CN107846074A - The anti-misoperation locking control system and method for a kind of transformer station direct current system - Google Patents
The anti-misoperation locking control system and method for a kind of transformer station direct current system Download PDFInfo
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- CN107846074A CN107846074A CN201711227719.9A CN201711227719A CN107846074A CN 107846074 A CN107846074 A CN 107846074A CN 201711227719 A CN201711227719 A CN 201711227719A CN 107846074 A CN107846074 A CN 107846074A
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- Prior art keywords
- contactor
- charging module
- batteries
- direct current
- locking
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention discloses the anti-misoperation locking control system and method for a kind of transformer station direct current system, anti-misoperation locking control system, each contactor positive supply cable lower has concatenated current detecting chip, the chip is fixed on cable, chip gathers the current signal in each contactor loop in real time, the current signal is connected by cable with external contactor control device, and microprocessor is passed to by modulus conversion chip, by controller loop anti-misoperation locking logic is filled according to two electricity three, realize the control to each D.C. contactor, realize the manual control automatically controlled instead of in former technical scheme, avoid accident caused by various maloperations.
Description
Technical field
The invention belongs to substation equipment control field, and in particular to a kind of anti-misoperation locking control of transformer station direct current system
System and method.
Background technology
330kV and above transformer station direct current system are general to fill configuration using two electricity three, including two group storage batteries,
Three groups of charging modules, the two combines reliably works for the offer such as switch, ups power, important communication device in transformer station
Power supply.At present, the electricity three of transformer station direct current system two fills batteries in loop, charging module and dc bus and uses disconnecting switch
The mode of connection, without installing machinery or electric interlocking installation additional between these disconnecting switch, it may appear that following phenomenon：
1) there is bookmark name mistake in disconnecting link label accidental removal, renewal label process, and operation maintenance personnel surprisingly pulls open one group
Battery disconnecting switch, the group storage battery is caused to depart from dc bus for a long time.
2) personnel's direct current specialty is weak, understanding deficiency is acted on part disconnecting link, in a group storage battery group fault isolating switch
In the case of, if another group storage battery group fault isolating switch, two group storage battery groups will be caused while depart from dc bus.
3) any group of DC charging module failure, but standby charging module does not automatically engage, and causes remaining one group of charging
Module overload works, and influences charging module service life.
4) Substation Station with step-down pressure-off mouth without delay, after being lost at station with AC power, if because two group storage batteries every
Leave pass accidentally to disconnect, will appear from AC and DC power supply missing, relay fail, the consequence that failure is bypassed the immediate leadership.
Wherein, the 4th kind of phenomenon is most serious, also once the accident thus triggered occurs in certain Utilities Electric Co..
Anti mis-closedown function is not provided with for batteries, charging module, causes the above phenomenon occurred, domestic relevant people
Member proposes the solution for during straight-flow system is overhauled, increasing stand-by power supply, but the program is limited only to be configured to single electricity
The 110kV and following voltage class transformer station direct current system singly filled, can not be useful in two electricity three and fill in the straight-flow system of configuration.
Therefore, it is necessary to propose that a kind of band prevents two electricity three of maloperation from filling blocking method.
The content of the invention
For overcoming the shortcomings of the prior art, the present invention provides a kind of anti-misoperation locking control of transformer station direct current system
System and method, fill each loop state amount detection using two electricity three, anti-misoperation locking logic judgment, D.C. contactor automatically control
Closedown mode, realize two group storage battery groups, three groups of charging modules and two sections of dc bus intelligent links, ensure that straight-flow system is stable
Operation.
To reach above-mentioned purpose, the present invention adopts the following technical scheme that：
A kind of anti-misoperation locking control system of transformer station direct current system, transformer station direct current system be by the first batteries,
Two electric three charging systems that second batteries, charging module one, charging module two and charging module three form；
First batteries are connected by 1 section of bus of the first batteries contactor and direct current, and the second batteries pass through
1 section of bus of second batteries contactor and direct current is connected；Charging module one passes through the contactor of charging module one and 1 section of mother of direct current
Line is connected, and 2 sections of buses of the contactor of charging module two-way overcharge module two and direct current are connected, charging module threeway overcharge module
Three total disconnecting switch are connected with No. 1 contactor of charging module three and No. 2 contactor of charging module three respectively, and respectively with direct current 1
2 sections of section bus, direct current bus connections, 2 sections of buses of 1 section of bus of direct current and direct current get in touch with disconnecting switch phase by direct current double-bus
Even；
Microprocessor is connected by modulus conversion chip with 6 current detecting chips, 6 current detecting chip current inputs
Passage connects with the contactor of charging module one, the contactor of charging module two, the first batteries contactor, the second batteries respectively
Tentaculum, No. 1 contactor of charging module three, No. 2 contactor positive supply cable concatenation of charging module three；
Microprocessor also respectively by 6 optocoupler drive modules and the contactor of charging module one, the contactor of charging module two,
First batteries contactor, the second batteries contactor, No. 1 contactor of charging module three, No. 2 contactor of charging module three
Coil connection, the mutual short circuit of 6 contactor coil other ends.
Further, current detecting chip uses Hall-type current detecting chip.
Further, 6 road voltage analog signals of described Hall-type current detecting chip output pass through modulus conversion chip
12 position digital signals are converted to, the signal is received by microprocessor.
Further, microprocessor, modulus conversion chip and current detecting chip operating voltage use DC5V, optocoupler driving mould
The operating voltage of block uses DC24V.
A kind of anti-misoperation locking control method of transformer station direct current system, charging module one is gathered by current detecting chip and connect
Tentaculum, the contactor of charging module two, the first batteries contactor, the second batteries contactor, the contact of the tunnel of charging module 31
Device, No. 2 contactor electric current of charging module three, when gathering each loop current signals, microprocessor judges every group of D.C. contactor
After logic state 0 or 1, microprocessor proceeds by logic blocking processing, and latching logic has three kinds, and respectively batteries are closed
Lock, charging module locking and the dual locking of battery charging module；
Batteries locking, dc bus can not be departed from simultaneously by being defined as two group storage battery groups, i.e. logic state can not be same
When be 0；
Charging module is interlocked, and dc bus can not be departed from simultaneously by being defined as two groups of charging modules, i.e. logic state can not be same
When be 0；Any group of disengaging bus of two groups of charging modules, the 3rd group of charging module automatically engage, i.e., when charging module one departs from directly
Bus is flowed, then No. 1 contactor input of charging module three；When charging module two departs from dc bus, then the tunnel of charging module 32 contacts
Device is put into；
The dual locking of battery charging module, direct current mother can not be departed from simultaneously by being defined as batteries and charging module
Line.
Further, logic blocking processing uses C language programming realization, including a main program, three subprograms；
The contactor of main program uninterrupted sampling charging module one, the contactor of charging module two, the first batteries contactor,
Second batteries contactor, No. 1 contactor of charging module three, No. 2 contactor current data of charging module three；
When judging that the first batteries contactor or any current logic amount of the second batteries contactor are 0, main journey
Sequence jumps to middle battery locking subprogram, and the first batteries contactor and the second batteries contactor are determined by the program
It can not simultaneously switch off, realize that battery locking judges and be back to main program to be circulated next time；
When main program judges that the contactor of charging module one or any current logic amount of the contactor of charging module two are 0, stand
Charging module locking subprogram is jumped to, determines that the contactor of charging module one and the contactor of charging module two can not by the program
Simultaneously switch off, while determine that No. 1 contactor of charging module three or No. 2 contactor of charging module three accordingly put into signal, realization is filled
Electric module locking judges and is back to main program to be circulated next time；
When main program judges the contactor of charging module one, the contactor of charging module two, the first batteries contactor,
In two batteries contactors, the first batteries contactor and the contactor current logic amount of charging module one are simultaneously 0, main journey
Sequence jumps to the dual locking subprogram of battery charging module, and the contactor of charging module two and the second battery are determined by the program
Group contactor can not disconnect, and determine that No. 1 contactor of charging module three and No. 2 contactor of charging module three put into signal simultaneously, real
The dual locking of existing battery charging module.
Two electricity that loop state amount detection that the present invention uses, anti-misoperation locking logic judgment, D.C. contactor automatically control
Three fill loop closedown mode, disconnecting switch instead of D.C. contactor, realize and automatically control instead of in former technical scheme
Manual control, avoid accident caused by various maloperations.
Compared with prior art, the present invention also has the characteristics that：
(1) disconnecting switch is realized the people's industry control automatically controlled instead of in former technical scheme instead of D.C. contactor
System, avoids accident caused by various maloperations.
(2) charging module locking, batteries locking and charging module and the dual latching logic of batteries are being met
Under the premise of, can flexibly control the D.C. contactor in any loop, be advantageous to lifted straight-flow system equipment daily O＆M and
Service work efficiency.
(3) when the situation for any group of charging module failure occur, standby charging module can fully be sent out with fast automatic input
The effect of standby charging module is waved.
Brief description of the drawings
Fig. 1 is transformer station direct current system figure
Fig. 2 is D.C. contactor control device circuit diagram
In figure：The contactor of 1- charging modules one；The contactor of 2- charging modules two；3- the first batteries contactors；4-
Two batteries contactors；No. 1 contactor of 5- charging modules three；No. 2 contactor of 6- charging modules three；7- charging modules three always every
Leave pass；The first batteries of 8- 8；The second batteries of 9- 9；10- charging modules one；11- charging modules two；12- charging moulds
Block three；1 section of bus of 13- direct currents；2 sections of buses of 14- direct currents；15- direct currents double-bus gets in touch with disconnecting switch；20-89C52RC monolithics
Machine；21- Hall-type current detection modules；22-TLC2543 modulus conversion chips；23- optocoupler drive modules.
Embodiment
The present invention is described in further detail with reference to embodiment：
Referring to Fig. 1, transformer station direct current system figure of the invention, including the first batteries 8, the second batteries 9 and fill
Two electricity three that electric module 1, charging module 2 11, charging module 3 12 form fill configuration, wherein, the first batteries 8 pass through
1 section of bus 13 of first batteries contactor 3 and direct current is connected, the second batteries 9 by the second batteries contactor 4 with
1 section of bus 13 of direct current connects；Charging module 1 is connected by 1 section of bus 13 of the contactor 1 of charging module one and direct current, and charge mould
Block 2 11 is connected by 2 sections of buses 14 of the contactor 2 of charging module two and direct current, charging module 3 12 by charging module three always every
Pass is left 7 to be connected with No. 1 contactor 5 of charging module three and No. 2 contactor 6 of charging module three respectively, and respectively with 1 section of mother of direct current
2 sections of line 13, direct current buses 14 connect；2 sections of buses 14 of 1 section of bus 13 of direct current and direct current get in touch with disconnecting switch by direct current double-bus
It is connected；
Referring to Fig. 2, D.C. contactor controller circuitry figure of the invention, the figure be using 89C52RC single-chip microcomputers as core,
89C52RC single-chip microcomputers are connected by pin P2.0 with TLC2543 modulus conversion chip pins DOUT, TLC2543 analog-to-digital conversion cores
Piece pin A1-A6 is connected with 6 Hall-type current detecting chip pin VOUT1-VOUT6 respectively, Hall-type current detecting chip
Electric current input channel the contactor 1 of charging module one in each loop, the contactor 2, first of charging module two are filled with two electricity three respectively
Batteries contactor 3, the second batteries contactor 4, No. 1 contactor 5 of charging module three, No. 2 contactor 6 of charging module three
Lower end positive supply cable concatenation.
89C52RC single-chip microcomputer pins P1.0-P1.5 with 6 buttons, can control the contactor of charging module one in real time respectively
1st, the contactor 2 of charging module two, the first batteries contactor 3, the second batteries contactor 4, the contact of the tunnel of charging module 31
The input of device 5, No. 2 contactor 6 of charging module three.89C52RC single-chip microcomputer pins P0.0-P0.5 connects with optocoupler drive module respectively
Mouth IN1-IN6 is connected, and optocoupler drive module interface OUT1-OUT6 contacts with the contactor 1 of charging module one, charging module two respectively
Device 2, the first batteries contactor 3, the second batteries contactor 4, No. 1 contactor 5 of charging module three, charging module 32
The coil connection of road contactor 6, the mutual short circuit of 6 contactor coil other ends.
The operating voltage of 89C52RC single-chip microcomputers, TLC2543 modulus conversion chips and Hall-type current detecting chip is
DC5V, the operating voltage of optocoupler drive module is DC24V.
The anti-misoperation locking control system and method for a kind of transformer station direct current system of the present invention, when in use：
(1) during straight-flow system normal operation, its two electricity three fills loop works state and is：First batteries contactor 3,
Two batteries contactors 4 control two group storage battery group charging operations.The total disconnecting switch 7 of charging module three closes, charging module
Three No. 1 contactors 5, No. 2 contactor 6 of charging module three are holding state, such as the disappearance of the power supply of charging module one, contactor charging mould
No. 1 contactor 5 of block three automatically engages；Such as the disappearance of the power supply of charging module two, No. 2 contactor 6 of charging module three automatically engages.Charging
The contactor 1 of module one, the contactor 2 of charging module two control two groups of charging module charging operations.
(2) DC system fault processing or during single Circuit Retrofit (single battery or single charging module loop), fills
The electric contactor 1 of module one, the contactor 2 of charging module two, the first batteries contactor 3, the second batteries contactor 4, fill
Electric No. 1 contactor 5 of module three, the on off operating mode of No. 2 contactor 6 of charging module three are controlled respectively by 6 buttons outside controller,
But need to follow corresponding latching logic.First batteries contactor 3, the second batteries contactor 4 can only have a quilt
Disconnect, it then follows battery latching logic；The contactor 1 of charging module one, the contactor 2 of charging module two can only have one to be disconnected,
Charging module latching logic is followed, No. 1 contactor 5 of charging module three and No. 2 contactor 6 of charging module three need phase according to scene
It should put into.Troubleshooting or single Circuit Retrofit, while need to follow the dual latching logic of battery charging module.
(3) straight-flow system whole loop is transformed (including batteries and charging module).Under extreme case, work as power transformation
When streaming system whole dismounting of standing erectly is changed, the contactor 1 of charging module one, the contactor 2 of charging module two, the first batteries
Contactor 3, the second batteries contactor 4, No. 1 contactor 5 of charging module three, No. 2 contactor 6 of charging module three are not being carried out
Locking, can all it remove.But now need to introduce flows outside formula dc source to protection equipment, ups power in Substation Station
It is powered with important communication device, to ensure that full station equipment still can be with normal work.
The Interlocking Methods of straight-flow system relate to straight-flow system normal operation, troubleshooting, single Circuit Retrofit, complete
The aspect content of portion's Circuit Retrofit etc. four, can meet the basic demand of the safe and reliable stable operation of straight-flow system.
The present invention replaces with existing disconnecting switch the D.C. contactor that can be controlled in real time, 6 D.C. contactor controls
Power supply processed is DC24V.
Further, Hall-type current detecting chip is serially connected with each D.C. contactor normally opened contact bottom 5cm cables,
The chip operation power supply is 5V, needs 6 current detecting chips altogether, and the voltage analog signal of each chip output is drawn by cable
Go out.
Generally, transformer station direct current system rated operational current is about that 17A (herein means conventional substation, intelligence becomes
Electric rated operational current is less than the numerical value), charging module one and charging module two participate in sharing of load, and charging module three is standby
State, two group storage battery groups are in floating charge state, electric current 0.01-0.05A, so, charging module one and charging module two are average
Electric current is 8.5A.For two group storage battery groups in the case where filling state, electric current is less than two groups of charging module share currents.
So judging that the electricity three of straight-flow system two fills whether each loop D.C. contactor puts into, only it need to judge that loop current is
It is no to be more than 0.05A, if being more than 0.05A, that is, prove that the loop is put into.
Further, the Hall-type current detecting chip can detect 0-30A scope, export 0-5V electricity in proportion
Analog signal is pressed, therefore, can meet to detect needs.
Further, 6 road voltage analog signals of described Hall-type current detecting chip output are by external dc contactor
Controller gathers, and carries out the data signal that analog-to-digital conversion is 12 by chip TLC2543, and the signal is by 89C52RC monolithics
Machine receives.
Due to 212=4096, so(value 7).
After single-chip microcomputer receives 6 railway digital signals, handled, when judging that data are more than 7 (binary systems 0111), i.e.,
It can determine whether the loop D.C. contactor input.
Further, single-chip microcomputer with upper type by judging the contactor 1 of charging module one, the contactor 2 of charging module two,
One batteries contactor 3, second the first batteries of batteries contactor contactor 3, No. 1 contactor 5 of charging module three,
The input state of charging module three No. 2 contactor, 6 grade, 6 D.C. contactors, put into as 1, do not put into as 0.
Further, after gathering each loop current signals, and judge every group of D.C. contactor logic state 0 or 1, monolithic
Machine proceeds by logic blocking processing.Latching logic has three kinds, respectively batteries locking, charging module locking and battery
The group dual locking of charging module.
Batteries locking, dc bus can not be departed from simultaneously by being defined as two group storage battery groups, i.e. logic state can not be same
When be 0.Functional interpretation is：When artificially disconnecting a group storage battery or the failure of the first batteries of D.C. contactor contactor 3, through knowing
Locking after not, another the second batteries of group storage battery D.C. contactor contactor 4 will not be disconnected.
Charging module is interlocked, and dc bus can not be departed from simultaneously by being defined as two groups of charging modules, i.e. logic state can not be same
When be 0.Functional interpretation is：When artificially disconnecting one group of charging module power supply or the failure of one contactor of charging module 1, join after identified
Lock, another group of contactor 2 of charging module D.C. contactor charging module two will not be disconnected；One group of charging module is disconnected when artificial
Power supply or the failure of two contactor of D.C. contactor charging module 2, identified rear locking, another group of contactor 1 of charging module one is not
It can be disconnected；
The functional interpretation of charging module three is：Any group of disengaging bus of two groups of charging modules, the 3rd group of charging module are automatic
(when charging module one departs from dc bus, then No. 1 contactor of charging module three is put into input；When charging module two departs from direct current
Bus, then No. 2 contactor input of charging module three).
The dual locking of battery charging module, direct current mother can not be departed from simultaneously by being defined as batteries and charging module
Line.Functional interpretation is：When artificially the disconnection contactor 1 of charging module one and the contactor 2 of charging module two or charging module one contact
Device 1 and the simultaneous faults of two contactor of charging module 2, identified rear locking, the batteries of charging module D.C. contactor first connect
The batteries contactor 4 of tentaculum 3 and second will not be disconnected；When artificially the first batteries contactor 3 of disconnection and the second electric power storage
Pond group contactor 4 or the first batteries contactor 3 and the simultaneous faults of the second batteries contactor 4, identified rear locking, fill
The electric contactor 1 of module one and charging module two contactor 2 will not be disconnected.
Further, single-chip microcomputer gathers the contactor 1 of charging module one, the contactor 2 of charging module two, the first batteries in real time
Contactor 3, second the first batteries of batteries contactor contactor 3, No. 1 contactor 5 of charging module three, charging module three
6 loop logic states such as No. 2 contactors, and carry out three kinds of described latching logics and judge, and make respective acknowledgement.
Further, after single-chip microcomputer makes any D.C. contactor input answer signal, the signal drives mould by optocoupler
Block, optocoupler drive module control the coil magnetization of D.C. contactor, contactor action, its normally open contact closure, the loop connect
It is logical.
Write in addition, program used in the present invention carries out modularization according to three kinds of closedown modes, be specially：
Described battery locking, charging module locking and the dual locking of battery charging module, programmed using C language real
It is existing, including a main program, three subprograms.The contactor 1 of main program uninterrupted sampling charging module one, charging module two contact
Device 2, the first batteries contactor 3, the second batteries contactor 4, No. 1 contactor 5 of charging module three, charging module 32
The D.C. contactor installation place current data of road contactor 6, when judging that the first batteries contactor 3 or the second batteries connect
Any current logic amount in the D.C. contactor installation place of tentaculum 4 is 0, and main program jumps to middle battery locking subprogram, by the journey
Sequence determines that the first batteries contactor 3 and the second batteries contactor 4 can not simultaneously switch off, and realizes that battery locking judges
And it is back to main program and is circulated next time；When main program judges that the contactor 1 of charging module one or charging module two contact
Any current logic amount in the D.C. contactor installation place of device 2 is 0, jumps to charging module locking subprogram immediately, is determined by the program
Determining the contactor 1 of charging module one and the contactor 2 of charging module two can not simultaneously switch off, while determine that the tunnel of charging module 31 contacts
Device 5 or No. 2 contactor 6 of charging module three accordingly put into signal, realize that charging module locking judges and is back to main program progress
Circulate next time；When main program judges the contactor 1 of charging module one, the contactor 2 of charging module two, the contact of the first batteries
In device 3, the second batteries contactor 4, the first batteries contactor 3 and the D.C. contactor of one contactor of charging module 1 peace
Current logic amount is simultaneously 0 at dress, and main program jumps to the dual locking subprogram of battery charging module, determines to fill by the program
The electric contactor 2 of module two and the second batteries contactor 4 can not disconnect, and determine No. 1 contactor 5 of charging module three and charging mould
No. 2 contactor 6 of block three puts into signal simultaneously, realizes the dual locking of battery charging module.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The embodiment of the present invention is only limitted to this, for general technical staff of the technical field of the invention, is not taking off
On the premise of from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention by institute
Claims of submission determine scope of patent protection.
Claims (6)
- A kind of 1. anti-misoperation locking control system of transformer station direct current system, it is characterised in that：Transformer station direct current system is by first Batteries (8), the second batteries (9), charging module one (10), charging module two (11) and charging module three (12) composition Two electric three charging systems；First batteries (8) are connected by 1 section of bus (13) of the first batteries contactor (3) and direct current, the second battery Group (9) is connected by 1 section of bus (13) of the second batteries contactor (4) and direct current；Charging module one (10) passes through the mould that charges 1 section of bus (13) of the contactor of block one (1) and direct current is connected, and charging module two (11) is by the contactor of charging module two (2) and directly Stream 2 sections of buses (14) connection, charging module three (12) by the total disconnecting switch (7) of charging module three respectively with charging module 31 Road contactor (5) and No. 2 contactor (6) of charging module three connection, and respectively with 2 sections of 1 section of bus (13) of direct current, direct current buses (14) connect, 2 sections of buses (14) of 1 section of bus (13) of direct current and direct current are got in touch with disconnecting switch (15) by direct current double-bus and are connected；Microprocessor is connected by modulus conversion chip with 6 current detecting chips, 6 current detecting chip current input channels Respectively with the contactor of charging module one (1), the contactor of charging module two (2), the first batteries contactor (3), the second electric power storage Pond group contactor (4), No. 1 contactor (5) of charging module three, charging module three No. 2 contactor (6) positive supply cable concatenation；Microprocessor also passes through 6 optocoupler drive modules and the contactor of charging module one (1), the contactor of charging module two respectively (2), the first batteries contactor (3), the second batteries contactor (4), No. 1 contactor (5) of charging module three, charging mould The coil connection of No. 2 contactor (6) of block three, the mutual short circuit of 6 contactor coil other ends.
- 2. the anti-misoperation locking control system of transformer station direct current system according to claim 1, it is characterised in that：Current detecting Chip uses Hall-type current detecting chip.
- 3. the anti-misoperation locking control system of transformer station direct current system according to claim 1, it is characterised in that：It is described suddenly You are converted to 12 position digital signals by 6 road voltage analog signals of formula current detecting chip output by modulus conversion chip, the letter Number received by microprocessor.
- 4. the anti-misoperation locking control system of transformer station direct current system according to claim 1, it is characterised in that：Microprocessor Device, modulus conversion chip and current detecting chip operating voltage use DC5V, and the operating voltage of optocoupler drive module uses DC24V。
- A kind of 5. anti-misoperation locking controlling party based on the transformer station direct current system of anti-misoperation locking control system described in claim 1 Method, it is characterised in that：The contactor of charging module one (1), the contactor of charging module two (2), the first batteries are gathered by current detecting chip Contactor (3), the second batteries contactor (4), No. 1 contactor (5) of charging module three, No. 2 contactor (6) of charging module three Electric current, when each loop current signals of collection, after microprocessor judges every group of D.C. contactor logic state 0 or 1, microprocessor Logic blocking processing is proceeded by, latching logic has three kinds, respectively batteries locking, charging module locking and batteries The dual locking of charging module；Batteries locking, dc bus can not be departed from simultaneously by being defined as two group storage battery groups, i.e. logic state can not be simultaneously 0；Charging module is interlocked, and dc bus can not be departed from simultaneously by being defined as two groups of charging modules, i.e. logic state can not be simultaneously 0；Any group of disengaging bus of two groups of charging modules, the 3rd group of charging module automatically engage, i.e., when charging module one departs from direct current mother Line, then No. 1 contactor input of charging module three；When charging module two departs from dc bus, then No. 2 contactor of charging module three is thrown Enter；The dual locking of battery charging module, dc bus can not be departed from simultaneously by being defined as batteries and charging module.
- 6. the anti-misoperation locking control method of transformer station direct current system according to claim 5, it is characterised in that：Logic blocking Processing uses C language programming realization, including a main program, three subprograms；The contactor (1) of main program uninterrupted sampling charging module one, the contactor of charging module two (2), the contact of the first batteries Device (3), the second batteries contactor (4), No. 1 contactor (5) of charging module three, charging module three No. 2 contactor (6) electric current Data；When judging that the first batteries contactor (3) or the second any current logic amount of batteries contactor (4) are 0, lead Programming jump determines the first batteries contactor (3) and the second batteries to middle battery locking subprogram by the program Contactor (4) can not simultaneously switch off, and realize that battery locking judges and be back to main program to be circulated next time；When main program judges that the contactor of charging module one (1) or any current logic amount of the contactor of charging module two (2) are 0, Charging module locking subprogram is jumped to immediately, determines that the contactor of charging module one (1) and charging module two contact by the program Device (2) can not simultaneously switch off, while determine that No. 1 contactor (5) of charging module three or No. 2 contactor (6) of charging module three are corresponding Signal is put into, realizes that charging module locking judges and be back to main program to be circulated next time；When main program judges the contactor of charging module one (1), the contactor of charging module two (2), the first batteries contactor (3), in the second batteries contactor (4), the first batteries contactor (3) and the contactor of charging module one (1) electric current are patrolled It is simultaneously 0 to collect amount, and main program jumps to the dual locking subprogram of battery charging module, determines that charging module two connects by the program Tentaculum (2) and the second batteries contactor (4) can not disconnect, and determine No. 1 contactor (5) of charging module three and charging module three No. 2 contactors (6) while signal is put into, realize the dual locking of battery charging module.
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| CN201711227719.9A CN107846074A (en) | 2017-11-29 | 2017-11-29 | The anti-misoperation locking control system and method for a kind of transformer station direct current system |
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| CN201711227719.9A CN107846074A (en) | 2017-11-29 | 2017-11-29 | The anti-misoperation locking control system and method for a kind of transformer station direct current system |
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