CN205826822U - A kind of switch condition detection circuit of protective relaying device - Google Patents
A kind of switch condition detection circuit of protective relaying device Download PDFInfo
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- CN205826822U CN205826822U CN201620768516.5U CN201620768516U CN205826822U CN 205826822 U CN205826822 U CN 205826822U CN 201620768516 U CN201620768516 U CN 201620768516U CN 205826822 U CN205826822 U CN 205826822U
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Abstract
This utility model provides the switch condition detection circuit of a kind of protective relaying device, determines unit including closing circuit, sub-gate circuit, flag set loop, point position measure loop and on off state.Switching signal according to monitoring switch and sub-gate signal, it is judged that on off state is the most corresponding with switching signal or sub-gate signal, when monitoring switch and not receiving sub-gate signal under closing position state and becoming point position state, it is determined that described on off state exception.This utility model is capable of the switch of protective relaying device carrying out manually, under remote control, the multiple mode of operation such as automatically or remotely; occur that switch operating mechanism fault causes abnormal tripping operation, when causing improper on off state to change; detect that improper on off state changes accurately and timely; the accidents such as the open-phase operation owing to the exception of on off state causes, power failure range expansion, device damage that effectively prevent occur, and improve power supply reliability.
Description
Technical field
This utility model relates to technical field of electric power, is specifically related to the on off state detection electricity of a kind of protective relaying device
Road.
Background technology
In the protective relaying device of power system, traditional relay protection is generally limited to the most manually grasping switch
Make.Traditional relay protection circuit is typically with " after closing in advance, closing, close, after pre-point, point, point " six groups of contacts, " after conjunction " therein
" after point " contact has free travel, it is possible to be in self-sustaining state after the combined floodgate or sub-switching operation of switch, until having anti-
Just can be opened or closed when manual operation.In general wiring, by " point position " auxiliary contact string of " after conjunction " contact with switch
Connection, forms the most corresponding signal circuit in the position of the switch.After switch closes a floodgate, cause tripping operation as faulty, the most corresponding signal circuit
Connect, thus start warning.
Along with microcomputer protective relay device popularizing in power system, the operation to switch is no longer limited to the most manually grasp
Making, add remote manipulation, be automatically brought into operation and remotely control the modes such as the other control box of machine, six groups of traditional contacts are by " remote control, just
Ground, separating brake, combined floodgate " four groups of contacts are replaced.This mode of connection, it is impossible to form the position of the switch by " after conjunction " contact more right
Induction signal loop, switch remote manipulation, be automatically brought into operation or remotely under the multiple mode of operation such as operation, switching manipulation machine occur
Structure fault causes abnormal tripping operation, when causing improper on off state to change, it is difficult to improper switch shape detected accurately and timely
The change of state also makes early warning, and the accidents such as open-phase operation, power failure range expansion, device damage may be caused to occur.
Utility model content
The technical problems to be solved in the utility model is that the switch overcoming existing protective relaying device is due to abnormal tripping operation
When causing improper on off state to change etc. reason, it is difficult to the defect of improper on off state detected accurately and timely.
This utility model provides the switch condition detection circuit of a kind of protective relaying device, including:
Closing circuit, including closing relay, described closing circuit is used for receiving switching signal, and described closing relay exists
Feed motion is carried out when receiving described switching signal；
Sub-gate circuit, including separating brake relay, described sub-gate circuit is used for receiving sub-gate signal, and described separating brake relay exists
Separating brake action is carried out when receiving described sub-gate signal；
Flag set loop, is connected with the coil of the coil of described closing relay and described separating brake relay, exists respectively
When described closing relay carries out action and when described separating brake relay carries out action, export different marking signals；
Point position measure loop, is connected with the coil of power switch, respectively when described power switch is in conjunction position state with
When described power switch is in point position state, export different status signals；
On off state determines unit, with described closing circuit, described sub-gate circuit, described flag set loop and described point
Position measure loop connects, and for sending described switching signal and described sub-gate signal according to external input signal, is additionally operable to receive
Described marking signal and described status signal, and determine described power switch according to described marking signal and described status signal
State is the most normal.
Preferably, described on off state determines that unit is receiving the closing by hand signal of outside input, remote control combined floodgate letter
Number, reclosing signal time, send described switching signal；Described on off state determines that unit is receiving manually dividing of outside input
When lock signal, remote control sub-gate signal, trip protection signal, send described sub-gate signal.
Preferably, described closing circuit includes:
Closing by hand input sub-loop, for receiving the closing by hand signal of outside input, and by light every opening to described
Off status determines closing by hand signal described in unit forwards；
Closing by hand output sub-loop, for receiving the switching signal that described on off state determines that unit sends, and passes through
Light is every forwarding described switching signal to closing by hand relay；
Remote control closing circuit, for receiving the switching signal that described on off state determines that unit sends, and pass through light every to
Remote control closing relay forwards described switching signal；
Reclosure loop reform, for receiving the switching signal that described on off state determines that unit sends, and by light every to weight
Closing relay forwards described switching signal；
Combined floodgate self-holding circuit, is connected with described power switch, when described power switch carries out feed motion, starts and closes
Lock latch-in relay, until after closing a floodgate successfully, switching current disappears, and makes described combined floodgate latch-in relay return.
Preferably, described sub-gate circuit includes:
Manual brake separating input sub-loop, is used for receiving manual brake separating signal, and by light every determining to described on off state
Manual brake separating signal described in unit forwards；
Manual brake separating output sub-loop, for receiving the sub-gate signal that described on off state determines that unit sends, and passes through
Light is every forwarding described sub-gate signal to manual brake separating relay；
Remote control sub-gate circuit, for receiving the sub-gate signal that described on off state determines that unit sends, and pass through light every to
Remote control separating brake relay forwards described sub-gate signal；
Trip protection loop, for receiving the sub-gate signal that described on off state determines that unit sends, and pass through light every to
Trip protection relay forwards described sub-gate signal；
Separating brake self-holding circuit, is connected with described power switch, when described power switch carries out sub-switching operation, starts and divides
Lock latch-in relay, until after separating brake success, separating brake current vanishes, make described separating brake latch-in relay return.
Preferably, described flag set loop includes twin coil magnetic latching relay, and actuating coil HHWJ-S therein leads to
Cross diode to be connected with the coil of the closing relay of described closing circuit, when described closing relay starts, described startup
Coil HHWJ-S starts, and determines that unit sends the first marking signal to described on off state；
The involution coil HHWJ-R of described twin coil magnetic latching relay is by the separating brake of diode with described sub-gate circuit
The coil of relay is connected, and when described separating brake relay starts, described involution coil HHWJ-R starts, and to described switch shape
State determines that unit sends the second marking signal.
Preferably, described point of position measure loop include resistor and light every device, described light every one end of device through described resistance
Device current limliting is followed by operation power supply, and the other end connects the coil of described power switch, when described power switch is in conjunction position, and institute
State light and determine that unit sends the first status signal every device to described on off state, when described power switch is in point position, described
To described on off state, light determines that unit sends the second status signal every device.
Preferably, described on off state determines that described marking signal and described status signal are identified by unit, works as institute
State the closing relay indicated by marking signal and carry out action, and the state of the described power switch indicated by described status signal
During for dividing position, it is determined that the abnormal state of described power switch.
Preferably, described on off state determines that unit is additionally operable to judging that the state of described power switch, as time abnormal, is sent out
Send abnormal indication signal.
Preferably, described circuit also includes signal output loop, determines that unit is connected with described on off state, is used for receiving
Described abnormal indication signal, described signal output loop include light every device and early warning signal relay, when described signal exports back
When road receives described abnormal indication signal, described light drives the described early warning signal actuating of relay every device.
Technical solutions of the utility model, have the advantage that
The switch condition detection circuit of protective relaying device that this utility model provides, including closing circuit, sub-gate circuit,
Flag set loop, point position measure loop and on off state determine unit.Switching signal according to monitoring switch and sub-gate signal,
Judge that on off state is the most corresponding with switching signal or sub-gate signal, under closing position state, do not receive separating brake when monitoring switch
Signal and when becoming point position state, it is determined that described on off state is abnormal.This utility model is capable of opening of protective relaying device
Close carrying out manually, under remote control, the multiple mode of operation such as automatically or remotely, occur that switch operating mechanism fault causes abnormal jumping
Lock, when causing improper on off state to change, detect that improper on off state changes accurately and timely, effectively prevent by
The accidents such as the open-phase operation that causes in the exception of on off state, power failure range expansion, device damage occur, and improve power supply can
By property.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, below by right
In detailed description of the invention or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be embodiments more of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the switch condition detection circuit of a kind of protective relaying device；
Fig. 2 is the external wiring diagram of the switch condition detection circuit of a kind of protective relaying device；
Fig. 3 be a kind of protective relaying device switch condition detection circuit in the circuit diagram of closing circuit；
Fig. 4 be a kind of protective relaying device switch condition detection circuit in the circuit diagram of sub-gate circuit；
Fig. 5 be a kind of protective relaying device switch condition detection circuit in flag set loop, point position measure loop and
The circuit diagram of signal output loop.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, it is clear that described
Embodiment is a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, this
The every other embodiment that field those of ordinary skill is obtained under not making creative work premise, broadly falls into this practicality
Novel protected scope.
In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term
Directly ", " level ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, be only
Must have specific for the ease of describing this utility model and simplification description rather than instruction or the device of hint indication or element
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary,
Can also is that the connection of two element internals, can be wireless connections, it is also possible to be wired connection.Common skill for this area
For art personnel, above-mentioned term concrete meaning in this utility model can be understood with concrete condition.
As long as additionally, technical characteristic involved in this utility model difference embodiment disclosed below is each other
The conflict of not constituting just can be combined with each other.
The present embodiment provide a kind of protective relaying device switch condition detection circuit, its structural representation as it is shown in figure 1,
Unit 15 and is determined including closing circuit 11, sub-gate circuit 12, flag set loop 13, point position measure loop 14, on off state
Signal output loop 16.Wherein, closing circuit 11 includes that closing relay, closing circuit 11 are used for receiving switching signal, described
Closing relay carries out feed motion when receiving described switching signal；Sub-gate circuit 12 includes separating brake relay, and separating brake returns
Road 12 is used for receiving sub-gate signal, and described separating brake relay carries out separating brake action when receiving described sub-gate signal；Mark is put
Loop 13, position, with the coil of separating brake relay described in the coil of closing relay described in closing circuit 11 and sub-gate circuit 12
Connect, respectively when described closing relay carries out action and when described separating brake relay carries out action, export different marks
Signal；Point position measure loop 14, is connected with the coil of power switch 17, respectively when power switch 17 is in and closes position state and electricity
When power switch 17 is in point position state, export different status signals；On off state determines unit 15, respectively with closing circuit
11, sub-gate circuit 12, flag set loop 13 and a point position measure loop 14 connect, described for sending according to external input signal
Switching signal and described sub-gate signal, be additionally operable to receive described marking signal and described status signal, and according to described mark letter
Number and described status signal determine that the state of power switch 17 is the most normal.
The switch condition detection circuit of this protective relaying device, according to switching signal and the sub-gate signal of monitoring switch, sentences
Disconnect off status the most corresponding with switching signal or sub-gate signal, under closing position state, do not receive separating brake letter when monitoring switch
Number and when becoming point position state, it is determined that described on off state is abnormal.This testing circuit can occur at power switch operating mechanism
Fault causes abnormal tripping operation, when causing improper on off state to change, detect that improper on off state becomes accurately and timely
Changing, the accidents such as the open-phase operation owing to the exception of on off state causes, power failure range expansion, device damage that effectively prevent are sent out
Raw, improve power supply reliability.
The external wiring diagram of the switch condition detection circuit of this protective relaying device is as shown in Figure 2.Wherein, breaking-closing operating
Switch 24, represents with SA, and including two groups of contacts, 1 and 2 one group of contact of composition, for closing operation contact, 3 and 4 compositions one group touch
Point, for sub-switching operation contact, is used for realizing closing operation and the sub-switching operation of power switch 17.Control bus 23, respectively with+KM
Represent with-KM, provide power supply for switching manipulation and this testing circuit, typically provided by outside direct current or alternating current 220V power supply.
The equivalent circuit 21 of the testing circuit that this utility model embodiment provides includes terminal D01～D16.Wherein, SHJ table
Showing closing by hand relay, YHJ represents remote control closing relay, and CHJ represents that multiple switching relay, HBJ represent combined floodgate self-sustaining
Relay；STJ represents manual brake separating relay, and YTJ represents remote control separating brake relay, and TZJ represents trip protection relay, TBJ
Represent separating brake latch-in relay.Relay HHWJ is used for flag set, uses twin coil magnetic latching relay, including starting line
Circle HHWJ-S and involution coil HHWJ-R.TWJ represents a point position detection relay.
The equivalent circuit 22 of the operation circuit of power switch 17 includes switching auxiliary contact QF, closing coil LC and separating brake line
Circle LT.
Closing relay, including closing by hand relay SHJ, remote control closing relay YHJ, multiple switching relay CHJ,
When receiving the closing by hand signal of outside input, remote control switching signal, reclosing signal, closing relay carries out closing a floodgate and moves
Make.As closing by hand relay SHJ, remote control closing relay YHJ, multiple switching relay CHJ, combined floodgate latch-in relay HBJ
Any one loop in the loop when connecting, the actuating coil HHWJ-S energising of relay HHWJ, relay HHWJ connects.
Separating brake relay, including manual brake separating relay STJ, remote control separating brake relay YTJ, trip protection relay TZJ,
When receiving the manual brake separating signal of outside input, remote control sub-gate signal, trip protection signal, separating brake relay carries out separating brake
Action.After relay HHWJ connects, manual brake separating relay STJ, remote control separating brake relay YTJ, trip protection relay
TZJ, separating brake latch-in relay TBJ any one loop in the loop when connecting, then make the involution coil of relay HHWJ
HHWJ-R is energized, and relay HHWJ disconnects.
After relay HHWJ connects, in the case of there is no sub-switching operation, as because of power switch operating mechanism fault or
Other reason causes switch separating brake, then divide position detection relay TWJ to connect, then in Fig. 2, terminal D15～D16 loop are connected, and send
Early warning signal.
In the switch condition detection circuit of this protective relaying device, the circuit diagram of closing circuit is as it is shown on figure 3, wiring in Fig. 3
The external cabling of terminal D01～D16 is identical with Fig. 2.Wherein, VCC～GND represents and is carried by power module inside protective relaying device
The 5V working power of confession；24V+～24V-represents the 24V power supply provided inside protective relaying device by power module.This combined floodgate returns
Road include closing by hand input sub-loop 31, closing by hand output sub-loop 32, remote control closing circuit 33, reclosure loop reform 34,
Combined floodgate self-holding circuit 35.
Closing by hand input sub-loop 31, for receiving the closing by hand signal of outside input, and passes through light every U1 to opening
Off status determines that unit 15 forwards described closing by hand signal；Closing by hand output sub-loop 32, is used for receiving on off state true
The switching signal that cell 15 sends, and forward described switching signal every U2 to closing by hand relay SHJ by light；Remote control is closed
Lock loop 33, for receiving the switching signal that on off state determines that unit 15 sends, and is closed a floodgate relay to remote control every U3 by light
Device YHJ forwards described switching signal；Reclosure loop reform 34, for receiving the switching signal that on off state determines that unit 15 sends,
And forward described switching signal every U4 to multiple switching relay CHJ by light；Combined floodgate self-holding circuit 35, with power switch 17 even
Connect, when described power switch carries out feed motion, start combined floodgate latch-in relay HBJ, until after closing a floodgate successfully, close a floodgate electricity
Stream disappears, and makes combined floodgate latch-in relay HBJ return.
Specifically, terminal D13 is closing by hand signal input part.When switch carries out closing by hand operation, D13 connects
+ KM, determines the switching signal of unit 15 one Ki1=1s every U1 on off state by light.On off state determines that unit 15 receives
After this signal, output one Ko1=0 instruction, by light every U2 drive closing by hand relay SHJ, connect D01 (connect+
And D03 KM)；When switch is remotely controlled closing operation, after on off state determines that unit 15 receives host computer remote information,
The instruction of one Ko2=0 of output, drives remote control closing relay YHJ by light every U3, connects D01 (connection+KM) and D04；?
When switch being carried out reclosing operation after primary equipment fault, on off state determines that unit 15 exports the instruction of a Ko3=0,
Drive multiple switching relay CHJ by light every U4, connect D01 (connection+KM) and D05.It is to close a floodgate certainly between terminal D06～D07
Keep loop.When switch is carried out closing operation, switching current flows through produced about 1.4V electricity during diode VD4～VD7
Pressure reduction, after R7 current limliting, some light is every light emitting diode primary for U5, U5 level one high voltage signal of output, this signal warp
After the filter filtering that R8, C1, R9, C2 are integrated, start combined floodgate latch-in relay HBJ, connect D01 (+KM) and D06, and protect
Holding this state, until after closing a floodgate successfully, switching current disappears, the voltage difference on diode VD4～VD7 reduces to 0, and light is every at the beginning of U5
The light emitting diode of level extinguishes, and combined floodgate latch-in relay HBJ returns immediately.
On off state determines that unit 15 is receiving the closing by hand signal of outside input, remote control switching signal, reclosing
During signal, send described switching signal.The optoisolator used in the present embodiment can suppression system noise effectively, eliminate ground connection
The interference in loop, has the advantages such as response speed is very fast, life-span length, the little impact resistance of volume.
In the switch condition detection circuit of this protective relaying device, the circuit diagram of sub-gate circuit is as shown in Figure 4, wiring in Fig. 4
The external cabling of terminal D01～D16 is identical with Fig. 2.This sub-gate circuit includes that manual brake separating input sub-loop 41, manual brake separating are defeated
Go out sub-loop 42, remote control sub-gate circuit 43, trip protection loop 44, separating brake self-holding circuit 45.
Manual brake separating input sub-loop 41, is used for receiving manual brake separating signal, and is determined on off state every U6 by light
Unit 15 forwards described manual brake separating signal；Manual brake separating output sub-loop 42, is used for receiving on off state and determines unit 15
The sub-gate signal sent, and forward described sub-gate signal every U7 to manual brake separating relay STJ by light；Remote control sub-gate circuit 43,
For receiving the sub-gate signal that on off state determines that unit 15 sends, and forwarded to remote control separating brake relay YTJ every U8 by light
Described sub-gate signal；Trip protection loop 44, for receiving the sub-gate signal that on off state determines that unit 15 sends, and passes through light
Described sub-gate signal is forwarded to trip protection relay TZJ every U9；Separating brake self-holding circuit 45, is connected with power switch 17,
When described power switch carries out sub-switching operation, start separating brake latch-in relay TBJ, until after separating brake success, separating brake electric current disappears
Lose, make separating brake latch-in relay TBJ return.
Specifically, terminal D14 is manual brake separating signal input part.When switch being carried out manual brake separating operation, terminal D14
Connection+KM, determines the switching signal of unit 15 one Ki2=1s every U6 on off state by light, and on off state determines unit 15
After receiving this signal, the instruction of one Ko4=0 of output, drive manual brake separating relay STJ by light every U7, connect D01
(connection+KM) and D08；When switch is remotely controlled sub-switching operation, on off state determines that unit 15 receives host computer remote control
After information, the instruction of one Ko5=0 of output, drive remote control separating brake relay YTJ by light every U8, connect D01 (connection+KM)
And D09；When primary equipment fault, on off state determines that unit 15 exports the trip protection instruction of a Ko6=0, by light
Drive trip protection relay TZJ every U9, connect D01 (connection+KM) and D10.It it is separating brake self-sustaining between terminal D11～D12
Loop.When switch is carried out sub-switching operation, separating brake electric current flows through produced about 1.4V voltage during diode VD12～VD15
Difference, after R16 current limliting, some light is every light emitting diode primary for U10, U10 level one high voltage signal of output, this signal warp
After the filter filtering that R17, C3, R18, C4 are integrated, start separating brake latch-in relay TBJ, connect D01 (connection+KM) and
D11, and keep this state, until after separating brake success, separating brake current vanishes, the voltage difference on diode VD12～VD15 is reduced to
0, light extinguishes every light emitting diode primary for U10, and separating brake latch-in relay TBJ returns immediately.
On off state determines that unit 15 is receiving the manual brake separating signal of outside input, remote control sub-gate signal, protection jumping
During lock signal, send described sub-gate signal.
Flag set loop, point position measure loop and signal output in the switch condition detection circuit of this protective relaying device
The circuit diagram in loop is respectively as it is shown in figure 5, the external cabling of Fig. 5 middle connecting terminal D01～D16 is identical with Fig. 2.
Flag set loop 51, including twin coil magnetic latching relay HHWJ, actuating coil HHWJ-S therein by two
Pole pipe is connected with the coil of the closing relay of described closing circuit, including closing by hand relay SHJ, remote control closing relay
YHJ, multiple switching relay CHJ and combined floodgate latch-in relay HBJ.When described closing relay starts, actuating coil HHWJ-
S starts, and determines that unit 15 sends the first marking signal on off state；The involution coil of twin coil magnetic latching relay
HHWJ-R is connected with the coil of the separating brake relay of described sub-gate circuit by diode, including manual brake separating relay STJ, distant
Control separating brake relay YTJ, trip protection relay TZJ and separating brake latch-in relay TBJ.When described separating brake relay starts
Time, involution coil HHWJ-R starts, and determines that unit 15 sends the second marking signal on off state.
Point position measure loop 52, including resistor and light every device.Light is followed by through described resistor current limiting every one end of device U11
To operating power supply+KM, the other end connects the coil of power switch 17.When described power switch be in conjunction position time, light every device U11 to
On off state determines that unit 15 sends the first status signal, when described power switch is in point position, light every device U11 to switch shape
State determines that unit 15 sends the second status signal.
On off state determines that described marking signal and described status signal are identified by unit 15, when described marking signal
Indicated closing relay carries out action, and when the state of the described power switch indicated by described status signal is to divide position,
Judge the abnormal state of described power switch.
On off state determines that unit 15 is additionally operable to judging that the state of described power switch, as time abnormal, sends abnormal instruction
Signal.
As one preferred embodiment, the switch condition detection circuit of this protective relaying device also includes that signal exports
Loop 53.Signal output loop 53 determines that with on off state unit 15 is connected, and is used for receiving described abnormal indication signal.Signal is defeated
Go out loop 53 and include that light, every device U12 and early warning signal relay YGJ, is believed when signal output loop 53 receives described abnormal instruction
Number time, light every device U12 drive early warning signal relay YGJ action, thus can utilize early warning signal relay YGJ realize report
Alert function.
Specifically, relay HHWJ uses twin coil magnetic latching relay, and actuating coil HHWJ-S passes through diode and conjunction
Coil SHJ.1, CHJ.1, YHJ.1, HBJ.1 of four relays SHJ, CHJ, YHJ, the HBJ in lock loop is connected.When SHJ, YHJ,
When any one in CHJ, HBJ starts, coil HHWJ-S starts the most therewith, makes contact 4～8 connect, determines list on off state
Unit 15 sends the signal of a Ki3=1, the i.e. first marking signal；The involution coil HHWJ-R of relay HHWJ passes through diode
It is connected with coil STJ.1, YTJ.1, TZJ.1, TBJ.1 of four relays STJ, YTJ, TZJ, TBJ of sub-gate circuit.Relay
HHWJ start after, if in STJ, YTJ, TZJ, TBJ any one start, then coil HHWJ-R starts the most therewith, make contact 4～
8 disconnect, and determine that unit 15 sends the signal of a Ki3=0, the i.e. second marking signal on off state.
Point position measure loop 52 includes that resistor R20, R21, R22 and light are every device U11.Light every primary one end of U11 through electricity
Resistance R20 current limliting is followed by positive source+KM, and the other end is received on the closing coil LC of power switch 17 by binding post D07.
When switch is in conjunction position, closing coil LC disconnects, and loop is not turned on, and U11 time level disconnects, and delivers on off state and determines unit
The signal of 15 is Ki4=0, the i.e. first status signal.When switch is in point position, closing coil LC connects, and electric current is through R20, U11
Primary, closing coil LC forms loop, U11 level connection, delivers on off state and determines that the signal of unit 15 is Ki4=1, and i.e. the
Two-state signal.
On off state determines unit 15 judgement symbol signal Ki3 and the state of status signal Ki4, if occur Ki3=1 and
The situation of Ki4=1, i.e. closes at the switch not receiving separating brake actuating signal and detects that described switch becomes a point position shape under the state of position
State, then judge that on off state occurs abnormal, determine that unit 15 sends on off state abnormal signal on off state.
Now, on off state determines that unit 15 exports the control signal of Ko7=0, i.e. abnormal indication signal, by light every
U12 drives early warning signal relay YGJ action.The contact of early warning signal relay YGJ is exported one by terminal D15～D16 and opens
Off status abnormal indication signal.
This testing circuit be capable of the switch of protective relaying device carrying out manually, remote control, automatically or remotely etc. multiple
Under mode of operation, occur switch operating mechanism fault cause abnormal tripping operation, when causing improper on off state to change, accurately and
Time detect that improper on off state changes, effectively prevent the open-phase operation owing to the exception of on off state causes, stop
The electricity accident such as expanded range, device damage occurs, and improves power supply reliability.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.Right
For those of ordinary skill in the field, can also make on the basis of the above description other multi-form change or
Variation.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or
Change among the protection domain still in this utility model creation.
Claims (9)
1. the switch condition detection circuit of a protective relaying device, it is characterised in that including:
Closing circuit, including closing relay, described closing circuit is used for receiving switching signal, and described closing relay is receiving
To carrying out feed motion during described switching signal；
Sub-gate circuit, including separating brake relay, described sub-gate circuit is used for receiving sub-gate signal, and described separating brake relay is receiving
To carrying out separating brake action during described sub-gate signal；
Flag set loop, is connected with the coil of the coil of described closing relay and described separating brake relay, respectively described
When closing relay carries out action and when described separating brake relay carries out action, export different marking signals；
Point position measure loop, is connected with the coil of power switch, respectively when described power switch is in and closes position state and described
When power switch is in point position state, export different status signals；
On off state determines unit, with described closing circuit, described sub-gate circuit, described flag set loop and described point of position inspection
Survey time road connects, and for sending described switching signal and described sub-gate signal according to external input signal, is additionally operable to reception described
Marking signal and described status signal, and the state of described power switch is determined according to described marking signal and described status signal
The most normal.
Circuit the most according to claim 1, it is characterised in that described on off state determines that unit is receiving outside input
Closing by hand signal, remote control switching signal, reclosing signal time, send described switching signal；Described on off state determines list
Unit, when receiving the manual brake separating signal of outside input, remote control sub-gate signal, trip protection signal, sends described separating brake letter
Number.
Circuit the most according to claim 2, it is characterised in that described closing circuit includes:
Closing by hand input sub-loop, for receiving the closing by hand signal of outside input, and by light every to described switch shape
State determines closing by hand signal described in unit forwards；
Closing by hand output sub-loop, for receiving the switching signal that described on off state determines that unit sends, and pass through light every
Described switching signal is forwarded to closing by hand relay；
Remote control closing circuit, for receiving the switching signal that described on off state determines that unit sends, and by light every to remote control
Closing relay forwards described switching signal；
Reclosure loop reform, for receiving the switching signal that described on off state determines that unit sends, and by light every to reclosing
Relay forwards described switching signal；
Combined floodgate self-holding circuit, is connected with described power switch, when described power switch carries out feed motion, starts and closes a floodgate certainly
Guard relay, until after closing a floodgate successfully, switching current disappears, and makes described combined floodgate latch-in relay return.
Circuit the most according to claim 2, it is characterised in that described sub-gate circuit includes:
Manual brake separating input sub-loop, is used for receiving manual brake separating signal, and by light every determining unit to described on off state
Forward described manual brake separating signal；
Manual brake separating output sub-loop, for receiving the sub-gate signal that described on off state determines that unit sends, and pass through light every
Described sub-gate signal is forwarded to manual brake separating relay；
Remote control sub-gate circuit, for receiving the sub-gate signal that described on off state determines that unit sends, and by light every to remote control
Separating brake relay forwards described sub-gate signal；
Trip protection loop, for receiving the sub-gate signal that described on off state determines that unit sends, and by light every to protection
Tripping relay forwards described sub-gate signal；
Separating brake self-holding circuit, is connected with described power switch, when described power switch carries out sub-switching operation, starts separating brake certainly
Guard relay, until after separating brake success, separating brake current vanishes, make described separating brake latch-in relay return.
Circuit the most according to claim 1, it is characterised in that described flag set loop includes that twin coil magnetic keeps relay
Device, actuating coil HHWJ-S therein is connected with the coil of the closing relay of described closing circuit, when described by diode
When closing relay starts, described actuating coil HHWJ-S starts, and determines that unit sends the first mark to described on off state
Signal；
The involution coil HHWJ-R of described twin coil magnetic latching relay is by the separating brake relay of diode with described sub-gate circuit
The coil of device is connected, and when described separating brake relay starts, described involution coil HHWJ-R starts, and true to described on off state
Cell sends the second marking signal.
Circuit the most according to claim 1, it is characterised in that described point of position measure loop includes:
Resistor and light are every device, and described light is followed by operation power supply through described resistor current limiting every one end of device, and the other end connects
The coil of described power switch, when described power switch is in conjunction position, described light determines unit every device to described on off state
Sending the first status signal, when described power switch is in point position, to described on off state, described light determines that unit is sent out every device
Send the second status signal.
Circuit the most according to claim 1, it is characterised in that described on off state determine unit to described marking signal and
Described status signal is identified, when the closing relay indicated by described marking signal carries out action, and described status signal
When the state of indicated described power switch is for dividing position, it is determined that the abnormal state of described power switch.
Circuit the most according to claim 1, it is characterised in that it is described that described on off state determines that unit is additionally operable in judgement
When the state of power switch is abnormal, send abnormal indication signal.
Circuit the most according to claim 8, it is characterised in that described circuit also includes:
With described on off state, signal output loop, determines that unit is connected, be used for receiving described abnormal indication signal, described signal
Output loop include light every device and early warning signal relay, when described signal output loop receives described abnormal indication signal
Time, described light drives the described early warning signal actuating of relay every device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620768516.5U CN205826822U (en) | 2016-07-19 | 2016-07-19 | A kind of switch condition detection circuit of protective relaying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620768516.5U CN205826822U (en) | 2016-07-19 | 2016-07-19 | A kind of switch condition detection circuit of protective relaying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205826822U true CN205826822U (en) | 2016-12-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620768516.5U Withdrawn - After Issue CN205826822U (en) | 2016-07-19 | 2016-07-19 | A kind of switch condition detection circuit of protective relaying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205826822U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019137A (en) * | 2016-07-19 | 2016-10-12 | 南宏电力科技有限公司 | Switch state detecting circuit of protective relaying device |
| CN109217854A (en) * | 2017-07-04 | 2019-01-15 | 许继集团有限公司 | It is applicable in the indicating circuit of two kinds of level driving |
| CN111693804A (en) * | 2020-05-27 | 2020-09-22 | 广州市扬新技术研究有限责任公司 | Method for realizing reclosing test function of direct current relay protection tester based on FPGA |
| CN115327370A (en) * | 2022-10-17 | 2022-11-11 | 广东电网有限责任公司中山供电局 | Automatic maintenance test method, system and equipment for VS1 type trolley switch |
-
2016
- 2016-07-19 CN CN201620768516.5U patent/CN205826822U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019137A (en) * | 2016-07-19 | 2016-10-12 | 南宏电力科技有限公司 | Switch state detecting circuit of protective relaying device |
| CN106019137B (en) * | 2016-07-19 | 2018-07-27 | 南宏电力科技有限公司 | A kind of switch condition detection circuit of protective relaying device |
| CN109217854A (en) * | 2017-07-04 | 2019-01-15 | 许继集团有限公司 | It is applicable in the indicating circuit of two kinds of level driving |
| CN109217854B (en) * | 2017-07-04 | 2023-06-02 | 许继集团有限公司 | Indication circuit suitable for two level driving |
| CN111693804A (en) * | 2020-05-27 | 2020-09-22 | 广州市扬新技术研究有限责任公司 | Method for realizing reclosing test function of direct current relay protection tester based on FPGA |
| CN115327370A (en) * | 2022-10-17 | 2022-11-11 | 广东电网有限责任公司中山供电局 | Automatic maintenance test method, system and equipment for VS1 type trolley switch |
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