CN103837826B - High-voltage switch gear operation circuit fault zone identification system and method - Google Patents
High-voltage switch gear operation circuit fault zone identification system and method Download PDFInfo
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- CN103837826B CN103837826B CN201410101379.5A CN201410101379A CN103837826B CN 103837826 B CN103837826 B CN 103837826B CN 201410101379 A CN201410101379 A CN 201410101379A CN 103837826 B CN103837826 B CN 103837826B
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Abstract
The invention discloses a kind of high-voltage switch gear operation circuit fault zone identification system and method, it includes switching manipulation loop, signal circuit, monitor terminal and long-range master station, by increasing fault generation diagnostic circuit and fault zone diagnostic circuit in switching manipulation loop, whether break down and fault generation area with diagnosis switching manipulation loop, produced and show fault zone signal by signal circuit, and fault zone identification result signal is uploaded to long-range master station by monitor terminal；Fault generation diagnostic circuit is contacted by the auxiliary contact and fault zone diagnostic circuit controlling relay, fault zone diagnostic circuit contacts by controlling relay, combined floodgate supervisory relay, their auxiliary contact of separating brake supervisory relay and signal circuit, to form switching manipulation loop fault domain identification action logic.This system is capable of the identification of fault zone, improves the first-aid repair efficiency of faulty line, saves repairing labour force, greatly reduces line load loss.
Description
Technical field
The present invention relates to a kind of high-voltage switch gear operation circuit fault zone identification system and method.
Background technology
The operation circuit of relay protection is to ensure that the important loop of power network safety operation, and relay protection height presses off
During closing operation circuit fault, if there is power grid accident, breaker fail protection, excision switch place will be started
Whole piece bus, cause huge load loss, uniquely can overcome the disadvantages that loss improves first-aid repair efficiency exactly, but
The most domestic lack effective technological means, it is impossible to distinguish high-voltage switch gear operation circuit fault quickly and accurately and occur
Particular location, therefore repairing processing procedure relate to two groups of professionals (switching manipulation loop protection area fault
Repairing professional and switch region breakdown repair professional) carry out coordinating and search fault zone, cause process
Time is long, inefficiency, expends bigger labour force.
Summary of the invention
The invention provides a kind of high-voltage switch gear operation circuit fault zone identification system and method, which overcome the back of the body
The deficiencies in the prior art described in scape technology.
One of present invention technical scheme used solving its technical problem is:
High-voltage switch gear operation circuit fault zone identification system, it includes:
Switching manipulation loop, this switching manipulation loop includes that closing circuit, sub-gate circuit, fault occur diagnosis electricity
Road and fault zone diagnostic circuit, this closing circuit and sub-gate circuit all include a switching mechanism, and this fault occurs
Diagnostic circuit includes having some control relays to normally opened auxiliary contact, and this fault zone diagnostic circuit includes
The most all there is some combined floodgate supervisory relays to normally opened auxiliary contact and normally closed auxiliary contact and separating brake monitors and continues
Electrical equipment；
For producing the signal circuit of the signal with display switch operation circuit fault zone, this signal circuit includes
Switch region fault signal circuit and protection zone fault signal circuit；
Monitor terminal and long-range master station, this signal circuit signal connects this monitor terminal, this monitor terminal net
Network signal connects this long-range master station；
This fault generation diagnostic circuit can contact this fault zone diagnosis electricity by the auxiliary contact of this control relay
Road also decides whether to allow this fault zone diagnostic circuit to carry out fault zone diagnosis, this fault zone diagnostic circuit
Contacting this signal circuit by the auxiliary contact of this combined floodgate supervisory relay and separating brake supervisory relay, this signal returns
Whether road turns on this faulty section of identification by switch region fault signal circuit and protection zone fault signal circuit
Territory, and this identification result is sent to this long-range master station by monitor terminal.
Among one embodiment: this closing circuit includes jumping position supervisory relay, this sub-gate circuit includes that closing position monitors
Relay, this conjunction position supervisory relay and jumping position supervisory relay the most at least have a pair normally closed auxiliary contact,
This fault generation diagnostic circuit includes the normally closed auxiliary contact closing position supervisory relay being connected in series, jumps position supervision
The normally closed auxiliary contact of relay and control relay；
This fault zone diagnostic circuit includes the region diagnostic circuit one being connected in closing circuit and is connected to separating brake
Region diagnostic circuit two in loop, this region diagnostic circuit one includes the two ends being connected in series in this switching mechanism
Combined floodgate supervisory relay, control relay the normally opened auxiliary contact of the first couple；This region diagnostic circuit two includes
It is connected in series in the separating brake supervisory relay at the two ends of this switching mechanism, controls the normally opened auxiliary of the second couple of relay
Contact.
Among one embodiment: this switching manipulation loop also includes the first power supply, this fault generation diagnostic circuit connects
At this first both ends of power.
Among one embodiment: this switching manipulation loop also includes second source, this fault generation diagnostic circuit selects
Be connected to this first both ends of power or second source two ends.
Among one embodiment: the combined floodgate supervisory relay that this switch region fault signal circuit includes being connected in series
First pair of normally opened auxiliary contact, the normally opened auxiliary contact of the first couple of separating brake supervisory relay；This protection zone fault
Signal circuit includes that the normally opened auxiliary contact of the second couple of combined floodgate supervisory relay being connected in series, separating brake monitor relay
First pair of normally closed auxiliary contact of device and the normally closed auxiliary of the first couple of combined floodgate supervisory relay being connected in series are touched
Point, the normally opened auxiliary contact of the second couple of separating brake supervisory relay, normally opened auxiliary is touched by the 3rd of this control relay
Point is connected in series this switch region fault signal circuit, protection zone fault signal circuit respectively.
Among one embodiment: also include the optocoupler for transmitting fault zone signal, this switch region fault
Signal circuit and protection zone fault signal circuit are connected in series this optocoupler respectively, and this optocoupler signal is even
Connect this monitor terminal.
Among one embodiment: the technical parameter of this conjunction position supervisory relay and the technical parameter of separating brake supervisory relay
Matching, the technical parameter of this jumping position supervisory relay matches with the technical parameter of combined floodgate supervisory relay.
The present invention solves the two of the technical scheme used of its technical problem:
High-voltage switch gear operation circuit fault zone based on one of scheme identification system, the event of high-voltage switch gear operation circuit
Barrier domain identification method includes:
When switching mechanism operation or switching mechanism stand-by heat, there is operation circuit switch region fault, then include:
Step 11, the jumping position supervisory relay in closing circuit, the conjunction position supervisory relay in sub-gate circuit all loses
Pressure is failure to actuate, closing position supervisory relay and jumping the normally closed auxiliary of position supervisory relay in this fault generation diagnostic circuit
Contact is helped to be in closure state and drive the control actuating of relay, and the normally opened auxiliary contact of this control relay
Guan Bi；
Step 12, the combined floodgate supervisory relay of this fault zone diagnostic circuit and separating brake supervisory relay action, its
Corresponding normally opened auxiliary contact Guan Bi, normally closed auxiliary contact disconnects；
Step 13, the switch region fault signal circuit of this signal circuit turns on and passes through monitor terminal to remotely prison
Control main website sends fault zone signal；
When switch runs, there is operation circuit protection zone fault, then include:
Step 21, the jumping position supervisory relay in closing circuit, the conjunction position supervisory relay in sub-gate circuit all loses
Pressure is failure to actuate, closing position supervisory relay and jumping the normally closed auxiliary of position supervisory relay in this fault generation diagnostic circuit
Contact is helped to be in closure state and drive the control actuating of relay, and the normally opened auxiliary contact of this control relay
Guan Bi；
Step 22, the combined floodgate supervisory relay action of this fault zone diagnostic circuit, the normally opened auxiliary of its correspondence is touched
Point Guan Bi, normally closed auxiliary contact disconnects, and separating brake supervisory relay is failure to actuate, the normally opened auxiliary contact of its correspondence,
Normally closed auxiliary contact keeps original state；
Step 23, the protection zone fault signal circuit of this signal circuit turns on and passes through monitor terminal to remotely prison
Control main website sends fault zone signal；
When switching mechanism is in stand-by heat (switch point position, will power transmission), generation operation circuit protection zone
Fault, then include:
Step 31, the jumping position supervisory relay in closing circuit, the conjunction position supervisory relay in sub-gate circuit all loses
Pressure is failure to actuate, closing position supervisory relay and jumping the normally closed auxiliary of position supervisory relay in this fault generation diagnostic circuit
Contact is helped to be in closure state and drive the control actuating of relay, and the normally opened auxiliary contact of this control relay
Guan Bi；
Step 32, the separating brake supervisory relay action of this fault zone diagnostic circuit, the normally opened auxiliary of its correspondence is touched
Point Guan Bi, normally closed auxiliary contact disconnects, and combined floodgate supervisory relay is failure to actuate, the normally opened auxiliary contact of its correspondence,
Normally closed auxiliary contact keeps original state；
Step 33, the protection zone fault signal circuit of this signal circuit turns on and passes through monitor terminal to remotely prison
Control main website sends fault zone signal；
The technical program is compared with background technology, and it has the advantage that
This circuit controls relay accordingly by installing in the closing circuit in switching manipulation loop and sub-gate circuit
Device, combined floodgate supervisory relay and separating brake supervisory relay, using their auxiliary contact as signal transfer medium,
Realize the automatic identification of switching manipulation circuit switching area fault and protection zone fault, according to this fault zone
Identification result, only needs the repair personnel setting out corresponding failure region to rob during conducting transmission line breakdown repair
Repair, decrease the consuming of labour force, also improve first-aid repair efficiency, thus reduce load loss.
Accompanying drawing explanation
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 depicts the closing circuit schematic diagram in the A phase switching manipulation loop of the present embodiment one.
Fig. 2 depicts the first sub-gate circuit schematic diagram in the A phase switching manipulation loop of the present embodiment one.
Fig. 3 depicts the second sub-gate circuit schematic diagram in the A phase switching manipulation loop of the present embodiment one.
Fig. 4 depicts the first signal circuit schematic diagram of the present embodiment one.
Fig. 5 depicts the secondary signal circuit diagram of the present embodiment one.
Fig. 6 depicts the connection diagram of fault generation diagnostic circuit in the present embodiment one.
Fig. 7 depicts the overall schematic of high-voltage switch gear operation circuit fault zone identification system.
Fig. 8 depicts the closing circuit in switching manipulation loop in the present embodiment two, sub-gate circuit and fault and occurs
Diagnostic circuit connection diagram.
Fig. 9 depicts the signal circuit schematic diagram in the present embodiment two.
Detailed description of the invention
Refer to Fig. 1 to Fig. 9:
Refer to Fig. 7, high-voltage switch gear operation circuit fault zone identification system, it includes:
Switching manipulation loop, including closing circuit, sub-gate circuit and switching mechanism, this switching manipulation loop is also wrapped
Include to have and control the fault generation diagnostic circuit of relay and there is combined floodgate supervisory relay, separating brake supervisory relay
Fault zone diagnostic circuit, this control relay has some to normally opened auxiliary contact, this combined floodgate monitor relay
Device and separating brake supervisory relay the most all have some to normally opened auxiliary contact with at least one pair of normally closed auxiliary contact；
For producing the signal circuit of the signal with display switch operation circuit fault zone, the signal circuit bag being somebody's turn to do
Include switch region fault signal circuit and protection zone fault signal circuit；
Monitor terminal 3 and long-range master station 4, this signal circuit signal connects this monitor terminal, and this monitoring is eventually
End network signal connects this long-range master station；
This fault generation diagnostic circuit can contact this fault zone diagnosis electricity by the auxiliary contact of this control relay
Road also decides whether to allow this fault zone diagnostic circuit to carry out fault zone diagnosis, this fault zone diagnostic circuit
Contacting this signal circuit by the auxiliary contact of this combined floodgate supervisory relay and separating brake supervisory relay, this signal returns
Whether road turns on this faulty section of identification by switch region fault signal circuit and protection zone fault signal circuit
Territory, and this identification result is sent to this long-range master station by monitor terminal
This fault zone includes switch region 1 and protection zone 2, and this switch region 1 includes this switching mechanism,
This protection zone 2 includes the switching manipulation loop feature in addition to this switching mechanism
Embodiment one, refer to Fig. 1 to Fig. 6:
For the switching manipulation loop of 220kV and above, this three-phase line A, B, C phase each
Distinguish corresponding A, the switching manipulation loop of B, C phase mutually, i.e. each phase all distinguishes a corresponding switching manipulation loop.
The switching manipulation loop of this each phase includes closing circuit, the first sub-gate circuit, the second sub-gate circuit, the first electricity
Source 100 and second source 300；This closing circuit and the first sub-gate circuit form first group of switching manipulation loop,
This closing circuit and the second sub-gate circuit form second group of switching manipulation loop.
The fault zone identification system in first group of switching manipulation loop and method:
This closing circuit and the first sub-gate circuit are connected to the two ends of this first power supply 100, and this closing circuit includes
Switching mechanism 10, jumping position supervisory relay 11, this first sub-gate circuit includes that switching mechanism 10, first closes position
Supervisory relay 21, this first conjunction position supervisory relay 21 and jumping position supervisory relay 11 the most all have at least
A pair normally closed auxiliary contact；
One Fisrt fault generation diagnostic circuit 110 is alternatively connected to this first power supply 100 or the second electricity by switch
The two ends in source 300, the first control relay 12 that this Fisrt fault generation diagnostic circuit 110 includes being connected in series,
First close at least one pair of normally closed auxiliary contact of position supervisory relay 11, jump at least the one of position supervisory relay 21
To normally closed auxiliary contact.
One Fisrt fault region diagnostic circuit 120, this Fisrt fault region diagnostic circuit 120 includes that region diagnoses
Circuit 1 and region diagnostic circuit 2 122, this region diagnostic circuit 1 is connected in parallel this closing circuit
Switching mechanism 10 and and this closing circuit in jumping position supervisory relay 11 be connected in series in this first power supply
100 two ends, this region diagnostic circuit 1 includes that the combined floodgate supervisory relay 13, first being connected in series controls
The normally opened auxiliary contact of the first couple of relay 12.This region diagnostic circuit 2 122 is connected in parallel this first separating brake and returns
The switching mechanism 10 on road and and this first sub-gate circuit in conjunction position supervisory relay 21 be connected in series in this first
Power supply 100 two ends, the first separating brake supervisory relay 22 that this region diagnostic circuit 2 122 includes being connected in series,
The first normally opened auxiliary contact of the second couple controlling relay 12.
One is used for producing and show that the first signal of the signal of this first group of switching manipulation loop fault areas case returns
Road, this first signal circuit includes the 3rd power supply 400 providing the electric energy of signal generation and is connected to the 3rd electricity
Fault zone signal generating circuit between source 400, this fault zone signal generating circuit includes switch region event
Barrier signal circuit 410 and protection zone fault signal circuit 420, this switch region fault signal circuit 410 wraps
Include the 3rd of the first control relay 12 being connected in series to normally opened auxiliary contact, combined floodgate supervisory relay 13
The normally opened auxiliary contact of the first couple of first pair of normally opened auxiliary contact and the first separating brake supervisory relay 22, this protection zone
Territory fault signal circuit 420 includes that the normally closed auxiliary of the first couple of the first separating brake supervisory relay 22 being connected in series is touched
Point, the normally opened auxiliary contact of the second couple of combined floodgate supervisory relay 13 or the first separating brake being connected in series monitor relay
The normally opened auxiliary contact of the second couple of device 22, first pair of normally closed auxiliary contact of combined floodgate supervisory relay 13, this is years old
One control the 3rd of relay 12 normally opened auxiliary contact are connected in series respectively this switch region fault signal circuit,
Protection zone fault signal circuit；
This switch region fault signal circuit 410 and protection zone fault signal circuit 420 are connected in series use respectively
In the optocoupler 41 of transmission fault zone signal, this optocoupler signal connects this monitor terminal 3.
This Fisrt fault generation diagnostic circuit 110 judges that whether this operation circuit is occurred and continued by this first control
The auxiliary contact of electrical equipment 12 contact this Fisrt fault region diagnostic circuit 120 and decide whether to allow this Fisrt fault
Region diagnostic circuit 120 carries out fault zone diagnosis, and this Fisrt fault region diagnostic circuit 120 is by this combined floodgate
Supervisory relay 13 and the normally opened auxiliary contact of the first separating brake supervisory relay 22 and normally closed auxiliary contact contact should
First signal circuit, this first signal circuit is by this switch region fault signal circuit 410 and protection zone event
Whether barrier signal circuit 420 turns on the fault zone judging this switching manipulation loop broken down, and should
Identification result is sent to this long-range master station 4 by monitor terminal 3.
The logical action of this first group of switching manipulation loop fault domain identification is former to be below divided into three kinds of situations to illustrate
Reason:
1, when switching mechanism is in operation or switching mechanism stand-by heat (switch point position, will power transmission) state,
There is operation circuit switch region fault, then
(1) the jumping position supervisory relay 11(figure in closing circuit is 1TWJa, 2TWJa, 3TWJa), point
First conjunction position supervisory relay 21 (being 11HWJa, 12HWJa, 13HWJa in figure) all decompressions in lock loop are motionless
Making, its normally closed auxiliary contact is in closure state, now drives the first control relay 12 (being 1ZKa in figure),
The first normally opened auxiliary contact Guan Bi controlling relay 12, i.e. this Fisrt fault generation diagnostic circuit be diagnosed to be this
Break down in one group of switching manipulation loop.
(2) when switch region fault, (figure is 7A and n29 between closing circuit switching mechanism 10 two ends
Between), be equivalent to out (between 137A and n29 in figure) between the first sub-gate circuit switching mechanism 10 two ends
, there is potential difference in road, now jumps position supervisory relay 11 and first and close between 7A and n29,137A and n29
Action do not answered by position supervisory relay 21, combined floodgate supervisory relay 12 and the first separating brake supervisory relay 22 action,
Its normally opened auxiliary contact close, and normally closed auxiliary contact disconnects.Wherein: the current potential between closing circuit 7A and n29
Difference determines by being added in combined floodgate supervisory relay 13 after jumping position supervisory relay 1 and combined floodgate supervisory relay 13 dividing potential drop,
Potential difference between sub-gate circuit 137A and n29 is closed position supervisory relay 21 by first and the first separating brake monitors and continues
It is added in after electrical equipment 22 dividing potential drop in the first separating brake supervisory relay 22(figure as 1ZTJa) determine, close a floodgate and monitor relay
Device the 13, first separating brake supervisory relay 22 must choose (hereafter will address) according to technical parameter.
(3) relay 12, the supervision of combined floodgate supervisory relay the 13, first separating brake are controlled due to operation circuit first
The equal action of relay, its normally opened auxiliary contact close, and its normally closed auxiliary contact disconnects, this switch region fault letter
Number circuit turn-on, therefore believes at the first signal circuit report " the switch region fault in first group of switching manipulation loop "
Number.
2, when switch runs, there is operation circuit protection zone fault, then
(1) the jumping position supervisory relay 11(figure in closing circuit is 1TWJa, 2TWJa, 3TWJa), the
The first conjunction position supervisory relay 21 (being 11HWJa, 12HWJa, 13HWJa in figure) all decompressions in one sub-gate circuit
Being failure to actuate, its normally closed auxiliary contact is in closure state, now drives first to control relay 12 and (in figure is
1ZKa), the first normally opened auxiliary contact controlling relay 12 close.
(2) when protection zone fault because switching mechanism close position, the two ends of closing circuit 7A Yu n29 it
Between circuit itself be in open-circuit condition and there is potential difference, combined floodgate supervisory relay action；Because of switching mechanism fault-free
Being in wait tripped condition, the loop resistance between 137A with n29 is phase much smaller than the first separating brake supervisory relay
When in by separating brake supervisory relay short circuit without action, simultaneously because protection zone fault, jump position and monitor relay
Device 11 and close position supervisory relay 21 and be failure to actuate, therefore first control relay 12 will not cannot because of involution
Feasible region discriminating function.
(3) relay 12, combined floodgate supervisory relay 13 action, the first separating brake are controlled due to operation circuit first
Supervisory relay 12 is failure to actuate, and its normally opened auxiliary contact close, and normally closed auxiliary contact disconnects, this protection zone event
Barrier signal circuit conducting, therefore in the first signal circuit report " the protection zone fault in first group of switching manipulation loop "
Signal.
3, when switching mechanism is in stand-by heat (switch point position, will power transmission), generation operation circuit protection zone
Territory fault, then
(1) the jumping position supervisory relay 11(figure in closing circuit is 1TWJa, 2TWJa, 3TWJa), the
The first conjunction position supervisory relay 21 (being 11HWJa, 12HWJa, 13HWJa in figure) all decompressions in one sub-gate circuit
Being failure to actuate, its normally closed auxiliary contact is in closure state, now drives first to control relay 12 and (in figure is
1ZKa), the first normally opened auxiliary contact controlling relay 12 close.
(2) when protection zone fault, because position jumped by switching mechanism, sub-gate circuit 137A and n29 switching on and shutting down
Itself it is in open-circuit condition between structure two ends and there is potential difference, the first separating brake supervisory relay action；Because of switching on and shutting down
Structure fault-free is in wait "on" position, and the loop resistance between 7A and n29 is much smaller than combined floodgate supervisory relay
Be equivalent to combined floodgate supervisory relay short circuit without action, simultaneously because protection zone fault, close position supervision and continue
Electrical equipment 11 and jump position supervisory relay 21 and be failure to actuate, therefore first control relay 12 will not because of involution nothing
Method feasible region discriminating function.
(3) relay the 12, first separating brake supervisory relay 22 action, combined floodgate are controlled due to operation circuit first
Supervisory relay 13 is failure to actuate, and its normally opened auxiliary contact close, and normally closed auxiliary contact disconnects, this protection zone event
Barrier signal circuit conducting, therefore produces " the protection zone event in first group of switching manipulation loop at the first signal circuit
Barrier " signal.
Above describe fault zone identification system and the method in first group of switching manipulation loop in the present embodiment,
The fault zone identification system in second group of switching manipulation loop in the present embodiment and method are grasped with first group of switch
Make the similar of loop.Wherein, second sub-gate circuit in this second group of switching manipulation loop is connected to this second electricity
Two ends, source 300, this second sub-gate circuit includes that switching mechanism 10, second closes position supervisory relay 31, and this is the years old
Two groups of switching manipulation loops include occurring with the second fault of same circuits structure in first group of switching manipulation loop
Diagnostic circuit 130 and the second fault zone diagnostic circuit 140, this second fault generation diagnostic circuit 130 includes
Second controls relay 14, and this second fault zone diagnostic circuit 140 includes the second separating brake supervisory relay 32,
This second separating brake supervisory relay have at least one pair of normally closed auxiliary contact and some to normally opened auxiliary touch
Point, this second fault zone diagnostic circuit 140 includes being parallel to switching mechanism 10 two ends of this closing circuit
Region diagnostic circuit 3 141 is electric with the region diagnosis at switching mechanism 10 two ends being parallel to this second sub-gate circuit
Road 4 142；This second fault generation diagnostic circuit 130 is selectively docked to these the first power supply 100 two ends or
(if the first power cut-off, automatic switchover second source is powered, if second source breaks at the two ends of two power supplys 300
Electricity first power supply that then automatically switches is powered).Wherein: this second fault generation diagnostic circuit and second fault zone
Second conjunction position supervisory relay 31 of diagnostic circuit and auxiliary contact thereof, second control relay 14 and auxiliary
Help this first conjunction position of contact, the second separating brake supervisory relay 32 and auxiliary contact thereof corresponding displacement respectively to monitor to continue
Electrical equipment 11 and auxiliary contact, the first control relay 12 and auxiliary contact thereof, the first separating brake monitors relay
Device 22 and auxiliary contact thereof；
The present embodiment also includes one for produce and show this second group of switching manipulation loop fault areas case it
The secondary signal loop of signal, this secondary signal loop is connected to the two ends of the 3rd power supply 400, this second letter
Number loop and the first signal circuit have identical circuit structure, wherein: the second control in this secondary signal loop
The normally opened auxiliary contact of relay 14 processed, the second separating brake supervisory relay 32 auxiliary contact respectively to should
One signal circuit first control the normally opened auxiliary contact of relay 12, the first separating brake supervisory relay 22 auxiliary
Help contact.
Among the present embodiment: it is right that this first control relay 12 and the second control relay 14 the most all have three
Normally opened auxiliary contact, this combined floodgate supervisory relay 13 has four and touches normally opened auxiliary contact and two to normally closed auxiliary
Point, this first separating brake supervisory relay 22 and the second separating brake supervisory relay 32 the most all have two to normally opened auxiliary
Help contact and a pair normally closed auxiliary contact.
Combined floodgate supervisory relay the 13, first separating brake supervisory relay 22, the technical parameter choosing of the second separating brake monitor
Access method:
Here, combined floodgate supervisory relay, separating brake supervisory relay monitor relay with jumping position supervisory relay, conjunction position
Device operation voltage need to match.In 220kV and above operation circuit, jump position supervisory relay total resistance value,
The total resistance value closing position supervisory relay is general respectively at 20k Ω, if total nominal voltage 220V(is divided into several
Relay, each relay resistance value sum is 20k Ω, and total nominal voltage is 220V, the specified electricity of single relay
About 220/n, n are relay number to pressure；If having gone here and there resistance R, the most each relay resistance and being added with resistance R
Total resistance value is 20k Ω, and the most single relay rated voltage is (220-220*R/20)/n)；Its operation voltage
Should be less than 110V, (if being divided into several relays, each actuating of relay voltage should be less than i.e. 50% rated voltage
It is relay number for 110/n, n；If having gone here and there resistance R, each actuating of relay voltage should be less than into
(110-110*R/20)/n),.When operation circuit fault, jump position supervisory relay and combined floodgate supervisory relay,
Close position supervisory relay and carry out dividing potential drop with separating brake supervisory relay formation loop.
When jumping position supervisory relay, closing (during operation circuit fault) when position supervisory relay is failure to actuate simultaneously, close
The dividing potential drop action that lock supervisory relay, separating brake supervisory relay should be formed because of switching mechanism failed open.For
Guarantee ZHJ, ZTJ can action message, equally, if taking single relay, then operation voltage should be less than 110V,
Rated voltage is 220V, then resistance value should be greater than 20k Ω；If taking the series connection of n relay group, the most single continue
Electrical equipment operation voltage should be less than 110/n, and rated voltage is 220/n, then single relay resistance value should be greater than
(20/n) k Ω；If taking n relay to connect with resistance R, the most single actuating of relay voltage should be less than
(110-110*R/20)/n), rated voltage is (220-220*R/20)/n), resistance value should be greater than (20-R)
/n。
Embodiment two, refer to Fig. 8 and Fig. 9:
For the switching manipulation loop of below 220kV, the most corresponding same switch behaviour of each phase in its three-phase line
Make loop, this switching manipulation loop by point, closing coil control the link gear of this switching mechanism primary side with
Realize the divide-shut brake of threephase switch.This switching manipulation loop only includes closing circuit and a sub-gate circuit, its fault
Domain identification system and method is with first group of switching manipulation loop in embodiment one or second group of switching manipulation loop
Similar.Switching manipulation loop in the present embodiment is only powered by a power supply, and its fault generation diagnostic circuit connects
In this power supply.
In the present embodiment, it controls relay and has two to normally opened auxiliary contact, its combined floodgate supervisory relay and point
Lock supervisory relay the most all has two to normally opened auxiliary contact and a pair normally closed auxiliary contact.
For the switching manipulation loop of below 220kV, its fault generation diagnostic circuit and fault zone diagnostic circuit
In relay parameter system of selection identical with described in embodiment one, simply, it jumps the total of position supervisory relay
Resistance value, the total resistance value of conjunction position supervisory relay are probably respectively 40k Ω.
By this high-voltage switch gear operation circuit fault zone identification system and method, our maintainer can be direct
Fault generation area signal (switch region fault-signal or protection zone fault letter is checked at long-range master station
Number), and assigning the maintainer of corresponding specialty to go in-situ processing fault, so, it is not necessary to two groups of professionals go to together
Scene carries out fault location work, decreases labour force, also shortens fault handling time, reduces expansion thing
Therefore risk.
The above, only present pre-ferred embodiments, therefore the scope that the present invention implements can not be limited according to this,
The equivalence change i.e. made according to the scope of the claims of the present invention and description and modification, all should still belong to the present invention and contain
In the range of.
Claims (8)
1. high-voltage switch gear operation circuit fault zone identification system, it is characterised in that: including:
Switching manipulation loop, this switching manipulation loop includes closing circuit, sub-gate circuit, fault generation diagnostic circuit and fault zone diagnostic circuit, this closing circuit and sub-gate circuit all include a switching mechanism, this fault generation diagnostic circuit includes having some control relays to normally opened auxiliary contact, and this fault zone diagnostic circuit includes the most all having some combined floodgate supervisory relays to normally opened auxiliary contact and normally closed auxiliary contact and separating brake supervisory relay；
For producing the signal circuit of the signal with display switch operation circuit fault zone, this signal circuit includes switch region fault signal circuit and protection zone fault signal circuit；
Monitor terminal and long-range master station, this signal circuit signal connects this monitor terminal, and this monitor terminal network signal connects this long-range master station；
This fault generation diagnostic circuit can contact this fault zone diagnostic circuit by the auxiliary contact of this control relay and decide whether to allow this fault zone diagnostic circuit to carry out fault zone diagnosis; this fault zone diagnostic circuit contacts this signal circuit by the auxiliary contact of this combined floodgate supervisory relay and separating brake supervisory relay; whether this signal circuit turns on this fault zone of identification by switch region fault signal circuit and protection zone fault signal circuit, and by monitor terminal, this identification result is sent to this long-range master station.
High-voltage switch gear operation circuit fault zone the most according to claim 1 identification system, it is characterized in that: this closing circuit includes jumping position supervisory relay, this sub-gate circuit includes closing position supervisory relay, this conjunction position supervisory relay and jumping position supervisory relay the most all have at least one pair of normally closed auxiliary contact, and this fault generation diagnostic circuit includes the normally closed auxiliary contact closing position supervisory relay being connected in series, the normally closed auxiliary contact jumping position supervisory relay and controls relay；
This fault zone diagnostic circuit includes the region diagnostic circuit one being connected in closing circuit and the region diagnostic circuit two being connected in sub-gate circuit, and this region diagnostic circuit one includes the combined floodgate supervisory relay at the two ends of the switching mechanism being connected in series in closing circuit, controls the normally opened auxiliary contact of the first couple of relay；This region diagnostic circuit two includes the separating brake supervisory relay at the two ends of the switching mechanism being connected in series in sub-gate circuit, controls the normally opened auxiliary contact of the second couple of relay.
High-voltage switch gear operation circuit fault zone the most according to claim 2 identification system, it is characterised in that: this switching manipulation loop also includes the first power supply, and this fault generation diagnostic circuit is connected to this first both ends of power.
High-voltage switch gear operation circuit fault zone the most according to claim 3 identification system, it is characterised in that: this switching manipulation loop also includes second source, and this fault generation diagnostic circuit is selectively connected to this first both ends of power or second source two ends.
High-voltage switch gear operation circuit fault zone the most according to claim 1 identification system, it is characterised in that: this switch region fault signal circuit includes the normally opened auxiliary contact of the first couple of combined floodgate supervisory relay, the normally opened auxiliary contact of the first couple of separating brake supervisory relay being connected in series；This protection zone fault signal circuit includes the normally opened auxiliary contact of the second couple of the combined floodgate supervisory relay being connected in series, first pair of normally closed auxiliary contact of separating brake supervisory relay and the first pair of normally closed auxiliary contact of combined floodgate supervisory relay being connected in series, the normally opened auxiliary contact of the second couple of separating brake supervisory relay, and the 3rd of this control relay is connected in series this switch region fault signal circuit, protection zone fault signal circuit respectively to normally opened auxiliary contact.
High-voltage switch gear operation circuit fault zone identification system the most according to claim 1 or 5; it is characterized in that: also include the optocoupler for transmitting fault zone signal; this switch region fault signal circuit and protection zone fault signal circuit are connected in series this optocoupler respectively, and this optocoupler signal connects this monitor terminal.
High-voltage switch gear operation circuit fault zone the most according to claim 2 identification system, it is characterized in that: the technical parameter of this conjunction position supervisory relay matches with the technical parameter of separating brake supervisory relay, the technical parameter of this jumping position supervisory relay matches with the technical parameter of combined floodgate supervisory relay.
8. high-voltage switch gear operation circuit fault zone discrimination method, based on the high-voltage switch gear operation circuit fault zone identification system according to any one of claim 1-7, it is characterised in that:
When switching mechanism operation or switching mechanism stand-by heat, there is operation circuit switch region fault, then include:
Step 11, jumping position supervisory relay in closing circuit, the conjunction position equal decompression of supervisory relay in sub-gate circuit is failure to actuate, the normally closed auxiliary contact closing position supervisory relay and jumping position supervisory relay in this fault generation diagnostic circuit is in closure state and drives the control actuating of relay, and the normally opened auxiliary contact Guan Bi of this control relay；
Step 12, the combined floodgate supervisory relay of this fault zone diagnostic circuit and separating brake supervisory relay action, the normally opened auxiliary contact Guan Bi of its correspondence, normally closed auxiliary contact disconnects；
Step 13, the switch region fault signal circuit of this signal circuit turns on and passes through monitor terminal and sends fault zone signal to long-range master station；
When switch runs, there is operation circuit protection zone fault, then include:
Step 21, jumping position supervisory relay in closing circuit, the conjunction position equal decompression of supervisory relay in sub-gate circuit is failure to actuate, the normally closed auxiliary contact closing position supervisory relay and jumping position supervisory relay in this fault generation diagnostic circuit is in closure state and drives the control actuating of relay, and the normally opened auxiliary contact Guan Bi of this control relay；
Step 22, the combined floodgate supervisory relay action of this fault zone diagnostic circuit, the normally opened auxiliary contact Guan Bi of its correspondence, normally closed auxiliary contact disconnects, and separating brake supervisory relay is failure to actuate, and the normally opened auxiliary contact of its correspondence, normally closed auxiliary contact keep original state；
Step 23, the protection zone fault signal circuit of this signal circuit turns on and passes through monitor terminal and sends fault zone signal to long-range master station；
When switching mechanism is in stand-by heat, there is operation circuit protection zone fault, then include:
Step 31, jumping position supervisory relay in closing circuit, the conjunction position equal decompression of supervisory relay in sub-gate circuit is failure to actuate, the normally closed auxiliary contact closing position supervisory relay and jumping position supervisory relay in this fault generation diagnostic circuit is in closure state and drives the control actuating of relay, and the normally opened auxiliary contact Guan Bi of this control relay；
Step 32, the separating brake supervisory relay action of this fault zone diagnostic circuit, the normally opened auxiliary contact Guan Bi of its correspondence, normally closed auxiliary contact disconnects, and combined floodgate supervisory relay is failure to actuate, and the normally opened auxiliary contact of its correspondence, normally closed auxiliary contact keep original state；
Step 33, the protection zone fault signal circuit of this signal circuit turns on and passes through monitor terminal and sends fault zone signal to long-range master station.
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| CN106353672B (en) * | 2016-08-19 | 2024-02-27 | 苏州宝化炭黑有限公司 | Operation column switch failure judgment device |
| CN106483423B (en) * | 2016-12-05 | 2023-06-30 | 山东钢铁股份有限公司 | Fault searching method and device for breaker opening electric loop |
| CN107147091A (en) * | 2017-06-12 | 2017-09-08 | 中国神华能源股份有限公司 | Method, apparatus and system for triggering fast cut back |
| CN113777531B (en) * | 2021-09-10 | 2024-06-07 | 国网江苏省电力有限公司徐州供电分公司 | Substation operation loop monitoring and fault analysis method |
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