CN103941155A - High-voltage switch control loop break area identification circuit and identification method - Google Patents
High-voltage switch control loop break area identification circuit and identification method Download PDFInfo
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- CN103941155A CN103941155A CN201410141433.9A CN201410141433A CN103941155A CN 103941155 A CN103941155 A CN 103941155A CN 201410141433 A CN201410141433 A CN 201410141433A CN 103941155 A CN103941155 A CN 103941155A
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Abstract
The invention discloses a high-voltage switch control loop break area identification circuit and an identification method. The identification circuit comprises a switch control loop and a signal loop, wherein the switch control loop comprises a switching-on loop and a switching-off loop, a circuit breaking diagnosis circuit is additionally arranged in the switch control loop so as to diagnose whether a circuit in the switch control loop is broken, a switching-on monitoring relay and a switching-off monitoring relay are additionally arranged in the switch control loop to judge a circuit breaking area, a circuit breaking area signal is generated and displayed through the signal loop, whether circuit breaking area judgment is allowed is determined by the circuit breaking diagnosis circuit, and accordingly switch control loop break area identification motion logic is formed. According to the circuit, identification of the switch control loop break area is achieved, the first-air repair efficiency of a broken circuit is improved, first-air repair labor is saved, and circuit load loss is greatly reduced.
Description
Technical field
The present invention relates to a kind of high-voltage switch gear control loop broken string domain identification circuit and discrimination method.
Background technology
The control loop of relay protection is the important loop that ensures power network safety operation, during relay protection high-voltage switch gear control loop broken string, if generation power grid accident, to start breaker fail protection, the whole piece bus at excision switch place, cause huge load loss, unique can cover the loss be exactly improve repairing efficiency, but the current domestic effective technological means that lacks, cannot distinguish quickly and accurately the particular location that high-voltage switch gear control loop broken string occurs, therefore rushing to repair processing procedure relates to two groups of professionals (switch control circuit protection zone broken string repairing professional and switch region broken string repairing professional) and coordinates and search the region of breaking, cause the processing time long, inefficiency, expend larger labour.
Summary of the invention
The invention provides a kind of high-voltage switch gear control loop broken string domain identification circuit, it has overcome the deficiencies in the prior art described in background technology.
One of technical scheme adopting that the present invention solves its technical matters is:
110kV and following switch control circuit broken string domain identification circuit, it comprises: A, B, C mutually a common corresponding switch control circuit and for generation of with the signal circuit of signal that shows this switch control circuit broken string region, this signal circuit comprises signal circuit one;
This switch control circuit comprises closing circuit, the first sub-gate circuit and give the first power supply of this closing circuit and the first sub-gate circuit power supply, this closing circuit comprises switching mechanism, jump position supervisory relay, there is diagnostic circuit and for judging the combined floodgate supervisory relay of this broken string generation area in the first broken string, this first sub-gate circuit comprises switching mechanism, the first co-bit supervisory relay, there is diagnostic circuit and for judging the first separating brake supervisory relay of this broken string generation area in the first broken string, this the first co-bit supervisory relay and a jumping position supervisory relay all have respectively multipair normally closed auxiliary contact, this combined floodgate supervisory relay and the first separating brake supervisory relay all have respectively multipair normally closed auxiliary contact and the multipair auxiliary contact of often opening, this broken string region comprises switch region and protection zone, this switch region comprises this switching mechanism, this protection zone comprises except the switch control circuit part this switching mechanism,
There is diagnostic circuit and combined floodgate supervisory relay and be connected in series in the two ends of this switching mechanism in first in this closing circuit broken string, and is connected in series in the two ends of this first power supply with this jumping position supervisory relay again;
There is diagnostic circuit and the first separating brake supervisory relay and be connected in series in the two ends of this switching mechanism in first in this first sub-gate circuit broken string, and is connected in series in the two ends of this first power supply with this first co-bit supervisory relay again;
This signal circuit one comprises the first broken string generation diagnostic circuit and broken string regional signal circuit, there is diagnostic circuit and be connected in series this broken string regional signal circuit in this first broken string, this broken string regional signal circuit comprises the switch region disconnection signal circuit and the protection zone disconnection signal circuit that are connected in parallel, this switch region disconnection signal circuit comprises that the first couple that the first couple of the combined floodgate supervisory relay being connected in series often drives auxiliary contact and the first separating brake supervisory relay often drives auxiliary contact, this protection zone disconnection signal circuit comprises first pair of normally closed auxiliary contact of the first separating brake supervisory relay being connected in series, the second couple of combined floodgate supervisory relay often drives auxiliary contact and the second couple of the first separating brake supervisory relay of being connected in series often drives auxiliary contact, first pair of normally closed auxiliary contact of combined floodgate supervisory relay,
There is the normally closed auxiliary contact that diagnostic circuit comprises the normally closed auxiliary contact of the first co-bit supervisory relay being connected in series and jumps position supervisory relay in this first broken string;
There is diagnostic circuit and judge that whether the broken string of this control loop occurs in this first broken string; and determine whether to allow the break region diagnosis of this combined floodgate supervisory relay and the first separating brake supervisory relay; this combined floodgate supervisory relay and the first separating brake supervisory relay contact this signal circuit one by its auxiliary contact, by this switch region disconnection signal circuit and protection zone disconnection signal circuit whether conducting judge the broken string region of this switch control circuit.
Among one embodiment: this signal circuit one also comprises power supply monitoring signal circuit, it comprises the second pair of normally closed auxiliary contact of the combined floodgate supervisory relay that is connected in series and second pair of normally closed auxiliary contact of the first separating brake supervisory relay, there is diagnostic circuit and be connected in series in this power supply monitoring signal circuit and this first broken string, and is connected in parallel with this broken string regional signal circuit.
Among one embodiment: also comprise the optocoupler for transmitting broken string regional signal, this switch region disconnection signal circuit and protection zone disconnection signal circuit are connected in series respectively an optocoupler.
Among one embodiment: also comprise the optocoupler for transmission of signal, this switch region disconnection signal circuit, protection zone disconnection signal circuit, power supply monitoring signal circuit are connected in series respectively an optocoupler.
The present invention solve its technical matters the technical scheme adopting two be:
220kV and above switch control circuit broken string domain identification circuit, 110kV based on described and following switch control circuit broken string domain identification circuit, it comprises A, B, C distinguishes three corresponding switch control circuits mutually, this switch control circuit comprises closing circuit, the first sub-gate circuit, the second sub-gate circuit, the first power supply and the second source of powering to this second sub-gate circuit, this second sub-gate circuit comprises switching mechanism, the second separating brake supervisory relay, there is diagnostic circuit in the second co-bit supervisory relay and the second broken string, this closing circuit also comprises the second broken string generation diagnostic circuit, this the second co-bit supervisory relay has multipair normally closed auxiliary contact, the second separating brake supervisory relay has multipair normally closed auxiliary contact and the multipair auxiliary contact of often opening,
There is diagnostic circuit and combined floodgate supervisory relay and be connected in series in the two ends of this switching mechanism in second in this closing circuit broken string, and is connected in series in the two ends of this first power supply with this jumping position supervisory relay; There is diagnostic circuit and the second separating brake supervisory relay and be connected in series in the two ends of this switching mechanism in second in this second sub-gate circuit broken string, and is connected in series in the two ends of this second source with this second co-bit supervisory relay; Wherein: diagnostic circuit occurs this second broken string has and the identical circuit structure of the first broken string generation diagnostic circuit, the normally closed auxiliary contact of its second co-bit supervisory relay to should first broken string there is the normally closed auxiliary contact of the first co-bit supervisory relay of diagnostic circuit;
Also comprise for generation of with the signal circuit of signal that shows corresponding switch control circuit broken string region, this signal circuit comprises signal circuit one and signal circuit two, this signal circuit two has the circuit structure identical with signal circuit one, wherein: the auxiliary contact of the second separating brake supervisory relay in this signal circuit two and the auxiliary contact of the second co-bit supervisory relay are respectively to the auxiliary contact of the first separating brake supervisory relay and the auxiliary contact of the first co-bit supervisory relay in should signal circuit one.
The present invention solve its technical matters the technical scheme adopting three be:
High-voltage switch gear control loop broken string domain identification method, the 110kV based on above-mentioned and following switch control circuit broken string domain identification circuit and above-mentioned 220kV and above switch control circuit broken string domain identification circuit, comprise following several identification step:
When switching mechanism is in operation or when switching mechanism hot stand-by duty, there is control loop switch region broken string, comprising:
Step 11, the jumping position supervisory relay in closing circuit, the equal decompression of co-bit supervisory relay in sub-gate circuit is failure to actuate, and its normally closed auxiliary contact is all in closure state, and there is diagnostic circuit conducting in broken string, and diagnose out this switch control circuit to break;
Step 12, when switch region broken string, between closing circuit switching mechanism two ends, between sub-gate circuit switching mechanism 10 two ends, be equivalent to open circuit and have a potential difference (PD), now jumping position supervisory relay and co-bit supervisory relay is failure to actuate, combined floodgate supervisory relay and separating brake supervisory relay 22 move, it often opens auxiliary contact closure, and normally closed auxiliary contact disconnects;
Step 13, because combined floodgate supervisory relay, the separating brake supervisory relay of control loop all move, it often opens auxiliary contact closure, and its normally closed auxiliary contact disconnects, this switch region disconnection signal circuit turn-on, signal circuit produces " the switch region broken string of switch control circuit " signal;
In the time that switch moves, there is control loop protection zone broken string, comprise
Step 21, the jumping position supervisory relay in closing circuit, the equal decompression of co-bit supervisory relay in sub-gate circuit is failure to actuate, and its normally closed auxiliary contact is all in closure state, and there is diagnostic circuit conducting in broken string, and diagnose out this switch control circuit to break;
Step 22, when protection zone broken string, switching mechanism is in co-bit, between the switching mechanism two ends of closing circuit in open-circuit condition and have potential difference (PD), the action of combined floodgate supervisory relay; Because switching mechanism non-fault is in waiting for tripped condition, the loop resistance between the switching mechanism two ends of sub-gate circuit is equivalent to separating brake supervisory relay short circuit can not move much smaller than separating brake supervisory relay;
Step 23, because the action of combined floodgate supervisory relay, separating brake supervisory relay are failure to actuate, it often opens auxiliary contact closure, and normally closed auxiliary contact disconnects, this protection zone disconnection signal circuit turn-on, signal circuit produces " the protection zone broken string of switch control circuit " signal;
When switching mechanism is during in stand-by heat, there is control loop protection zone broken string, comprise
Step 31, jumping position supervisory relay in closing circuit, the equal decompression of co-bit supervisory relay in sub-gate circuit is failure to actuate, and its normally closed auxiliary contact is all in closure state, there is diagnostic circuit conducting in the first broken string, and diagnose out this switch control circuit to break;
, when protection zone broken string, because switching mechanism is being jumped position, between the switching mechanism two ends of sub-gate circuit, itself there is potential difference (PD) in open-circuit condition, the action of separating brake supervisory relay in step 32; Because switching mechanism is without breaking in waiting for "on" position, the loop resistance between the switching mechanism two ends of closing circuit is equivalent to combined floodgate supervisory relay 13 short circuits can not move much smaller than combined floodgate supervisory relay;
Step 33; because the action of separating brake supervisory relay, combined floodgate supervisory relay are failure to actuate, it often opens auxiliary contact closure, and normally closed auxiliary contact disconnects; this protection zone disconnection signal circuit turn-on, signal circuit produces " the protection zone broken string of switch control circuit " signal.
The technical program is compared with background technology, and its tool has the following advantages:
By combined floodgate supervisory relay and separating brake supervisory relay are installed in the closing circuit in switch control circuit and sub-gate circuit, the auxiliary contact that utilize they and co-bit supervisory relay and jump position supervisory relay are as signal transfer medium, realize the automatic Identification of switch control circuit switch region broken string and protection zone broken string, according to the identification result in this broken string region (switch region broken string or protection zone broken string), in conducting transmission line broken string repairing process, only need the repair personnel who sets out corresponding broken string region to rush to repair, without set out simultaneously, break in switch region and protection zone two kinds of professional repair personnel of broken string investigate confirmation broken string generation area to scene, reduce expending of labour, also improved repairing efficiency, thereby reduce load loss.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 has illustrated the closing circuit schematic diagram of the A phase switch control circuit of the present embodiment one.
Fig. 2 has illustrated the first sub-gate circuit schematic diagram of the A phase switch control circuit of the present embodiment one.
Fig. 3 has illustrated the second sub-gate circuit schematic diagram of the A phase switch control circuit of the present embodiment one.
Fig. 4 has illustrated signal circuit one schematic diagram of the present embodiment one.
Fig. 5 has illustrated signal circuit two schematic diagram of the present embodiment one.
Fig. 6 has illustrated the closing circuit of the switch control circuit in the present embodiment two, the overall connection diagram of sub-gate circuit.
Fig. 7 has illustrated signal circuit one schematic diagram in the present embodiment two.
Embodiment
Embodiment mono-, please refers to Fig. 1 to Fig. 5:
For the switch control circuit of 220kV and above, each of three-phase line A, B, C phase distinguish mutually a corresponding switch control circuit and for generation of with the signal circuit of signal that shows this switch control circuit broken string region.The switch control circuit of this each phase comprises closing circuit, the first sub-gate circuit, the second sub-gate circuit, the first power supply 100 and the second source 200 to this second sub-gate circuit power supply; This closing circuit and the first sub-gate circuit form first group of switch control circuit, and this closing circuit and the second sub-gate circuit form second group of switch control circuit.
This switch control circuit broken string region comprises switch region and protection zone, and this switch region comprises this switching mechanism, and this protection zone comprises except the switch control circuit part this switching mechanism.
Broken string domain identification circuit and the discrimination method of first group of switch control circuit:
This closing circuit and the first sub-gate circuit are connected to the two ends of this first power supply 100, this closing circuit comprises switching mechanism 10, jump position supervisory relay 11, there is diagnostic circuit 110 and for judging the combined floodgate supervisory relay 13 of this broken string generation area in the first broken string, this first sub-gate circuit comprises switching mechanism 10, the first co-bit supervisory relay 21, there is diagnostic circuit 110 and for judging the first separating brake supervisory relay 22 of this broken string generation area in the first broken string, this the first co-bit supervisory relay 21 and a jumping position supervisory relay 11 all have respectively some to normally closed auxiliary contact, this combined floodgate supervisory relay 13 and the first separating brake supervisory relay 22 all have respectively multipair normally closed auxiliary contact and the multipair auxiliary contact of often opening,
There is the normally closed auxiliary contact that diagnostic circuit 110 comprises the normally closed auxiliary contact of the first co-bit supervisory relay 21 being connected in series and jumps position supervisory relay 11 in this first broken string.
There is diagnostic circuit 110 and combined floodgate supervisory relay 13 and be connected in series in the two ends of this switching mechanism 10 in first in this closing circuit broken string, and is connected in series in the two ends of this first power supply 100 with this jumping position supervisory relay 11 again;
There is diagnostic circuit 110 and the first separating brake supervisory relay 22 and be connected in series in the two ends of this switching mechanism 10 in first in this sub-gate circuit broken string, and is connected in series in the two ends of this first power supply 100 with this first co-bit supervisory relay 21 again;
This signal circuit comprise for generation of with the signal circuit one of signal that shows this first group of switch control circuit broken string region situation, this signal circuit one comprises the first broken string generation diagnostic circuit 110 and broken string regional signal circuit, there is diagnostic circuit 110 and be connected in series this broken string regional signal circuit in this first broken string, this broken string regional signal circuit comprises the switch region disconnection signal circuit 410 and the protection zone disconnection signal circuit 420 that are connected in parallel, this switch region disconnection signal circuit 410 comprises that the first couple that the first couple of the combined floodgate supervisory relay 13 being connected in series often drives auxiliary contact and the first separating brake supervisory relay 22 often drives auxiliary contact, this protection zone disconnection signal circuit 420 comprises first pair of normally closed auxiliary contact of the first separating brake supervisory relay 22 being connected in series, the second couple of combined floodgate supervisory relay 13 often drives auxiliary contact and the second couple of the first separating brake supervisory relay 22 of being connected in series often drives auxiliary contact, first pair of normally closed auxiliary contact of combined floodgate supervisory relay 13, in the present embodiment, this signal circuit one also comprises power supply monitoring signal circuit 430, it comprises the second pair of normally closed auxiliary contact of the combined floodgate supervisory relay 13 that is connected in series and second pair of normally closed auxiliary contact of the first separating brake supervisory relay 22, there is diagnostic circuit 110 with this first broken string and be connected in series in this power supply monitoring signal circuit 430, and is connected in parallel with this broken string regional signal circuit.
In the present embodiment, this closing circuit and the first sub-gate circuit all also comprise respectively one first adaptive resistance circuit 120, this first adaptive resistance circuit 120 comprises that diagnostic circuit 110 and at least one adaptive resistance 12 occur the first broken string being connected in series, be connected in parallel this jumping position supervisory relay 11 be connected in series in the two ends 100 of this first power supply with this combined floodgate supervisory relay 13 of the first adaptive resistance circuit 120 in this closing circuit, be connected in parallel this first co-bit supervisory relay 21 be connected in series in the two ends of this first power supply 100 with this first separating brake supervisory relay 22 of the first adaptive resistance circuit 120 in this sub-gate circuit.
In the present embodiment, this switch region disconnection signal circuit 410, protection zone disconnection signal circuit 420, power supply monitoring signal circuit 430 are connected in series respectively the optocoupler 41 for transmission of signal.In one preferred embodiments, each corresponding power supply monitoring signal circuit 430 of this three-phase line can connect same optocoupler simultaneously, and all sends power supply monitoring signal (power supply power on signal or power off signal) by this optocoupler.
There is diagnostic circuit 110 and judge that whether the broken string of this control loop occurs in this first broken string, and determine whether to allow the break region diagnosis of this combined floodgate supervisory relay 13 and the first separating brake supervisory relay 22, this combined floodgate supervisory relay 13 and the first separating brake supervisory relay 22 often drive auxiliary contact by it and normally closed auxiliary contact contacts this signal circuit one, this signal circuit one by this switch region disconnection signal circuit 410 and protection zone disconnection signal circuit 420 whether conducting judge the broken string region of this switch control circuit, and this identification result is sent to remote monitoring main website by monitor terminal.
Below be divided into the logical action principle that three kinds of situations illustrate this first group of switch control circuit broken string domain identification:
1, when switching mechanism is in operation or when switching mechanism stand-by heat (switch divides position, by power transmission) state, there is control loop switch region broken string,
(1) the jumping position supervisory relay 11 in closing circuit, the equal decompression of the first co-bit supervisory relay 21 in sub-gate circuit is failure to actuate, its normally closed auxiliary contact is all in closure state, and diagnostic circuit conducting occurs the first broken string, and diagnoses out this first group of switch control circuit to break.
(2) when switch region broken string, between closing circuit switching mechanism 10 two ends, between (being between 7A and n29 in figure), the first sub-gate circuit switching mechanism 10 two ends, (in figure, being between 137A and n29) is equivalent to open circuit, 7A and n29, between 137A and n29, there is potential difference (PD), now jumping position supervisory relay 11 and the first co-bit supervisory relay 21 should not move, combined floodgate supervisory relay 12 and the first separating brake supervisory relay 22 move, and it often opens auxiliary contact closure, and normally closed auxiliary contact disconnects.Wherein: the potential difference (PD) between closing circuit 7A and n29 by jump a supervisory relay 11 and the first adaptive resistance circuit 120 in parallel again with combined floodgate supervisory relay 13 dividing potential drops after be added in combined floodgate supervisory relay 13 voltage determine, the voltage that is added in the first separating brake supervisory relay 22 after again with the first separating brake supervisory relay 22 dividing potential drops in parallel of the potential difference (PD) between sub-gate circuit 137A and n29 by the first co-bit supervisory relay 21 and the first adaptive resistance circuit 120 is definite.
(3) because combined floodgate supervisory relay 13, the first separating brake supervisory relay of control loop all move, it often opens auxiliary contact closure, its normally closed auxiliary contact disconnects, this switch region disconnection signal circuit turn-on, therefore signal circuit one is reported " the switch region broken string of first group of switch control circuit " signal.
2,, in the time that switch moves, there is control loop protection zone broken string,
(1) the jumping position supervisory relay 11 in closing circuit, the equal decompression of the first co-bit supervisory relay 21 in the first sub-gate circuit is failure to actuate, its normally closed auxiliary contact is all in closure state, and diagnostic circuit conducting occurs the first broken string, and diagnoses out this first group of switch control circuit to break.
(2) when protection zone broken string, because switching mechanism is in co-bit, between closing circuit 7A and the two ends of n29 there is potential difference (PD) in open-circuit condition in circuit itself, and combined floodgate supervisory relay moves; Because switching mechanism non-fault is in waiting for tripped condition; loop resistance between 137A and n29 is equivalent to the first separating brake supervisory relay 22 short circuits can not move much smaller than the first separating brake supervisory relay; simultaneously due to protection zone broken string; jump position supervisory relay 11 and the first co-bit supervisory relay 21 and be failure to actuate, therefore the first broken string there is diagnostic circuit can be because of not conducting and cannot feasible region discriminating function.
(3) because combined floodgate supervisory relay 13 moves, the first separating brake supervisory relay 22 is failure to actuate; it often opens auxiliary contact closure; normally closed auxiliary contact disconnects; this protection zone disconnection signal circuit turn-on, therefore at first signal loop report " the protection zone broken string of first group of switch control circuit " signal.
3,, when switching mechanism is when stand-by heat (switch divides position, by power transmission), there is control loop protection zone broken string,
(1) the jumping position supervisory relay 11 in closing circuit, the equal decompression of the first co-bit supervisory relay 21 in the first sub-gate circuit is failure to actuate, its normally closed auxiliary contact is all in closure state, and diagnostic circuit conducting occurs the first broken string, and diagnoses out this first group of switch control circuit to break.
(2) when protection zone broken string, because switching mechanism is being jumped position, between sub-gate circuit 137A and n29 switching mechanism two ends, itself there is potential difference (PD) in open-circuit condition, the first separating brake supervisory relay 22 moves; Because switching mechanism is without breaking in waiting for "on" position; loop resistance between 7A and n29 is equivalent to combined floodgate supervisory relay 13 short circuits can not move much smaller than combined floodgate supervisory relay 13; simultaneously due to protection zone broken string; the first co-bit supervisory relay 11 and jump a position supervisory relay 21 and be failure to actuate, therefore the first broken string there is diagnostic circuit can be because of not conducting and cannot feasible region discriminating function.
(3) because the first separating brake supervisory relay 22 supervisory relay 13 that moves, closes a floodgate is failure to actuate; it often opens auxiliary contact closure; normally closed auxiliary contact disconnects; this protection zone disconnection signal circuit turn-on, therefore produces " the protection zone broken string of first group of switch control circuit " signal in first signal loop.
More than set forth broken string domain identification circuit and the method for first group of switch control circuit in the present embodiment, the broken string domain identification circuit of second group of switch control circuit in the present embodiment and method are similar to first group of switch control circuit.Wherein, the second sub-gate circuit of this second group of switch control circuit is connected to this second source 200 two ends, this second sub-gate circuit comprises that diagnostic circuit 130 occurs for switching mechanism 10, the second co-bit supervisory relay 31, the second separating brake supervisory relay 32, the second broken string, this the second separating brake supervisory relay 32 has some to often opening auxiliary contact and normally closed auxiliary contact, and this second co-bit supervisory relay 31 has multipair normally closed auxiliary contact.Diagnostic circuit 130 occurs this second broken string has and the identical circuit structure of the first broken string generation diagnostic circuit 110, to should the first broken string there is the normally closed auxiliary contact of the first co-bit supervisory relay 21 of diagnostic circuit 110 in the normally closed auxiliary contact that the second co-bit supervisory relay 31 in diagnostic circuit occurs this second broken string, in this closing circuit second broken string generation diagnostic circuit 130 and combined floodgate supervisory relay 13 are connected in series in the two ends of this switching mechanism 10, and be connected in series in the two ends of this first power supply 100 with this jumping position supervisory relay 11, this second sub-gate circuit has the circuit structure identical with the first sub-gate circuit, there is diagnostic circuit 130 diagnostic circuit 110 occurred the first separating brake supervisory relay 22 and first in should the first sub-gate circuit in the second separating brake supervisory relay 32 in this second sub-gate circuit and second, in this second sub-gate circuit second broken string generation diagnostic circuit 130 and the second separating brake supervisory relay 32 are connected in series in the two ends of this switching mechanism 10, and be connected in series in the two ends of this second source 200 with this second co-bit supervisory relay 31.
In the present embodiment, this closing circuit and the second sub-gate circuit all also comprise respectively one second adaptive resistance circuit 140, this second adaptive resistance electricity, 140 comprise that diagnostic circuit 130 and at least one adaptive resistance 12 occur the second broken string being connected in series, be connected in parallel this jumping position supervisory relay 11 be connected in series in the two ends of this first power supply 100 with this combined floodgate supervisory relay 13 of the second adaptive resistance circuit 140 in this closing circuit, be connected in parallel this second co-bit supervisory relay 31 be connected in series in the two ends of this second source 200 with this second separating brake supervisory relay 32 of the second adaptive resistance circuit 140 in this sub-gate circuit.
The broken string domain identification circuit of this second group of switch control circuit comprise for generation of with the signal circuit two of signal that shows this second group of switch control circuit broken string region situation, this signal circuit two has the circuit structure identical with signal circuit one, wherein: the auxiliary contact of the second separating brake supervisory relay 32 in this signal circuit two and the auxiliary contact of the second co-bit supervisory relay 31 are respectively to the auxiliary contact of the first separating brake supervisory relay 22 and the auxiliary contact of the first co-bit supervisory relay 21 in should signal circuit one.
In the present embodiment, in order to make control loop when broken string, jump position supervisory relay 11 and first, the second adaptive resistance circuit 120(140) parallel connection can with combined floodgate supervisory relay 13, this the first co-bit supervisory relay 21 can form respectively effective loop voltage-distributing to guarantee this combined floodgate supervisory relay 13 and first with the second separating brake supervisory relay 32 with the in parallel of the second adaptive resistance circuit 140 with the first separating brake supervisory relay 22 and the second co-bit supervisory relay 31 separately with the in parallel of the first adaptive resistance circuit 120, the second separating brake supervisory relay 22(32) can move by default broken string domain identification logic, the resistance summation of this adaptation resistance 12 should be chosen in 40k Ω left and right.Generally, combined floodgate supervisory relay 13 and first, the second separating brake supervisory relay 22(32) resistance value be less than 30k Ω, and some first, the second co-bit supervisory relay 21(31) or jump position supervisory relay 11 resistance value can reach 40k Ω, therefore at this jumping position supervisory relay 11 and first, the second co-bit supervisory relay 21(31) guarantee this combined floodgate supervisory relay 13 and first by the first adaptive resistance circuit 120 in parallel and the second adaptive resistance circuit 140 respectively, the second separating brake supervisory relay 22(32) loop voltage-distributing be greater than this jumping position supervisory relay 11 and first, the second co-bit supervisory relay 21(31) respectively with the first adaptive resistance circuit 120, the dividing potential drop in parallel of the second adaptive resistance circuit 140, make this combined floodgate supervisory relay 13 and first, the second separating brake supervisory relay 22(32) effective action message, and this combined floodgate supervisory relay 13 and first, the second separating brake supervisory relay 22(32) resistance can be chosen in 20k Ω and all can above.If this closing circuit and first, in the second sub-gate circuit, do not comprise the first adaptive resistance circuit 120 and the second adaptive resistance circuit 140, in order to make this combined floodgate supervisory relay, the first separating brake supervisory relay and the second separating brake supervisory relay can move according to default broken string domain identification logic, this jumping position supervisory relay and combined floodgate supervisory relay, this the first co-bit supervisory relay and the first separating brake supervisory relay, this the second co-bit supervisory relay and the second separating brake supervisory relay need respectively to meet resistors match relation, wherein, the resistance of this combined floodgate supervisory relay need be greater than jumps position supervisory relay, the resistance of this first separating brake supervisory relay need be greater than the first co-bit supervisory relay, the resistance of this second separating brake supervisory relay need be greater than the second co-bit supervisory relay.
Embodiment bis-, please refers to Fig. 6 and Fig. 7:
For 110kV and following switch control circuit, mutually corresponding same switch control circuit all of each in its three-phase line, this switch control circuit by point, the link gear of this switching mechanism primary side of closing coil control to be to realize the divide-shut brake of threephase switch.This switch control circuit only includes closing circuit and the first sub-gate circuit, and its broken string domain identification system and method is similar with first group of switch control circuit or second group of switch control circuit in embodiment mono-.
By this high-voltage switch gear control loop broken string domain identification circuit; our maintainer can check the broken string generation area signal (switch region disconnection signal or protection zone disconnection signal) of being reported and submitted by the optocoupler on this circuit by remote monitoring main website; and the maintainer who assigns corresponding specialty removes site disposal broken string; like this; go to together the scene location work of breaking without two groups of professionals; reduce labour, also shortened the broken string processing time, reduced the risk of expansion accident.
The above, only for preferred embodiment of the present invention, therefore can not limit according to this scope of the invention process, the equivalence of doing according to the scope of the claims of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (6)
1.110kV and following switch control circuit broken string domain identification circuit, it is characterized in that: comprising: A, B, C mutually a common corresponding switch control circuit and for generation of with the signal circuit of signal that shows this switch control circuit broken string region, this signal circuit comprises signal circuit one;
This switch control circuit comprises closing circuit, the first sub-gate circuit and give the first power supply of this closing circuit and the first sub-gate circuit power supply, this closing circuit comprises switching mechanism, jump position supervisory relay, there is diagnostic circuit and for judging the combined floodgate supervisory relay of this broken string generation area in the first broken string, this first sub-gate circuit comprises switching mechanism, the first co-bit supervisory relay, there is diagnostic circuit and for judging the first separating brake supervisory relay of this broken string generation area in the first broken string, this the first co-bit supervisory relay and a jumping position supervisory relay all have respectively multipair normally closed auxiliary contact, this combined floodgate supervisory relay and the first separating brake supervisory relay all have respectively multipair normally closed auxiliary contact and the multipair auxiliary contact of often opening, this broken string region comprises switch region and protection zone, this switch region comprises this switching mechanism, this protection zone comprises except the switch control circuit part this switching mechanism,
There is diagnostic circuit and combined floodgate supervisory relay and be connected in series in the two ends of this switching mechanism in first in this closing circuit broken string, and is connected in series in the two ends of this first power supply with this jumping position supervisory relay again;
There is diagnostic circuit and the first separating brake supervisory relay and be connected in series in the two ends of this switching mechanism in first in this first sub-gate circuit broken string, and is connected in series in the two ends of this first power supply with this first co-bit supervisory relay again;
This signal circuit one comprises the first broken string generation diagnostic circuit and broken string regional signal circuit, there is diagnostic circuit and be connected in series this broken string regional signal circuit in this first broken string, this broken string regional signal circuit comprises the switch region disconnection signal circuit and the protection zone disconnection signal circuit that are connected in parallel, this switch region disconnection signal circuit comprises that the first couple that the first couple of the combined floodgate supervisory relay being connected in series often drives auxiliary contact and the first separating brake supervisory relay often drives auxiliary contact, this protection zone disconnection signal circuit comprises first pair of normally closed auxiliary contact of the first separating brake supervisory relay being connected in series, the second couple of combined floodgate supervisory relay often drives auxiliary contact and the second couple of the first separating brake supervisory relay of being connected in series often drives auxiliary contact, first pair of normally closed auxiliary contact of combined floodgate supervisory relay,
There is the normally closed auxiliary contact that diagnostic circuit comprises the normally closed auxiliary contact of the first co-bit supervisory relay being connected in series and jumps position supervisory relay in this first broken string;
There is diagnostic circuit and judge that whether the broken string of this control loop occurs in this first broken string; and determine whether to allow the break region diagnosis of this combined floodgate supervisory relay and the first separating brake supervisory relay; this combined floodgate supervisory relay and the first separating brake supervisory relay contact this signal circuit one by its auxiliary contact, by this switch region disconnection signal circuit and protection zone disconnection signal circuit whether conducting judge the broken string region of this switch control circuit.
2. 110kV according to claim 1 and following switch control circuit broken string domain identification circuit, it is characterized in that: this signal circuit one also comprises power supply monitoring signal circuit, it comprises the second pair of normally closed auxiliary contact of the combined floodgate supervisory relay that is connected in series and second pair of normally closed auxiliary contact of the first separating brake supervisory relay, there is diagnostic circuit and be connected in series in this power supply monitoring signal circuit and this first broken string, and is connected in parallel with this broken string regional signal circuit.
3. 110kV according to claim 1 and following switch control circuit broken string domain identification circuit; it is characterized in that: also comprise the optocoupler for transmitting broken string regional signal, this switch region disconnection signal circuit and protection zone disconnection signal circuit are connected in series respectively an optocoupler.
4. 110kV according to claim 2 and following switch control circuit broken string domain identification circuit; it is characterized in that: also comprise the optocoupler for transmission of signal, this switch region disconnection signal circuit, protection zone disconnection signal circuit, power supply monitoring signal circuit are connected in series respectively an optocoupler.
5.220kV and above switch control circuit broken string domain identification circuit, 110Kv based on described in any one in claim 1 or 4 and following switch control circuit broken string domain identification circuit, it is characterized in that: comprise A, B, C distinguishes three corresponding switch control circuits mutually, this switch control circuit comprises closing circuit, the first sub-gate circuit, the second sub-gate circuit, the first power supply and the second source of powering to this second sub-gate circuit, this second sub-gate circuit comprises switching mechanism, the second separating brake supervisory relay, there is diagnostic circuit in the second co-bit supervisory relay and the second broken string, this closing circuit also comprises the second broken string generation diagnostic circuit, this the second co-bit supervisory relay has multipair normally closed auxiliary contact, the second separating brake supervisory relay has multipair normally closed auxiliary contact and the multipair auxiliary contact of often opening,
There is diagnostic circuit and combined floodgate supervisory relay and be connected in series in the two ends of this switching mechanism in second in this closing circuit broken string, and is connected in series in the two ends of this first power supply with this jumping position supervisory relay; There is diagnostic circuit and the second separating brake supervisory relay and be connected in series in the two ends of this switching mechanism in second in this second sub-gate circuit broken string, and is connected in series in the two ends of this second source with this second co-bit supervisory relay; Wherein: diagnostic circuit occurs this second broken string has and the identical circuit structure of the first broken string generation diagnostic circuit, the normally closed auxiliary contact of its second co-bit supervisory relay to should first broken string there is the normally closed auxiliary contact of the first co-bit supervisory relay of diagnostic circuit;
Also comprise for generation of with the signal circuit of signal that shows corresponding switch control circuit broken string region, this signal circuit comprises signal circuit one and signal circuit two, this signal circuit two has the circuit structure identical with signal circuit one, wherein: the auxiliary contact of the second separating brake supervisory relay in this signal circuit two and the auxiliary contact of the second co-bit supervisory relay are respectively to the auxiliary contact of the first separating brake supervisory relay and the auxiliary contact of the first co-bit supervisory relay in should signal circuit one.
6. high-voltage switch gear control loop broken string domain identification method, 110Kv based on described in any one in claim 1-4 and following switch control circuit broken string domain identification circuit and based on 220Kv claimed in claim 5 and above switch control circuit broken string domain identification circuit, is characterized in that:
When switching mechanism is in operation or when switching mechanism hot stand-by duty, there is control loop switch region broken string, comprising:
Step 11, the jumping position supervisory relay in closing circuit, the equal decompression of co-bit supervisory relay in sub-gate circuit is failure to actuate, and its normally closed auxiliary contact is all in closure state, and there is diagnostic circuit conducting in broken string, and diagnose out this switch control circuit to break;
Step 12, when switch region broken string, between closing circuit switching mechanism two ends, between sub-gate circuit switching mechanism 10 two ends, be equivalent to open circuit and have a potential difference (PD), now jumping position supervisory relay and co-bit supervisory relay is failure to actuate, combined floodgate supervisory relay and the action of separating brake supervisory relay, it often opens auxiliary contact closure, and normally closed auxiliary contact disconnects;
Step 13, because combined floodgate supervisory relay, the separating brake supervisory relay of control loop all move, it often opens auxiliary contact closure, and its normally closed auxiliary contact disconnects, this switch region disconnection signal circuit turn-on, signal circuit produces " the switch region broken string of switch control circuit " signal;
In the time that switch moves, there is control loop protection zone broken string, comprise
Step 21, the jumping position supervisory relay in closing circuit, the equal decompression of co-bit supervisory relay in sub-gate circuit is failure to actuate, and its normally closed auxiliary contact is all in closure state, and there is diagnostic circuit conducting in broken string, and diagnose out this switch control circuit to break;
Step 22, when protection zone broken string, switching mechanism is in co-bit, between the switching mechanism two ends of closing circuit in open-circuit condition and have potential difference (PD), the action of combined floodgate supervisory relay; Because switching mechanism non-fault is in waiting for tripped condition, the loop resistance between the switching mechanism two ends of sub-gate circuit is equivalent to separating brake supervisory relay short circuit can not move much smaller than separating brake supervisory relay;
Step 23, because the action of combined floodgate supervisory relay, separating brake supervisory relay are failure to actuate, it often opens auxiliary contact closure, and normally closed auxiliary contact disconnects, this protection zone disconnection signal circuit turn-on, signal circuit produces " the protection zone broken string of switch control circuit " signal;
When switching mechanism is during in stand-by heat, there is control loop protection zone broken string, comprise
Step 31, jumping position supervisory relay in closing circuit, the equal decompression of co-bit supervisory relay in sub-gate circuit is failure to actuate, and its normally closed auxiliary contact is all in closure state, there is diagnostic circuit conducting in the first broken string, and diagnose out this switch control circuit to break;
, when protection zone broken string, because switching mechanism is being jumped position, between the switching mechanism two ends of sub-gate circuit, itself there is potential difference (PD) in open-circuit condition, the action of separating brake supervisory relay in step 32; Because switching mechanism is without breaking in waiting for "on" position, the loop resistance between the switching mechanism two ends of closing circuit is equivalent to combined floodgate supervisory relay short circuit can not move much smaller than combined floodgate supervisory relay;
Step 33; because the action of separating brake supervisory relay, combined floodgate supervisory relay are failure to actuate, it often opens auxiliary contact closure, and normally closed auxiliary contact disconnects; this protection zone disconnection signal circuit turn-on, signal circuit produces " the protection zone broken string of switch control circuit " signal.
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| CN201410141433.9A CN103941155B (en) | 2014-04-09 | 2014-04-09 | High-voltage switch gear control loop template domain identification circuit and discrimination method |
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