CN208752434U - A kind of power supply device - Google Patents
A kind of power supply device Download PDFInfo
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- CN208752434U CN208752434U CN201821810559.0U CN201821810559U CN208752434U CN 208752434 U CN208752434 U CN 208752434U CN 201821810559 U CN201821810559 U CN 201821810559U CN 208752434 U CN208752434 U CN 208752434U
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Abstract
The utility model belongs to technical field of power systems, and in particular to a kind of power supply device.For being currently used for the not accurate enough deficiency of the power supply device of breaker its direct current resistance m easurem ent, the utility model adopts the following technical solution: a kind of power supply device, with alternating current input interface, the first via power supply includes accessory power supply, controller and test power supply, the controller built-in A/D converter；Second road power supply includes direct current operative power source, the separating brake output interface and combined floodgate output interface that are connected respectively with direct current operative power source；The power supply device converts analog signals into digital signal by converter by the output voltage of sampling direct current operative power source and the output electric current at operation coil resistance both ends, then is calculated by controller, and the DC resistance of operation coil is obtained.The beneficial effect of the power supply device of the utility model is: directly measurement switching on and off operates coil D.C. resistance, remains to accurately measure in the case where having rectifier bridge in secondary circuit.
Description
Technical field
The utility model belongs to technical field of power systems, and in particular to a kind of power supply device.
Background technique
Vacuum circuit breaker switching on and off coil is close with the action message of breaker as the important component in division, lock circuit
Cut phase is closed.It, will if high-pressure vacuum breaker misaction occurs because of sub-gate circuit failure when accident occurs for electric system
Leapfrog separating brake is caused, accident is seriously expanded, causes large-area power-cuts.And when closing circuit failure leads to breaker can not can closing
When lock, it will make route that can not restore electricity, seriously affect power supply reliability.Switching on and off coil D.C. resistance as the component most
Important electric parameter decides the working performance of switching on and off buckle releaser.
However, being currently used for the power supply device of breaker, closing coil, the direct current resistance m easurem ent of opening coil are not quasi- enough
Really, to influence the reliability service of breaker.
Summary of the invention
The utility model, which is directed to, is currently used for the not accurate enough deficiency of the power supply device of breaker its direct current resistance m easurem ent, mentions
For a kind of power supply device, coil resistance measures accurate stable, breaker stabilization reliable for operation.
To achieve the above objectives, the present invention adopts the following technical solutions: a kind of power supply device, has alternating current input
Interface, the power supply device further include the first via power supply being connected respectively with alternating current input interface, the second road power supply, third road
Power supply, the first via power supply include accessory power supply, controller and test power supply, and the accessory power supply is electric to controller and test
Source power supply, the first via power supply further include the DC/DC converter being connected with accessory power supply and close with what DC/DC converter was connected
Lock output interface, the controller built-in A/D converter；Second road power supply include direct current operative power source, respectively with direct current grasp
Make power supply connected separating brake output interface and combined floodgate output interface；The three-way power includes energy storage output interface, the storage
Energy output interface is directly connected to alternating current input interface and/or direct current operative power source；The power supply device passes through sampling direct current behaviour
The output electric current of the output voltage and operation coil resistance both ends of making power supply converts analog signals into number by converter
Word signal, then calculated by controller, obtain the DC resistance of operation coil.
The power supply device of the utility model inputs 220V alternating current, is divided into three-way power, first via power supply includes auxiliary switch
Power supply ,+5 ,+12 voltage of voltage regulation needed for generation device, the work of the devices such as supply controller, the second road power supply is high power DC
AC power source is transformed to adjustable direct current operative power source, then is controlled and exported by divide-shut brake control circuit by operation power module, the
Three-way power is accumulation power supply, is directly fed or by inputting 220V alternating current by direct current operative power source module offer DC energy storage
Power supply；By switching on and off output interface, directly measurement switching on and off operates coil D.C. resistance, there is rectifier bridge in secondary circuit
In the case where remain to accurately measure.The power supply device of the utility model merges direct current resistance m easurem ent function.
As an improvement, the controller embedded digital isolator, the measurement of the output voltage of the direct current operative power source are adopted
With direct measuring type, i.e., after output voltage being decayed to small signal, by filtering and handle, be sent into converter, using number every
The digital signal after conversion is sent to controller from device.For the direct current of measurement operation coil during breaker actuation
Resistance, it is necessary to the voltage and current data of real-time sampling operation power output loop, then calculated by algorithm.Operate voltage
Measurement uses direct measuring type, after output voltage is decayed to small signal, by filtering and handling, converter is sent into, using number
Digital signal after conversion is sent to controller by word isolator.
As an improvement, the measurement of the output electric current of the direct current operative power source is measured indirectly using Hall sensor.Using
Hall sensor sampled current signals, have not only effectively been isolated forceful electric power and weak electrical loop, also eliminate a large amount of electric power loops and post
Raw interference signal.
As an improvement, the test power supply is constant current output power supply.Test loop uses constant current mode, on the one hand can keep away
Exempt from external short circuit and causes measurement power supply damage；On the other hand constant output electric current, it is highly beneficial to the measurement of resistance loop, it can
To improve the accuracy and stability of measurement.
As an improvement, the test circuit of the test power supply includes metal-oxide-semiconductor, error comparator, sample resistance and a reference source.
As an improvement, the power supply device further includes the input-output equipment being connected respectively with controller, the input is set
Standby includes rotation mouse and key, the output equipment include display screen.
As an improvement, the power supply device further includes prompt equipment, the prompt equipment includes indicator light and/or buzzing
Device.
As an improvement, the power supply device further includes the USB interface being connected with controller.
As an improvement, the power supply device includes panel, the panel be equipped with power switch, alternating current input interface,
Separating brake output interface, combined floodgate output interface, energy storage output interface, locking output interface, rotation mouse, key, display screen, USB
Interface.
As an improvement, the controller built-in real-time clock, counter.
The beneficial effect of the power supply device of the utility model is: having three-way power, can carry out breaking-closing operating, close a floodgate and close
Lock output, motor energy storage output, and divide-shut brake output interface, directly measurement breaking-closing operating coil D.C. resistance can be passed through；
By switching on and off output interface, directly measurement switching on and off operates coil D.C. resistance, there is the feelings of rectifier bridge in secondary circuit
It remains to accurately measure under condition.
Detailed description of the invention
Fig. 1 is the framework map of the three-way power of the power supply device of the utility model embodiment.
Fig. 2 is the structural block diagram of the control system of the power supply device of the utility model embodiment.
Fig. 3 is the structural schematic diagram at the panel of the power supply device of the utility model embodiment.
Fig. 4 is the functional block diagram of the power supply device measuring coil resistance of the utility model embodiment.
Fig. 5 is the functional block diagram of the power supply device output of locking power supply and accumulation power supply output of the utility model embodiment.
Fig. 6 is the circuit diagram of the DC resistance of the power supply device measurement operation coil of the utility model embodiment.
Fig. 7 is the circuit diagram of the power supply device test power supply constant-current circuit of the utility model embodiment.
Fig. 8 is the current sample channel of the power supply device of the utility model embodiment and the circuit theory in voltage sample channel
Figure.
Fig. 9 is the circuit theory of the output of locking power supply and the accumulation power supply output of the power supply device of the utility model embodiment
Figure.
In figure, 1, panel；
2, alternating current input interface；
3, separating brake output interface；
4, combined floodgate output interface；
5, energy storage output interface；
6, it is latched output interface；
7, indicator light；
8, key；
9, power switch；
10, mouse is rotated；
11, USB interface；
12, display screen.
Specific embodiment
Below with reference to the attached drawing of the invention embodiment, the technical solution of the invention embodiment is explained and
Illustrate, but following embodiments are only the preferred embodiment of the invention, and not all.Based on the implementation example in the implementation mode,
Those skilled in the art's other embodiments obtained without making creative work, belong to the invention
Protection scope.
Referring to Fig. 1 to Fig. 5, a kind of power supply device, have alternating current input interface, the power supply device further include respectively with
The connected first via power supply of alternating current input interface, the second road power supply, three-way power, the first via power supply include auxiliary electricity
Source, controller and test power supply, the accessory power supply is to controller and tests power supply power supply；Second road power supply includes direct current
Operation power, the separating brake output interface being connected respectively with direct current operative power source and combined floodgate output interface；The three-way power packet
Energy storage output interface is included, the energy storage output interface is directly connected to alternating current input interface and/or direct current operative power source.
220V can be exchanged input alternating current, be divided into three-way power, first via power supply is by the power supply device of the utility model
Including accessory power supply ,+5 ,+12 voltage of voltage regulation needed for generation device, supply controller component and relay work；Second tunnel
Power supply is high power DC operation power, AC power source is transformed to adjustable direct current operative power source, then control electricity by divide-shut brake
Road output；Three-way power is accumulation power supply, is directly fed by 220V exchange input electricity or is mentioned by direct current operative power source module
For.
Embodiment one
Referring to Fig. 1 to Fig. 5, a kind of power supply device has alternating current input interface 2, and the power supply device further includes difference
First via power supply, the second road power supply, three-way power being connected with alternating current input interface 2, the first via power supply includes auxiliary
Power supply, controller and test power supply are helped, the accessory power supply is to controller and tests power supply power supply；Second road power supply includes
Direct current operative power source, the separating brake output interface 3 being connected respectively with direct current operative power source and combined floodgate output interface 4；The third road
Power supply includes energy storage output interface 5, and the energy storage output interface 5 is directly connected to alternating current input interface 2 and/or DC operation electricity
Source.
Referring to Fig. 1 to 3, as an improvement, the first via power supply further include the DC/DC converter being connected with accessory power supply and
The locking output interface 6 being connected with DC/DC converter.
As an improvement, the power supply device further includes the input-output equipment being connected respectively with controller, the input is set
Standby includes rotation mouse 10 and key 8, the output equipment include display screen 12.
As an improvement, the power supply device further includes prompt equipment, the prompt equipment includes indicator light 7 and/or buzzing
Device.
As an improvement, the power supply device further includes the usb 11 being connected with controller.
As an improvement, the power supply device includes panel 1, the panel 1 is equipped with power switch 9, alternating current input connects
Mouthfuls 2, separating brake output interface 3, combined floodgate output interface 4, energy storage output interface 5, locking output interface 6, rotation mouse 10, key 8,
Display screen 12, usb 11.
As an improvement, the controller built-in real-time clock, counter, converter.
Control system selects high-performance ARM controller as the system core, carry 240*128 big screen display screen 12, rotation
Turn the peripheral hardwares such as mouse 10, USB controller, real-time clock, memory, electricity is exported by the data acquisition that converter is read in isolation
Pressure value and current value, and operation coil D.C. resistance is calculated by complicated algorithm.
Controller selects STM32F103VBT6, and work is under 72MHz dominant frequency, built-in 128KB program storage and 64KB
Data storage, 100 pins provide the largely available end I/O, and 3 USART serial ports, 2 SPI interfaces, 1 I2C interface are interior
Setting timer, counter, converter makes the simpler convenience of circuit design.1 controller of usb 1 selects CH375, can be real
The existing master/slave mode of USB, can also can both be communicated with external USB flash disk with PC machine.In addition PCF8563 clock chip has also been selected
With AT24C512 memory.
As an improvement, the measurement of the voltage of the direct current operative power source uses direct measuring type；The direct current operative power source it is defeated
Electric current is measured indirectly using Hall sensor out.
Built-in direct current operative power source module has a series of protection electricity such as over-voltages, overload, short circuit, overheat and time-out
Road, it is ensured that power supply is safe and reliable when exporting.
Referring to Fig. 3, panel 1 is equipped with alternating current input interface 2, power switch 9, separating brake output interface 3, combined floodgate and exports and connect
Mouth 4, energy storage output interface 5, locking output interface 6, indicator light 7, key 8, rotation mouse 10, usb 11, display screen 12.
Separating brake output interface includes separating brake interface and negative interface, and combined floodgate output interface includes combined floodgate interface and negative interface, and separating brake output connects
Mouth 3 and combined floodgate output interface 4 share negative interface, are equipped with indicator light between separating brake interface and negative interface, combined floodgate interface and negative interface.
Being latched output interface 6 includes positive interface and negative interface, and indicator light is equipped between positive interface and negative interface.Energy storage output interface 5 includes
Positive interface and negative interface are equipped with indicator light between positive interface and negative interface.Separating brake, combined floodgate, energy storage three are equipped with below display screen 12
Key 8.Display screen 12 is located at 1 center of panel, separating brake output interface 3, combined floodgate output interface 4, locking output interface 6, storage
It can output interface 5, alternating current input interface 2, power switch 9, rotation mouse 10, energy storage key 8, combined floodgate key 8, separating brake key
8, usb 11 and ground connection wall are arranged around display screen 12 clockwise.
Referring to fig. 4, as an improvement, the test power supply uses constant current output mode, pass through the electric current in sampled measurements circuit
Digital signal is converted analog signals by converter with the voltage at coil resistance both ends, then is counted by controller
It calculates, obtains the DC resistance of operation coil.
For the D.C. resistance of measurement operation coil during breaker actuation, it is necessary to the output of real-time sampling operation power
The voltage and current data in circuit, then calculated by algorithm.The measurement for operating voltage uses direct measuring type, and output voltage is declined
After being kept to small signal, by filtering and handling, it is sent into converter, passes the digital signal after conversion using digital isolator
It send to controller.
Converter uses AD7920 serial A/D converter, it is 12 high speeds, low-power consumption, SAR ADCs, uses
2.35 V to 5.25 V single supplies power, and highest handling capacity is up to 250 ksps.A low noise built in device, wide bandwidth sampling/
Hold amplifier can handle the input frequency of 6 MHz or more.Conversion process and data acquisition by CS and serial clock into
Row control, to be created condition for device with microprocessor or dsp interface.The device is without pipelining delay.AD7920 is used
Advanced designing technique can realize extremely low power consumption in the case where high-throughput.Reference voltage is obtained from VDD, to be ADC
Widest dynamic input range is provided, therefore, simulation input range is 0 to V DD.
Using the ADuM2402 four-way digital isolator with ICoupler device.These isolating devices by high-speed cmos with
Single-chip air-core transformer technology combines together, has the outstanding performance characteristic better than alternative devices such as photo-couplers.
ICoupler device does not have to LED and photodiode, because difficult design generally relevant to photo-coupler may be not present.Simply
It is uncertain, non-can to eliminate the current transfer ratio that photo-coupler usually has for iCoupler digital interface and stable performance feature
The problems such as linear transfer function and temperature and service life influence.In addition, in the comparable situation of signal data rate,
The power consumption of iCoupler device only has the 1/10 to 1/6 of photo-coupler.It is logical that ADuM2402 isolator provides four independent isolation
A variety of channels configurations and data rate are supported in road.It is worked using 2.7V to 5.5V supply voltage, it is compatible with low-pressure system, and
Voltage conversion function can be realized across isolated gate.In addition, ADuM2402 has low pulse width distortion (CRWZ grades are less than 2ns)
With stringent interchannel matching (CRWZ grades are less than 2ns) characteristic.Different from other photo-couplers, ADuM2402 isolator has
Obtain patent new property, it can be ensured that there is no input logic conversion when and power on/turn-off criterion under direct current correctness.
The output electric current of operation power selects the high-performance Hall sensor of Chengdu crystalline substance peak production using measurement indirectly, design
JT10, the sensor belong to magnetic balancing current sensor, can measure ac and dc current signal, and working power DC ± 12V~
± 15V, Measurement bandwidth direct current ~ 20KHZ measure random waveform, power consumption≤40mA ~≤120mA response time≤5 μ s, tracking speed
Di/dt >=50A μ s is spent, the linearity 0.1% measures aperture Φ 26mm, and secondary side output can really reflect the waveform of primary current.It adopts
With Hall sensor sampled current signals, forceful electric power and weak electrical loop has not only effectively been isolated, has also eliminated a large amount of electric power loops
Parasitic interference signal.
Referring to Fig. 6, the test power supply of coil resistance is using constant current output mode, and 0.5A constant-current source is by metal-oxide-semiconductor, error
Comparator, sample resistance, a reference source and interlock circuit composition.Test loop uses constant current mode, on the one hand can be to avoid outer
Portion's short circuit causes measurement power supply damage；On the other hand constant output electric current, Ke Yiti highly beneficial to the measurement of resistance loop
The accuracy and stability of high measurement.
In order to can solve influence of the secondary circuit jackshaft heap to measurement, software design carries out primary respectively under different voltages
Measurement, the sample resistance that R1, R2 are respectively measured twice in figure, Rx is the coil resistance to be measured, can be with by measuring twice
It is as follows to list formula:
I1*(R1+Rx)+Vf1=VCC1
I2*(R2+Rx)+Vf2=VCC2
Bridge heap is made of 4 diodes, if loop current I1, I2 is not much different in measurement twice, according to diode
On state characteristic curve it can be concluded that Vf1 ≈ Vf2, can thus solve linear equation in two unknowns group, calculate coil resistance Rx
Value.
Referring to Fig. 7, MOSFET pipe Q1, the resistance R4 and voltage-stabiliser tube D1 of the measurement power supply of 30V/1A form constant-current source circuit,
When measurement terminates to operation lines circle both ends, electric current flows through circuit, generates pressure drop on resistance R3, is used for sampled current signals,
Output end can sample and operate the voltage signal at coil both ends simultaneously.
Referring to Fig. 8, voltage signal SV and current signal SI respectively enter the electric current being made of amplifier U1, A/D converter U3
Sampling channel and the voltage sample channel being made of amplifier U5, U6, A/D converter U4.Data after conversion, by by SDA,
SCK and CS signal line group at spi bus be sent to controller and calculated.
Referring to Fig. 5 and Fig. 9, as an improvement, the direct current operative power source is the adjustable DC power supply of 30V-270V, it is described straight
Flowing operation power includes push-pull type switching power circuit.
Electric main output generates two-way power supply, is accessory power supply all the way, is the adjustable DC power supply of 30V-270V all the way.
Accessory power supply supply controller and interlock circuit work；Adjustable DC power supply can be adjusted continuously under the pressure regulation signal of controller
Pressure, for meeting different energy storage and blocking voltage requirement.Adjustable DC power supply by PWM generator U2, MOSFET pipe Q1, Q2,
High-frequency isolation boost transformer, comparator U3 and other interlock circuits composition.Circuit uses off-line type and recommends Switching Power Supply
Design scheme, can in the wider voltage range of 30V-270 continuous voltage regulating, output ripple is small, and comparator U3 is designed as overloading
Circuit is protected, the driving output of PWM generator U2 is rapidly switched off when loading output short-circuit, to protect DC power supply.
Adjustable DC power supply by PWM generator U2, MOSFET pipe Q1, Q2, high-frequency isolation boost transformer, comparator U3 and
Other interlock circuits composition.Circuit uses the design scheme that off-line type recommends Switching Power Supply, can be in the wider electricity of 30V-270
Continuous voltage regulating in range is pressed, output ripple is small, and comparator U3 is designed as overload protecting circuit, quickly closes when loading output short-circuit
The driving output of disconnected PWM generator U2, to protect DC power supply.
The beneficial effect of the power supply device of the utility model embodiment one is: having three-way power, can carry out divide-shut brake behaviour
Make, closing locking output, motor energy storage output, and divide-shut brake output interface 4, directly measurement breaking-closing operating coil can be passed through
D.C. resistance；The data acquisition output voltage values and current value of converter are read by isolation, and are calculated by complicated algorithm
Coil D.C. resistance is operated out；By switching on and off output interface, directly measurement switching on and off operates coil D.C. resistance, secondary
It remains to accurately measure in the case where having rectifier bridge in circuit；When breaking-closing operating, 20-270V adjustable DC power supply is exported, controllably
System point closes two-way output, maximum output current 15A；During closing locking, independent closing locking out-put supply, 110V,
Two grades of 220V outputs, before output of closing a floodgate, first output unlock voltage, issues closing operation order again automatically after delay；Motor storage
Can: alternating current 220V, direct current 110V, the control output of direct current 220V third gear motor tank voltage.
The above, the only specific embodiment of the invention, but the protection scope of the invention does not limit to
In this, being familiar with the those skilled in the art should be understood that the invention includes but is not limited to attached drawing and specific embodiment party above
Content described in formula.The modification of any function and structure principle without departing from the invention is intended to be included in claims
Range in.
Claims (10)
1. a kind of power supply device, there is alternating current input interface, it is characterised in that: the power supply device further include respectively with exchange
The connected first via power supply of electric input interface, the second road power supply, three-way power, the first via power supply include accessory power supply,
Controller and test power supply, the accessory power supply to controller and test power supply power supply, the first via power supply further include with it is auxiliary
The DC/DC converter for helping power supply connected and the locking output interface being connected with DC/DC converter, AD conversion built in the controller
Device；Second road power supply includes direct current operative power source, the separating brake output interface and combined floodgate that are connected respectively with direct current operative power source
Output interface；The three-way power includes energy storage output interface, and the energy storage output interface is directly connected to alternating current input and connects
Mouth and/or direct current operative power source；The output voltage and operation coil resistance that the power supply device passes through sampling direct current operative power source
The output electric current at both ends converts analog signals into digital signal by converter, then is calculated by controller, obtains
Operate the DC resistance of coil.
2. a kind of power supply device according to claim 1, it is characterised in that: the controller embedded digital isolator, institute
The measurement of the output voltage of direct current operative power source is stated using direct measuring type, i.e., after output voltage being decayed to small signal, by filtering
And processing, it is sent into converter, the digital signal after conversion is sent to controller using digital isolator.
3. a kind of power supply device according to claim 1, it is characterised in that: the output electric current of the direct current operative power source
Measurement is measured indirectly using Hall sensor.
4. a kind of power supply device according to claim 1, it is characterised in that: the test power supply is constant current output power supply.
5. a kind of power supply device according to claim 4, it is characterised in that: it is described test power supply test circuit include
Metal-oxide-semiconductor, error comparator, sample resistance and a reference source.
6. a kind of power supply device according to claim 1, it is characterised in that: the power supply device further include respectively with control
The connected input-output equipment of device, the input equipment includes rotation mouse and key, the output equipment include display screen.
7. a kind of power supply device according to claim 6, it is characterised in that: the power supply device further includes prompt equipment,
The prompt equipment includes indicator light and/or buzzer.
8. a kind of power supply device according to claim 7, it is characterised in that: the power supply device further includes and controller phase
USB interface even.
9. a kind of power supply device according to claim 8, it is characterised in that: the power supply device includes panel, the face
Plate is defeated equipped with power switch, alternating current input interface, separating brake output interface, combined floodgate output interface, energy storage output interface, locking
Outgoing interface, rotation mouse, key, display screen, USB interface.
10. a kind of power supply device according to claim 1, it is characterised in that: the controller built-in real-time clock counts
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821810559.0U CN208752434U (en) | 2018-11-05 | 2018-11-05 | A kind of power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821810559.0U CN208752434U (en) | 2018-11-05 | 2018-11-05 | A kind of power supply device |
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| CN208752434U true CN208752434U (en) | 2019-04-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492443A (en) * | 2019-09-05 | 2019-11-22 | 广东电网有限责任公司 | 10kV switchgear secondary component real-time monitoring protective device |
| CN111366787A (en) * | 2020-03-22 | 2020-07-03 | 广西电网有限责任公司电力科学研究院 | Method and equipment for testing direct current resistance of capacitor discharge coil |
| CN112104276A (en) * | 2020-08-21 | 2020-12-18 | 岭澳核电有限公司 | Power supply output circuit of excitation regulator of nuclear power plant |
-
2018
- 2018-11-05 CN CN201821810559.0U patent/CN208752434U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492443A (en) * | 2019-09-05 | 2019-11-22 | 广东电网有限责任公司 | 10kV switchgear secondary component real-time monitoring protective device |
| CN111366787A (en) * | 2020-03-22 | 2020-07-03 | 广西电网有限责任公司电力科学研究院 | Method and equipment for testing direct current resistance of capacitor discharge coil |
| CN111366787B (en) * | 2020-03-22 | 2022-07-12 | 广西电网有限责任公司电力科学研究院 | Method and equipment for testing direct current resistance of capacitor discharge coil |
| CN112104276A (en) * | 2020-08-21 | 2020-12-18 | 岭澳核电有限公司 | Power supply output circuit of excitation regulator of nuclear power plant |
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