CN106410981A - Busbar electricity getting circuit of high-voltage side of current transformer - Google Patents
Busbar electricity getting circuit of high-voltage side of current transformer Download PDFInfo
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- CN106410981A CN106410981A CN201611120888.8A CN201611120888A CN106410981A CN 106410981 A CN106410981 A CN 106410981A CN 201611120888 A CN201611120888 A CN 201611120888A CN 106410981 A CN106410981 A CN 106410981A
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- rectifier bridge
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
Abstract
The present invention discloses a busbar electricity getting circuit of a high-voltage side of a current transformer, and relates to the current transformer technology field. The circuit comprises a CT electricity getting coil, a rectification protection module, a switch module, a PWM control module and a c. The CT electricity getting coil includes a primary coil and a secondary coil; the rectification protection module includes a two-way TVS pipe, a rectification bridge and a first triode; the secondary coil is electrically connected with the two-way TVS pipe and the input terminal of the rectification bridge; the switch module includes a second MOS pipe, and the anode output terminal of the rectification bridge is electrically connected with the drain of the second MOS pipe; the cathode output terminal of the rectification bridge is electrically connected with the source of the second MOS pipe; the PWM control module includes a PWM (Pulse Width Modulation) chip; and the DC-DC voltage stabilization module includes a DC-DC voltage stabilization chip. The busbar electricity getting circuit of the high-voltage side of the current transformer can improve the power supply reliability, improve the power supply output quality and ensure the work precision of the electronic transformer collector.
Description
Technical field
The present invention relates to current transformer technical field, the high-voltage side bus power taking of more particularly to a kind of current transformer
Circuit.
Background technology
Electronic mutual inductor is the important device in intelligent digitalized transformer station, and the safety that its reliability is related to electrical network is steady
Fixed operation.The method that wherein active electronic current transformer adopts high-pressure side sampling, harvester is in high-pressure side in-site collecting
Signal, and in order to ensure insulating properties, Active Electronic Current Transformer high and low pressure side is no electrically connected it is therefore necessary to be high pressure
Side harvester provides reliable and stable power supply, to ensure electronic mutual inductor safe and stable operation.
At present, high-pressure side power supply mode predominantly power and CT power taking power supply combines by Laser Power Devices, complements one another.Wherein
Laser Power Devices supply voltage is stable, is affected by the external environment little, but high cost, short life, and fiber-optic transfer is easily lost, reliability
Not high.And CT power taking power supply low cost, life-span length, but there is work dead band when bus current is less, when bus appearance is short
During the fault of road, need to bear several short circuit currents decupling rated current, the protective measure requirement to power supply is very high.
For CT power taking power supply, its generally adopt by the way of be a taking energy coil, access a rectification circuit, apply
PWM controller controls metal-oxide-semiconductor to carry out switching manipulation, carries out discharge and recharge to storage capacitor, realizes DC source output with this.But
This mode is not enough for power system complicated applications environmental consideration, when Short-Circuit High Current in bus, taking energy coil secondary side
Current anomaly increases, and power supply lacks earial drainage loop, leads to power supply to burn；Lack and short trouble, switching manipulation or thunderbolt are produced
Overvoltage protection；The protective measure answered, line, when power failure, may lead to taking energy coil second open circuit, and power supply lacks
Few mutually circle secondary side occurs high pressure, causing trouble expanded range；And Power System Electromagnetic Environment is complicated, PWM controller is produced
Raw PWM ripple is easily disturbed it is impossible to accurately control metal-oxide-semiconductor to cut-off, and can lead to metal-oxide-semiconductor abnormal heating, impact power supply stability and
Reliability；Power supply output is of low quality, affects electronic transformer collector signals collecting precision.
Content of the invention
The technical problem to be solved in the present invention is：A kind of high-voltage side bus power-supply circuit of current transformer, this electricity are provided
The high-voltage side bus power-supply circuit of current transformer passes through to optimize taking energy coil subsequent conditioning circuit, increases overcurrent protection it is ensured that electrical network
When short trouble occurs, power supply energy steady operation；Increase overvoltage protection, can effectively prevent taking energy coil during short trouble from inducing
Overvoltage, and switching manipulation or thunderbolt produce high voltage damage power supply, protection power good work；Increase taking energy coil
Open-circuit-protection, prevents open coil；Voltage stabilizing and filtering are carried out to the output of PWM control module, improves PWM wave stability, resist and do
Immunity, makes the metal-oxide-semiconductor can be with steady operation, it is to avoid abnormal heating, improves power supply reliability；Increase DC-DC Voltage stabilizing module, improve
Power supply output quality is it is ensured that electronic transformer collector operating accuracy.
The present invention is adopted the technical scheme that by solving technical problem present in known technology：
A kind of high-voltage side bus power-supply circuit of current transformer, at least includes：
CT electricity taking coil (1)；Described CT electricity taking coil (1) includes primary winding and secondary coil；
Rectification protection module (2)；Described rectification protection module (2) include two-way TVS pipe, rectifier bridge (B001), the one or three
Pole pipe (Q001)；Described secondary coil is electrically connected with the input terminal of two-way TVS pipe, rectifier bridge (B001) respectively；Described rectification
The lead-out terminal of bridge (B001) is electrically connected with protective resistance (R001)；The negative output terminals of described rectifier bridge (B001) pass through the
Three stabilivolts (D003) are electrically connected with the positive output terminals of rectifier bridge (B001)；The cathode output end of described rectifier bridge (B001)
Son is electrically connected with the emitter stage of the first audion (Q001) by the second stabilivolt (D002)；The positive pole of described rectifier bridge (B001)
Lead-out terminal is electrically connected with the colelctor electrode of the first audion (Q001)；It is steady that the base stage of described first audion (Q001) passes through first
Pressure pipe (D001) is electrically connected with the positive output terminals of rectifier bridge (B001)；
Switch module (3)；Described switch module (3) includes the second metal-oxide-semiconductor (Q002), the positive pole of described rectifier bridge (B001)
Lead-out terminal is electrically connected with the drain electrode of the second metal-oxide-semiconductor (Q002)；The negative output terminals of described rectifier bridge (B001) and the 2nd MOS
The source electrode electrical connection of pipe (Q002)；The source ground of described second metal-oxide-semiconductor (Q002)；The positive pole output of described rectifier bridge (B001)
Terminal is electrically connected with power supply terminal by the 4th diode (D004)；The negative output terminals of described rectifier bridge (B001) pass through the
Five diodes (D005) are electrically connected with power supply terminal；Described power supply terminal passes through the first electric capacity (C001) and is grounded；Described 2nd MOS
The grid of pipe (Q002) passes sequentially through second resistance (R002), 3rd resistor (R003) is electrically connected with power supply terminal；Described second
The grid of metal-oxide-semiconductor (Q002) passes sequentially through second resistance (R002), the second electric capacity (C002) is electrically connected with power supply terminal；Described
The grid of two metal-oxide-semiconductors (Q002) passes sequentially through second resistance (R002), the 4th resistance (R004) ground connection；
PWM control module (4)；Described PWM control module (4) includes PWM pulse width modulating chip (U101), described PWM arteries and veins
Model UC2524 of wide modulation chip (U101), described power supply terminal passes sequentially through the 13rd resistance (R103), the 14th electricity
Resistance (R104) is electrically connected with the cathode power supply terminal of PWM pulse width modulating chip (U101)；The benchmark of described PWM control module (4)
Output voltage terminals (VREF) pass sequentially through the 11st resistance (R101), the 12nd resistance (R102) and PWM pulse width modulating chip
(U101) negative power supply terminal electrical connection；12nd pin of described PWM pulse width modulating chip (U101) and the tenth three-prong
Electrically connected with the grid of the second metal-oxide-semiconductor (Q002) by second resistance (R002) after short circuit；
DC-DC Voltage stabilizing module (5)；Described DC-DC Voltage stabilizing module (5) includes DC-DC voltage stabilizing chip (U201), described DC-
Model LM2575 of DC voltage stabilizing chip (U201)；15th pin of described PWM pulse width modulating chip (U101) is steady with DC-DC
The input terminal electrical connection of pressure chip (U201)；The FB pin of described DC-DC voltage stabilizing chip (U201) passes through the 24th resistance
(R204) electrically connect with power output terminal (CT V+)；The FB pin of described DC-DC voltage stabilizing chip (U201) passes through the 25th
Resistance (R205) is grounded；Described power output terminal (CT V+) passes sequentially through the 24th resistance (R204), the 25th resistance
(R205) it is grounded；The lead-out terminal of described DC-DC voltage stabilizing chip (U201) passes through inductance (L201) and power output terminal (CT V
+) electrical connection；The lead-out terminal of described DC-DC voltage stabilizing chip (U201) passes sequentially through inductance (L201), the 21st electric capacity
(CE201) it is grounded.
Further：Described CT electricity taking coil (1) is made up of the little iron core of crystallite.
The present invention has the advantages and positive effects that：
By adopting technique scheme, compared with conventional art, the present invention passes through to optimize taking energy coil subsequent conditioning circuit,
Increase overcurrent protection it is ensured that when short trouble in electrical network, power supply energy steady operation；Increase overvoltage protection, can effectively prevent
The overvoltage that during short trouble, taking energy coil induces, and the high voltage damage power supply that switching manipulation or thunderbolt produce, protection
Power good works；Increase taking energy coil open-circuit-protection, prevent open coil；Voltage stabilizing and filter are carried out to the output of PWM control module
Ripple, improves PWM wave stability, anti-interference, makes the metal-oxide-semiconductor can be with steady operation, it is to avoid abnormal heating, improves power supply reliable
Property；Increase DC-DC Voltage stabilizing module, improve power supply output quality it is ensured that electronic transformer collector operating accuracy..
Brief description
Fig. 1 is the circuit block diagram of the preferred embodiment of the present invention；
Fig. 2 is the partial circuit diagram of the preferred embodiment of the present invention, is mainly used in showing CT electricity taking coil, rectification protection mould
Circuit connecting relation between block, switch module three；
Fig. 3 is the partial circuit diagram of the preferred embodiment of the present invention, is mainly used in showing the circuit structure of PWM control module；
Fig. 4 is the partial circuit diagram of the preferred embodiment of the present invention, is mainly used in showing the circuit knot of DC-DC Voltage stabilizing module
Structure.
Wherein：1st, CT electricity taking coil；2nd, rectification protection module；3rd, switch module；4th, PWM control module；5th, DC-DC voltage stabilizing
Module.
Specific embodiment
For content of the invention, feature and effect of the present invention can be further appreciated that, hereby enumerate following examples, and coordinate accompanying drawing
Describe in detail as follows：
Refer to Fig. 1 to Fig. 4, a kind of high-voltage side bus power-supply circuit of current transformer, including：
CT electricity taking coil 1；Described CT electricity taking coil 1 includes primary winding and secondary coil；
Rectification protection module 2；Described rectification protection module 2 includes two-way TVS pipe, rectifier bridge B001, the first audion
Q001；Described secondary coil is electrically connected with the input terminal of two-way TVS pipe, rectifier bridge B001 respectively；Described rectifier bridge B001's
Lead-out terminal is electrically connected with protective resistance R001；The negative output terminals of described rectifier bridge B001 pass through the 3rd stabilivolt D003 with
The positive output terminals electrical connection of rectifier bridge B001；The negative output terminals of described rectifier bridge B001 pass through the second stabilivolt D002
Electrically connect with the emitter stage of the first audion Q001；The positive output terminals of described rectifier bridge B001 and the first audion Q001's
Colelctor electrode electrically connects；The base stage of described first audion Q001 passes through the positive pole output of the first stabilivolt D001 and rectifier bridge B001
Terminal electrically connects；
Switch module 3；Described switch module 3 includes the second metal-oxide-semiconductor Q002, the positive output terminals of described rectifier bridge B001
Drain electrode with the second metal-oxide-semiconductor Q002 electrically connects；The negative output terminals of described rectifier bridge B001 and the source electrode of the second metal-oxide-semiconductor Q002
Electrical connection；The source ground of described second metal-oxide-semiconductor Q002；The positive output terminals of described rectifier bridge B001 pass through the 4th diode
D004 is electrically connected with power supply terminal；The negative output terminals of described rectifier bridge B001 pass through the 5th diode D005 and power supply terminal
Electrical connection；Described power supply terminal passes through the first electric capacity C001 ground connection；The grid of described second metal-oxide-semiconductor Q002 passes sequentially through the second electricity
Resistance R002,3rd resistor R003 are electrically connected with power supply terminal；The grid of described second metal-oxide-semiconductor Q002 passes sequentially through second resistance
R002, the second electric capacity C002 are electrically connected with power supply terminal；The grid of described second metal-oxide-semiconductor Q002 passes sequentially through second resistance
R002, the 4th resistance R004 ground connection；
PWM control module 4；Described PWM control module 4 includes PWM pulse width modulating chip U101, described PWM pulsewidth modulation
Model UC2524 of chip U101, described power supply terminal passes sequentially through the 13rd resistance R103, the 14th resistance R104 and PWM
The cathode power supply terminal electrical connection of pulse width modulating chip U101；The sub- VREF of reference voltage output end of described PWM control module 4 according to
Secondary pass through the 11st resistance R101, the 12nd resistance R102 is electrically connected with the negative power supply terminal of PWM pulse width modulating chip U101；
Pass through second resistance R002 and second after 12nd pin of described PWM pulse width modulating chip U101 and the tenth three-prong short circuit
The grid electrical connection of metal-oxide-semiconductor Q002；
DC-DC Voltage stabilizing module 5；Described DC-DC Voltage stabilizing module 5 includes DC-DC voltage stabilizing chip U201, described DC-DC voltage stabilizing
Model LM2575 of chip U201；15th pin of described PWM pulse width modulating chip U101 and DC-DC voltage stabilizing chip U201
Input terminal electrical connection；The FB pin of described DC-DC voltage stabilizing chip U201 is passed through the 24th resistance R204 and is exported with power supply
Terminal CT V+ electrically connects；The FB pin of described DC-DC voltage stabilizing chip U201 passes through the 25th resistance R205 ground connection；Described electricity
Source output terminal CT V+ passes sequentially through the 24th resistance R204, the 25th resistance R205 ground connection；Described DC-DC voltage stabilizing core
The lead-out terminal of piece U201 is electrically connected with power output terminal CT V+ by inductance L201；Described DC-DC voltage stabilizing chip U201
Lead-out terminal passes sequentially through inductance L201, the 21st electric capacity CE201 ground connection.
Further：Described CT electricity taking coil 1 is made up of the little iron core of crystallite.
This preferred embodiment is mainly made up of 5 parts, including：
CT electricity taking coil 1, rectification protection module 2, switch module 3, PWM control module 4, DC-DC Voltage stabilizing module 5.Its work
Make principle as follows：
It is illustrated in figure 2 CT electricity-fetching module 1, rectification protection module 2, switch module circuit 3：Wherein the taking of CT electricity-fetching module
Electric coil adopt the little iron core of crystallite, saturation point unshakable in one's determination is reduced with this, prevents coil secondary side current excessive, and according to specified once
Electric current and load power demand, the enough numbers of turn of coiling, generally ensure that rated secondary current has 100mA～1A.Its secondary go out
What line first and last end S1 with S2 met the full-wave rectification bridge B001 in rectification module 2 respectively exchanges input pin, by CT electricity taking coil 1
AC rectification is unidirectional current；
TVS1 in rectification module selects two-way TVS pipe, for cutting down the spike occurring after saturation unshakable in one's determination, after protection
Continuous circuit；R001 is protective resistance, when power supply subsequent conditioning circuit breaks down, prevents CT electricity taking coil secondary side from forming open circuit,
High pressure occurs, improves Product Safety；First stabilivolt D001, the first audion Q001, the second stabilivolt D002 composition protection
Shunt circuit, when bus short trouble and leads to CT electricity taking coil secondary side current significantly to increase, excessive for releasing
Electric current, to protect subsequent conditioning circuit will not burn and can maintain enough running voltages it is ensured that power supply normal work；3rd stabilivolt
D003 can prevent overvoltage by stable for VD after rectifier bridge B001 in a safety value, protects subsequent conditioning circuit；
In switch module, Q002 is metal-oxide-semiconductor, under the control of PWM control module 4 " CTRL " signal, forms opening of high frequency
Pass action, carries out discharge and recharge to the first electric capacity C001." CTRL " signal is a PWM ripple, that is, when the first electric capacity C001 both end voltage
During rising, " CTRL " signal is high level, and stabilivolt Q002 (i.e. second metal-oxide-semiconductor) turns on, and electric capacity stops charging, and starts to discharge,
When electric capacity C001 voltage declines, " CTRL " signal is low level, the second metal-oxide-semiconductor cut-off, starts the first electric capacity C001 is charged,
Circulated repeatedly with this, by voltage stabilization at a certain fixed value " VCC ", such as 6V.D004 is diode, when discharging for limiting capacitance
Current direction.Zener diode D005, when circuit breaks down, can stablize electric capacity C001 both end voltage in a safety value,
Prevent electric capacity C001 two ends from overvoltage occurring, puncture capacitor.Resistance R003, resistance R004, electric capacity C002 are used for stablizing PWM control
" CTRL " control signal of module 4 output, makes the second metal-oxide-semiconductor Q002 can accurately carry out switching manipulation.
Referring to Fig. 3, wherein U101 is PWM pulsewidth modulation special chip.VCC is exported by switch module 3 and passes through the 13rd
Resistance R103, the 14th resistance R104 partial pressure are connected to PWM pulse width modulating chip U101 pin 2, PWM pulse width modulating chip U101 core
Piece pin 16 produces reference voltage " VREF ", is connected to PWM pulsewidth by the 11st resistance R101, the 12nd resistance R102 partial pressure and adjusts
Coremaking piece U101 chip pin 1.12,13 pins of PWM pulse width modulating chip U101 chip produce PWM ripple and are " CTRL " control
Signal, for the second metal-oxide-semiconductor Q002 execution switch motion in controlling switch module 3.
Refer to Fig. 4, be to obtain the more preferable DC source of quality, make voltage stabilization, reduce power supply ripple, through aforementioned modules
" VCC " power supply obtaining, then access DC-DC Voltage stabilizing module 5, wherein U201 is DC-DC chip, by adjusting the 24th resistance
R204 and the resistance of the 25th resistance R205, can adjust DC-DC chip output voltage within the specific limits, can improve this with this
Power supply range of application, meets the different supply voltage of subsequent conditioning circuit and requires.CT_V+ shown in figure is power supply output of the present invention.
Above embodiments of the invention are described in detail, but described content have been only presently preferred embodiments of the present invention,
It is not to be regarded as the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement etc.,
All should still belong within the patent covering scope of the present invention.
Claims (2)
1. a kind of current transformer high-voltage side bus power-supply circuit it is characterised in that：At least include：
CT electricity taking coil (1)；Described CT electricity taking coil (1) includes primary winding and secondary coil；
Rectification protection module (2)；Described rectification protection module (2) includes two-way TVS pipe, rectifier bridge (B001), the first audion
(Q001)；Described secondary coil is electrically connected with the input terminal of two-way TVS pipe, rectifier bridge (B001) respectively；Described rectifier bridge
(B001) lead-out terminal is electrically connected with protective resistance (R001)；The negative output terminals of described rectifier bridge (B001) pass through the 3rd
Stabilivolt (D003) is electrically connected with the positive output terminals of rectifier bridge (B001)；The negative output terminals of described rectifier bridge (B001)
Electrically connected with the emitter stage of the first audion (Q001) by the second stabilivolt (D002)；The positive pole of described rectifier bridge (B001) is defeated
The colelctor electrode going out terminal with the first audion (Q001) electrically connects；The base stage of described first audion (Q001) passes through the first voltage stabilizing
Pipe (D001) is electrically connected with the positive output terminals of rectifier bridge (B001)；
Switch module (3)；Described switch module (3) includes the second metal-oxide-semiconductor (Q002), the positive pole output of described rectifier bridge (B001)
Terminal is electrically connected with the drain electrode of the second metal-oxide-semiconductor (Q002)；The negative output terminals of described rectifier bridge (B001) and the second metal-oxide-semiconductor
(Q002) source electrode electrical connection；The source ground of described second metal-oxide-semiconductor (Q002)；The cathode output end of described rectifier bridge (B001)
Son is electrically connected with power supply terminal by the 4th diode (D004)；The negative output terminals of described rectifier bridge (B001) pass through the 5th
Diode (D005) is electrically connected with power supply terminal；Described power supply terminal passes through the first electric capacity (C001) and is grounded；Described second metal-oxide-semiconductor
(Q002) grid passes sequentially through second resistance (R002), 3rd resistor (R003) is electrically connected with power supply terminal；Described 2nd MOS
The grid of pipe (Q002) passes sequentially through second resistance (R002), the second electric capacity (C002) is electrically connected with power supply terminal；Described second
The grid of metal-oxide-semiconductor (Q002) passes sequentially through second resistance (R002), the 4th resistance (R004) ground connection；
PWM control module (4)；Described PWM control module (4) includes PWM pulse width modulating chip (U101), and described PWM pulsewidth is adjusted
Model UC2524 of coremaking piece (U101), described power supply terminal passes sequentially through the 13rd resistance (R103), the 14th resistance
(R104) electrically connect with the cathode power supply terminal of PWM pulse width modulating chip (U101)；The benchmark electricity of described PWM control module (4)
Pressure lead-out terminal (VREF) passes sequentially through the 11st resistance (R101), the 12nd resistance (R102) and PWM pulse width modulating chip
(U101) negative power supply terminal electrical connection；12nd pin of described PWM pulse width modulating chip (U101) and the tenth three-prong
Electrically connected with the grid of the second metal-oxide-semiconductor (Q002) by second resistance (R002) after short circuit；
DC-DC Voltage stabilizing module (5)；Described DC-DC Voltage stabilizing module (5) includes DC-DC voltage stabilizing chip (U201), and described DC-DC is steady
Model LM2575 of pressure chip (U201)；15th pin of described PWM pulse width modulating chip (U101) and DC-DC voltage stabilizing core
The input terminal electrical connection of piece (U201)；The FB pin of described DC-DC voltage stabilizing chip (U201) passes through the 24th resistance
(R204) electrically connect with power output terminal (CT V+)；The FB pin of described DC-DC voltage stabilizing chip (U201) passes through the 25th
Resistance (R205) is grounded；Described power output terminal (CT V+) passes sequentially through the 24th resistance (R204), the 25th resistance
(R205) it is grounded；The lead-out terminal of described DC-DC voltage stabilizing chip (U201) passes through inductance (L201) and power output terminal (CT V
+) electrical connection；The lead-out terminal of described DC-DC voltage stabilizing chip (U201) passes sequentially through inductance (L201), the 21st electric capacity
(CE201) it is grounded.
2. current transformer according to claim 1 high-voltage side bus power-supply circuit it is characterised in that：Described CT power taking
Coil (1) is made up of the little iron core of crystallite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611120888.8A CN106410981A (en) | 2016-12-08 | 2016-12-08 | Busbar electricity getting circuit of high-voltage side of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611120888.8A CN106410981A (en) | 2016-12-08 | 2016-12-08 | Busbar electricity getting circuit of high-voltage side of current transformer |
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| CN106410981A true CN106410981A (en) | 2017-02-15 |
Family
ID=58084549
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611120888.8A Withdrawn CN106410981A (en) | 2016-12-08 | 2016-12-08 | Busbar electricity getting circuit of high-voltage side of current transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107645180A (en) * | 2017-08-09 | 2018-01-30 | 东北电力大学 | A kind of low starting current power-supply circuit for cable monitoring |
| CN109586594A (en) * | 2018-12-06 | 2019-04-05 | 安徽凯川电力保护设备有限公司 | A kind of power-switching circuit of wireless temperature measuring device |
| CN116599237A (en) * | 2023-07-17 | 2023-08-15 | 深圳市高斯宝电气技术有限公司 | High-frequency isolation circuit for power grid side of energy storage inverter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162214A (en) * | 1996-03-12 | 1997-10-15 | 常州市船舶电器设备厂 | AC. generator and axle ac generator voltage regulator |
| CN101478183A (en) * | 2009-01-16 | 2009-07-08 | 上海慧东电气设备有限公司 | Apparatus and method for obtaining electricity from high voltage electric cable |
| CN102368637A (en) * | 2011-10-21 | 2012-03-07 | 安徽省电力公司六安供电公司 | Power acquisition device of high-voltage power transmission line |
| CN203039338U (en) * | 2013-02-07 | 2013-07-03 | 浙江南瑞电力自动化有限公司 | A complementary energy acquiring circuit |
| CN104319910A (en) * | 2014-11-06 | 2015-01-28 | 国家电网公司 | Power source energy taking circuit based on high-voltage power transmission line |
| CN105226732A (en) * | 2015-11-16 | 2016-01-06 | 重庆大学 | The draw-out power supply circuit of cable temperature monitoring device |
-
2016
- 2016-12-08 CN CN201611120888.8A patent/CN106410981A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162214A (en) * | 1996-03-12 | 1997-10-15 | 常州市船舶电器设备厂 | AC. generator and axle ac generator voltage regulator |
| CN101478183A (en) * | 2009-01-16 | 2009-07-08 | 上海慧东电气设备有限公司 | Apparatus and method for obtaining electricity from high voltage electric cable |
| CN102368637A (en) * | 2011-10-21 | 2012-03-07 | 安徽省电力公司六安供电公司 | Power acquisition device of high-voltage power transmission line |
| CN203039338U (en) * | 2013-02-07 | 2013-07-03 | 浙江南瑞电力自动化有限公司 | A complementary energy acquiring circuit |
| CN104319910A (en) * | 2014-11-06 | 2015-01-28 | 国家电网公司 | Power source energy taking circuit based on high-voltage power transmission line |
| CN105226732A (en) * | 2015-11-16 | 2016-01-06 | 重庆大学 | The draw-out power supply circuit of cable temperature monitoring device |
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| CN107645180A (en) * | 2017-08-09 | 2018-01-30 | 东北电力大学 | A kind of low starting current power-supply circuit for cable monitoring |
| CN107645180B (en) * | 2017-08-09 | 2019-09-10 | 东北电力大学 | A kind of low starting current power-supply circuit for cable monitoring |
| CN109586594A (en) * | 2018-12-06 | 2019-04-05 | 安徽凯川电力保护设备有限公司 | A kind of power-switching circuit of wireless temperature measuring device |
| CN116599237A (en) * | 2023-07-17 | 2023-08-15 | 深圳市高斯宝电气技术有限公司 | High-frequency isolation circuit for power grid side of energy storage inverter |
| CN116599237B (en) * | 2023-07-17 | 2023-10-17 | 深圳市高斯宝电气技术有限公司 | High-frequency isolation circuit for power grid side of energy storage inverter |
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Application publication date: 20170215 |