CN110323931A - A kind of redundancy trigger circuit comprising state feedback function - Google Patents
A kind of redundancy trigger circuit comprising state feedback function Download PDFInfo
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- CN110323931A CN110323931A CN201910752844.4A CN201910752844A CN110323931A CN 110323931 A CN110323931 A CN 110323931A CN 201910752844 A CN201910752844 A CN 201910752844A CN 110323931 A CN110323931 A CN 110323931A
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- 239000013307 optical fiber Substances 0.000 claims abstract description 95
- 238000001514 detection method Methods 0.000 claims abstract description 30
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
-
- 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
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
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Abstract
A kind of redundancy trigger circuit comprising state feedback function, including first switch power supply, second switch power supply, trigger circuit, full control switching device, redundancy trigger circuit, the first feedback optical fiber, the second feedback optical fiber, optical fiber driving circuit.It further include cell voltage sample circuit and hardware over-voltage detection circuit.This includes the redundancy trigger circuit of state feedback function, power supply, trigger circuit and the state-feedback circuit etc. of redundancy are increased on the basis of above-mentioned traditional design, when the bypass trigger circuit of traditional circuit configuration, power supply, triggering optical fiber or feedback optical fiber, when any one breaks down, bypass commands can be continued to execute and feed back bypass condition, to ensure equipment reliability service.
Description
Technical field
The present invention relates to power electronics field, in particular to a kind of redundancy comprising state feedback function triggers electricity
Road.
Background technique
The bridge arm and cascade connection type reactive power compensator of MMC flexible direct-current current transmission valve, cascade connection type active filter,
The major loop structure of the copped wave unit of the inversion unit and cascade connection type continuous-current plant of cascaded high-voltage converter plant is
It is made of many power unit cascades, when power module breaks down, should be able to reliably bypass, ensure that equipment continues to run.
Way traditional at present is only to configure a set of bypass trigger circuit, one group of power supply and one group of bypass triggering and feedback optical fiber,
Before bypass contactor closure, circuit is statelessly fed back, and the working condition for bypassing trigger circuit is unknown, and when bypass triggering electricity
Road, power supply, triggering optical fiber or feedback optical fiber, any one failure can all cause the case where bypassing contact tripping, into
And will cause equipment and integrally trip stoppage in transit, reliability has to be hoisted.
Summary of the invention
In order to solve the problems, such as described in background technique, the present invention provides a kind of redundancy triggering electricity comprising state feedback function
Road.This includes the redundancy trigger circuit of state feedback function, and the power supply electricity of redundancy is increased on the basis of above-mentioned traditional design
Source, trigger circuit and state-feedback circuit etc., when the bypass trigger circuit of traditional circuit configuration, power supply, triggering optical fiber
Or feedback optical fiber can continue to execute bypass commands and feed back bypass condition, to ensure that equipment can when any one breaks down
By operation.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of redundancy trigger circuit comprising state feedback function, including first switch power supply, second switch power supply, triggering
Circuit controls switching device, redundancy trigger circuit, the first feedback optical fiber, the second feedback optical fiber, optical fiber driving circuit entirely.
First switch power supply, trigger circuit are powered by basic power supply, and second switch power supply, redundancy trigger circuit are by superfluous
Remaining power supply power supply；The output end of first switch power supply and the output end of second switch power supply provide two for optical fiber driving circuit
Road redundant power.
The first external optical fiber trigger signal of trigger circuit input terminal connection, outside redundancy trigger circuit input terminal connects
Second optical fiber trigger signal, trigger circuit and redundancy trigger circuit output end are all connected with the coil of bypass contactor.
The signal input part of optical fiber driving circuit connects the status signal output of trigger circuit, redundancy trigger circuit, light
The signal output end of fine driving circuit is connected to the control terminal of full control switching device.
One end of the auxiliary contact of the lower end and bypass contactor of full control switching device is grounded jointly, and upper end is contacted with bypass
After the other end connection of the auxiliary contact of device, for the signal output end of full control switching device, the full control terminal for controlling switching device connects
Connect the signal output end of optical fiber driving circuit.
Power supply one end of first feedback optical fiber connects first switch power supply, power supply one end connection second of the second feedback optical fiber
The signal that the power supply other end of Switching Power Supply, the first feedback optical fiber and the second feedback optical fiber is commonly connected to control switching device entirely is defeated
Outlet；The signal output end of first feedback optical fiber is the first feedback signal terminal；The signal output end of second feedback optical fiber is second
Feedback signal terminal.
Further, the trigger circuit include the first storage capacitor, the first divider resistance, the first hysteresis loop comparator,
First isolated drive circuit and the first controllable switch device, the high voltage supply end of trigger circuit are basic power supply, and low pressure supplies
Electric end is first switch power supply, and high voltage supply end is grounded via the first storage capacitor, and the first optical fiber trigger signal is connected to first
The input terminal of isolated drive circuit, the output end of the first isolated drive circuit connect the trigger control end of the first controllable devices, the
One controllable switch device upper end connects high voltage supply end, and lower end is the output end of trigger circuit, is connected to the line of bypass contactor
Circle.In trigger circuit, the first divider resistance upper end connects high voltage supply end, and partial pressure output end is exported via the first hysteresis loop comparator
First energy storage state signal, is sent to optical fiber driving circuit.
Further, the redundancy trigger circuit compares including the second storage capacitor, the second divider resistance, the second hysteresis
Device, the second isolated drive circuit and the second controllable switch device, the high voltage supply end of redundancy trigger circuit are redundant power supply power supply,
Low-voltage power supply end is second switch power supply, and high voltage supply end is grounded via the second storage capacitor, the connection of the second optical fiber trigger signal
To the input terminal of the second isolated drive circuit, the output end of the second isolated drive circuit connects the triggering control of the second controllable devices
End, the second controllable switch device upper end connect high voltage supply end, and lower end is the output end of redundancy trigger circuit, are connected to bypass and connect
The coil of tentaculum.In redundancy trigger circuit, the second divider resistance upper end connects high voltage supply end, and partial pressure output end is stagnant via second
It returns comparator and exports the second energy storage state signal, be sent to optical fiber driving circuit.
It further, further include cell voltage sample circuit and hardware over-voltage detection circuit, the redundancy trigger circuit
Input terminal be also connected with hardware over-voltage detection circuit；The electricity of hardware over-voltage detection circuit input terminal connection unit voltage sampling circuit
Output end is pressed, output end is connected to the input terminal of redundancy trigger circuit.
The over-voltage trigger signal of hardware over-voltage detection circuit output is in parallel with the second optical fiber trigger signal to be connected to the simultaneously
The input terminal of two isolated drive circuits.
The hardware over-voltage detection circuit includes third hysteresis loop comparator and third divider resistance, and third divider resistance is defeated
Entering the input terminal that end is hardware over-voltage detection circuit, the partial pressure output end of third divider resistance connects third hysteresis loop comparator, the
The output end of three hysteresis loop comparators is the output end of hardware over-voltage detection circuit.
The input end signal of the cell voltage sample circuit is derived from the main circuit voltage end of equipment, cell voltage sampling
Circuit is scaling circuit.The main circuit voltage end of the equipment is the shunt capacitor in bridge architecture power cell
Anode.The output end of the cell voltage sample circuit is additionally coupled to the input terminal of optical fiber driving circuit.
Further, the optical fiber driving circuit includes main control MCU, and the power end of main control MCU, which passes through, reversely to be docked
Two diodes are separately connected first switch power supply and second switch power supply, the input port connection trigger circuit of main control MCU, superfluous
The status signal output of remaining trigger circuit, output port are connected to the drive control end of full control switching device.
Compared with prior art, the beneficial effects of the present invention are:
1) a kind of redundancy trigger circuit comprising state feedback function proposed by the present invention is supplied using power supply and redundancy
Power supply is powered simultaneously, high reliablity.
2) a kind of redundancy trigger circuit comprising state feedback function proposed by the present invention, in the triggering of redundancy trigger circuit
In addition end is provided with cell voltage sample circuit and hardware over-voltage detection circuit, can be triggered, be disobeyed in hardware over-voltage
Rely external fiber trigger signal.
3) a kind of redundancy trigger circuit comprising state feedback function proposed by the present invention uses optical fiber driving circuit,
Can by redundancy trigger circuit, trigger circuit, unit sampling multiple status information unified feedbacks, pass through the full control derailing switch of control
Multiple status informations are sent to the master control system of equipment, facilitate system identification by the on-off of part.
4) a kind of redundancy trigger circuit comprising state feedback function proposed by the present invention is triggered using double optical fiber, and
The form of double optical fiber feedbacks, the intersection triggering between power cell, cross feedback provide hardware foundation, flexible in application.
Detailed description of the invention
Fig. 1 is a kind of redundancy trigger circuit block topology comprising state feedback function of the invention；
Fig. 2 is trigger circuit figure of the invention；
Fig. 3 is redundancy trigger circuit figure of the invention；
Fig. 4 is hardware over-voltage detection circuit figure of the invention；
Fig. 5 is cell voltage sample circuit figure of the invention；
Fig. 6 is optical fiber driving circuit figure of the invention；
Fig. 7 is the anode voltage sample point of the shunt capacitor in bridge architecture power cell provided in an embodiment of the present invention
Figure.
In figure: 1- first switch power supply 2- trigger circuit 3- controls the limit of switching device 4- redundancy trigger circuit 5- first entirely
Leakage resistance 6- first feeds back the feedback of optical fiber 7- second the second current-limiting resistance of optical fiber 8- 9- optical fiber driving circuit 10- second and opens
Powered-down source 11- hardware over-voltage detection circuit 12- cell voltage sample circuit 13- the first optical fiber trigger signal 14- first is anti-
Feedback signal end 15- the second feedback signal terminal 16- the second optical fiber trigger signal 17- voltage sample point VDC+.
Specific embodiment
Specific embodiment provided by the invention is described in detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of redundancy trigger circuit comprising state feedback function, including first switch power supply 1, second open
Powered-down source 10, trigger circuit 2, full control switching device 3, redundancy trigger circuit 4, first feed back optical fiber 6, second and feed back optical fiber 7, light
Fine driving circuit 9.It further include cell voltage sample circuit 12 and hardware over-voltage detection circuit 11,
First switch power supply 1, trigger circuit 2 are powered by basic power supply, second switch power supply 10, redundancy trigger circuit
4 by redundant power supply power supply power supply；The output end VCC-1 of first switch power supply 1 and the output end VCC-2 of second switch power supply 10 are
Optical fiber driving circuit provides two-way redundant power.
The first optical fiber trigger signal 13 outside the connection of 2 input terminal of trigger circuit, the connection of 4 input terminal of redundancy trigger circuit are outer
The second optical fiber trigger signal 16 in portion, trigger circuit 2 and 4 output end of redundancy trigger circuit are all connected with the coil of bypass contactor.
The input terminal of the redundancy trigger circuit 4 is also connected with hardware over-voltage detection circuit 11；11 input terminal of hardware over-voltage detection circuit
The voltage output end of connection unit voltage sampling circuit 12, output end are connected to the input terminal of redundancy trigger circuit 4.
The signal input part of optical fiber driving circuit 9 connects the status signal output of trigger circuit 2, redundancy trigger circuit 4,
The signal output end of optical fiber driving circuit 9 is connected to the control terminal of full control switching device 3.
The signal output end of the gate pole connection optical fiber driving circuit 9 of full control switching device 3, drains auxiliary with bypass contactor
One end of contact is helped to be grounded jointly, after the other end connection of the auxiliary contact of source electrode and bypass contactor, for full control switching device 3
Signal output end.The full control switching device 3 is that GTO, MOSFET, IGBT, triode or relay are one such, figure
Embodiment is MOSFET in 1.
Power supply one end of first feedback optical fiber 6 connects first switch power supply 1, the second feedback light by the first current-limiting resistance 5
Power supply one end of fibre 7 connects second switch power supply 10, the first feedback optical fiber 6 and the second feedback optical fiber 7 by the second current-limiting resistance 8
The power supply other end be commonly connected to entirely control switching device 3 signal output end；The signal output end of first feedback optical fiber 6 is the
One feedback signal terminal 14；The signal output end of second feedback optical fiber 7 is the second feedback signal terminal 15.
As shown in Figs. 1-2, the trigger circuit 2 includes the first storage capacitor C1, the first divider resistance R2 and R3, first
Hysteresis loop comparator A1, the first isolated drive circuit T1 (the present embodiment is isolating transformer, can also be made of triode every
From driving circuit etc.) and the first controllable switch device SCR1, the high voltage supply end L-1 of trigger circuit 2 is basic power supply, low
Pressure feeder ear VCC1 is first switch power supply, and high voltage supply end L-1 is grounded via the first storage capacitor C1, the first optical fiber triggering letter
Numbers 13 are connected to the primary side input terminal of the first isolated drive circuit T1, the first isolated drive circuit T1 by fiber optic receiver Q1
Secondary side output end connect the first controllable switch device SCR1 trigger control end, the first controllable switch upper end device SCR1 connect
High voltage supply end L-1 is met, lower end is the output end of trigger circuit, is connected to the coil of bypass contactor.In trigger circuit 2, the
One divider resistance R2 connects high voltage supply end L-1 with the upper end R3, and partial pressure output end is via the first hysteresis loop comparator A1 output first
Energy storage state signal is sent to optical fiber driving circuit 9.
As shown in Figure 1,3, the redundancy trigger circuit 4 include the second storage capacitor C2, the second divider resistance R5 and R6,
Second hysteresis loop comparator A2, (the present embodiment is isolating transformer to the second isolated drive circuit T2, can also be and is made of triode
Isolated drive circuit etc.) and the second controllable switch device SCR2, the high voltage supply end L-2 of redundancy trigger circuit 4 is redundant power supply
Power supply, low-voltage power supply end VCC2 are second switch power supply 10, and high voltage supply end L-2 is grounded via the second storage capacitor C2, hardware
The over-voltage trigger signal that over-voltage detection circuit 11 exports (is received by field-effect tube Q3 and the second optical fiber trigger signal by optical fiber
Device Q2) input terminal in parallel for being connected to the second isolated drive circuit T2 simultaneously.The output end of second isolated drive circuit T2 connects
The trigger control end of second controllable switch device SCR2, the second controllable switch upper end device SCR2 connect high voltage supply end L-2, under
End is the output end of redundancy trigger circuit, is connected to the coil of bypass contactor.In redundancy trigger circuit 4, the second divider resistance
The upper end R5 with R6 connects high voltage supply end L-2, and partial pressure output end exports the second energy storage state letter via the second hysteresis loop comparator A2
Number, it is sent to optical fiber driving circuit 9.
The first controllable switch device SCR1 and the second controllable switch device SCR2 be thyristor, GTO, MOSFET,
IGBT is one such, and embodiment is thyristor in figure.
As shown in Fig. 1,4, the hardware over-voltage detection circuit 11 includes third hysteresis loop comparator A3 and third partial pressure electricity
R41 and R42 is hindered, third divider resistance R41 and R42 input terminal is the input terminal VDC/X of hardware over-voltage detection circuit, third partial pressure
Resistance R41 connects third hysteresis loop comparator A3 with the partial pressure output end of R42, and the output end of third hysteresis loop comparator A3 is hardware mistake
Press the output end of detection circuit 11.
As shown in Figure 1,5, the input end signal of the cell voltage sample circuit 12 is derived from the main circuit voltage of equipment
VDC+ is held, cell voltage sample circuit is scaling circuit.Scaling circuit is by calculation amplifier A4 and its surrounding resistance
R51-R53 is connected and composed.As shown in fig. 7, with bridge arm (the cascade connection type reactive power compensator, grade of MMC flexible direct-current current transmission valve
The copped wave unit of connection type active filter, the inversion unit of cascaded high-voltage converter plant and cascade connection type continuous-current plant
It is same) full bridge power unit for, the main circuit voltage end of the equipment be it is in bridge architecture power cell and
Join the anode VDC+ of capacitor C.The output end of the cell voltage sample circuit 12 is also connected to as voltage detection signal
The input terminal of optical fiber driving circuit 9.
As a shown in Figure 6, the optical fiber driving circuit 9 includes main control MCU, and it is reversed right that the power end of main control MCU passes through
Two the diodes D1 and D2 connect are separately connected the VCC-1 of first switch power supply 1 and the VCC-2 of second switch power supply 10, master control
The input port of MCU connects the status signal output and cell voltage sample circuit 12 of trigger circuit, redundancy trigger circuit
Output end, output port is connected to the drive control end of full control switching device 3.
As shown in figs. 1-7, the process that a kind of redundancy trigger circuit comprising state feedback function of the present embodiment works is such as
Under: (1) redundancy trigger circuit starting comprising state feedback function before, first switch power supply 1, trigger circuit 2, redundancy triggering electricity
Road 4, optical fiber driving circuit 9, second switch power supply 10, hardware over-voltage detection circuit 11, cell voltage sample circuit 12 not work
Make.At this point, the thyristor SCR2 of redundancy trigger circuit 4 and the thyristor SCR1 of trigger circuit 2 are in off state, with bypass
The full control switching device 3 of contactor auxiliary contact parallel connection is in off state, at this time the defeated trigger signal 13 and second of the first optical fiber
16 invalidating signal of optical fiber trigger signal, the first feedback signal terminal 14 and the second feedback signal terminal 15 are exported without optical signal；
(2) it after power supply powers on, powers for trigger circuit 2, the charging resistor R1 of triggered circuit 2 is to energy-storage capacitor
C1 charging；
(3) it after power supply powers on, powers for first switch power supply 1, the output VCC-1 of first switch power supply 1, with second
The output VCC-2 redundancy of Switching Power Supply is the power supply of optical fiber driving circuit 9.
(4) it after redundant power supply power supply electrifying, powers for redundancy trigger circuit 4, the charging resistor R4 through redundancy trigger circuit 4
It charges to energy-storage capacitor C2.
(5) it after redundant power supply power supply electrifying, powers for second switch power supply 10, the output VCC-2 of second switch power supply 10,
It is the power supply of optical fiber driving circuit 9 with VCC-1 redundancy.
(6) 9 trigger collection circuit 2 of optical fiber driving circuit, redundancy trigger circuit 4 and supply voltage sample circuit 12
Output state, and corresponding different digital output signal (such as: PWM mode signal) is exported according to status information；
(7) the full control derailing switch of optical fiber driving circuit 9 exports PWM mode signal control and bypass contactor auxiliary contact
The on-off of part 3 exports corresponding optical signal with the first feedback optical fiber 6 of driving and the second feedback optical fiber 7；Pass through the first feedback signal
End 14 and the second feedback signal terminal 15 are to the master control system report triggering circuit 2 of equipment, 4 state of redundancy trigger circuit and unit
Voltage detection signal.
(8) the signal input of cell voltage sample circuit 12 is derived from the capacitor C direct current anode of power cell, i.e. VDC+,
Voltage is become to the VDC/X of equal proportion using ratio circuit；
(9) hardware over-voltage detection circuit 11 detects that the output signal of cell voltage sample circuit 12 is more than third hysteresis ratio
When voltage reference VREF compared with device A3, trigger signal is sent to redundancy trigger circuit 4.
(10) after the storage capacitor C1 charging complete of trigger circuit 2, it can receive the control of the first optical fiber trigger signal 13,
Trigger bypass contactor closure；
(11) after the storage capacitor C2 charging complete of redundancy trigger circuit 4, it can receive the second optical fiber trigger signal 16
Trigger bypass contactor closure；The output signal control that hardware over-voltage detection circuit 11 can also be received, can be in hardware over-voltage
When triggering bypass contactor closure, do not depend on external fiber trigger signal.
(12) trigger circuit 2 and redundancy trigger circuit 4 can trigger bypass contactor, control bypass contactor
Contact closure.
(13) after the auxiliary contact closure of bypass contactor, it is grounded the source electrode for controlling switching device 3 entirely after auxiliary contact,
The output end of control switching device 3 is always low level entirely at this time, and the first feedback optical fiber 6 and the second feedback optical fiber 7 are replaced by on-off
State, become being always on state, be bypass contactor closed state, pass through the first feedback signal terminal 14 and the second feedback letter
Number end 15 to master control system report bypass contactor it is closed.After bypass contactor closure, it is complete control switching device 3 no longer by
The control of optical fiber driving circuit 9 does not detect signal to outgoing to trigger circuit 2,4 state of redundancy trigger circuit and cell voltage
It send.
It should be understood by those skilled in the art that illustrated above is only presently preferred embodiments of the present invention, not to this hair
Bright to make any form of restriction, although the present invention is disclosed above with preferred embodiments, however, it is not intended to limit the invention, appoints
What those skilled in the art, without departing from the scope of the present invention, when using the disclosure above method and
Technology contents make a little change or the equivalent embodiment for being modified to equivalent variations, but all without departing from technical solution of the present invention
Content, any simple modification, equivalent change and modification made to the above embodiment, still belong to according to the technical essence of the invention
In the range of technical solution of the present invention.
Above to a kind of redundancy trigger circuit comprising state feedback function provided by the present invention, detailed Jie has been carried out
It continues, used herein a specific example illustrates the principle and implementation of the invention, and the explanation of above embodiments is only
It is to be used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to this hair
Bright thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not manage
Solution is limitation of the present invention.
Claims (14)
1. a kind of redundancy trigger circuit comprising state feedback function, which is characterized in that including first switch power supply, second switch
Power supply, trigger circuit control switching device, redundancy trigger circuit, the first feedback optical fiber, the second feedback optical fiber, optical fiber driving electricity entirely
Road；
First switch power supply, trigger circuit are powered by basic power supply, and second switch power supply, redundancy trigger circuit are supplied by redundancy
Electric power supply power supply；It is superfluous that the output end of first switch power supply and the output end of second switch power supply for optical fiber driving circuit provide two-way
Remaining power supply；
The first external optical fiber trigger signal of trigger circuit input terminal connection, redundancy trigger circuit input terminal connect outside second
Optical fiber trigger signal, trigger circuit and redundancy trigger circuit output end are all connected with the coil of bypass contactor；
The signal input part of optical fiber driving circuit connects the status signal output of trigger circuit, redundancy trigger circuit, and optical fiber drives
The signal output end of dynamic circuit is connected to the control terminal of full control switching device；
One end of the auxiliary contact of the lower end and bypass contactor of full control switching device is grounded jointly, upper end and bypass contactor
After the other end connection of auxiliary contact, for the signal output end of full control switching device, the full control terminal for controlling switching device connects light
The signal output end of fine driving circuit；
Power supply one end of first feedback optical fiber connects first switch power supply, and power supply one end of the second feedback optical fiber connects second switch
The signal that the power supply other end of power supply, the first feedback optical fiber and the second feedback optical fiber is commonly connected to control switching device entirely exports
End；The signal output end of first feedback optical fiber is the first feedback signal terminal；The signal output end of second feedback optical fiber is second anti-
Feedback signal end.
2. a kind of redundancy trigger circuit comprising state feedback function according to claim 1, which is characterized in that described
Trigger circuit includes that the first storage capacitor, the first divider resistance, the first hysteresis loop comparator, the first isolated drive circuit and first can
Switching device is controlled, the high voltage supply end of trigger circuit is basic power supply, and low-voltage power supply end is first switch power supply, and high pressure supplies
Electric end is grounded via the first storage capacitor, and the first optical fiber trigger signal is connected to the input terminal of the first isolated drive circuit, and first
The output end of isolated drive circuit connects the trigger control end of the first controllable switch device, the connection of the first controllable switch device upper end
High voltage supply end, lower end are the output end of trigger circuit, are connected to the coil of bypass contactor.
3. a kind of redundancy trigger circuit comprising state feedback function according to claim 2, which is characterized in that triggering electricity
Lu Zhong, the first divider resistance upper end connect high voltage supply end, and partial pressure output end exports the first energy storage via the first hysteresis loop comparator
Status signal is sent to optical fiber driving circuit.
4. a kind of redundancy trigger circuit comprising state feedback function according to claim 1, which is characterized in that described
Redundancy trigger circuit includes the second storage capacitor, the second divider resistance, the second hysteresis loop comparator, the second isolated drive circuit and the
Two controllable switch devices, the high voltage supply end of redundancy trigger circuit are redundant power supply power supply, and low-voltage power supply end is second switch electricity
Source, high voltage supply end are grounded via the second storage capacitor, and the second optical fiber trigger signal is connected to the defeated of the second isolated drive circuit
Enter end, the output end of the second isolated drive circuit connects the trigger control end of the second controllable switch device, the second controllable switch device
Part upper end connects high voltage supply end, and lower end is the output end of redundancy trigger circuit, is connected to the coil of bypass contactor.
5. a kind of redundancy trigger circuit comprising state feedback function according to claim 4, which is characterized in that redundancy touching
In Power Generation Road, the second divider resistance upper end connects high voltage supply end, and partial pressure output end is via the second hysteresis loop comparator output second
Energy storage state signal, is sent to optical fiber driving circuit.
6. a kind of redundancy trigger circuit comprising state feedback function according to claim 1, which is characterized in that further include
Cell voltage sample circuit and hardware over-voltage detection circuit, the input terminal of the redundancy trigger circuit are also connected with hardware over-voltage inspection
Slowdown monitoring circuit；The voltage output end of hardware over-voltage detection circuit input terminal connection unit voltage sampling circuit, output end output overvoltage
Trigger signal is connected to the input terminal of redundancy trigger circuit.
7. a kind of redundancy trigger circuit comprising state feedback function according to claim 4 or 6, which is characterized in that hard
The over-voltage trigger signal and the second optical fiber trigger signal of part over-voltage detection circuit output are connected in parallel to the of redundancy trigger circuit
The input terminal of two isolated drive circuits.
8. a kind of redundancy trigger circuit comprising state feedback function according to claim 6, which is characterized in that described
Hardware over-voltage detection circuit includes third hysteresis loop comparator and third divider resistance, and third divider resistance input terminal is hardware over-voltage
The partial pressure output end of the input terminal of detection circuit, third divider resistance connects third hysteresis loop comparator, third hysteresis loop comparator
Output end is the output end of hardware over-voltage detection circuit.
9. a kind of redundancy trigger circuit comprising state feedback function according to claim 6, which is characterized in that described
The input end signal of cell voltage sample circuit is derived from the main circuit voltage end of equipment, and cell voltage sample circuit is scale operation
Circuit.
10. a kind of redundancy trigger circuit comprising state feedback function according to claim 9, which is characterized in that described
Equipment main circuit voltage end be bridge architecture power cell in shunt capacitor anode.
11. a kind of redundancy trigger circuit comprising state feedback function according to claim 6, which is characterized in that described
The output end of cell voltage sample circuit be also used as voltage detection signal to be connected to the input terminal of optical fiber driving circuit.
12. a kind of redundancy trigger circuit comprising state feedback function according to claim 1, which is characterized in that described
Optical fiber driving circuit include main control MCU, the power end of main control MCU passes through two diodes reversely docked and is separately connected first
Switching Power Supply and second switch power supply, the input port connection trigger circuit of main control MCU, the status signal of redundancy trigger circuit are defeated
Outlet, output port are connected to the drive control end of full control switching device.
13. a kind of redundancy trigger circuit comprising state feedback function according to claim 1, which is characterized in that described
Full control switching device be GTO, MOSFET, IGBT, triode or relay it is one such.
14. a kind of redundancy trigger circuit comprising state feedback function according to claim 2 or 4, which is characterized in that institute
The the first controllable switch device and the second controllable switch device stated are thyristor, GTO, MOSFET, IGBT are one such.
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| CN110323931B (en) | 2024-05-10 |
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