CN105337409B - For the protection device of IEC61850 protocol conversion apparatus - Google Patents
For the protection device of IEC61850 protocol conversion apparatus Download PDFInfo
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Abstract
A kind of protection device for IEC61850 protocol conversion apparatus, including current feedback circuit, drive error feedback circuit, fault feedback circuit, switch controlling signal generative circuit and locking signal generative circuit.The protection device for IEC61850 protocol conversion apparatus of the present invention realizes the mode of automatically and manually two kinds of excision equipments; in the case of all electic protection failures; when cannot complete automatic excision equipment; artificial excision equipment in a manual fashion can be carried out; ensure access grid equipment can safe and stable operation, so as to ensure the stable operation of correspondent section electrical network.The protection device simple and stable of the present invention, low cost, it is easily achieved, its Universal and scalability is conducive to the marketing of protection device.
Description
Technical field
The present invention relates to a kind of protection device, relates in particular to a kind of protection for IEC61850 protocol conversion apparatus
Device.
Background technology
With the fast development and the popularization of intelligent grid equipment application of power system, various numerals, simulation in transformer station
The access amount of equipment is increasing, meanwhile, same transformer station is also faced with the access of different manufacturers system equipment and platform, because
This, just arises at the historic moment for seamless integration and the access grid equipment for accessing, for example, intelligent grid signal pickup assembly,
IEC61850 protocol conversion apparatus etc., which also can be used as a kind of Modern communication devices.Access the various protections of grid equipment itself
Become a key technology of its stable operation, and the foundation stone for accessing grid equipment safety and stability.According to《Chinese people's republicanism
State machinery industry standard JB/T11067-2011》In technical requirements, it is desirable to electric imitating signal collecting device should have excessively stream,
The self-protection functions such as overvoltage, it is also the necessary condition for improving abatement equipment performance to carry out these protections, makes intelligent grid signal
Collection and these various working conditions for accessing grid equipments such as IEC61850 protocol conversion apparatus are in stable state, and after
The basis of level circuital current frequency analysis, thus, the general protective circuit for accessing grid equipment becomes raising access grid equipment
Efficiency, the important content of stability.
Intelligent grid signals collecting and IEC61850 protocol conversion apparatus etc. these access grid equipments in all include mostly
There is high-power IGBT module, which is the core component of the transmission, conversion and its process control of realizing electric energy, and it makes the use of electric energy
It is more efficient, more energy efficient, more environmentally friendly, " thick electricity " is changed into into " essence electricity ", therefore it is the basic technology and core technology of energy-saving and emission-reduction.
But, due to the characteristic of IGBT device, which is easy to breakdown because of overvoltage/excessively stream or excess temperature, causes the failure of IGBT device.
Due to the importance and device property of these high-power IGBT modules, therefore, existing great majority access grid equipment itself and all set
In respect of IGBT overvoltage overheat protector modules.But, its be only capable of to access grid equipment in high-power IGBT module realize excessively stream,
Overvoltage, overheat protector, can not carry out comprehensive excessively stream, overvoltage and error protection to the whole grid equipment that accesses.
For this purpose, lot of domestic and international scholar proposes different comprehensive method of protections, such as using integrated protection system, or
Guard method using multistep treatment etc., but, so all considerably increase using the technology intelligent grid signals collecting and
IEC61850 protocol conversion apparatus etc. these access grid equipments cost.
The content of the invention
For this purpose, the technical problem to be solved is to overcome guard method of the prior art and equipment cost high
Defect, propose a kind of simple and stable, low cost, the protection device for IEC61850 protocol conversion apparatus being easily achieved.
To solve above-mentioned technical problem, a kind of protection device for IEC61850 protocol conversion apparatus of the present invention, bag
Include：
Current feedback circuit is crossed, for receiving three-phase over-current signal, and comprehensive excessively stream is generated according to the three-phase over-current signal
Signal；
Drive error feedback circuit, for receiving three-phase drive rub-out signal, and according to the three-phase drive rub-out signal
Generate comprehensive drive error signal；
Fault feedback circuit, for receiving the over-pressed signal, described from the high-power IGBT accessed in grid equipment
The excess temperature signal of IGBT, the comprehensive over-current signal and the comprehensive drive error signal, and according to the overvoltage letter of the IGBT
Number, the excess temperature signal of the IGBT, the comprehensive over-current signal and the comprehensive drive error signal generation resultant fault signal；
Switch controlling signal generative circuit, for generating the group switch control signal for accessing grid equipment；
Locking signal generative circuit, for receiving the resultant fault signal and the group switch control signal, and root
Locking signal is generated according to the resultant fault signal and the group switch control signal to export to the access grid equipment, with
The control power on/off for accessing grid equipment.
Preferably, the switch controlling signal generative circuit includes：
Hand switch control signal generative circuit, for generating hand switch control signal；
First switch control signal synthetic circuit, for receiving the intelligence from the microcontroller for accessing grid equipment
Switch controlling signal and the hand switch control signal, and according to the intelligent switching control signal and the hand switch control
Group switch control signal described in signal generation processed.
Preferably, the switch controlling signal generative circuit includes：
Hand switch control signal generative circuit, for generating hand switch control signal；
First switch control signal synthetic circuit, for receiving the intelligence from the microcontroller for accessing grid equipment
Switch controlling signal and the hand switch control signal, and according to the intelligent switching control signal and the hand switch control
Signal generation processed first group switch control signal；
Second switch control signal synthetic circuit, for receiving from the strong electrical control circuit for accessing grid equipment
Electric switch control signal and the first group switch control signal, and according to the electric switch control signal and described
One group switch control signal generates the group switch control signal.
Preferably, the hand switch control signal generative circuit includes switch and electric capacity；The switch includes that one is moved
End and two static sides, when first position is placed in, the moved end is turned on the first static side, when the second place is placed in, described dynamic
End is turned on the second static side；First static side is connected with power end, and second static side is connected with earth terminal, the moved end with
The input connection of the first switch control signal synthetic circuit；The electric capacity is connected across the first static side of the switch and
Between two static sides.
Preferably, the first switch control signal synthetic circuit and the second switch control signal synthetic circuit are adopted
Realized with gate circuit.
Preferably, current feedback circuit, the drive error feedback circuit and the fault feedback circuit crossed is adopted
Gate circuit is realizing.
Preferably, circuit of the gate circuit for the one or more combination in OR gate and door, not gate and XOR gate.
Preferably, the locking signal generative circuit include the 3rd OR gate chip, first resistor, second resistance, first
Optical diode and the first triode, the first input end of the 3rd OR gate chip are connected with the output end of the fault feedback circuit
Connect, its second input is connected with the output end of the switch controlling signal generative circuit, its output end and the first resistor
One end connection；The other end of the first resistor is connected with the base stage of first triode；First triode send out
Emitter-base bandgap grading is connected with earth terminal, and its colelctor electrode is connected with one end of first light emitting diode；First light emitting diode
The other end is connected with one end of the second resistance；The other end of the second resistance is connected with power end；One or three pole
The output end of the extremely described locking signal of the current collection of pipe.
Preferably, the protection device also includes failure indicating circuit, and the failure indicating circuit includes the event of three-phase excessively stream
Barrier indicating circuit, three-phase drive fault indicating circuit, IGBT over-voltage faults indicating circuit and IGBT excess temperatures indicating fault electricity
Road；
The three-phase over current fault indicating circuit includes the second light emitting diode and 3rd resistor, second light-emitting diodes
One end of pipe is connected with the output end for crossing current feedback circuit, and the other end is connected with one end of the 3rd resistor；Described
The other end of three resistance is connected with power end；
The three-phase drive fault indicating circuit includes the 3rd light emitting diode and the 4th resistance, and the described 3rd lights
One end of diode is connected with the output end of the drive error feedback circuit, and the other end is connected with one end of the 4th resistance
Connect；The other end of the 4th resistance is connected with power end；
The IGBT over-voltage faults indicating circuit includes the 4th light emitting diode and the 5th resistance, the 4th light-emitting diodes
One end of pipe is input into the over-pressed signal of the IGBT, and the other end is connected with one end of the 5th resistance；5th resistance
The other end is connected with power end；
The IGBT excess temperatures failure indicating circuit includes the 5th light emitting diode and the 6th resistance, the 5th light-emitting diodes
One end of pipe is input into the excess temperature signal of the IGBT, and the other end is connected with one end of the 6th resistance；6th resistance
The other end is connected with power end.
Preferably, the protection device also includes electrical control signal generative circuit；
The electrical control signal generative circuit includes the second triode and the 7th resistance；One end of 7th resistance with
The output end connection of the fault feedback circuit, its other end are connected with the base stage of second triode；Two or three pole
The emitter stage of pipe is connected with earth terminal, the output end of the extremely described electrical control signal of its current collection.
The above-mentioned technical proposal of the present invention has advantages below compared to existing technology：
The over-pressed signal of the IGBT that the protection device of the present invention is provided using the protection circuit of existing high-power IGBT module
With the excess temperature signal of IGBT, and three-phase over-current signal and three-phase drive rub-out signal are combined, form comprehensive through circuit synthesis process
Fault-signal is closed, can be used to realize that the three-phase excessively stream of access grid equipment, three-phase drive mistake, IGBT are over-pressed, IGBT excess temperatures
The function of fault alarm, is capable of achieving excision equipment by the group switch control signal that switch controlling signal generative circuit is provided
Function so that access grid equipment can safe and stable operation, so as to ensure the stable operation of correspondent section electrical network.
The present invention protection device also by the way of automatically and manually two kinds of excision equipments, in all electic protection failures
In the case of, it is impossible to when completing automatic excision equipment, artificial excision equipment in a manual fashion can be carried out, it is ensured that access electrical network
The safety of equipment.In addition, have also been devised two ways in the mode of the automatic excision equipment of the protection device：Using monolithic
The intelligent switching control signal that the microcontrollers such as machine, DSP are provided is come the control mode realized and using outside heavy-current control electricity
Come the control mode realized, forward and backward person is conducive to when the protection device of the present invention electric switch control signal provided by road
When judging to exist the situation of three-phase excessively stream, three-phase drive mistake, IGBT overvoltages, IGBT excess temperatures or fault alarm etc., can be immediately
Directly control accesses the break-make of grid equipment, and protection accesses the safety of grid equipment；The former also help by microcontroller with
The process of programming is controlled, and meets and accesses breakdown judge and security control of the grid equipment in various design requirements,
Ensure to access the safe and stable operation of grid equipment.By the excision mode to accessing grid equipment devise it is above-mentioned manually, from
Dynamic various ways, increased the possibility of various control, in case in the case of a kind of possible failure by it is alternatively possible come
Control is realized, better assures that access grid equipment being capable of safe and stable operation.It is simultaneously also electric, intelligent by devising
Control mode, is that the protection device of the present invention increased Universal and scalability.
The protection device of the present invention employs failure indicating circuit, can be with the presence or absence of three-phase excessively stream, three-phase drive mistake
By mistake, IGBT is over-pressed and IGBT excess temperature failures are indicated in the form of fault alarm, facilitates user in real time, intuitively can sentence
Break and with the presence or absence of above failure condition, grid equipment is accessed with timely excision, protection accesses grid equipment and correspondent section electrical network
Safety.
Circuit function of the protection device of the present invention per part clearly, simple and stable, be easily achieved, it is anti-with simple excessively stream
The circuit parts such as current feed circuit, drive error feedback circuit, fault feedback circuit, on-off circuit, locking signal generative circuit, complete
Integrated protection to accessing grid equipment, has the advantages that components and parts are few, circuit is simple, good stability, safe, reduces
The cost of protection device, its Universal and scalability are conducive to the marketing of the protection device of the present invention.
Description of the drawings
In order that present disclosure is more likely to be clearly understood, the specific embodiment below according to the present invention is simultaneously combined
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is a kind of structured flowchart of protection device for IEC61850 protocol conversion apparatus of the embodiment of the present invention 1；
Fig. 2 is a kind of structured flowchart of protection device for IEC61850 protocol conversion apparatus of the embodiment of the present invention 2；
Fig. 3 is the structured flowchart of an instantiation of the switch controlling signal generative circuit in the embodiment of the present invention 1；
Fig. 4 is the structured flowchart of another instantiation of the switch controlling signal generative circuit in the embodiment of the present invention 1；
Fig. 5 is one of a kind of protection device for IEC61850 protocol conversion apparatus of the embodiment of the present invention 2 concrete
The circuit diagram of example.
In figure, reference is expressed as：10- crosses current feedback circuit, 20- drive error feedback circuits, 30- failures feedback electricity
Road, 40- switch controlling signal generative circuits, 50- locking signal generative circuits, 60- failure indicating circuits, 70- electrical controls letter
Number generative circuit, 401- hand switch control signal generative circuits, 402- first switch control signal synthetic circuits, 403- second
Switch controlling signal synthetic circuit.
Specific embodiment
Fig. 1 shows a kind of structure of protection device for IEC61850 protocol conversion apparatus of the embodiment of the present invention 1
Block diagram, as shown in figure 1, a kind of protection device for IEC61850 protocol conversion apparatus of the present invention, including excessively stream feedback electricity
Road 10, drive error feedback circuit 20, fault feedback circuit 30, switch controlling signal generative circuit 40 and locking signal generate electricity
Road 50.
Current feedback circuit 10 is crossed for receiving A/B/C three-phase over-current signal OCA, OCB, OCC, and according to the OCA, OCB,
OCC carries out synthesis, generates synthesis over-current signal OC and exports to fault feedback circuit 30.Drive error feedback circuit 20 is used to receive
A/B/C three-phase drive rub-out signals ERRA, ERRB, ERRC, and synthesis is carried out according to ERRA, ERRB, the ERRC, generate comprehensive drive
Dynamic rub-out signal ERR is exported to fault feedback circuit 30.
Fault feedback circuit 30 is used for the excess temperature signal OH of over-pressed signal OV, the IGBT for receiving IGBT and excessively stream feedback electricity
The comprehensive drive error signal ERR that the comprehensive over-current signal OC and drive error feedback circuit 20 that road 10 generates is generated, and according to
OV, OH, OC, ERR carry out synthesis, generate resultant fault signal FAULT and export to locking signal generative circuit 50.Above-mentioned IGBT's
Protection circuits of the excess temperature signal OH of over-pressed signal OV and IGBT from the high-power IGBT module accessed in grid equipment, IGBT
Over-pressed signal OV be used to indicate the situation that IGBT has overvoltage that the excess temperature signal OH of IGBT to be used to indicate that IGBT has excess temperature
Situation.
Group switch control signal CONTROL that switch controlling signal generative circuit 40 is used to generate access grid equipment is defeated
Go out to locking signal generative circuit 50.
Locking signal generative circuit 50 is used for the resultant fault signal FAULT and switch for receiving the generation of fault feedback circuit 30
Group switch control signal CONTROL that control signal generative circuit 40 is generated, and according to the resultant fault signal FAULT and comprehensive
Combination switch control signal CONTROL carries out synthesis, generates locking signal LOCK and exports to the microcontroller for accessing grid equipment, with
Control accesses the break-make of grid equipment.
The over-pressed signal of the IGBT that the protection device of the present invention is provided using the protection circuit of existing high-power IGBT module
With the excess temperature signal of IGBT, and three-phase over-current signal and three-phase drive rub-out signal are combined, form comprehensive through circuit synthesis process
Fault-signal is closed, can be used to realize that the three-phase excessively stream of access grid equipment, three-phase drive mistake, IGBT are over-pressed, IGBT excess temperatures
The function of fault alarm, is capable of achieving excision equipment by the group switch control signal that switch controlling signal generative circuit is provided
Function so that access grid equipment can safe and stable operation, so as to ensure the stable operation of correspondent section electrical network.
Fig. 2 shows a kind of structure of protection device for IEC61850 protocol conversion apparatus of the embodiment of the present invention 2
Block diagram, as shown in Fig. 2 the protection device of the present invention also includes failure indicating circuit 60.It is highly preferred that also believing including electrical control
Number generative circuit 70.
Failure indicating circuit 60 is used for the excess temperature signal OH of over-pressed signal OV, the IGBT for receiving IGBT, comprehensive over-current signal
OC and comprehensive drive error signal ERR, and which is converted into the form of fault alarm respectively indicates.The shape of the fault alarm
Formula can be realized using LED, or using buzzer realizing, or the warning of warning function can be realized using other
Device is realizing.Failure indicating circuit 60 can be by with the presence or absence of three-phase excessively stream, three-phase drive mistake, IGBT overvoltages and IGBT excess temperatures
Failure indicated in the form of fault alarm, facilitates user in real time, intuitively can judge with the presence or absence of above failure
Situation, accesses grid equipment with timely excision, and protection accesses the safety of grid equipment and correspondent section electrical network.
Electrical control signal generative circuit 70 is used to receive resultant fault signal FAULT, and is converted into electrical control
Strong electrical control circuit of the signal output to the access grid equipment, to control the break-make for accessing grid equipment.Electric-controlled
Signal generating circuit processed 70 is exported after resultant fault signal FAULT is changed, it can also be used to panel indicate etc. other purposes.
Will be detailed below the concrete structure of above-mentioned switch controlling signal generative circuit 40.As the first concrete reality
Example, as shown in figure 3, switch controlling signal generative circuit 40 includes hand switch control signal generative circuit 401 and first switch
Control signal synthetic circuit 402.Hand switch control signal generative circuit 401 be used for generate hand switch control signal export to
The first switch control signal synthetic circuit 402.One input of first switch control signal synthetic circuit 402 with it is manual
The output end connection of switch controlling signal generative circuit 401, for receiving the generation of hand switch control signal generative circuit 401
Hand switch control signal, another input of first switch control signal synthetic circuit 402 are used to receive electric from accessing
The intelligent switching control signal of the microcontroller of net equipment, first switch control signal synthetic circuit 402 is according to the intelligent switch
Control signal and hand switch control signal carry out synthesis, and generation group switch control signal is exported gives locking signal generative circuit
50。
As second instantiation, as shown in figure 4, switch controlling signal generative circuit 40 except including it is above-mentioned the first
Beyond circuit in instantiation, also including second switch control signal synthetic circuit 403.The comprehensive electricity of second switch control signal
After road 403 is connected on the circuit of the first instantiation, one input and first switch control signal synthetic circuit 402
Output end connect, for receive first switch control signal synthetic circuit 402 generation the first group switch control signal, second
Another input of switch controlling signal synthetic circuit 403 is used to receive from the strong electrical control circuit for accessing grid equipment
Electric switch control signal QD_Switch_Lock, second switch control signal synthetic circuit 403 are controlled according to the electric switch
Signal QD_Switch_Lock and the first group switch control signal carry out synthesis, generate group switch control signal and export to lock
Determine signal generating circuit 50.It will be appreciated by those skilled in the art that the acquisition of group switch control signal is not limited to only by manual
One or several synthesis in switch controlling signal, intelligent switching control signal or electric switch control signal and obtain,
Can be obtained come comprehensive using other switch controlling signals, and an arbitrarily switch of can connecting after the circuit of second instantiation
Control signal synthetic circuit is realizing.
By the switch controlling signal generative circuit 40 of the present invention, the protection device of the present invention realizes automatically and manually two
The mode of kind of excision equipment, in the case of all electic protection failures, it is impossible to when completing automatic excision equipment, can carry out with
The artificial excision equipment of manual mode, it is ensured that access the safety of grid equipment.When automatic excision equipment is realized, using monolithic
The intelligent switching control signal that the microcontrollers such as machine, DSP are provided is come the control mode realized, or is possible with outside forceful electric power control
Come the control mode realized, forward and backward person is conducive to when the protection of the present invention electric switch control signal provided by circuit processed
When device judges to exist the situation of three-phase excessively stream, three-phase drive mistake, IGBT overvoltages, IGBT excess temperatures or fault alarm etc., can
Directly control accesses the break-make of grid equipment immediately, and protection accesses the safety of grid equipment；The former is also helped by intelligent control
Device processed is controlled with the process of programming, is met and is accessed breakdown judge and safety of the grid equipment in various design requirements
Control, it is ensured that access the safe and stable operation of grid equipment.Above-mentioned hand is devised by the excision mode to accessing grid equipment
Dynamic, automatic various ways, increased the possibility of various control, in case can by another kind in the case of a kind of possible failure
Can better assure that access grid equipment being capable of safe and stable operation realizing control.Simultaneously also by devising electric, intelligence
The control mode of energy, is that the protection device of the present invention increased Universal and scalability.
Below by by a kind of protection for IEC61850 protocol conversion apparatus of the embodiment of the present invention 2 shown in Fig. 5
The circuit diagram of one instantiation of device, specifically describes the control of hand switch control signal generative circuit 401, first switch
The circuit diagram of signal integrated circuit 402 and second switch control signal synthetic circuit 403.As shown in figure 5, wherein in dotted line frame 40
Part is switch controlling signal generative circuit 40, is divided into hand switch control signal generative circuit 401 inside dotted line frame 401, empty
It is divided into first switch control signal synthetic circuit 402 inside wire frame 402, inside dotted line frame 403, is divided into second switch control signal
Synthetic circuit 403.
Hand switch control signal generative circuit 401 includes switching S1 and electric capacity C1.Switch S1 includes a moved end 2 and two
Individual static side 1,3, when first position is placed in, moved end 2 is turned on the first static side 1, when the second place is placed in, moved end 2 and second
Static side 3 is turned on；First static side 1 is connected with power end+5V, and the second static side 3 is connected with earth terminal GND, moved end 2 and first switch control
The input connection of signal integrated circuit processed 402；Electric capacity C1 is connected across between first static side 1 and the second static side 3 of switch S1.
First switch control signal synthetic circuit 402 is realized using gate circuit, as an instantiation, such as Fig. 5 institutes
Show, which adopts OR circuit to realize, including the first OR gate chip U2B, input 4 and the switch S1 of the first OR gate chip U2B
Output end 2 connect, its input 5 is used to receive intelligent switching control signal, and the first OR gate chip U2B is by hand switch control
The hand switch control signal of the output of signal generating circuit 401 is asked or is exported with the intelligent switching control signal, its output end 6 and
The input connection of second switch control signal synthetic circuit 403.
Second switch control signal synthetic circuit 403 is realized using gate circuit, as an instantiation, such as Fig. 5 institutes
Show, which adopts OR circuit to realize, including the second OR gate chip U2C, the input 9 and first of the second OR gate chip U2C or
The output end 6 of door chip U2B connects, and its input 10 is used to receive electric switch control signal QD_Switch_Lock, and second
Signal that first OR gate chip U2B is exported by OR gate chip U2C ask with electric switch control signal QD_Switch_Lock or
Output, its output end 8 are connected with locking signal generative circuit 50, output integrated switch controlling signal CONTROL.Wherein, manually
Switch controlling signal, intelligent switching control signal and electric switch control signal are that low level is normal operation signal, high electricity
Put down as fault-signal.It will be appreciated by those skilled in the art that above-mentioned first switch control signal synthetic circuit 402 and second switch
Control signal synthetic circuit 403 is not limited to employing OR circuit as shown in Figure 5 to realize, it would however also be possible to employ for example also include with
The combination gate circuit of one or more in other gate circuits such as door, not gate and XOR gate is realizing.
Will be detailed below a kind of protection device for IEC61850 protocol conversion apparatus of the embodiment of the present invention 2
Cross current feedback circuit 10, drive error feedback circuit 20, the fault feedback circuit 30, locking signal of one instantiation generates electricity
The circuit diagram on road 50, failure indicating circuit 60 and electrical control signal generative circuit 70.As shown in figure 5,10 interior part of dotted line frame
To cross current feedback circuit 10, inside dotted line frame 20, it is divided into drive error feedback circuit 20, inside dotted line frame 30, is divided into failure feedback
Circuit 30, is divided into locking signal generative circuit 50, is divided into failure indicating circuit 60, dotted line inside dotted line frame 60 inside dotted line frame 50
It is divided into electrical control signal generative circuit 70 inside frame 70.
Crossing current feedback circuit 10, drive error feedback circuit 20 and fault feedback circuit 30 can be using gate circuit come real
It is existing, as an instantiation, as shown in figure 5, which is realized using with gate circuit, cross current feedback circuit 10 include first with
Door chip U1A, A/B/C three-phase over-current signal OCA, OCB, OCC are asked with synthesis into comprehensive over-current signal with door chip U1A by first
OC.Drive error feedback circuit 20 includes second with door chip U1B, A/B/C three-phase drive rub-out signals ERRA, ERRB, ERRC
Asked with synthesis into comprehensive drive error signal ERR with door chip U1B by second.Fault feedback circuit 30 includes the 3rd with door chip
U3A, comprehensive over-current signal OC, the excess temperature signal OH of the over-pressed signal OV and IGBT of comprehensive drive error signal ERR, IGBT are by the
Three are asked with synthesis into resultant fault signal FAULT with door chip U3A, are exported to locking signal generative circuit 50, wherein, A/B/C
The excess temperature signal of three-phase over-current signal, A/B/C three-phase drive rub-out signals, the over-pressed signal of IGBT and IGBT is that high level is
Normal operation signal, low level are fault-signal.It will be appreciated by those skilled in the art that above-mentioned cross current feedback circuit 10, drive
Error feedback circuit 20 and fault feedback circuit 30 are not limited to employing as shown in Figure 5 and are realized with gate circuit, it would however also be possible to employ
Realize for example also including the combination gate circuit of one or more in other gate circuits such as OR gate, not gate and XOR gate.
Locking signal generative circuit 50 includes that the 3rd OR gate chip U2A, first resistor R1, second resistance R2, first light
Diode (LED) 1 and the first triode Q1, the first input end 1 of the 3rd OR gate chip U2A and the output end of fault feedback circuit 30
Connection, its second input 2 is connected with the output end of switch controlling signal generative circuit 40, its output end 3 and first resistor R1
One end connection；The other end of first resistor R1 is connected with the base stage 1 of the first triode Q1；The emitter stage 2 of the first triode Q1
It is connected with earth terminal GND, its colelctor electrode 3 is connected with one end of the first LED 1；First LED 1
The other end is connected with one end of second resistance R2；The other end of second resistance R2 is connected with power end+5V；First triode Q1's
Output end of the colelctor electrode 3 for locking signal LOCK.3rd OR gate chip U2A is by resultant fault signal FAULT and group switch control
Signal CONTROL processed is asked or is exported and is supplied to the first triode Q1, and formation locking signal LOCK is exported and set to access electrical network afterwards
Standby microcontroller, to control to access the power on/off of grid equipment, locking signal LOCK is low level fault, and high level is normal.
First LED 1 indicates that for locking signal lamp goes out during normal operation, and lamp is bright during failure.Those skilled in the art should
Work as understanding, above-mentioned locking signal generative circuit 50 is not limited to circuit diagram as shown in Figure 5 to realize, it would however also be possible to employ other circuits
To realize producing the function of control signal, to achieve a butt joint into the control of grid equipment break-make.
Failure indicating circuit 60 includes three-phase over current fault indicating circuit, three-phase drive fault indicating circuit, IGBT
Over-voltage fault indicating circuit and IGBT excess temperature failure indicating circuits.Three-phase over current fault indicating circuit includes the second light emitting diode
LED2 and 3rd resistor R3, one end of the second LED 2 are connected with the output end for crossing current feedback circuit 10, the other end
It is connected with one end of 3rd resistor R3；The other end of 3rd resistor R3 is connected with power end+5V.Three-phase drive fault is indicated
Circuit includes the 3rd LED 3 and the 4th resistance R4, and one end and the drive error of the 3rd LED 3 are fed back
The output end connection of circuit 20, the other end are connected with one end of the 4th resistance R4；The other end of the 4th resistance R4 and power end+5V
Connection.IGBT over-voltage fault indicating circuits include the 4th LED 4 and the 5th resistance R5, the 4th light emitting diode
Over-pressed signal of one end input of LED4 from the IGBT of the protection circuit of the high-power IGBT module accessed in grid equipment, separately
One end is connected with one end of the 5th resistance R5；The other end of the 5th resistance R5 is connected with power end+5V.IGBT excess temperature indicating fault
Circuit includes the 5th LED 5 and the 6th resistance R6, and one end input of the 5th LED 5 is electric from accessing
One end of the IGBT excess temperature signals of the protection circuit of the high-power IGBT module in net equipment, the other end and the 6th resistance R6 connects
Connect；The other end of the 6th resistance R6 is connected with power end+5V.It will be appreciated by those skilled in the art that above-mentioned failure indicating circuit
60 are not limited to circuit diagram as shown in Figure 5 to realize, it would however also be possible to employ other circuits are realizing the function of indicating fault.
Electrical control signal generative circuit 70 includes the second triode Q2 and the 7th resistance R7；One end of 7th resistance R7 with
The output end connection of fault feedback circuit 30, its other end are connected with the base stage 1 of the second triode Q2；Second triode Q2's sends out
Emitter-base bandgap grading 2 is connected with earth terminal GND, output end of its colelctor electrode 3 for electrical control signal QD_Fault.Electrical control signal is generated
Circuit 70 is exported after resultant fault signal FAULT is changed to the strong electrical control circuit for accessing grid equipment, also may be used
For other purposes such as panel instructions.It will be appreciated by those skilled in the art that above-mentioned electrical control signal generative circuit 70 is not limited
Realize in the circuit using triode as shown in Figure 5, it would however also be possible to employ of other circuits also including FET etc.
Or multiple combinational circuits is realizing.
In sum, circuit simple and stable of the protection device of the invention per part, be easily achieved, it is anti-with simple excessively stream
Current feed circuit, drive error feedback circuit, fault feedback circuit, on-off circuit, locking signal generative circuit, failure indicating circuit,
The circuit parts such as electrical control signal generative circuit, complete the integrated protection to accessing grid equipment, few, electric with components and parts
Road is simple, good stability, it is safe the advantages of, reduce the cost of protection device, its Universal and scalability is conducive to
The marketing of the protection device of the present invention.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And thus it is extended obvious change or
Among changing still in the protection domain of the invention.
Claims (7)
1. a kind of protection device for IEC61850 protocol conversion apparatus, it is characterised in that include：
Current feedback circuit is crossed, for receiving three-phase over-current signal, and comprehensive over-current signal is generated according to the three-phase over-current signal；
Drive error feedback circuit, for receiving three-phase drive rub-out signal, and generates according to the three-phase drive rub-out signal
Comprehensive drive error signal；
Fault feedback circuit, for receiving from the over-pressed signal of high-power IGBT, the IGBT accessed in grid equipment
Excess temperature signal, the comprehensive over-current signal and the comprehensive drive error signal, and it is the over-pressed signal according to the IGBT, described
The excess temperature signal of IGBT, the comprehensive over-current signal and the comprehensive drive error signal generation resultant fault signal；
Switch controlling signal generative circuit, for generating the group switch control signal for accessing grid equipment；
Locking signal generative circuit, for receiving the resultant fault signal and the group switch control signal, and according to institute
State resultant fault signal and the group switch control signal generates locking signal and exports to the access grid equipment, to control
The power on/off for accessing grid equipment；
The switch controlling signal generative circuit includes：
Hand switch control signal generative circuit, for generating hand switch control signal；
First switch control signal synthetic circuit, is OR circuit, an input of the OR circuit be used to receiving from
The intelligent switching control signal of the microcontroller for accessing grid equipment, another input are used to receive the hand switch
The intelligent switching control signal is asked with the hand switch control signal or exports described by control signal, the OR circuit
Group switch control signal.
2. protection device according to claim 1, it is characterised in that the hand switch control signal generative circuit includes
Switch and electric capacity；The switch includes a moved end and two static sides, when first position is placed in, the moved end and the first static side
Conducting, when the second place is placed in, the moved end is turned on the second static side；First static side is connected with power end, and described
Two static sides are connected with earth terminal, and the moved end is connected with the input of the first switch control signal synthetic circuit；The electricity
Appearance is connected across between the first static side of the switch and the second static side.
3. protection device according to claim 1, it is characterised in that described to cross current feedback circuit, the drive error anti-
Current feed circuit and the fault feedback circuit are realized using gate circuit.
4. protection device according to claim 3, it is characterised in that the gate circuit is OR gate and door, not gate and XOR
The circuit of the one or more combination in door.
5. protection device according to claim 1, it is characterised in that the locking signal generative circuit includes the 3rd OR gate
Chip, first resistor, second resistance, the first light emitting diode and the first triode, the first input of the 3rd OR gate chip
End is connected with the output end of the fault feedback circuit, the output of its second input and the switch controlling signal generative circuit
End connection, its output end are connected with one end of the first resistor；The other end of the first resistor and first triode
Base stage connection；The emitter stage of first triode is connected with earth terminal, its colelctor electrode and first light emitting diode
One end connects；The other end of first light emitting diode is connected with one end of the second resistance；The second resistance it is another
One end is connected with power end；The output end of the extremely described locking signal of current collection of first triode.
6. protection device according to claim 1, it is characterised in that the protection device also includes failure indicating circuit,
The failure indicating circuit includes three-phase over current fault indicating circuit, three-phase drive fault indicating circuit, IGBT overvoltage events
Barrier indicating circuit and IGBT excess temperature failure indicating circuits；
The three-phase over current fault indicating circuit includes the second light emitting diode and 3rd resistor, second light emitting diode
One end is connected with the output end for crossing current feedback circuit, and the other end is connected with one end of the 3rd resistor；Described 3rd is electric
The other end of resistance is connected with power end；
The three-phase drive fault indicating circuit includes the 3rd light emitting diode and the 4th resistance, the 3rd light-emitting diodes
One end of pipe is connected with the output end of the drive error feedback circuit, and the other end is connected with one end of the 4th resistance；Institute
The other end for stating the 4th resistance is connected with power end；
The IGBT over-voltage faults indicating circuit includes the 4th light emitting diode and the 5th resistance, the 4th light emitting diode
One end is input into the over-pressed signal of the IGBT, and the other end is connected with one end of the 5th resistance；5th resistance it is another
End is connected with power end；
The IGBT excess temperatures failure indicating circuit includes the 5th light emitting diode and the 6th resistance, the 5th light emitting diode
One end is input into the excess temperature signal of the IGBT, and the other end is connected with one end of the 6th resistance；6th resistance it is another
End is connected with power end.
7. the protection device according to any one of claim 1-6, it is characterised in that the protection device also includes electric
Control signal generative circuit；
The electrical control signal generative circuit includes the second triode and the 7th resistance；One end of 7th resistance with it is described
The output end connection of fault feedback circuit, its other end are connected with the base stage of second triode；Second triode
Emitter stage is connected with earth terminal, the output end of the extremely described electrical control signal of its current collection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510689886.XA CN105337409B (en) | 2015-03-26 | 2015-03-26 | For the protection device of IEC61850 protocol conversion apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137239.8A CN104810806B (en) | 2015-03-26 | 2015-03-26 | For accessing the protective device of grid equipment |
| CN201510689886.XA CN105337409B (en) | 2015-03-26 | 2015-03-26 | For the protection device of IEC61850 protocol conversion apparatus |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510137239.8A Division CN104810806B (en) | 2015-03-26 | 2015-03-26 | For accessing the protective device of grid equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105337409A CN105337409A (en) | 2016-02-17 |
| CN105337409B true CN105337409B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510137239.8A Active CN104810806B (en) | 2015-03-26 | 2015-03-26 | For accessing the protective device of grid equipment |
| CN201510689886.XA Active CN105337409B (en) | 2015-03-26 | 2015-03-26 | For the protection device of IEC61850 protocol conversion apparatus |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510137239.8A Active CN104810806B (en) | 2015-03-26 | 2015-03-26 | For accessing the protective device of grid equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104810806B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810806B (en) * | 2015-03-26 | 2016-06-08 | 国网山东省电力公司青岛供电公司 | For accessing the protective device of grid equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6097582A (en) * | 1999-02-12 | 2000-08-01 | Wisconsin Alumni Research Foundation | Short circuit protection of IGBTs and other power switching devices |
| JP2001103753A (en) * | 1999-09-29 | 2001-04-13 | Tdk Corp | Switching power supply unit |
| JP3791400B2 (en) * | 2001-11-22 | 2006-06-28 | 三菱電機株式会社 | Semiconductor device |
| CN203660869U (en) * | 2013-11-13 | 2014-06-18 | 国家电网公司 | High-power IGBT (insulated gate bipolar transistor) redundant drive protection circuit |
| CN204391694U (en) * | 2014-11-26 | 2015-06-10 | 国家电网公司 | A kind of general protective circuit for Active Power Filter-APF |
| CN104810806B (en) * | 2015-03-26 | 2016-06-08 | 国网山东省电力公司青岛供电公司 | For accessing the protective device of grid equipment |
-
2015
- 2015-03-26 CN CN201510137239.8A patent/CN104810806B/en active Active
- 2015-03-26 CN CN201510689886.XA patent/CN105337409B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104810806B (en) | 2016-06-08 |
| CN104810806A (en) | 2015-07-29 |
| CN105337409A (en) | 2016-02-17 |
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