit formed by an STM32F103 singlechip T1, and controls the on-off of the MOSFET tube M1, the MOSFET tube M2 and the MOSFET tube M3 according to a control scheme by acquiring circuit voltage information.
Preferably, the energy collection module comprises an overvoltage protection unit consisting of a zinc oxide piezoresistor RD1, a high-voltage ceramic capacitor C1 and a TVS tube D1, so that the circuit is prevented from being damaged by lightning overvoltage or operation overvoltage.
Preferably, the power resistor R1 of the bleeder module has a resistance value of 10 omh.
Preferably, a dc voltage stabilizing chip T4 of the dc voltage stabilizing module is used as a coil power supply voltage stabilizing unit, a dc voltage stabilizing chip T5 is used as a super capacitor power supply voltage stabilizing unit, a dc voltage stabilizing chip T4 is controlled by an operational amplifier T2 circuit, an operational amplifier T2 circuit is a low power consumption comparator circuit, a resistor R2 and a resistor R3 form a coil power supply voltage acquisition circuit, a resistor R4 and a diode D3 form a voltage comparison reference circuit, so as to provide an accurate 1.25V reference voltage, when a voltage of a circuit measurement point a is lower than 1.25V, that is, when a coil power supply voltage is lower than 5V, a low level signal is generated, and the voltage stabilizing chip T4 is turned off; the direct-current voltage-stabilizing chip T5 is switched by an operational amplifier T3 circuit control switch, an operational amplifier T3 is a low-power-consumption comparator circuit, a resistor R7 and a resistor R8 form a super capacitor C4 power supply voltage acquisition circuit, a resistor R9 and a diode D7 form a voltage comparison reference circuit, accurate 1.25V reference voltage is provided, and when the voltage of a circuit measuring point B is lower than 1.25V, namely the voltage of the super capacitor C4 power supply is lower than 5V, a low-level signal is generated, and the voltage-stabilizing chip T5 is closed.
Preferably, the diode D4, the diode D5 and the diode D6 are 1N1007 in model.
The during operation, the energy acquisition module is got the electricity from the electric wire netting, the bleeder module provides the protection in real time, voltage stabilizing module converts alternating current into direct current, when the current value is normal, direct transmission to direct current voltage stabilizing module, after stabilizing the voltage to the on-line monitoring device power supply, when the current value is on the low side through the module that steps up after transmitting to direct current voltage stabilizing module, after stabilizing the voltage to the on-line monitoring device power supply, in the power supply process, unnecessary electric energy is left in energy storage module, when taking place the electric wire netting outage, backup battery module is the on-line monitoring device power supply.
The utility model discloses a dynamic impedance matching circuit realizes obtaining the ability in the collection of micro-energy, has solved the current problem that the power supply reliability of ubiquitous electric power thing networking perception layer equipment is low and environment adaptability is poor, has compensatied traditional getting the ability through the CT circuit, relies on the load that the power supply line once inclines, does not have the defect of getting the electric power ability to the circuit of low-load operation. .
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A circuit CT energy acquisition and energy storage power supply is characterized by comprising an energy acquisition module, a current discharge module, a voltage stabilization module, a voltage boosting module, an energy storage module, a direct current voltage stabilization module, a backup battery module and a control module;
the energy acquisition module acquires induced current on a power supply line L through an open type energy acquisition coil CT according to an electromagnetic principle;
the leakage module is a leakage circuit formed by an MOSFET (metal oxide semiconductor field effect transistor) M1 and a power resistor R1 and used for releasing redundant current when the power supply current is larger, the control mode of the leakage module is calculated by the voltage of a circuit measuring point A and the voltage of a circuit measuring point B, and the collection of power supply leakage is realized by controlling the leakage circuit;
the voltage stabilizing module comprises a rectifier bridge circuit B1 and a filter capacitor C2, and is used for converting alternating current collected by a line into direct current so as to meet the requirements of equipment;
the boosting module is a boosting unit consisting of a wire-wound inductor L1, a MOSFET (metal oxide semiconductor field effect transistor) tube M2, a diode D2 and an electrolytic capacitor C3, under the condition that the current of a power supply line is small, the wire-wound inductor L1 and the MOSFET tube M2 boost the voltage and store the voltage into the electrolytic capacitor C3, under the condition that the current of the power supply line meets the functional requirement, the MOSFET tube M2 does not work, and the electric energy is directly stored into the electrolytic capacitor C3;
the energy storage module is a charging energy storage circuit consisting of an electrolytic capacitor C3, a MOSFET tube M3, a resistor R6 and a super capacitor C4, whether the charging of the voltage of the electrolytic capacitor C3 is completed or not is judged by collecting the voltage of a circuit measuring point A, the voltage of a circuit measuring point B is tested, if the voltage of the electrolytic capacitor C3 does not reach a set value, the MOSFET tube M3 is conducted to store the electric energy stored in the electrolytic capacitor C3 in the super capacitor C4, and when the voltage of the super capacitor C4 exceeds the set value, the voltage of the circuit measuring point A exceeds the set value, a current leakage circuit is started to input and stabilize the;
the direct-current voltage stabilizing module comprises a direct-current voltage stabilizing chip T4 and a direct-current voltage stabilizing chip T5 and provides electric energy for the line online monitoring device;
the backup battery module consists of a diode D1 and a lithium battery D6, and when the power of a circuit is cut off for a long time and the coil power supply and the super capacitor power supply are not powered, the backup battery module supplies power; the diode D4, the diode D5 and the diode D6 form a power supply protection unit, and voltage backflow is prevented from damaging a power supply device;
the control module is a circuit main control unit formed by an STM32F103 singlechip T1, and controls the on-off of the MOSFET tube M1, the MOSFET tube M2 and the MOSFET tube M3 according to a control scheme by acquiring circuit voltage information.
2. The line CT energy harvesting and storage power supply of claim 1, wherein the energy harvesting module comprises an overvoltage protection unit consisting of a zinc oxide varistor RD1, a high voltage ceramic capacitor C1, and a TVS transistor D1 to prevent lightning overvoltage or operation overvoltage from damaging the circuit.
3. The line CT energy harvesting and storage power supply of claim 1, wherein the power resistor R1 of the bleeder module has a resistance of 10 omh.
4. The line CT energy collection and storage power supply of claim 1, wherein the dc voltage stabilization chip T4 of the dc voltage stabilization module is used as a coil power supply voltage stabilization unit, the dc voltage stabilization chip T5 is used as a super capacitor power supply voltage stabilization unit, the dc voltage stabilization chip T4 is controlled by an operational amplifier T2 circuit, the operational amplifier T2 circuit is a low power consumption comparator circuit, the resistor R2 and the resistor R3 form a coil power supply voltage collection circuit, the resistor R4 and the diode D3 form a voltage comparison reference circuit, so as to provide an accurate reference voltage of 1.25V, when the voltage at a circuit measurement point a is lower than 1.25V, that is, when the coil power supply voltage is lower than 5V, a low level signal is generated, and the voltage stabilization chip T4 is turned off; the direct-current voltage-stabilizing chip T5 is switched by an operational amplifier T3 circuit control switch, an operational amplifier T3 is a low-power-consumption comparator circuit, a resistor R7 and a resistor R8 form a super capacitor C4 power supply voltage acquisition circuit, a resistor R9 and a diode D7 form a voltage comparison reference circuit, accurate 1.25V reference voltage is provided, and when the voltage of a circuit measuring point B is lower than 1.25V, namely the voltage of the super capacitor C4 power supply is lower than 5V, a low-level signal is generated, and the voltage-stabilizing chip T5 is closed.
5. The line CT energy harvesting and storage power supply of claim 1, wherein the diode D4, diode D5, and diode D6 are model 1N 1007.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920925864.2U CN210327050U (en) | 2019-06-19 | 2019-06-19 | Circuit CT energy acquisition and energy storage power supply |
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| CN201920925864.2U CN210327050U (en) | 2019-06-19 | 2019-06-19 | Circuit CT energy acquisition and energy storage power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212594A (en) * | 2019-06-19 | 2019-09-06 | 北京华清智电科技股份有限公司 | A kind of route CT energy acquisition and accumulation power supply |
| CN113759163A (en) * | 2021-09-09 | 2021-12-07 | 林永成 | Low-power-consumption current transformer and control method |
| CN116760159A (en) * | 2023-08-18 | 2023-09-15 | 北京国电通网络技术有限公司 | Power grid power supply device and power grid power supply method |
-
2019
- 2019-06-19 CN CN201920925864.2U patent/CN210327050U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212594A (en) * | 2019-06-19 | 2019-09-06 | 北京华清智电科技股份有限公司 | A kind of route CT energy acquisition and accumulation power supply |
| CN110212594B (en) * | 2019-06-19 | 2024-05-03 | 国网安徽省电力有限公司芜湖供电公司 | Circuit CT energy acquisition and energy storage power supply |
| CN113759163A (en) * | 2021-09-09 | 2021-12-07 | 林永成 | Low-power-consumption current transformer and control method |
| CN113759163B (en) * | 2021-09-09 | 2024-05-03 | 林永成 | Low-power-consumption current transformer and control method |
| CN116760159A (en) * | 2023-08-18 | 2023-09-15 | 北京国电通网络技术有限公司 | Power grid power supply device and power grid power supply method |
| CN116760159B (en) * | 2023-08-18 | 2023-11-24 | 北京国电通网络技术有限公司 | Power grid power supply device and power grid power supply method |
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Granted publication date: 20200414 Termination date: 20210619 |