CN109193583A - A kind of internal bridge stub protection adaptively throws the safety control moved back - Google Patents
A kind of internal bridge stub protection adaptively throws the safety control moved back Download PDFInfo
- Publication number
- CN109193583A CN109193583A CN201811127817.XA CN201811127817A CN109193583A CN 109193583 A CN109193583 A CN 109193583A CN 201811127817 A CN201811127817 A CN 201811127817A CN 109193583 A CN109193583 A CN 109193583A
- Authority
- CN
- China
- Prior art keywords
- relay
- tcj
- contact
- normally closed
- isolation switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000004224 protection Effects 0.000 title claims abstract description 95
- 238000002955 isolation Methods 0.000 claims abstract description 58
- 238000012544 monitoring process Methods 0.000 claims description 43
- 230000033001 locomotion Effects 0.000 claims description 28
- 238000004804 winding Methods 0.000 claims description 20
- 230000005611 electricity Effects 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 239000002671 adjuvant Substances 0.000 claims description 2
- 238000003745 diagnosis Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 238000011017 operating method Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/263—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of measured values
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of internal bridge stub protections adaptively to throw the control circuit moved back; it include that isolation switch input control electric power loop, isolation switch weight motor type relay take electric control loop and stub protection adaptively to throw to move back control loop; this control circuit can prevent that the normally closed auxiliary contact of main transformer high-pressure side disconnecting switch and its secondary circuit mislead in operation or wrong diagnosis opens and stub protection miscarrying is caused to move back; meet remote operation control simultaneously to require, safety control circuit is increased to stub protection isolation switch open entry loop.
Description
Technical field
The present invention relates to a kind of safety control circuit, especially a kind of internal bridge stub protection adaptively throws the peace moved back
Full control device.
Background technique
In recent years, Full remote controlled business functionization is widelyd popularize in electric system, and remote control technology covers secondary device, in order to advise
Model secondary device remote operation, it is desirable that protection equipment remote control need to use soft remote control mode, the hard pressure in protection device context outlet
Plate and remote operation investment hard pressing plate by following principle should throw and moved back in investment position, defencive function hard pressing plate:
(1) require a distant place using throw move back soft pressing plate throw surrender shield, when soft or hard pressing plate be "AND" logic when, live function hard pressing plate
Always in investment position, when soft or hard pressing plate is "or" logic, live function hard pressing plate is releasing position always.
(2) claimed function follows outside to open automatically and moves back into contact variation throwing, opens when outside and presses firmly into contact with function
When plate is "or" logic, live hard pressing plate is releasing position always；Opening when outside into contact and function hard pressing plate is "AND" logic
When, live hard pressing plate is always in investment position.
Using defencive function follow automatically it is external open contact variation throw move back by the way of and we be commonly called as it is " adaptive
Answer " mode.Stub protection is exactly by the disconnecting link auxiliary normally closed contact automatic switching for drawing interval in power grid at present.
220 220 kilovolts of kv substation system main electrical schemes are expanded inter-bridge connection, and main electrical scheme is as shown in Figure 1, in order to mention
The reliability of high system power supply, when any main transformer stops labour maintenance, 220 kilovolts of systems still retain full mode and run, thus
220 kilovolts of system doublings are configured with 6 sets of stub protections, i.e., between 1DL and 3DL, between 3DL and 4DL, 2DL and 4DL it
Between respectively configure two sets of stub protections, corresponding stub protection is thrown automatically when each main transformer high-pressure side isolation switch Ge is disconnected
Enter.
When any main transformer body maintenance in scene, three side breaker of main transformer should be first disconnected, then disconnects the isolation of main transformer high-pressure side
Switch Ge that is, by disconnection 1Ge, 2Ge or 3Ge disconnecting switch, then restores 220 kilovolts of breakers operations, to realize maintenance master
220 kilovolts of systems is effectively isolated in becoming ontology and running.
220 kilovolts of stub protection open entry loops, as shown in Figure 2.Stub protection investment forces hard pressing plate and outside
Road is opened into and taken back to the normally closed auxiliary contact composition of main transformer high-side lead disconnecting switch, and normal operation LP1 function hard pressing plate is set disconnected
Open position.
Outside is opened into contact work using " adaptive " mode for following external knife switch secondary contact to throw surrender shield automatically
Make that reliability requirement is very high, there is greatly operation hidden danger in actual electric network operation using the discriminant approach of a single state contact
And risk, it needs just to be avoided that power networks risk using safety control measures.Mainly there are two aspects for operation risk at present:
Risk 1: when 220 kilovolts of system full modes are run, when main transformer also operates normally, any main transformer high-pressure side isolation in operation
It switchs normally closed auxiliary contact to open by mistake into (wrong diagnosis containing wiring or travel switch are accidentally closed), then automatically engages stub protection, at this time
The load current that 220 kilovolts of effluents of main transformer are crossed is exactly the spill current (being equivalent to short-term troubles inside the sample space) of stub protection, works as load
When electric current reaches stub protection spill current starting setting valve, then stub protection will malfunction, main transformer 220 in false tripping operation
Kilovolt breaker.
Risk 2: when 220 kilovolts of system full modes are run, and a certain main transformer body overhauls, the main transformer high-pressure side in operation
The normally closed auxiliary contact wrong diagnosis of disconnecting switch is opened and (is opened containing wiring loosening or travel switch wrong diagnosis), then may cause two sets of short legs and protect
Shield all automatically exits from, and will cause and stops using as a servant between corresponding 220 kilovolts of two breakers of main transformer without quick main protection operation, the section
It breaks down, by isolation of being tripped by the opposite side substation delay number route protection of two inlet wires of the substation, the change will be caused
220 kilovolts of power station system decompression even causes substation's full cut-off.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art places, and main transformer high pressure in operation can be prevented by providing one kind
The normally closed auxiliary contact of side disconnecting switch and its secondary circuit mislead or wrong diagnosis opens and stub protection miscarrying is caused to move back, and meet simultaneously
Remote operation control requires, and a kind of internal bridge for increasing safety control circuit to stub protection isolation switch open entry loop is short
Pilot protection adaptively throws the safety control moved back.
A kind of internal bridge stub protection adaptively throws the safety control moved back, includes isolation switch input control
Electric power loop, isolation switch weight motor type relay take electric control loop and stub protection adaptively to throw and move back control loop, described
Isolation switch input control electric power loop is to increase DC power supply in 220 kilovolts of stub protection screens to be spaced apart 1DK, and power supply is spaced apart
Input is spaced apart input power with stub protection power supply in screen and connects, and has also installed 1JJ and 2JJ power supply monitoring relay, electricity
The power loss signal of source control relay send monitoring system to monitor, 1JJ and 2JJ power supply monitoring relay is used for control loop ZJ
It is monitored with TCJ relay working power；
It includes ZJ relay that the described isolation switch weight motor type relay, which takes electric control loop, ZJ relay be electricity keep two-position after
Electric appliance, relay is there are two coil, and one is actuation coil ZJ-I, and one is involution coil ZJ-II, and electricity keeps two-position relay
Device only works in a state, monitors PT protective winding secondary voltage 1YJJ1(AB phase) and 1YJJ2(BC phase) relay
1YJJ1,1YJJ2 normally closed contact and monitoring PT measure winding secondary voltage 2YJJ1(AB phase) and 2YJJ2(BC phase) relay
2YJJ1,2YJJ2 normally closed contact concatenate starting ZJ relay and take electrical circuit, monitor PT protective winding secondary voltage 1YJJ1(AB
Phase) and 1YJJ2(BC phase) relay 1YJJ1,1YJJ2 normal opened contact and monitoring PT measure winding secondary voltage 2YJJ1(AB
Phase) and 2YJJ2(BC phase) relay the normal normal opened contact of 2YJJ1,2YJJ2 and connect starting ZJ relay power-off circuit, straight
When galvanic electricity source works normally, which is controlled by two coil outer input contacts, when the corresponding open circuit of short leg
When corresponding segment bus is without pressure when device stops using as a servant, PT protective winding secondary voltage 1YJJ1(AB phase is monitored) and 1YJJ2(BC phase) relay
Equal low pressure movement, 1YJJ1,1YJJ2 normally closed contact are connected, and 1YJJ1,1YJJ2 normal opened contact disconnect, and monitoring PT measure winding is secondary
Voltage 2YJJ1(AB phase) and 2YJJ2(BC phase) the equal low-voltage of relay, the connection of 2YJJ1,2YJJ2 normally closed contact, 2YJJ1,
2YJJ2 normal opened contact disconnects, and drives ZJ actuating of relay coil motion, ZJ normal opened contact closure at this time, and ZJ normally closed contact disconnects,
It has connected isolation switch magnetic and has kept two-position weight motor type relay TCJ work negative supply, while having been sent in the movement of ZJ power on signal public
Measure and control device, under the working condition when distant splice grafting point has disconnected, and distant tapping point is not closed, relay remains at movement
State, when short leg corresponds to breaker closing, corresponding segment bus is charged, 1YJJ1,1YJJ2,2YJJ1 and 2YJJ2 relay
There is pressure to return, 1YJJ1,1YJJ2,2YJJ1,2YJJ2 normal opened contact are connected, and 1YJJ1,1YJJ2,2YJJ1,2YJJ2 are normally closed to be connect
Point disconnects, and drives ZJ relay involution coil motion, and ZJ normal opened contact disconnects, and the conducting of ZJ normally closed contact is disconnected relay TCJ
Work negative supply, while sending public measure and control device in the movement of ZJ power-off signal, when distant tapping point has disconnected under the working condition, and
When distant splice grafting point is not closed, relay remains at involution state, when emerged in operation DC supply interruption, relay two
A equal power loss involution of coil is disconnected relay TCJ work negative supply
The stub protection is adaptively thrown and moves back control loop: setting including main transformer high-pressure side isolation switch Ge unit normally closed auxiliary
Adjuvant grafting point also adds Ge switch mechanism case to the normally opened auxiliary contact input in protection room, magnetic is respectively started, two-position is kept to move again
Relay TCJ and unit set weight motor type relay 1YQJ, 2YQJ, and relay TCJ is for controlling external input auxiliary contact, relay
TCJ contact is used to open as stub protection into criterion；Relay 1YQJ, 2YQJ input contact state and secondary to isolation switch
The carry out real-time monitoring in circuit, magnetic keep two-position weight motor type relay TCJ there are two coil, and one is actuation coil TCJ-I, and one
A is involution coil TCJ-II, and magnetic keeps two-position relay only to work in a state, and former work is kept under power blackout situation
State is constant, and when DC power supply works normally, magnetic keeps two-position relay working condition to be connect by two coil outer inputs
Point control, when main transformer high-pressure side isolation switch Ge normally opened auxiliary contact closure, normally closed auxiliary contact disconnect, drive at this time TCJ after
The movement of electric appliance actuation coil, TCJ normally closed contact disconnect, and stub protection is not put into, and signal does not send monitoring system, when main transformer height
It presses the normally opened auxiliary contact of side isolation switch Ge to disconnect, normally closed auxiliary contact closure, drives TCJ relay involution coil dynamic at this time
Make, TCJ normally closed contact closure, stub protection investment, TCJ keeps signal to be sent to monitoring system monitoring.Relay 1YQJ,
2YQJ respectively to the normally opened auxiliary contact of main transformer high-pressure side isolation switch and normally closed auxiliary contact input state and secondary circuit into
Row real-time monitoring, when the normally opened auxiliary contact of isolation switch Ge is closed, 1YQJ movement, 1YQJ is returned when the normally opened auxiliary contact of Ge disconnects
It returns；When the normally closed auxiliary contact of isolation switch Ge is closed, 2YQJ movement, 2YQJ is returned when the normally closed auxiliary contact of Ge disconnects, two weights
Moving again for motor type relay send monitoring system to monitor on signal.
In summary, the present invention following advantage compared with prior art:
The present invention moves magnetic guarantor by accessing main transformer high-pressure side disconnecting switch two-position in stub protection On-off signal circuit again
The contact of relay is held, magnetic latching relay is moved in two-position again, and by external isolation switch, normally opened, normally closed auxiliary contact is directly driven,
This measure can prevent the single normally closed auxiliary contact of the prior art and circuit mislead or wrong diagnosis convince by patient analysis cause stub protection miscarrying
It moves back.On the basis of using two-position weight motor type relay, isolation switch is normally opened in operational process in order to prevent, normally closed auxiliary contact
There is working condition mistake simultaneously and protection miscarrying is caused to be moved back, devises control taking for weight motor type relay working power herein
Electrical circuit takes electrical circuit to correspond to the voltage condition of bus section, busbar section according to stub protection to determine to take electric two-position electricity guard relay
Working condition only can carry out stub protection under bus passive state throwing and move back, and reliable disconnect of bus electrification is moved again when operation
The working power of relay, avoiding in operation maloperation or disconnecting link state, accidentally overturning may cause protection miscarrying and move back, securely and reliably
Realization moves back operation to the throwing of stub protection, while meeting remote operation self adaptive control requirement, when protection dual configuration configuration,
Its control circuit is also double set configurations, herein only by taking wherein a set of control circuit as an example.
Detailed description of the invention
Fig. 1 is that 220 kv substation, 220 kilovolts of systems of the prior art are bridge main electrical scheme in expanding.
Fig. 2 is that electric operation control circuit figure is moved back in 220 kilovolts of short legs throwing of the prior art.
Fig. 3 is that electric operation control circuit figure is moved back in short leg throwing of the invention.
Specific embodiment
The present invention is described in more detail below with reference to embodiment.
Embodiment 1
A kind of internal bridge stub protection adaptively throws the safety control moved back, includes isolation switch input control power supply
Circuit, isolation switch weight motor type relay take electric control loop and stub protection adaptively to throw and move back control loop.
(1) isolation switch input control electric power loop: increase DC power supply in 220 kilovolts of stub protection screens and be spaced apart
1DK, power supply are spaced apart input and are spaced apart input power with stub protection power supply in screen and connect, which is mainly that isolation switch is defeated
Entry loop provides control power supply.Simultaneously in order to realize that control loop ZJ and TCJ relay working power monitors, install respectively
1JJ and 2JJ power supply monitoring relay, power loss signal send monitoring system to monitor.
(2) isolation switch weight motor type relay takes electric control loop: mechanism case extremely protects the disconnecting link of room in running in order to prevent
Normally opened, normally closed auxiliary contact misleads cause simultaneously or wrong diagnosis is opened, and increases the control loop that isolation switch weight motor type relay takes electricity.ZJ
Relay keeps weight motor type relay to take electricity for controlling isolation switch magnetic, which is that electricity keeps two-position relay, relay
Device is there are two coil, and one is actuation coil ZJ-I, and one is involution coil ZJ-II, and electricity keeps two-position relay only to work
In a state, when DC power supply works normally, which is controlled by two coil outer input contacts, when
Short leg correspond to breaker stop labour when corresponding segment bus without pressure when, monitor PT protective winding secondary voltage 1YJJ1(AB phase) and
1YJJ2(BC phase) the equal low pressure movement of relay, the connection of 1YJJ1,1YJJ2 normally closed contact, the disconnection of 1YJJ1,1YJJ2 normal opened contact,
Monitor PT measure winding secondary voltage 2YJJ1(AB phase) and 2YJJ2(BC phase) the equal low-voltage of relay, 2YJJ1,2YJJ2 are normal
Contact is closed, 2YJJ1,2YJJ2 normal opened contact disconnect, and drive ZJ actuating of relay coil motion at this time, and ZJ normal opened contact closes
It closes, ZJ normally closed contact disconnects, and has connected isolation switch magnetic and has kept two-position weight motor type relay TCJ work negative supply, while on ZJ
Public measure and control device is sent in electric signal movement, under the working condition when distant splice grafting point has disconnected, and distant tapping point is not closed, after
Electric appliance remains at action state.When short leg corresponds to breaker closing, corresponding segment bus is charged, 1YJJ1,1YJJ2,
2YJJ1 and 2YJJ2 relay has pressure to return, and 1YJJ1,1YJJ2,2YJJ1,2YJJ2 normal opened contact are connected, 1YJJ1,1YJJ2,
2YJJ1,2YJJ2 normally closed contact disconnect, and drive ZJ relay involution coil motion at this time, and ZJ normal opened contact disconnects, and ZJ is normally closed to be connect
Point conducting is disconnected relay TCJ work negative supply, while sending public measure and control device in the movement of ZJ power-off signal, the work shape
Under state when distant tapping point has disconnected, and distant splice grafting point is not closed, relay remains at involution state.Work as emerged in operation
When DC supply interruption, the equal power loss involution of two coils of relay is disconnected relay TCJ work negative supply.
When to ensure that stub protection corresponds to bus section, busbar section without pressure, in the case of corresponding each equal decompression of winding secondary voltage of bus PT
Could execute ZJ relay take it is electrically operated, thus using protection, measure winding control relay all normally closed contacts concatenation open
Dynamic ZJ relay takes electrical circuit.When on the other hand to ensure that stub protection corresponds to bus section, busbar section electrification, to prevent corresponding segment bus
When PT relay control relay occurs abnormal, remain to reliably execute ZJ relay power operation, thus using protect, metering around
All normal opened contacts of group control relay simultaneously connect starting ZJ relay power-off circuit.
(3) stub protection is adaptively thrown and moves back control loop: stub protection original open entry loop is using main transformer high pressure
The normally closed auxiliary contact that side isolation switch Ge unit is set, this programme are that Ge switch mechanism case is increased on the basis of original to protection
Room normally opened auxiliary contact input, be respectively started magnetic keep two-position weight motor type relay TCJ and unit set weight motor type relay 1YQJ,
2YQJ, wherein relay TCJ is for controlling external input auxiliary contact, relay tip be used to open as stub protection into
Criterion；Relay 1YQJ, 2YQJ input the carry out real-time monitoring of contact state and secondary circuit to isolation switch.Magnetic keeps dibit
Weight motor type relay TCJ is set there are two coil, one is actuation coil TCJ-I, and one is involution coil TCJ-II, and magnetic keeps dibit
It sets relay only to work in a state, and keeps former working condition constant under power blackout situation, this is to keep two-position with electricity
The maximum difference of relay.When DC power supply works normally, which inputs contact by two coil outers
Control drives TCJ relay when the normally opened auxiliary contact closure of main transformer high-pressure side isolation switch Ge, the disconnection of normally closed auxiliary contact at this time
The movement of device actuation coil, TCJ normally closed contact disconnect, and stub protection is not put into, and signal does not send monitoring system.When main transformer high pressure
Isolation switch Ge normally opened auxiliary contact in side disconnects, normally closed auxiliary contact is closed, and drives TCJ relay involution coil motion at this time,
TCJ normally closed contact closure, stub protection investment, TCJ keep signal to be sent to monitoring system monitoring.Relay 1YQJ, 2YQJ
It is real to the progress of the normally opened auxiliary contact of main transformer high-pressure side isolation switch and normally closed auxiliary contact input state and secondary circuit respectively
When monitor, when isolation switch Ge normally opened auxiliary contact closure, 1YQJ movement, 1YQJ is returned when the normally opened auxiliary contact of Ge disconnects；Every
When auxiliary contact closure normally closed from disconnecting link Ge, 2YQJ movement, 2YQJ is returned when the normally closed auxiliary contact of Ge disconnects, and two are moved relay again
Moving again for device send monitoring system to monitor on signal, it can be found that the abnormal shape of its auxiliary contact and secondary circuit when normal operation
State.
When regulation personnel or operation maintenance personnel, which receive, needs altering system method of operation operational order, Awaiting Overhaul is disconnected
Or each side breaker of investment main transformer is waited, stub protection drives the ZJ actuating of relay after corresponding to bus section, busbar section decompression, passes through monitoring
" TCJ is powered on " signal of system confirms ZJ relay action message, connects TCJ negative supply, when by changing system operation mode
It completes after disconnecting or closing Ge switch operation, it is whether correct by 1YQJ and 2YQJ real-time monitoring Ge auxiliary contact state, at this time
The appearance normally opened auxiliary contact of Ge and normal auxiliary contact disconnect, closure or relay status and reality be not corresponding, can pass through prison
" the non-holding of 1YQJ, 2YQJ " signal acknowledgement state of control system, if the incorrect accidentally driving TCJ relay of state, because at this time
Corresponding breaker is also not carried out closing operation, even if to move back state incorrect for stub protection throwing, will not cause false protection
Make, thus should notify that service personnel carries out inspection processing to abnormal subsidiary loop immediately, handles normal rear by monitoring system " Ge
Normally closed heavy dynamic (magnetic holding) " signal confirms TCJ relay working condition, while checking that the protection of short-term line is opened and confirming protection into displacement
Throwing moves back whether meet actual operating, moves back correctly to judge whether protection throws, after confirmation correctly.When short leg is closed in execution
Bus section, busbar section electrification is corresponded to when protecting corresponding breaker operator, is driven the involution of ZJ relay, is passed through " the TCJ power-off " of monitoring system
Signal confirms the reliable involution of ZJ relay, and returned by " the non-holding of 1YQJ, 2YQJ " signal of monitoring system and 2JJ after
Electric appliance " alarm of direct current power loss " signal confirmation TCJ relay negative supply reliably disconnects, and TCJ relay no longer receives external at this time
Ge auxiliary contact accidentally will not cause short leg in operation to protect by driving TCJ relay even if auxiliary contact status error in operation
Shield miscarrying is moved back, and is safely and effectively guaranteed that stub protection is reliably thrown and is moved back, and not will cause protection in operation and is refused malfunction.Pass through above-mentioned behaviour
Operation is moved back in the adaptive throwing made and securely and reliably complete a stub protection, if system operation mode becomes again
Change, short leg inlet wire need to be thrown next time and move back operation, operating procedure is same as above.
When a main website distant place executes programming operations, by switch, disconnecting link displacement information and operation in each operating procedure
It corresponds to signal intensity confirmation in the process to be included in sequence operation ticket, operating process automatically tracks corresponding letter according to equipment state variation
Number, information change to judge whether to execute next operating procedure be not necessarily to manpower intervention, to fast and safely be reliably completed primary
The interior bridge method of operation changes and the operation task of stub protection automatic switching.
The description of Fig. 3 circuit connecting relation:
(1) isolation switch input control electric power loop: increasing DC power supply in 220 kilovolts of stub protection screens and be spaced apart 1DK, empty
Switch power supply in screen and connects with stub protection power supply, which is mainly that isolation switch input and control loop provide power supply.
Power supply monitoring relay 1JJ, which is connected to, takes electric control relay ZJ electric power loop, and power supply monitoring relay 2JJ is connected to position weight
Dynamic guard relay TCJ electric power loop, relay coil are just terminated at positive power source terminal, and coil negative terminal is connected to negative power end, respectively
ZJ TCJ relay working power state is monitored, when there is the disappearance of corresponding segment power supply, 1JJ, 2JJ relay power power loss contact hair
Monitoring system is sent to remind prison disk personnel.
(2) isolation switch weight motor type relay takes electric control loop:
The disconnecting link of mechanism case to protection room is normally opened in operation in order to prevent, normally closed auxiliary contact misleads cause simultaneously or wrong diagnosis is opened, and increases
Isolation switch weight motor type relay has been added to take the control loop of electricity.Take that the starting-up later time of electric control loop accesses is short for monitoring
Pilot protection corresponds to the concatenation normally closed contact of bus section, busbar section PT protection and metered voltage winding voltage control relay, control relay
1YJJ1,1YJJ2,2YJJ1,2YJJ2 are connected to protection and metered voltage winding AB phase and BC phase respectively to be owned when bus is without pressure
Winding secondary voltage is all closed without output, four relay normally closed contacts, and starting takes electric control two-position electricity guard relay ZJ
Actuation coil, the ZJ actuating of relay, ZJ normal opened contact on-position weight motor type relay TCJ negative supply.When bus has pressure, protect
Shield, metered voltage winding have output voltage, and any relay normally open contact closure, then starting takes electric control two-position relay
The involution coil of ZJ, ZJ relay return, and ZJ normal opened contact disconnects the negative supply of TCJ relay.ZJ relay normally open contact hair
Monitoring system is sent to remind prison disk personnel.When in operation if there is direct current power loss, electric guard relay ZJ is returned, ZJ normal opened contact
TCJ relay negative supply is disconnected, stub protection throwing can not be carried out at this time and move back operation, can continue to grasp after abnormality processing is normal
Make.Stub protection, which corresponds to bus section, busbar section, to be had pressure or without pressure, characterizes primary equipment actual motion state, is only stopped in corresponding breaker
When labour, operation is moved back in the throwing that just can be carried out stub protection when bus is without pressure, bus have when pressure at this time primary system in running shape
Operation is moved back in state, the throwing that can not carry out stub protection, and prevents stub protection in operational process from miscarrying the important measures moved back.
(1) stub protection is adaptively thrown and moves back control loop:
Normally closed auxiliary contact or secondary is set to prevent stub protection open entry loop from accessing main transformer high-pressure side isolation switch Ge unit
Misleading is moved back in circuit operation or operation or wrong diagnosis is opened, and stub protection miscarrying is caused to move back.This programme is using access isolation switch
The normally closed and normally open auxiliary contact in the two-position Ge, after taking electric control relay ZJ movement to connect negative supply, when isolation switch Ge is disconnected
When opening, normally opened auxiliary contact is disconnected, and normally closed auxiliary contact is connected while starting the actuating wire that magnetic latching relay TCJ is moved in position again
Circle and unit set weight motor type relay 1YQJ, TCJ and 1YQJ relay acts, and two relay normally open contacts are both turned on, TCJ mono-
Secondary contact is opened into stub protection, i.e. investment stub protection, and protection, which is opened, passes through soft message up sending monitoring system into displacement information
System, another secondary contact of TCJ and 1YQJ contact are also sent to monitoring system and remind prison disk personnel.When isolation switch Ge closes a floodgate, often
Auxiliary contact disconnection is closed, normally opened auxiliary contact is connected while starting the involution coil and list that magnetic latching relay TCJ is moved in position again
Position weight motor type relay 2YQJ, the return of TCJ relay, the 2YQJ actuating of relay, TCJ normal opened contact disconnect, that is, are disconnected to short draw
Line protection is opened into exiting stub protection, corresponding protection is opened into displacement information through soft message up sending monitoring system, and 2YQJ is normal
It opens contact and is sent to monitoring system prompting prison disk personnel.During short leg throwing is moved back (i.e. TCJ negative supply obtains the electric stage), if gone out
Existing isolation switch Ge is normally opened, normally closed auxiliary contact location status and when inconsistent primary equipment virtual condition, by TCJ with
The verifiable corresponding equipment state of 1YQJ, 2YQJ can carry out down after service personnel should be notified to eliminate live exception in time at this time
Single stepping.During short leg puts into or is out of service (i.e. TCJ negative supply power loss stage), if there is isolation switch Ge
When normally opened, normally closed auxiliary contact location status and inconsistent primary equipment virtual condition, is verified correspond to by 1YQJ, 2YQJ at this time
Equipment state reinforms service personnel and is disposed to abnormal, will not influence stub protection throwing under this state and moves back.Operational process
In when there is DC power supply power loss, will not influence TCJ magnetic latching relay working condition, not will cause the miscarrying of stub protection
It moves back.
The not described part of the present embodiment is same as the prior art.
Claims (1)
1. a kind of internal bridge stub protection adaptively throws the safety control moved back, it is characterised in that: include isolation knife
Lock input control electric power loop, isolation switch weight motor type relay take electric control loop and stub protection adaptively to throw to move back and control back
Road, the isolation switch input control electric power loop are to increase DC power supply in 220 kilovolts of stub protection screens to be spaced apart
1DK, power supply are spaced apart input and are spaced apart input power with stub protection power supply in screen and connect, and have also installed 1JJ and 2JJ power supply prison
Relay is surveyed, the power loss signal of power supply monitoring relay send monitoring system to monitor, 1JJ and 2JJ power supply monitoring relay is used
It is monitored in control loop ZJ and TCJ relay working power；
It includes ZJ relay that the described isolation switch weight motor type relay, which takes electric control loop, ZJ relay be electricity keep two-position after
Electric appliance, relay is there are two coil, and one is actuation coil ZJ-I, and one is involution coil ZJ-II, and electricity keeps two-position relay
Device only works in a state, monitor PT protective winding secondary voltage 1YJJ1AB phase and 1YJJ2BC phase relay 1YJJ1,
2YJJ1,2YJJ2 of 1YJJ2 normally closed contact and monitoring PT measure winding secondary voltage 2YJJ1AB phase and 2YJJ2BC phase relay
Normally closed contact concatenates starting ZJ relay and takes electrical circuit, monitors PT protective winding secondary voltage 1YJJ1AB phase and 1YJJ2BC phase
1YJJ1,1YJJ2 normal opened contact of relay and monitoring PT measure winding secondary voltage 2YJJ1AB phase and 2YJJ2BC phase relay
The normal normal opened contact of 2YJJ1,2YJJ2 and connect starting ZJ relay power-off circuit, DC power supply work normally when, the relay
Device working condition is by the input contacts control of two coil outers, when short leg correspond to when breaker stops using as a servant corresponding segment bus without pressure
When, PT protective winding secondary voltage 1YJJ1AB phase and the equal low pressure movement of 1YJJ2BC phase relay are monitored, 1YJJ1,1YJJ2 are normally closed
Contact, 1YJJ1,1YJJ2 normal opened contact disconnect, and monitor PT measure winding secondary voltage 2YJJ1AB phase and 2YJJ2BC is successive
The equal low-voltage of electric appliance, 2YJJ1,2YJJ2 normally closed contact are connected, and 2YJJ1,2YJJ2 normal opened contact disconnect, and drive ZJ relay at this time
Device actuation coil movement, ZJ normal opened contact closure, ZJ normally closed contact disconnect, connected isolation switch magnetic keep two-position again move after
Electric appliance TCJ work negative supply, while ZJ power on signal movement on send public measure and control device, under the working condition when distant splice grafting point
It disconnects, and when distant tapping point is not closed, relay remains at action state, the correspondence when short leg correspond to breaker closing
When section bus electrification, 1YJJ1,1YJJ2,2YJJ1 and 2YJJ2 relay have pressure to return, 1YJJ1,1YJJ2,2YJJ1,2YJJ2
Normal opened contact is connected, and 1YJJ1,1YJJ2,2YJJ1,2YJJ2 normally closed contact disconnect, and drives ZJ relay involution coil motion, ZJ
Normal opened contact disconnects, the conducting of ZJ normally closed contact, is disconnected relay TCJ work negative supply, while sending in the movement of ZJ power-off signal
Public measure and control device, under the working condition when distant tapping point has disconnected, and distant splice grafting point is not closed, relay is remained at
Involution state, when emerged in operation DC supply interruption, the equal power loss involution of two coils of relay is disconnected relay TCJ
Work negative supply
The stub protection is adaptively thrown and moves back control loop: setting including main transformer high-pressure side isolation switch Ge unit normally closed auxiliary
Adjuvant grafting point also adds Ge switch mechanism case to the normally opened auxiliary contact input in protection room, magnetic is respectively started, two-position is kept to move again
Relay TCJ and unit set weight motor type relay 1YQJ, 2YQJ, and relay TCJ is for controlling external input auxiliary contact, relay
TCJ contact is used to open as stub protection into criterion；Relay 1YQJ, 2YQJ input contact state and secondary to isolation switch
The carry out real-time monitoring in circuit, magnetic keep two-position weight motor type relay TCJ there are two coil, and one is actuation coil TCJ-I, and one
A is involution coil TCJ-II, and magnetic keeps two-position relay only to work in a state, and former work is kept under power blackout situation
State is constant, and when DC power supply works normally, magnetic keeps two-position relay working condition to be connect by two coil outer inputs
Point control, when main transformer high-pressure side isolation switch Ge normally opened auxiliary contact closure, normally closed auxiliary contact disconnect, drive at this time TCJ after
The movement of electric appliance actuation coil, TCJ normally closed contact disconnect, and stub protection is not put into, and signal does not send monitoring system, when main transformer height
It presses the normally opened auxiliary contact of side isolation switch Ge to disconnect, normally closed auxiliary contact closure, drives TCJ relay involution coil dynamic at this time
To make, TCJ normally closed contact closure, stub protection investment, TCJ holding signal is sent to monitoring system and monitors, relay 1YQJ,
2YQJ respectively to the normally opened auxiliary contact of main transformer high-pressure side isolation switch and normally closed auxiliary contact input state and secondary circuit into
Row real-time monitoring, when the normally opened auxiliary contact of isolation switch Ge is closed, 1YQJ movement, 1YQJ is returned when the normally opened auxiliary contact of Ge disconnects
It returns；When the normally closed auxiliary contact of isolation switch Ge is closed, 2YQJ movement, 2YQJ is returned when the normally closed auxiliary contact of Ge disconnects, two weights
Moving again for motor type relay send monitoring system to monitor on signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811127817.XA CN109193583B (en) | 2018-09-27 | 2018-09-27 | Control circuit for self-adaptive switching of inner bridge connection short lead protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811127817.XA CN109193583B (en) | 2018-09-27 | 2018-09-27 | Control circuit for self-adaptive switching of inner bridge connection short lead protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109193583A true CN109193583A (en) | 2019-01-11 |
| CN109193583B CN109193583B (en) | 2024-03-26 |
Family
ID=64907266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811127817.XA Active CN109193583B (en) | 2018-09-27 | 2018-09-27 | Control circuit for self-adaptive switching of inner bridge connection short lead protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109193583B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111641194A (en) * | 2020-05-21 | 2020-09-08 | 南京国电南自电网自动化有限公司 | Circuit breaker protection device and method integrating short lead protection |
| CN115273361A (en) * | 2022-07-26 | 2022-11-01 | 中国南方电网有限责任公司超高压输电公司昆明局 | Misoperation monitoring method and device of air switch and computer equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08212880A (en) * | 1995-02-09 | 1996-08-20 | Meidensha Corp | Control circuit for circuit breaker |
| CN102436971A (en) * | 2011-04-27 | 2012-05-02 | 上海市电力公司 | Remote control on-off reclosing relay |
| CN104319889A (en) * | 2014-10-29 | 2015-01-28 | 国网河南省电力公司商丘供电公司 | Automatic throwing and exiting method for achieving protection along with operation of neutral point isolating switch |
| CN104332865A (en) * | 2014-07-01 | 2015-02-04 | 国家电网公司 | Typical wiring method for intelligent transformer station |
| CN105186451A (en) * | 2015-08-27 | 2015-12-23 | 南京国电南自电网自动化有限公司 | Inrush current lock self-adaptive switching method for earth fault in valve side region of converter transformer |
| CN209358241U (en) * | 2018-09-27 | 2019-09-06 | 国网福建省电力有限公司泉州供电公司 | A kind of internal bridge stub protection adaptively throws the control circuit moved back |
-
2018
- 2018-09-27 CN CN201811127817.XA patent/CN109193583B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08212880A (en) * | 1995-02-09 | 1996-08-20 | Meidensha Corp | Control circuit for circuit breaker |
| CN102436971A (en) * | 2011-04-27 | 2012-05-02 | 上海市电力公司 | Remote control on-off reclosing relay |
| CN104332865A (en) * | 2014-07-01 | 2015-02-04 | 国家电网公司 | Typical wiring method for intelligent transformer station |
| CN104319889A (en) * | 2014-10-29 | 2015-01-28 | 国网河南省电力公司商丘供电公司 | Automatic throwing and exiting method for achieving protection along with operation of neutral point isolating switch |
| CN105186451A (en) * | 2015-08-27 | 2015-12-23 | 南京国电南自电网自动化有限公司 | Inrush current lock self-adaptive switching method for earth fault in valve side region of converter transformer |
| CN209358241U (en) * | 2018-09-27 | 2019-09-06 | 国网福建省电力有限公司泉州供电公司 | A kind of internal bridge stub protection adaptively throws the control circuit moved back |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111641194A (en) * | 2020-05-21 | 2020-09-08 | 南京国电南自电网自动化有限公司 | Circuit breaker protection device and method integrating short lead protection |
| CN115273361A (en) * | 2022-07-26 | 2022-11-01 | 中国南方电网有限责任公司超高压输电公司昆明局 | Misoperation monitoring method and device of air switch and computer equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109193583B (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103023000A (en) | Power grid current limiting device, power grid current limiter and power grid current limiting system | |
| CN109193583A (en) | A kind of internal bridge stub protection adaptively throws the safety control moved back | |
| CN110988665B (en) | Abnormal alarm method for closing function of spring type circuit breaker | |
| CN201549868U (en) | Low-voltage switch intelligent controller | |
| CN108879965A (en) | A kind of substation isolating-switch motor power long-range control method | |
| CN209358241U (en) | A kind of internal bridge stub protection adaptively throws the control circuit moved back | |
| CN103837826B (en) | High-voltage switch gear operation circuit fault zone identification system and method | |
| CN109036909A (en) | The GIS electrical equipment disconnecting link motor power control loop of novel 220kV | |
| CN106711970B (en) | A kind of THE UPFC switch failure guard method containing series transformer | |
| CN219697294U (en) | Back-to-back working condition magnetic switch opening circuit of pumping and storage unit | |
| CN107294202A (en) | A kind of power distribution control circuit method and device | |
| CN103941155B (en) | High-voltage switch gear control loop template domain identification circuit and discrimination method | |
| CN110473724A (en) | A kind of automatic three-phase control system of medium voltage electricity switch | |
| CN105471095B (en) | A kind of low-voltage alternating-current looped network ring current monitoring method | |
| CN208001183U (en) | Backup auto-activating device and system | |
| CN108781046A (en) | Motor starter and diagnostic method | |
| CN110492597A (en) | Fault-safety principle device, Electrical Safety system and prepared auto restart interlock control | |
| CN201540480U (en) | Remote control device for substation illumination and fan systems | |
| CN111262222A (en) | Intelligent reclosing control system | |
| CN212572094U (en) | Generator synchronous grid-connected closing loop for preventing asynchronous closing | |
| CN218678427U (en) | Generator de-excitation loop | |
| CN214542947U (en) | Matching circuit of switching-on and switching-off monitoring loop of imported GCB control cabinet and domestic operation box | |
| CN104377649A (en) | Automatic switching method of transformer neutral grounding knife-switch | |
| CN112701589B (en) | Circuit breaker cabinet | |
| CN209448324U (en) | The Anti-jump Circuit of Breaker of GIS combination electric appliance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |