CN106019137A - Switch state detecting circuit of protective relaying device - Google Patents
Switch state detecting circuit of protective relaying device Download PDFInfo
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- CN106019137A CN106019137A CN201610573095.5A CN201610573095A CN106019137A CN 106019137 A CN106019137 A CN 106019137A CN 201610573095 A CN201610573095 A CN 201610573095A CN 106019137 A CN106019137 A CN 106019137A
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- 230000002159 abnormal effect Effects 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 230000009471 action Effects 0.000 claims description 16
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- 238000010586 diagram Methods 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 5
- 208000033999 Device damage Diseases 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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Abstract
The invention provides a switch state detecting circuit of a protective relaying device. The switch state detecting circuit comprises a closing loop, an opening loop, a sign setting loop, an opening position detection loop and a switch state determination unit. Whether a switch state corresponds to a closing signal or an opening signal can be determined according to the closing signal or the opening signal of a monitored switch. When a switch switches to an opening state under a closing state without receiving an opening signal, the switch state is determined to be abnormal. When a switch with a protective relaying device is under manual operation, remote control and automatic operation models, abnormal switch state change can be accurately and timely detected once abnormal switch state change occurs due to abnormal tripping caused by switch operating mechanism fault. Non-full-phase operation, larger power failure scope and equipment damage accidents due to abnormal state of a switch can be effectively prevented, and the reliability of power supply can be improved.
Description
Technical field
The present invention relates to technical field of electric power, be specifically related to the on off state inspection of a kind of protective relaying device
Slowdown monitoring circuit.
Background technology
In the protective relaying device of power system, traditional relay protection to switch is just generally limited to
Ground manual operation.Traditional relay protection circuit typically with " after closing in advance, closing, close, pre-point, point,
After point " six groups of contacts, " after conjunction " therein and " point afterwards " contact has free travel, it is possible to
It is in self-sustaining state, until could break when having reverse manual operation after the combined floodgate of switch or sub-switching operation
Open or close.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 is connected, thus starts warning.
Along with microcomputer protective relay device popularizing in power system, the operation to switch is no longer limited to
Manual operation on the spot, adds remote manipulation, is automatically brought into operation and remotely controls the modes such as the other control box of machine,
Traditional six groups of contacts are replaced by " remote control, on the spot, separating brake, combined floodgate " four groups of contacts.This connect
Line mode, it is impossible to form the most corresponding signal circuit in the position of the switch by " after conjunction " contact again, at switch
Remote manipulation, be automatically brought into operation or remotely under the multiple mode of operation such as operation, switch operating mechanism occur
Fault causes abnormal tripping operation, when causing improper on off state to change, it is difficult to detect accurately and timely
To the change of improper on off state and make early warning, open-phase operation, power failure range may be caused to expand
Greatly, the accident such as device damage occurs.
Summary of the invention
The technical problem to be solved in the present invention is that the switch overcoming existing protective relaying device is due to exception
When the reasons such as tripping operation cause improper on off state to change, it is difficult to detect improper accurately and timely
The defect of on off state.
The present invention 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, described
Closing relay carries out feed motion when receiving described switching signal；
Sub-gate circuit, including separating brake relay, described sub-gate circuit is used for receiving sub-gate signal, described
Separating brake relay carries out separating brake action when receiving described sub-gate signal；
Flag set loop, connects with the coil of the coil of described closing relay and described separating brake relay
Connect, respectively when described closing relay carries out action and when described separating brake relay carries out action, defeated
Go out different marking signals；
Divide position measure loop, be connected with the coil of power switch, be in conjunction at described power switch respectively
During the state of position and 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 of position measure loop connect, for sending described switching signal according to external input signal
With described sub-gate signal, it is additionally operable to receive described marking signal and described status signal, and according to described
Marking signal and described status signal determine that the state of described power switch is the most normal.
Preferably, described on off state determine unit receive outside input closing by hand signal,
When remote control switching signal, reclosing signal, send described switching signal；Described on off state determines list
It is first when receiving the manual brake separating signal of outside input, 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 passes through light
Every determining closing by hand signal described in unit forwards to described on off state；
Closing by hand output sub-loop, for receiving the combined floodgate letter that described on off state determines that unit sends
Number, and by light 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
By light every forwarding described switching signal to remote control closing relay；
Reclosure loop reform, for receiving the switching signal that described on off state determines that unit sends, and leads to
Cross light every forwarding described switching signal to multiple switching relay；
Combined floodgate self-holding circuit, is connected with described power switch, carries out closing a floodgate at described power switch and moves
When making, start combined floodgate latch-in relay, until after closing a floodgate successfully, switching current disappears, make described
Combined floodgate latch-in relay returns.
Preferably, described sub-gate circuit includes:
Manual brake separating input sub-loop, is used for receiving manual brake separating signal, and by light every opening to described
Off status determines manual brake separating signal described in unit forwards；
Manual brake separating output sub-loop, for receiving the separating brake letter that described on off state determines that unit sends
Number, and by light 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
By light every forwarding described sub-gate signal to remote control separating brake relay；
Trip protection loop, for receiving the sub-gate signal that described on off state determines that unit sends, and
By light every forwarding described sub-gate signal to trip protection relay；
Separating brake self-holding circuit, is connected with described power switch, carries out separating brake behaviour at described power switch
When making, start separating brake latch-in relay, until after separating brake success, separating brake current vanishes, make described
Separating brake latch-in relay returns.
Preferably, described flag set loop includes twin coil magnetic latching relay, startup line therein
Circle HHWJ-S is connected with the coil of the closing relay of described closing circuit, when described conjunction by diode
When lock relay starts, described actuating coil HHWJ-S starts, and determines unit to described on off state
Send the first marking signal；
The involution coil HHWJ-R of described twin coil magnetic latching relay is returned with described separating brake by diode
The coil of the separating brake relay on road is connected, when described separating brake relay starts, and described involution coil
HHWJ-R starts, and determines that unit sends the second marking signal to described on off state.
Preferably, described point of position measure loop include resistor and light every device, described light is every one end of device
Being followed by operation power supply through described resistor current limiting, the other end connects the coil of described power switch, when
When described power switch is in conjunction position, to described on off state, described light determines that unit sends first every device
Status signal, when described power switch is in point position, described light determines to described on off state every device
Unit sends the second status signal.
Preferably, described on off state determines that described marking signal and described status signal are carried out by unit
Identify, when the closing relay indicated by described marking signal carries out action, and described status signal institute
When the state of the described power switch of instruction is for dividing position, it is determined that the abnormal state of described power switch.
Preferably, described on off state determine unit be additionally operable to judge the state of described power switch as
Time abnormal, send abnormal indication signal.
Preferably, described circuit also includes signal output loop, determines that unit is even with described on off state
Connecing, be used for receiving described abnormal indication signal, described signal output loop includes that light is believed every device and early warning
Number relay, when described signal output loop receives described abnormal indication signal, described light is every device
Drive the described early warning signal actuating of relay.
Technical solution of the present invention, has the advantage that
The switch condition detection circuit of the protective relaying device that the present invention provides, including closing circuit, divides
Lock loop, flag set loop, point position measure loop and on off state determine unit.Open according to monitoring
The switching signal closed 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 institute
State on off state abnormal.The present invention be capable of the switch of protective relaying device carrying out manually, remote control,
Automatically, or remotely etc. under multiple mode of operation, occur that switch operating mechanism fault causes abnormal tripping operation, leads
When causing the change of improper on off state, detect that improper on off state changes accurately and timely, have
Effect avoids the open-phase operation owing to the exception of on off state causes, power failure range expands, equipment damages
The accidents such as evil idea occur, and improve power supply reliability.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, under
The accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described by face,
It should be evident that the accompanying drawing in describing below is some embodiments of the present invention, general for this area
From the point of view of logical technical staff, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Obtain other accompanying drawing.
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, technical scheme is clearly and completely described, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in bright, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, " left ",
Orientation or the position relationship of the instruction such as " right ", " vertically ", " level ", " interior ", " outward " are based on attached
Orientation shown in figure or position relationship, be for only for ease of description the present invention and simplify describe rather than
Instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and
Operation, is therefore not considered as limiting the invention.Additionally, term " first ", " second ", "
Three " it is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, art
Language " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing,
Can also be to removably connect, or be integrally connected；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, it is also possible to be two element internals
Connection, can be wireless connections, it is also possible to be wired connection.Ordinary skill people for this area
For Yuan, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.
As long as additionally, technical characteristic involved in invention described below difference embodiment that
The conflict of not constituting between this just can be combined with each other.
The present embodiment provides the switch condition detection circuit of a kind of protective relaying device, its structural representation
As it is shown in figure 1, include closing circuit 11, sub-gate circuit 12, flag set loop 13, point position inspection
Survey time road 14, on off state determine unit 15 and signal output loop 16.Wherein, closing circuit 11
Including closing relay, closing circuit 11 is used for receiving switching signal, and described closing relay is receiving
To carrying out feed motion during described switching signal；Sub-gate circuit 12 includes separating brake relay, sub-gate circuit
12 are used for receiving sub-gate signal, and described separating brake relay carries out separating brake when receiving described sub-gate signal
Action；Flag set loop 13, with coil and the separating brake of closing relay described in closing circuit 11
The coil of separating brake relay described in loop 12 connects, respectively when described closing relay carries out action
When carrying out action with described separating brake relay, export different marking signals；Divide position measure loop 14,
It is connected with the coil of power switch 17, opens with electric power when power switch 17 is in conjunction position state respectively
Close 17 when being in point position state, export different status signals；On off state determines unit 15, point
It is not connected with closing circuit 11, sub-gate circuit 12, flag set loop 13 and a point position measure loop 14,
For sending described switching signal and described sub-gate signal according to external input signal, it is additionally operable to receive institute
State marking signal and described status signal, and determine electricity according to described marking signal and described status signal
The state of power switch 17 is the most normal.
The switch condition detection circuit of this protective relaying device, according to the switching signal of monitoring switch and point
Lock signal, it is judged that on off state is the most corresponding with switching signal or sub-gate signal, exists when monitoring switch
Close when not receiving sub-gate signal under position state and become point position state, it is determined that described on off state exception.
This testing circuit can power switch operating mechanism break down cause abnormal tripping operation, cause improper
During on off state change, detect that improper on off state changes accurately and timely, effectively prevent
The accidents such as the open-phase operation that causes due to the exception of on off state, power failure range expansion, device damage
Occur, 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 form one group of contact, for
Closing operation contact, 3 and 4 one group of contact of composition, for sub-switching operation contact, it is used for realizing electric power and opens
Close closing operation and the sub-switching operation of 17.Control bus 23, represents, for opening with+KM and-KM respectively
Close operation and this testing circuit provides power supply, typically provided by outside direct current or alternating current 220V power supply.
The equivalent circuit 21 of the testing circuit that the embodiment of the present invention provides includes terminal D01～D16.Its
In, SHJ represents closing by hand relay, and YHJ represents remote control closing relay, and CHJ represents reclosing
Relay, HBJ represents combined floodgate latch-in relay；STJ represents manual brake separating relay, and YTJ represents
Remote control separating brake relay, TZJ represents trip protection relay, and TBJ represents separating brake latch-in relay.
Relay HHWJ is used for flag set, uses twin coil magnetic latching relay, including actuating coil
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 line
Circle LC and switching winding LT.
Closing relay, including closing by hand relay SHJ, remote control closing relay YHJ, reclosing
Relay CHJ, is receiving the closing by hand signal of outside input, remote control switching signal, reclosing
During signal, closing relay carries out feed motion.When closing by hand relay SHJ, remote control are closed a floodgate and continued
Electrical equipment YHJ, multiple switching relay CHJ, combined floodgate latch-in relay HBJ in the loop any one
When loop is connected, the actuating coil HHWJ-S energising of relay HHWJ, relay HHWJ connects.
Separating brake relay, jumps including manual brake separating relay STJ, remote control separating brake relay YTJ, protection
Lock relay TZJ, is receiving the manual brake separating signal of outside input, remote control sub-gate signal, protection
During trip 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 self-sustaining relay
Device 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 operated because of power switch
Mechanism-trouble or other reason cause switch separating brake, then divide position detection relay TWJ to connect, then Fig. 2
Middle terminal D15～D16 loop are connected, and send early warning signal.
In the switch condition detection circuit of this protective relaying device closing circuit circuit diagram as it is shown on figure 3,
The external cabling of Fig. 3 middle connecting terminal D01～D16 is identical with Fig. 2.Wherein, VCC～GND represents
The 5V working power provided by power module inside protective relaying device；24V+～24V-represents that relay is protected
The 24V power supply provided by power module inside protection unit.This closing circuit includes closing by hand input
Loop 31, closing by hand output sub-loop 32, remote control closing circuit 33, reclosure loop reform 34, conjunction
Lock self-holding circuit 35.
Closing by hand input sub-loop 31, for receiving the closing by hand signal of outside input, and passes through
To on off state, light determines that unit 15 forwards described closing by hand signal every U1；Closing by hand output
Loop 32, for receiving the switching signal that on off state determines that unit 15 sends, and by light every U2
Described switching signal is forwarded to closing by hand relay SHJ；Remote control closing circuit 33, opens for reception
Off status determines the switching signal that unit 15 sends, and passes through light every U3 to remote control closing relay YHJ
Forward described switching signal；Reclosure loop reform 34, determines what unit 15 sent for receiving on off state
Switching signal, and forward described switching signal every U4 to multiple switching relay CHJ by light；Close a floodgate certainly
Keep loop 35, be connected with power switch 17, when described power switch carries out feed motion, start
Combined floodgate latch-in relay HBJ, until after closing a floodgate successfully, switching current disappears, and makes combined floodgate self-sustaining continue
Electrical equipment HBJ returns.
Specifically, terminal D13 is closing by hand signal input part.When switch is carried out closing by hand behaviour
When making, D13 connection+KM, determine the opening of unit 15 one Ki1=1s every U1 on off state by light
OFF signal.After on off state determines that unit 15 receives this signal, the instruction of one Ko1=0 of output,
Drive closing by hand relay SHJ by light every U2, connect D01 (connection+KM) and D03；When right
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, switch shape
State determines that unit 15 exports the instruction of a Ko3=0, drives multiple switching relay CHJ by light every U4,
Connect D01 (connection+KM) and D05.It it is combined floodgate self-holding circuit between terminal D06～D07.Right
When switch carries out closing operation, switching current flows through produced about 1.4V during diode VD4～VD7
Voltage difference, after R7 current limliting, some light is every light emitting diode primary for U5, and U5 time level exports one
High voltage signal, this signal after the integrated filter filtering of R8, C1, R9, C2, start close a floodgate from
Guard relay HBJ, connects D01 (+KM) and D06, and keeps this state, until closing a floodgate successfully
After, switching current disappears, and the voltage difference on diode VD4～VD7 reduces to 0, and light is every primary the sending out of U5
Optical diode 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 combined floodgate letter
Number, reclosing signal time, send described switching signal.The optoisolator used in the present embodiment can have
Effect ground suppression system noise, eliminates the interference of earth-return circuit, has that response speed is very fast, life-span length, body
The advantages such as long-pending little impact resistance.
In the switch condition detection circuit of this protective relaying device, the circuit diagram of sub-gate circuit is as shown in Figure 4,
The external cabling of Fig. 4 middle connecting terminal D01～D16 is identical with Fig. 2.This sub-gate circuit includes manually dividing
Lock input sub-loop 41, manual brake separating output 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 by light every U6 to
On off state determines that unit 15 forwards described manual brake separating signal；Manual brake separating output sub-loop 42,
For receiving the sub-gate signal that on off state determines that unit 15 sends, and divided to manual every U7 by light
Lock relay STJ forwards described sub-gate signal；Remote control sub-gate circuit 43, is used for receiving on off state true
The sub-gate signal that cell 15 sends, and forward institute every U8 to remote control separating brake relay YTJ by light
State sub-gate signal；For receiving on off state, trip protection loop 44, determines that what unit 15 sent divides
Lock signal, and forward described sub-gate signal every U9 to trip protection relay TZJ by light；Separating brake is certainly
Keep loop 45, be connected with power switch 17, when described power switch carries out sub-switching operation, open
Dynamic separating brake latch-in relay TBJ, until after separating brake success, separating brake current vanishes, make separating brake self-insurance
Hold relay TBJ to return.
Specifically, terminal D14 is manual brake separating signal input part.When switch is carried out manual brake separating behaviour
When making, terminal D14 connection+KM, determine unit 15 one Ki2=1s every U6 on off state by light
Switching signal, after on off state determines that unit 15 receives this signal, output one Ko4=0 finger
Order, drives manual brake separating relay STJ by light every U7, connects 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 letter
After breath, the instruction of one Ko5=0 of output, drive remote control separating brake relay YTJ by light every U8, connect
Logical D01 (connection+KM) and D09；When primary equipment fault, on off state determines that unit 15 exports
The trip protection instruction of one Ko6=0, drives trip protection relay TZJ by light every U9, connects
D01 (connection+KM) and D10.It it is separating brake self-holding circuit between terminal D11～D12.To switch
When carrying out sub-switching operation, separating brake electric current flows through produced about 1.4V electricity during diode VD12～VD15
Pressure reduction, after R16 current limliting, some light is every light emitting diode primary for U10, and U10 time level exports one
High voltage signal, this signal, after the integrated filter filtering of R17, C3, R18, C4, starts separating brake
Latch-in relay TBJ, connects D01 (connection+KM) and D11, and keeps this state, until point
After lock success, separating brake current vanishes, the voltage difference on diode VD12～VD15 reduces to 0, and light is every U10
Primary light emitting diode extinguishes, 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 separating brake letter
Number, trip protection signal time, send described sub-gate signal.
Flag set loop, point position measure loop in the switch condition detection circuit of this protective relaying device
And the circuit diagram of signal output loop is respectively as it is shown in figure 5, outside Fig. 5 middle connecting terminal D01～D16
Portion's wiring is identical with Fig. 2.
Flag set loop 51, including twin coil magnetic latching relay HHWJ, actuating coil therein
HHWJ-S is connected with the coil of the closing relay of described closing circuit, including manually closing by diode
Lock relay SHJ, remote control closing relay YHJ, multiple switching relay CHJ and combined floodgate self-sustaining relay
Device HBJ.When described closing relay starts, actuating coil HHWJ-S starts, and on off state
Determine that unit 15 sends the first marking signal；The involution coil HHWJ-R of twin coil magnetic latching relay
It is connected by the coil of diode with the separating brake relay of described sub-gate circuit, including manual brake separating relay
Device STJ, remote control separating brake relay YTJ, trip protection relay TZJ and separating brake latch-in relay
TBJ.When described separating brake relay starts, involution coil HHWJ-R starts, and true on off state
Cell 15 sends the second marking signal.
Point position measure loop 52, including resistor and light every device.Light every one end of device U11 through described electricity
Resistance device current limliting is followed by operation power supply+KM, and the other end connects the coil of power switch 17.When described electricity
When power switch is in conjunction position, on off state, light determines that unit 15 sends the first status signal every device U11,
When described power switch is in point position, on off state, light determines that unit 15 sends second every device U11
Status signal.
On off state determines that described marking signal and described status signal are identified by unit 15, works as institute
State the closing relay indicated by marking signal and carry out action, and described indicated by described status signal
When the state of power switch is for dividing position, it is determined that 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, is sent out
Send abnormal indication signal.
As one preferred embodiment, the switch condition detection circuit of this protective relaying device also wraps
Include signal output loop 53.Signal output loop 53 determines that with on off state unit 15 is connected, and is used for
Receive described abnormal indication signal.Signal output loop 53 includes that light is every device U12 and early warning signal relay
Device YGJ, when signal output loop 53 receives described abnormal indication signal, light drives every device U12
Early warning signal relay YGJ action, thus can utilize early warning signal relay YGJ to realize reporting to the police
Function.
Specifically, relay HHWJ uses twin coil magnetic latching relay, and actuating coil HHWJ-S leads to
Cross diode and the coil SHJ.1 of four relays SHJ, CHJ, YHJ, HBJ of closing circuit, CHJ.1,
YHJ.1, HBJ.1 are connected.When any one in SHJ, YHJ, CHJ, HBJ starts, coil HHWJ-S
Start the most therewith, make contact 4～8 connect, determine that unit 15 sends a Ki3=1 on off state
Signal, the i.e. first marking signal；The involution coil HHWJ-R of relay HHWJ by diode with
The coil STJ.1 of four relays STJ, YTJ, TZJ, TBJ of sub-gate circuit, YTJ.1, TZJ.1,
TBJ.1 is connected.After relay HHWJ starts, if any one in STJ, YTJ, TZJ, TBJ opens
Dynamic, then coil HHWJ-R starts the most therewith, makes contact 4～8 disconnect, determines unit on off state
15 signals sending a Ki3=0, the i.e. second marking signal.
Point position measure loop 52 includes that resistor R20, R21, R22 and light are every device U11.Light is every U11
Primary one end be followed by positive source+KM through resistance R20 current limliting, the other end passes through binding post D07
Receive on the closing coil LC of power switch 17.When switch is in conjunction position, closing coil LC disconnects,
Loop is not turned on, and U11 level disconnects, and delivers on off state and determines that the signal of unit 15 is Ki4=0,
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, and U11 time level is connected, and delivers on off state and determines unit 15
Signal is Ki4=1, the i.e. second status signal.
On off state determines unit 15 judgement symbol signal Ki3 and the state of status signal Ki4, if going out
The situation of existing Ki3=1 and Ki4=1, i.e. closes under the state of position at the switch not receiving separating brake actuating signal
Detect that described switch becomes a point position state, then judge that on off state occurs abnormal, true on off state
Cell 15 sends on off state abnormal signal.
Now, on off state determines that unit 15 exports the control signal of Ko7=0, i.e. abnormal indication signal,
Early warning signal relay YGJ action is driven every U12 by light.The contact of early warning signal relay YGJ
An on off state abnormal indication signal is exported by terminal D15～D16.
This testing circuit be capable of the switch of protective relaying device carrying out manually, remote control, automatically or
Remotely etc. under multiple mode of operation, occur that switch operating mechanism fault causes abnormal tripping operation, causes anon-normal
During the change of normally opened off status, detect that improper on off state changes accurately and timely, be prevented effectively from
The things such as the open-phase operation that causes due to the exception of on off state, power failure range expansion, device damage
Therefore occur, improve power supply reliability.
Obviously, above-described embodiment is only for clearly demonstrating example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also all of embodiment being given
With exhaustive.And the obvious change thus extended out or variation are still in the guarantor of the invention
Protect among scope.
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, described
Closing relay carries out feed motion when receiving described switching signal；
Sub-gate circuit, including separating brake relay, described sub-gate circuit is used for receiving sub-gate signal, described
Separating brake relay carries out separating brake action when receiving described sub-gate signal；
Flag set loop, connects with the coil of the coil of described closing relay and described separating brake relay
Connect, respectively when described closing relay carries out action and when described separating brake relay carries out action, defeated
Go out different marking signals；
Divide position measure loop, be connected with the coil of power switch, be in conjunction at described power switch respectively
During the state of position and 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 of position measure loop connect, for sending described switching signal according to external input signal
With described sub-gate signal, it is additionally operable to receive described marking signal and described status signal, and according to described
Marking signal and described status signal determine that the state of described power switch is the most normal.
Circuit the most according to claim 1, it is characterised in that described on off state determines unit
When receiving the closing by hand signal of outside input, remote control switching signal, reclosing signal, send
Described switching signal；Described on off state determine unit receive outside input manual brake separating signal,
When remote control sub-gate signal, trip protection signal, send described sub-gate signal.
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 passes through light
Every determining closing by hand signal described in unit forwards to described on off state；
Closing by hand output sub-loop, for receiving the combined floodgate letter that described on off state determines that unit sends
Number, and by light 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
By light every forwarding described switching signal to remote control closing relay；
Reclosure loop reform, for receiving the switching signal that described on off state determines that unit sends, and leads to
Cross light every forwarding described switching signal to multiple switching relay；
Combined floodgate self-holding circuit, is connected with described power switch, carries out closing a floodgate at described power switch and moves
When making, start combined floodgate latch-in relay, until after closing a floodgate successfully, switching current disappears, make described
Combined floodgate latch-in relay returns.
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 opening to described
Off status determines manual brake separating signal described in unit forwards；
Manual brake separating output sub-loop, for receiving the separating brake letter that described on off state determines that unit sends
Number, and by light 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
By light every forwarding described sub-gate signal to remote control separating brake relay；
Trip protection loop, for receiving the sub-gate signal that described on off state determines that unit sends, and
By light every forwarding described sub-gate signal to trip protection relay；
Separating brake self-holding circuit, is connected with described power switch, carries out separating brake behaviour at described power switch
When making, start separating brake latch-in relay, until after separating brake success, separating brake current vanishes, make described
Separating brake latch-in relay returns.
Circuit the most according to claim 1, it is characterised in that described flag set loop includes
Twin coil magnetic latching relay, actuating coil HHWJ-S therein is by diode and described closing circuit
Closing relay coil be connected, when described closing relay starts, described actuating coil HHWJ-S
Start, and determine 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 returned with described separating brake by diode
The coil of the separating brake relay on road is connected, when described separating brake relay starts, and described involution coil
HHWJ-R starts, and determines that unit sends the second marking signal to described on off state.
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 electricity through described resistor current limiting every one end of device
Source, the other end connects the coil of described power switch, when described power switch is in conjunction position, described
To described on off state, light determines that unit sends the first status signal every device, when described power switch is in
When dividing position, to described on off state, described light determines that unit sends the second status signal every device.
Circuit the most according to claim 1, it is characterised in that described on off state determines unit
Described marking signal and described status signal are identified, when the combined floodgate indicated by described marking signal
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.
Circuit the most according to claim 1, it is characterised in that described on off state determines unit
It is additionally operable to judging that the state of described power switch, as time abnormal, sends 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 exception and refer to
Show signal, described signal output loop include light every device and early warning signal relay, when described signal is defeated
Going out loop when receiving described abnormal indication signal, described light drives described early warning signal relay every device
Action.
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| CN201610573095.5A CN106019137B (en) | 2016-07-19 | 2016-07-19 | A kind of switch condition detection circuit of protective relaying device |
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| CN201610573095.5A CN106019137B (en) | 2016-07-19 | 2016-07-19 | A kind of switch condition detection circuit of protective relaying device |
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| CN107332352A (en) * | 2017-08-28 | 2017-11-07 | 广东电网有限责任公司潮州供电局 | A kind of determination methods and device for switching non-three phase separating brake |
| CN109687385A (en) * | 2019-01-10 | 2019-04-26 | 中山市明阳电器有限公司 | A kind of control circuit of relay protection and high-pressure vacuum contactor cooperation |
| CN111856262A (en) * | 2020-07-16 | 2020-10-30 | 广东电网有限责任公司 | GIS disconnecting link detection method, device, system, equipment and storage medium |
| CN113447810A (en) * | 2021-06-29 | 2021-09-28 | 积成电子股份有限公司 | Device and method for realizing switching-on and switching-off operation detection and misoperation prevention of ring main unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109687385A (en) * | 2019-01-10 | 2019-04-26 | 中山市明阳电器有限公司 | A kind of control circuit of relay protection and high-pressure vacuum contactor cooperation |
| CN111856262A (en) * | 2020-07-16 | 2020-10-30 | 广东电网有限责任公司 | GIS disconnecting link detection method, device, system, equipment and storage medium |
| CN113447810A (en) * | 2021-06-29 | 2021-09-28 | 积成电子股份有限公司 | Device and method for realizing switching-on and switching-off operation detection and misoperation prevention of ring main unit |
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| CN106019137B (en) | 2018-07-27 |
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Denomination of invention: A switch state detection circuit for relay protection devices Effective date of registration: 20231227 Granted publication date: 20180727 Pledgee: Industrial and Commercial Bank of China Limited Yueqing sub branch Pledgor: NAHO ELECTRIC POWER TECHNOLOGY Co.,Ltd. Registration number: Y2023330003131 |
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