CN207184325U - A kind of high-voltage direct current (DC) power system and control device - Google Patents
A kind of high-voltage direct current (DC) power system and control device Download PDFInfo
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- CN207184325U CN207184325U CN201720929490.2U CN201720929490U CN207184325U CN 207184325 U CN207184325 U CN 207184325U CN 201720929490 U CN201720929490 U CN 201720929490U CN 207184325 U CN207184325 U CN 207184325U
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Abstract
A kind of high-voltage direct current (DC) power system and control device are the utility model is related to, control device includes sampling unit, A/D units, D/A units, analog controlling unit and PLC control unit；Sampling unit connects PLC control unit by A/D units, and PLC control unit is sent to for gathering the sampled signal in continuous-current plant, and by A/D units；PLC control unit connects analog controlling unit by D/A units, and analog controlling unit is sent to for sending the output voltage setting value of high voltage direct current source device, and by D/A units；Analog controlling unit also samples the sampled signal that connection sampling unit is used to obtain continuous-current plant, is additionally operable to output control connection high voltage direct current source device.The utility model changes the existing integrated design thinking of high voltage power supply, and high voltage direct current source control device is carried out into modularized design, improves scalability, applicability, maintainability and the security reliability of high-voltage direct current (DC) power system.
Description
Technical field
A kind of high-voltage direct current (DC) power system and control device are the utility model is related to, belongs to high voltage direct current source technology neck
Domain.
Background technology
High-power high voltage continuous-current plant is different from conventional high-power DC power supply device, and its output voltage is higher, tool
There is a higher pressure-resistant demand, the change of component inherent parameters and the influence of parasitic parameter under high voltage so that Same Efficieney
High voltage direct current source device design difficulty it is bigger, security reliability require it is higher.High voltage direct current is source-series and expansion in parallel
The difficulty of appearance is also bigger.Typically integrated power source apparatus is all designed to according to the actual requirements.But such high-voltage power apparatus one
As narrow application range, can not flexibly extend output voltage grade and power output, face output demand change in the case of,
Generally require to re-start design, both add design efforts would and design cost, also extend the project assorted cycle.
Utility model content
The purpose of this utility model is to provide a kind of high-voltage direct current (DC) power system and control device, for solving high voltage power supply
Device output voltage and power output are difficult to the problem of arbitrarily supercharging and dilatation.
In order to solve the above technical problems, the utility model provides a kind of high voltage direct current source control device, including sampling
Unit, A/D units, D/A units, analog controlling unit and PLC control unit；Sampling unit connects PLC controls by A/D units
Unit processed, the sampling unit be used to gathering output current sampled signal and the output voltage sampled signal of continuous-current plant with
And in high voltage direct current source device each HVDC charging module output voltage sampled signal, and be sent to by A/D units
PLC control unit；PLC control unit connects analog controlling unit by D/A units, and the PLC control unit is used to send height
Continuous-current plant output voltage setting value and HVDC charging module output voltage setting value are pressed, and passes through D/A units
It is sent to analog controlling unit；The analog controlling unit also samples the connection sampling unit and is used to obtain high-voltage DC power supply
The output voltage sampled signal of the output voltage sampled signal of device and each HVDC charging module, it is additionally operable to output control company
Connect high voltage direct current source device.
Further, the PLC control unit is also associated with display unit, and the display unit is used to receive and show height
Press continuous-current plant output current sampled signal and output voltage sampled signal and each HVDC charging module it is defeated
Go out voltage sampling signal, be additionally operable to issue high voltage direct current source device output voltage setting value and HVDC charging module is defeated
Go out voltage setting value.
Further, the analog controlling unit also includes being used for all kinds of failures and shape for gathering high voltage direct current source device
The fault status signal acquisition module of state signal, and the event for being handled all kinds of failures and status signal that collect
Hinder status signal processing module；The analog controlling unit communicates to connect PLC control unit, for by all kinds of failures after processing
PLC control unit is sent to status signal.
Further, the display unit includes unit and remote display unit is locally displayed.
Further, the sampling unit includes being used for the output current to high voltage direct current source device, high straightening respectively
At the difference isolation partial pressure that the output voltage of the output voltage and each HVDC charging module that flow supply unit is handled
Manage circuit.
The utility model additionally provides a kind of high-voltage direct current (DC) power system, including high voltage direct current source device and high straightening
Power control is flowed, the high voltage direct current source device includes at least one HVDC charging module, the HVDC
Power control includes sampling unit, A/D units, D/A units, analog controlling unit and PLC control unit；The sampling
The input sampling connection high voltage direct current source device and HVDC charging module, the output end of the sampling unit of unit are led to
Cross A/D units connection PLC control unit, the sampling unit be used for gather continuous-current plant output current sampled signal and
The output voltage sampled signal of each HVDC charging module in output voltage sampled signal and high voltage direct current source device, and
PLC control unit is sent to by A/D units；PLC control unit connects analog controlling unit, the PLC controls by D/A units
Unit processed is used to send high voltage direct current source device output voltage setting value and the setting of HVDC charging module output voltage
Value, and analog controlling unit is sent to by D/A units；The analog controlling unit also samples the connection sampling unit and is used for
The output voltage sampled signal of high voltage direct current source device and the output voltage sampled signal of each HVDC charging module are obtained,
Also output control connection high voltage direct current source device.
Further, the PLC control unit is also associated with display unit, and the display unit is used to receive and show height
Press continuous-current plant output current sampled signal and output voltage sampled signal and each HVDC charging module it is defeated
Go out voltage sampling signal, be additionally operable to issue high voltage direct current source device output voltage setting value and HVDC charging module is defeated
Go out voltage setting value.
Further, the analog controlling unit also includes being used for all kinds of failures and shape for gathering high voltage direct current source device
The fault status signal acquisition module of state signal, and the event for being handled all kinds of failures and status signal that collect
Hinder status signal processing module；The analog controlling unit communicates to connect PLC control unit, for by all kinds of failures after processing
PLC control unit is sent to status signal.
Further, the display unit includes unit and remote display unit is locally displayed.
Further, the sampling unit includes being used for the output current to high voltage direct current source device, high straightening respectively
At the difference isolation partial pressure that the output voltage of the output voltage and each HVDC charging module that flow supply unit is handled
Manage circuit.
The beneficial effects of the utility model are：
The utility model changes the existing integrated design thinking of high voltage power supply, and high-voltage DC power supply is controlled and filled
Carry out modularized design is put, on the premise of the reliable and stable operation of high voltage direct current source device is ensured, substantially increases high straightening
Flow the scalability of power-supply system, applicability, maintainable and security reliability.
Further, the utility model by by the sampling of each HVDC charging module in high voltage direct current source device,
Control and display function carry out centralized Control, substantially reduce the design difficulty of separate unit high direct voltage charging module, improve mould
The free degree of block internal structure layout, reduces the pressure-resistant and interference problem between high pressure and control signal.
Brief description of the drawings
Fig. 1 is the composition schematic diagram of high voltage direct current source control device；
Fig. 2 is the DFD of high voltage direct current source control device；
Fig. 3 is the software configuration schematic diagram of high voltage direct current source control device；
Fig. 4 is the schematic diagram of sampled signal process circuit；
Fig. 5 is the schematic diagram of driving frequency regulation circuit；
Fig. 6 is the schematic diagram of output pulse width fixed width circuit；
Fig. 7 is the schematic diagram of optical drive spacing output circuit；
Fig. 8 is the schematic diagram of failure block drive circuit.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and specifically
The utility model is further elaborated embodiment.
High-voltage direct current (DC) power system provided by the utility model includes high voltage direct current source device and high voltage direct current
Source control device.Wherein, high voltage direct current source device includes one or at least two HVDC charging moulds being connected in series
Block.High voltage direct current source control device is using PLC control unit as core, including sampling unit, A/D units, D/A units, simulation
Control unit, PLC control unit and display unit, its structural representation are as shown in Figure 1.
The input sampling connection high voltage direct current source device of sampling unit, the output end connection A/D units of sampling unit
Input, A/D units output end connection PLC control unit, PLC control unit connection display unit.Sampling unit gathers
Each high pressure in the output current sampled signal and output voltage sampled signal and high voltage direct current source device of continuous-current plant
The output voltage sampled signal of DC charging module, and the sampled signal collected is sent out by A/D units, PLC control unit
Display unit is given to be used to show.PLC control unit also connects analog controlling unit by D/A units, and display unit issues height
Continuous-current plant output voltage setting value and HVDC charging module output voltage setting value are pressed, the setting value is passed through
PLC control unit, D/A units are sent to analog controlling unit.Analog controlling unit sampling connection sampling unit, for obtaining height
The output voltage sampled signal of pressure continuous-current plant and the output voltage sampled signal of each HVDC charging module, and according to
High voltage direct current source device output voltage setting value and HVDC charging module the output voltage setting that display unit issues
It is worth output control signal, control connection high voltage direct current source device.Analog controlling unit also includes being used to gather high voltage direct current
All kinds of failures of source device and the fault status signal acquisition module of status signal, and for all kinds of failures to collecting and
The fault status signal processing module that status signal is handled；Analog controlling unit communicates to connect PLC control unit, for inciting somebody to action
All kinds of failures and status signal after processing are sent to PLC control unit.
Specifically, itself output voltage of HVDC charging module is by RC divider, by real-time output voltage signal
The voltage sample port of the sampling unit of high voltage direct current source control device, high-voltage DC power supply dress are transferred to by coaxial cable
The output voltage and output current put are transmitted to the voltage of sampling unit and adopted by resitstance voltage divider and current Hall sampling respectively
Sample port and current sample port.
Above-mentioned HVDC charging module is actually a kind of high-voltage direct current switch power module, in the present embodiment,
Its output rated voltage is 4KV, and output rated current is 10A.Fig. 2 shows high voltage direct current source control device the whole series control unit
Point DFD, as Fig. 3 gives the software configuration schematic diagram of high voltage direct current source control device, by PLC technology
Device carries out software translating, so as to realize various remote measurements, remote signalling, remote control and the remote regulating function needed for supply unit.
Unit module included in high-voltage DC power supply control device is described in detail below.
(1) sampling unit
The follower that sampling unit is formed using difference amplifier INA826A, difference amplifier 8066 and LM258 carries out related
Analog sampling signal transacting, that is, realize at the difference of DC high-voltage source device output voltage sampled signal isolation partial pressure
Reason, voltage division processing is isolated to the difference of DC high-voltage source device output current sampled signal, and the mould that charged to high direct voltage
The difference isolation voltage division processing of block output voltage sampled signal.
(2) A/D units and D/A units
A/D units use voltage-frequency conversion chip AD654, to realize the DC high-voltage power supply to being treated by sampling unit
Device output voltage sampled signal and current sampling signal, and the A/D of high direct voltage charging module output voltage sampled signal
Conversion；D/A units are using DA chips AD7245 and frequency pressure conversion chip LM231, to realize to being issued to PLC controls by display unit
The DC high-voltage source device output voltage setting value of unit processed and the numeral of high direct voltage charging module output voltage setting value
The D/A conversions of signal.
(3) PLC control unit
PLC control unit is made up of PLC and its expansion module, main to complete what is crossed to passing through A/D cell processings
DC high-voltage source module output voltage sampled digital signal and output current sampled digital signal, and separate unit high direct voltage are filled
Electric module output voltage sampled digital signal is analyzed in real time, number system transition, sets protection limit value, and the numerical value after conversion
Display unit is sent to, the real-time monitoring for power module output situation.Pass through programming Control, solidification switching on and shutting down charging and discharging behaviour
Make flow, failure response operating process, prevent maloperation.
All kinds of failures and the low and high level of status signal treated for analog controlling unit are received, judged, locked
Deposit, classify and reset, and the flow of DC high-voltage source device output is integrated into as the correlated judgment condition in operating process
It is central.Rationalization judgement is carried out for all kinds of operational orders that display unit issues, responds SECO.For under display unit
The continuous-current plant output voltage setting definite value and separate unit high direct voltage charging module signal output voltage setting definite value of hair are entered
Row setting range rationalization judgement, after issuing the steps such as condition rationalization judgement and number system transition, associated control signal is passed
It is defeated by analog controlling unit to be controlled, correlated digital setting signal is transferred to D/A units.
(4) display unit
Display unit, which is divided into, is locally displayed unit and remote display unit.Wherein, unit is locally displayed and uses man-machine interface
The touch-screen of Siemens；The also known as remote control backstage of remote display unit.Led between remote control backstage and PLC control unit using serial ports
News mode carries out data exchange.In order to strengthen the anti-interference under hyperbaric environment, communication physical interface is led to using SC/ST optical fiber
News.Display unit can real-time display DC high-voltage source device running status；The current high voltage direct current source device of real-time display
Output voltage values and output current value；Supply unit relative parameters setting, modification, supply unit control and parameter current are provided
Query function, there is provided present apparatus alerts and device history alarm information searching function.
Certainly, as other embodiments, unit or long-range aobvious simply can also be individually locally displayed in display unit
Show unit.
(5) analog controlling unit
Using analog control circuit come to the sampled signal by being crossed handled by sampling unit and by PLC control unit institute
The output setting signal issued carries out PID regulations, to realize that controller is adjusted to the output closed-loop of DC high-voltage power supply system device
Control；All kinds of failures of DC high-voltage source device and status signal are carried out Phototube Coupling processing, level conversion, latch reset and
Internal fault judges.
As shown in Figure 4：The voltage sampling signal of HVDC charging module after sampling unit is handled passes through difference
Amplifier INA826A, after being amplified filtering process, then isolated by the amplifier LM258 followers formed, then by suitable
When electric resistance partial pressure, be linked into amplifier AD8066 reverse input end, and amplifier AD8066 positive input is then accessed by PLC
The single module charging voltage that control unit sends over adjusts signal.The source of this signal comes from remote back-office or supervised on the spot
The single module output voltage setting value that control display screen issues, this setting value pass through after being automatically performed the conversion of 16 system forms first
Serial communication is transferred to PLC control unit, by the related precision of PLC software in PLC control unit and error school
After just, pass through 12 tunnel standard delivery outlet Parallel opertation, 12 2 system low and high level signals.This 12 tunnel level signal passes through per road
After PC817B light-coupled isolations and level conversion, DA chips AD7245 digital signal input end is linked into, coordinates its peripheral circuit
To realize that the single module charging voltage that the sampled signal of the reverse input end with being linked into amplifier AD8066 is matched adjusts signal.
As shown in Figure 5：Amplifier AD8066 is by being linked into the sampling for adjusting signal and reverse input end of positive input
Signal and the PI adjustment controls loop of itself, the negative feedback control signal of output control charging module output voltage.This is negative anti-
Feedback signal is linked into the input of frequency modulation drive control chip MC33067 error amplifier, with degenerative error signal
Increase, drive control chip MC33067 output driving frequency can be higher, so as to improve the charging voltage of high-voltage charging module,
Reduce error.
Drive control chip MC33067 belongs to dead time fixed frequency modulation control chip, the arteries and veins driven under different frequency
It is wide inconsistent, it is not appropriate for by series resonance as main topological HVDC charging module.As shown in Figure 6：MC33067 is exported
Two-way drive signal AOUT and BOUT have passed through flip and flop generator chip CD4098 again, by adjust respective pin RC join
Number, the new pulse signal with regard to time delay and fixed pulse width can be fixed, tentatively new pulse signal is denoted as
AOUT1 and BOUT1.Compared with AOUT and BOUT signals, driving signal frequency is completely the same, but the arteries and veins of AOUT1 and BOUT1 signals
Rush width and a fixed value is kept under any frequency, so as to be effectively controlled the humorous of HVDC charging module major loop
Shake width so that whole HVDC charging module is preferably in Sofe Switch working condition.
As shown in fig. 7, AOUT1 the and BOUT1 signals by fixed width carry out electric light by optical-electrical converter HFBR1414T and turned
Change, control and power section are realized to HVDC charging module output drive signal by optical fiber in the form of visible ray
Isolation.
The output voltage sampled signal of sampling unit is transferred to except participating in drive signal by HVDC charging module
Control to adjust, be also sent to comparator LM211 reverse input end all the way, the overvoltage protection with being linked into positive input
Setting voltage definite value compares, and caused low and high level, which becomes, is turned to judge HVDC charging module whether sentence by output overvoltage
Disconnected foundation.As shown in figure 8, caused fault-signal directly acts on drive signal AOUT1 and BOUT1, block AOUT1 and
BOUT1 output.In addition, also logic circuit prevents AOUT1 and BOUT1 from the overlapping phenomenon of high level occur.
The fault-signal that HVDC charging module itself judges transfers back to high-voltage DC power supply control dress also by optical fiber
Put, can equally play a part of blocking AOUT1 and BOUT1 output.In addition, high voltage direct current source control device can also be according to not
The failure that same failed access points receive, according to corresponding I/O mouths signal definition, corresponding fault message is fed back to backstage
And monitoring screen.
The voltage sampling signal of high voltage direct current source device after sampling unit is handled passes through difference amplifier
INA826A, it is amplified filtering process.It is to prevent the overvoltage damage control caused by the fluctuation of load or supply unit failure
Circuit, in voltage sample access interface 2 groups of Transient Suppression Diode SMAJ15CA-TVS of parallel connection, suppression is input to chip
INA826A voltage magnitude.Voltage sampling signal after processing passes through after the follower isolation that amplifier LM258 is formed
Appropriate electric resistance partial pressure, it is linked into comparator LM211 reverse input end.And comparator LM211 positive input then accesses
The voltage output limitation voltage definite value of the high voltage direct current source device issued by PLC control unit, the source of this limitation voltage definite value
The supply unit voltage output limitation voltage setting value that head comes from remote back-office or monitoring display screen issues on the spot.The voltage
Setting value is automatically performed after the conversion of 16 system forms and is transferred to PLC control unit by serial communication first, is controlled by PLC
In unit after the related precision of PLC software and error correction, mouth is outputed by PLC high speed, then pass through PC817B light
After coupling isolation and level conversion, in the form of the unit interval exports square-wave pulse number, formed directly proportional to voltage setting value
Frequency signal, then through overfrequency pressure conversion chip LM231 comparator LM211 negative is converted into and is linked into the voltage of input
Signal is adjusted in the supply unit voltage output limitation that sampled signal is matched.
Comparator LM211 is entered by being linked into the voltage sampling signal for adjusting signal and reverse input end of positive input
Row compares, and when high voltage direct current source device output voltage reaches set limit value, exports low level, this low level letter
The drive signal of all high direct voltage charging modules in number temporary block supply unit, whole supply unit, which temporarily ceases, to be filled
Electricity, below supply unit voltage landing to setting value after, level signal upset, then reopen all straight in supply unit
Flow the drive signal of high-voltage charging module.
The current sampling signal of high voltage direct current source device after sampling unit is handled passes through amplifier AD8066 difference
Amplification, due to having passed through Hall isolation, even if can ensure that output current is input in a short-circuit situation by voltage-stabiliser tube clamper
Amplifier AD8066 is also not in too high voltage.The reliability service of chip is ensure that, the current sampling signal warp after processing
After crossing the follower isolation of amplifier LM258 compositions, voltage-frequency conversion chip AD654 is directly connected to, is directly changed into and is adopted with electric current
The directly proportional frequency signal of sample value, the frequency signal are sent to PLC high-speed counting input port, passed through after light-coupled isolation
Internal calculation unit interval pulse number, data signal is formed, for being transferred to the display of monitoring interface and backstage.
High voltage direct current source device voltage sample and the sampling of separate unit high direct voltage module voltage also use identical side
Sampled signal is transferred to PLC control unit in the form of isolating and is used for real-time display by method, and effectively having saved PLC has
The I/O mouths of limit.
The output voltage sampled signal and output current of high voltage power supply control device are passed to by high voltage direct current source device
Sampled signal has been sent to two-way comparator LM211 negative input, with connecing respectively after amplifier LM258 follows isolation
Overvoltage and overcurrent protection the setting definite value entered to positive input is compared, and caused low and high level, which becomes, to be turned to judge electricity
Source device whether export high pressure or supply unit whether the basis for estimation of output overcurrent.Caused fault-signal directly acts on
The drive signal of all high direct voltage charging modules, block drive signal and supply unit output.In addition, high voltage power supply control dress
Putting can also show the fault message of overvoltage or excessively stream to backstage and monitoring screen.
High voltage direct current source control device of the present utility model at most can the moulds of 10 HVDCs of control process charging simultaneously
The various types of signal of block and processing of classifying, the control protection and control of fling-cut switch, track the work shape that each module feedback is returned
Whether state, automatic decision cut off the high-voltage switch gear being connected with supply unit, connect continuous current circuit work, and adjust automatically residual mode
The operating voltage of block, keep the stabilization of supply unit output voltage.By by each direct current height belonging to DC high-voltage source device
Drive control, sampling and the defencive function centralized Control of charging module are pressed, substantially reduces the design of separate unit high-voltage charging module
Difficulty, the free degree of inside modules topology layout is improved, reduces the pressure-resistant and interference problem between high pressure and control signal,
So that high voltage power supply operation is more stable, reliable, equipment safety is higher.
Claims (10)
1. a kind of high voltage direct current source control device, it is characterised in that including sampling unit, A/D units, D/A units, simulation control
Unit processed and PLC control unit；Sampling unit connects PLC control unit by A/D units, and the sampling unit is used to gather
Each high pressure in the output current sampled signal and output voltage sampled signal and high voltage direct current source device of continuous-current plant
The output voltage sampled signal of DC charging module, and PLC control unit is sent to by A/D units；PLC control unit passes through
D/A units connect analog controlling unit, and the PLC control unit is used to send high voltage direct current source device output voltage setting value
And HVDC charging module output voltage setting value, and analog controlling unit is sent to by D/A units；The simulation control
Unit processed, which also samples, connects output voltage sampled signal and Ge Gao that the sampling unit is used to obtain high voltage direct current source device
The output voltage sampled signal of straightening current charge module, it is additionally operable to output control connection high voltage direct current source device.
2. high voltage direct current source control device according to claim 1, it is characterised in that the PLC control unit also connects
It is connected to display unit, the display unit is used for the output current sampled signal for receiving and showing high voltage direct current source device and defeated
Go out the output voltage sampled signal of voltage sampling signal and each HVDC charging module, be additionally operable to issue high-voltage DC power supply
Device output voltage setting value and HVDC charging module output voltage setting value.
3. high voltage direct current source control device according to claim 2, it is characterised in that the analog controlling unit also wraps
Include for gathering all kinds of failures of high voltage direct current source device and the fault status signal acquisition module of status signal, and be used for
The fault status signal processing module that all kinds of failures and status signal that collect are handled；The analog controlling unit leads to
Letter connection PLC control unit, for all kinds of failures after processing and status signal to be sent into PLC control unit.
4. the high voltage direct current source control device according to Claims 2 or 3, it is characterised in that the display unit includes
Unit and remote display unit is locally displayed.
5. high voltage direct current source control device according to claim 1 or 2, it is characterised in that the sampling unit includes
For the output current to high voltage direct current source device respectively, the output voltage of high voltage direct current source device and each HVDC
The difference isolation voltage division processing circuit that the output voltage of charging module is handled.
6. a kind of high-voltage direct current (DC) power system, including high voltage direct current source device and high voltage direct current source control device, described
High voltage direct current source device includes at least one HVDC charging module, it is characterised in that the high-voltage DC power supply control
Device includes sampling unit, A/D units, D/A units, analog controlling unit and PLC control unit；The sampling unit it is defeated
Enter end sampling connection high voltage direct current source device and HVDC charging module, the output end of the sampling unit are mono- by A/D
Member connection PLC control unit, the sampling unit are used for the output current sampled signal for gathering continuous-current plant and output electricity
The output voltage sampled signal of each HVDC charging module in sampled signal and high voltage direct current source device is pressed, and passes through A/
D units are sent to PLC control unit；PLC control unit connects analog controlling unit, the PLC control unit by D/A units
For sending high voltage direct current source device output voltage setting value and HVDC charging module output voltage setting value, and lead to
Cross D/A units and be sent to analog controlling unit；The analog controlling unit also samples the connection sampling unit and is used to obtain height
The output voltage sampled signal of continuous-current plant and the output voltage sampled signal of each HVDC charging module are pressed, is also exported
Control connection high voltage direct current source device.
7. high-voltage direct current (DC) power system according to claim 6, it is characterised in that the PLC control unit is also associated with
Display unit, the display unit are used for the output current sampled signal for receiving and showing high voltage direct current source device and output electricity
Sampled signal and the output voltage sampled signal of each HVDC charging module are pressed, is additionally operable to issue high voltage direct current source device
Output voltage setting value and HVDC charging module output voltage setting value.
8. high-voltage direct current (DC) power system according to claim 7, it is characterised in that the analog controlling unit also includes using
In all kinds of failures of collection high voltage direct current source device and the fault status signal acquisition module of status signal, and for adopting
The fault status signal processing module that all kinds of failures and status signal collected are handled；The analog controlling unit communication link
PLC control unit is connect, for all kinds of failures after processing and status signal to be sent into PLC control unit.
9. the high-voltage direct current (DC) power system according to claim 7 or 8, it is characterised in that the display unit includes local
Display unit and remote display unit.
10. the high-voltage direct current (DC) power system according to claim 6 or 7, it is characterised in that the sampling unit includes being used for
Output current to high voltage direct current source device, the output voltage of high voltage direct current source device and the charging of each HVDC respectively
The difference isolation voltage division processing circuit that the output voltage of module is handled.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900084A (en) * | 2018-07-13 | 2018-11-27 | 东南大学 | A kind of direct current-direct current voltage changer of remote numerical control |
| CN109143941A (en) * | 2018-10-19 | 2019-01-04 | 陕西科技大学 | A kind of detector system high voltage power supply and its monitoring method |
| CN109813957A (en) * | 2019-04-01 | 2019-05-28 | 深圳供电局有限公司 | DC leakage current detects sensing device and DC leakage current detection system |
| CN115133783A (en) * | 2022-08-30 | 2022-09-30 | 合肥博雷电气有限公司 | Therapeutic instrument high voltage power supply circuit |
| CN117559610A (en) * | 2024-01-10 | 2024-02-13 | 云南山高新能源有限公司 | Emergency protection system for electric automobile during high-voltage charging |
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- 2017-07-27 CN CN201720929490.2U patent/CN207184325U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900084A (en) * | 2018-07-13 | 2018-11-27 | 东南大学 | A kind of direct current-direct current voltage changer of remote numerical control |
| CN109143941A (en) * | 2018-10-19 | 2019-01-04 | 陕西科技大学 | A kind of detector system high voltage power supply and its monitoring method |
| CN109813957A (en) * | 2019-04-01 | 2019-05-28 | 深圳供电局有限公司 | DC leakage current detects sensing device and DC leakage current detection system |
| CN115133783A (en) * | 2022-08-30 | 2022-09-30 | 合肥博雷电气有限公司 | Therapeutic instrument high voltage power supply circuit |
| CN117559610A (en) * | 2024-01-10 | 2024-02-13 | 云南山高新能源有限公司 | Emergency protection system for electric automobile during high-voltage charging |
| CN117559610B (en) * | 2024-01-10 | 2024-03-19 | 云南山高新能源有限公司 | Emergency protection system for electric automobile during high-voltage charging |
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