CN2733711Y - Automatic throw-in equipment for comprehensive backup power supply - Google Patents
Automatic throw-in equipment for comprehensive backup power supply Download PDFInfo
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- CN2733711Y CN2733711Y CN 200420031664 CN200420031664U CN2733711Y CN 2733711 Y CN2733711 Y CN 2733711Y CN 200420031664 CN200420031664 CN 200420031664 CN 200420031664 U CN200420031664 U CN 200420031664U CN 2733711 Y CN2733711 Y CN 2733711Y
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Abstract
Disclosed is an integrate automatic throw-in equipment of emergency power supply for power supply lines of electric power substations, which solves existing problems that the coil of a checking current relay is easy to burn, connection points of the checking current relay is unstable, the resistance of a checking current loop is big, and the once automatic throw-in can not be realized. The utility model is characterized in that the AC portion is composed of an AC current return circuit and an AC voltage return circuit, and the DC portion is composed of a starting return circuit, an executive return circuit and a signal circuit in connection. Thus, when the electric voltage and the electric current are disappeared, the reliable movement is endured. Under any conditions, the automatic device only once acts.
Description
Technical field
The utility model is a kind of comprehensive automatic throw-in equipment of emergency power supply that uses in the supply line of electric substation.
Background technology
Because electric substation load is less, for economical operation, best main transformer operation, and if break down this moment and cause the main transformer tripping operation, will cause full the power failure; There are following problem in original circuit, main transformer prepared auto restart: 1, inspection current relay coil easy burn-out; 2, inspection current relay contact is mixed, is fallen down; 3, the impedance of inspection current circuit is big; 4, prepared auto restart can not be realized prepared auto restart one time.
Summary of the invention
The purpose of this utility model is, solves above-mentioned existing problem, provides a kind of safe and reliable to operation, and the operations staff is simple to operate, improves power supply level, reduces the comprehensive automatic throw-in equipment of emergency power supply of line loss.
The utility model is achieved in that AC portion comprises alternating current, ac voltage circuit, and direct current component comprises the startup loop, carries out the loop, and signal circuit connects and composes.
In the alternating current loop, comprise 4,5 contacts of auxiliary relay 1ZJ and 5, the 8 binding posts formation in parallel # 1 main transformer secondary current circuit of current relay 1LJ; 5, the 8 binding posts formation in parallel # 2 main transformer secondary current circuit of 16,17 contacts of auxiliary relay 1ZJ and current relay 1LJ; In ac voltage circuit, 5,8 binding posts of voltage relay 1YJ, 5,8 binding posts of voltage relay 2YJ, 5,8 binding posts of voltage relay 3YJ connect and compose two sections voltage switching circuits of 10KV ABC three-phase; 5,8 binding posts of voltage relay 4YJ, 5,8 binding posts of voltage relay 5YJ, 5,8 binding posts of voltage relay 6YJ connect and compose the 66KV voltage circuit.
Direct current component, in starting the loop, 3,4 of 10KV voltage relay 1YJ closes contact, 3,4 of voltage relay 2YJ closes contact, 3,4 of voltage relay 3YJ closes contact, 3,4 of current relay 1LJ closes contact, 3,4 of current relay 2LJ closes contact, 1,2 of 66KV voltage relay 4YJ opens contact, 1,2 of voltage relay 5YJ leaves contact, and 1,2 of voltage relay 6YJ leaves contact, and 13,14 of auxiliary relay 6ZJ leaves contact, pressing plate 17LP, the binding post 1,13 of time relay 1SJ constitutes main transformer prepared auto restart AC starting loop.3,4 of 10KV voltage relay 1YJ closes contact, 3,4 of voltage relay 2YJ closes contact, 3,4 of voltage relay 3YJ closes contact, 3,4 of current relay 1LJ closes contact, 3,4 of current relay 2LJ closes contact, 3,4 of 66KV voltage relay 4YJ closes contact, 3,4 of voltage relay 5YJ closes contact, 3,4 of voltage relay 6YJ closes contact, 13,14 of auxiliary relay 7ZJ leaves contact, pressing plate 18LP, 1,13 binding posts of time relay 2SJ connect and connect and compose the circuit prepared auto restart with both positive and negative polarity and exchange start loop; 1,2 of 10KV voltage relay 1YJ opens contact, and 1,2 of voltage relay 2YJ leaves contact, and 1,2 of voltage relay 3YJ leaves contact, and 6,18 binding posts of auxiliary relay 1ZJ connect and connect and compose the alternating current-direct current monitoring circuit with both positive and negative polarity; 16,17 of a position relay 1TWJ of #1 main transformer opens contact, 16,17 of #1 main transformer secondary position relay 2TWJ opens contact, 16,17 of a position relay 1TWJ of #2 main transformer opens contact, 16,17 of #2 main transformer secondary position relay 2TWJ opens contact, three pressing plate 1LP, 4,5 of auxiliary relay 6ZJ leaves contact, and 8,9 of auxiliary relay 4ZJ closes contact, and 6,18 binding posts of auxiliary relay 6ZJ connect and connect and compose locking main transformer prepared auto restart loop with both positive and negative polarity; 3,4 of time relay 1SJ opens contact, and 1,6 binding posts of signal relay 1XJ, 6,18 binding posts of auxiliary relay 8ZJ, 6,18 contacts of auxiliary relay 3ZJ connect and connect and compose the trip(ping) circuit of starting main transformer with both positive and negative polarity; 16,17 of #1 line position relay TWJ opens contact, 16,17 of #2 line position relay TWJ opens contact, three pressing plate 2LP, 4,5 of auxiliary relay 7ZJ leaves contact, 8,9 of auxiliary relay 2ZJ closes contact, and 6,18 binding posts of auxiliary relay 7ZJ connect and connect and compose locking circuit prepared auto restart loop with both positive and negative polarity; 5,6 of time relay 1SJ opens contact, and 1,6 binding posts of signal relay 2XJ, 6,18 binding posts of auxiliary relay 4ZJ connect and connect and compose starting main transformer closing circuit with both positive and negative polarity; 3,4 of time relay 2SJ opens contact, and 6,18 binding posts of auxiliary relay 5ZJ connect and connect and compose the trigger circuit trip(ping) circuit with both positive and negative polarity; 5,6 of time relay 2SJ opens contact, and 6,18 binding posts of auxiliary relay 2ZJ connect and connect and compose the trigger circuit closing circuit with both positive and negative polarity;
Carry out in the loop, 5,17 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 3XJ, 2,1 contact of pressing plate 3LP connects and composes a trip(ping) circuit of #1 main transformer; 4,16 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 4XJ, 2,1 contact of pressing plate 4LP connects and composes #1 main transformer secondary trip loop; 3,15 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 5XJ, 2,1 contact of pressing plate 5LP connects and composes a trip(ping) circuit of #2 main transformer; 1,2 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 6XJ, 2,1 contact of pressing plate 6LP connects and composes #2 main transformer secondary trip loop; 1,2 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 7XJ, 2,1 contact of pressing plate 7LP connects and composes #1 main transformer secondary closing circuit; 4,5 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 8XJ, 2,1 contact of pressing plate 8LP connects and composes #1 main transformer secondary closing circuit; 11,10 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 9XJ, 2,1 contact of pressing plate 9LP connects and composes closing circuit of #2 main transformer; 16,17 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 10XJ, 2,1 contact of pressing plate 10LP connects and composes #2 main transformer secondary closing circuit; 4,16 contacts of auxiliary relay 5ZJ, 1,6 binding posts of signal relay 11XJ, 2,1 contact of pressing plate 11LP connects and composes the capacitor trip(ping) circuit; 3,15 contacts of auxiliary relay 5ZJ, 1,6 binding posts of signal relay 12XJ, 2,1 contact of pressing plate 12LP connects and composes the trip(ping) circuit of #1 line; 16,17 contacts of auxiliary relay 2ZJ, 1,6 binding posts of signal relay 13XJ, 2,1 contact of pressing plate 13LP connects and composes #2 line closing circuit; 5,17 contacts of auxiliary relay 5ZJ, 1,6 binding posts of signal relay 14XJ, 2,1 contact of pressing plate 14LP connects and composes the trip(ping) circuit of #2 line; 4,5 contacts of auxiliary relay 2ZJ, 1,6 binding posts of signal relay 15XJ, 2,1 contact of pressing plate 15LP connects and composes #1 line closing circuit; 3,15 contacts of auxiliary relay 8ZJ, 1,6 binding posts of signal relay 16XJ, 2,1 contact of pressing plate 16LP connects and composes the capacitor trip(ping) circuit; 7,10 contacts of auxiliary relay 3ZJ, 2,1 contact of pressing plate 19LP connects and composes #1 main transformer reclosing discharge loop; 13,14 contacts of auxiliary relay 3ZJ, 2,1 contact of pressing plate 20LP connects and composes #2 main transformer reclosing discharge loop; 1,2 contacts of auxiliary relay 5ZJ, 2,1 contact of pressing plate 21LP connects and composes #1 line reclosing discharge loop; 7,10 contacts of auxiliary relay 5ZJ, 2,1 contact of pressing plate 22LP connects and composes #2 line reclosing discharge loop.
In signal circuit, 2,3 of signal relay 1～16XJ leaves contact and signal positive supply+XM, fall board not involution power supply PM connect and compose signal and fall not involution loop of board; 11,12 of auxiliary relay 1ZJ closes contact and is connected with the little bus audio loop of instantaneous advance notice; 9,10 of signal relay 1～16XJ leaves contact and is connected with light mould, the little bus audio loop of instantaneous advance notice.
Technical characterstic of the present utility model is: 1, solve inspection current relay contact bounce problem; The inspection current relay normally is an operate condition, and be to adopt to close contact at backup auto-activating device, owing in the little current relay of routine, can't solve jitter problem, if can not solve the contact bounce problem, little current relay contact is after operation one month, and contact will vibrate and split away off; Normal opened contact at the voltage relay of voltage circuit starts auxiliary relay, with auxiliary relay contact short circuit at normal inspection current relay coil in service two ends, allow the inspection current relay just often be in the loss of excitation state, after the voltage circuit decompression, the inspection current relay could check out whether the loop has electric current, come off with regard to solving inspection current relay contact bounce with this simple way, cause the key issue of backup auto-activating device akinesia.2, solve little current relay coil and burn out problem; Comprehensive prepared auto restart principle must be examined no-voltage, no current; So in the loop, voltage circuit contact and the series connection of current circuit contact are together.So owing to the minimum load of the setting value of little current relay inspection transformer is adjusted, so the relay DL-11/0.6 or the DL-11/2 that adopt, usually the relay that adopts is DL-11/0.6, heat-stable current is that 1 peace is 45 seconds line footpath millimeter 1HE-0.8, series impedance factor 2.72 Europe, because user's load is either large or small, so inspection current relay, when electric current surpasses 1 ampere-hour, the inspection current relay just burns out, so just must adopt just often, the inspection current relay coil is flow through by the auxiliary relay contact with the electric current of auxiliary relay contact by current circuit, burn out problem thereby solved the inspection current relay coil that is in operation.3, solve the problem of the impedance of little current relay; As without the alternating voltage relay; contact starts auxiliary relay, with the short and small current relay coil of intermediate contact, will cause akinesias such as the overcurrent protection that is connected on this loop, fast tripping protection so; electric weight also can be lost in the kilowatt-hour meter loop, and instrument circuit can not normally be indicated.4, comprehensive prepared auto restart automatics mainly is to be equipped with to throw once; When the #1 main transformer moves, when #1 main transformer heat is equipped with, the 1LP pressing plate is put on the #1 main transformer, close contact by position relay of #1 main transformer and start 6ZJ auxiliary relay excitation, by 6ZJ auxiliary relay normal opened contact and the self-sustaining of closing relay normally closed contact by three pressing plates, when the #1 main transformer takes place differential, gas, overcurrent when action, or switch steal jump after, comprehensive prepared auto restart starts, through secondary switch of 5 seconds tripping # 1 main transformers, at this moment, secondary position relay of #1 main transformer closes contact and disconnects, but this moment, the 6ZJ auxiliary relay is also passing through contact 4 own, 5, closing relay contact 8,9 self-sustainings are after 5.5 seconds, the comprehensive backup auto-activating device # 2 main transformer one that closes, behind the secondary switch, closing relay ZJ4 contact 8,9 disconnect, and 6ZJ auxiliary relay loss of excitation has been finished prepared auto restart one time.5, circuit prepared auto restart and the shared AC starting of main transformer prepared auto restart loop; Promptly save relay and can rationally reliably finish the function of circuit prepared auto restart and main transformer prepared auto restart again.Illustrate (1) circuit prepared auto restart, when the working line fault, after the switch tripping, the inspection of main transformer secondary does not have pressure, and inspection does not have stream, but as the 66KV voltage circuit voltage is arranged this moment, and the circuit main transformer is failure to actuate; During 66KV voltage circuit no-voltage, the action of circuit prepared auto restart.Main transformer prepared auto restart ac circuit also is when the operating transformer fault, and the main transformer secondary does not have pressure, do not have stream, and when prepared auto restart 66KV voltage circuit has voltage, the main transformer prepared auto restart just starts; When prepared auto restart 66KV voltage circuit no-voltage, the main transformer prepared auto restart does not just start.6, warning function; Inspection current relay contact bounce can be finished in this loop, burns out problem, can also finish the alternating current-direct current loop, voltage circuit broken string, the warning function of dc insurance fusing; When dc insurance any breaks mutually, can both close contact by closing relay 2ZJ and report to the police, and during the 10KV broken string, also close contact by closing relay 2ZJ simultaneously to report to the police, rationally utilize the multiple function of a relay, simultaneously also stupefied to carry out motor function by signal relay.7, solved and made can not the close a floodgate problem of stand-by power supply of circuit prepared auto restart when the circuit prepared auto restart is jumped machine steathily because of switch.Adopted circuit prepared auto restart self-holding circuit, when the power circuit no-voltage, by circuit prepared auto restart tripping line switching, through the time-delay return time of the auxiliary relay 7ZJ extension wire switch that closes; And when the power circuit switch is jumped steathily; the position relay of power circuit protection disconnects auxiliary relay 7ZJ earlier; just stand-by power supply can not have been closed a floodgate; must increase self-holding circuit; make auxiliary relay 7ZJ drive contact and closing relay close the contact self-sustaining; just often; the normally closed contact of position relay starts auxiliary relay 7ZJ action by the 2LP pressing plate; contact own closes the contact self-sustaining by closing relay; when the power circuit switch is jumped steathily; the position relay normally closed contact disconnects; this moment auxiliary relay 7ZJ also by contact own and closing relay close the contact self-sustaining, behind the stand-by power supply that closes, the contact that closes of closing relay disconnects; auxiliary relay 7Z is loss of excitation, guarantees circuit prepared auto restart action message.
Description of drawings
Fig. 1 is a circuit block-diagram of the present utility model;
Fig. 2 is a #1 main transformer secondary AC current circuit;
Fig. 3 is a #2 main transformer secondary AC current circuit;
Fig. 4 is two sections voltage switching circuits of 10KV ABC three-phase;
Fig. 5 is the 66KV ac voltage circuit;
Fig. 6 is for starting the loop;
Fig. 7 is for carrying out the loop;
Fig. 8 is a signal circuit;
Embodiment
Describe in detail below in conjunction with accompanying drawing: as shown in the figure, AC portion comprises alternating current, ac voltage circuit, and direct current component comprises the startup loop, carries out the loop, and signal circuit connects and composes.
In the alternating current loop, comprise 4,5 contacts of auxiliary relay 1ZJ and 5, the 8 binding posts formation in parallel # 1 main transformer secondary current circuit of current relay 1LJ; 5, the 8 binding posts formation in parallel # 2 main transformer secondary current circuit of 16,17 contacts of auxiliary relay 1ZJ and current relay 1LJ; In ac voltage circuit, 5,8 binding posts of voltage relay 1YJ, 5,8 binding posts of voltage relay 2YJ, 5,8 binding posts of voltage relay 3YJ connect and compose two sections voltage switching circuits of 10KV ABC three-phase; 5,8 binding posts of voltage relay 4YJ, 5,8 binding posts of voltage relay 5YJ, 5,8 binding posts of voltage relay 6YJ connect and compose the 66KV voltage circuit.
Direct current component, in starting the loop, 3,4 of 10KV voltage relay 1YJ closes contact, 3,4 of voltage relay 2YJ closes contact, 3,4 of voltage relay 3YJ closes contact, 3,4 of current relay 1LJ closes contact, 3,4 of current relay 2LJ closes contact, 1,2 of 66KV voltage relay 4YJ opens contact, 1,2 of voltage relay 5YJ leaves contact, and 1,2 of voltage relay 6YJ leaves contact, and 13,14 of auxiliary relay 6ZJ leaves contact, pressing plate 17LP, the binding post 1,13 of time relay 1SJ constitutes main transformer prepared auto restart AC starting loop.3,4 of 10KV voltage relay 1YJ closes contact, 3,4 of voltage relay 2YJ closes contact, 3,4 of voltage relay 3YJ closes contact, 3,4 of current relay 1LJ closes contact, 3,4 of current relay 2LJ closes contact, 3,4 of 66KV voltage relay 4YJ closes contact, 3,4 of voltage relay 5YJ closes contact, 3,4 of voltage relay 6YJ closes contact, 13,14 of auxiliary relay 7ZJ leaves contact, pressing plate 18LP, 1,13 binding posts of time relay 2SJ connect and connect and compose the circuit prepared auto restart with both positive and negative polarity and exchange start loop; 1,2 of 10KV voltage relay 1YJ opens contact, and 1,2 of voltage relay 2YJ leaves contact, and 1,2 of voltage relay 3YJ leaves contact, and 6,18 binding posts of auxiliary relay 1ZJ connect and connect and compose the alternating current-direct current monitoring circuit with both positive and negative polarity; 16,17 of a position relay 1TWJ of #1 main transformer opens contact, 16,17 of #1 main transformer secondary position relay 2TWJ opens contact, 16,17 of a position relay 1TWJ of #2 main transformer opens contact, 16,17 of #2 main transformer secondary position relay 2TWJ opens contact, three pressing plate 1LP, 4,5 of auxiliary relay 6ZJ leaves contact, and 8,9 of auxiliary relay 4ZJ closes contact, and 6,18 binding posts of auxiliary relay 6ZJ connect and connect and compose locking main transformer prepared auto restart loop with both positive and negative polarity; 3,4 of time relay 1SJ opens contact, and 1,6 binding posts of signal relay 1XJ, 6,18 binding posts of auxiliary relay 8ZJ, 6,18 contacts of auxiliary relay 3ZJ connect and connect and compose the trip(ping) circuit of starting main transformer with both positive and negative polarity; 16,17 of #1 line position relay TWJ opens contact, 16,17 of #2 line position relay TWJ opens contact, three pressing plate 2LP, 4,5 of auxiliary relay 7ZJ leaves contact, 8,9 of auxiliary relay 2ZJ closes contact, and 6,18 binding posts of auxiliary relay 7ZJ connect and connect and compose locking circuit prepared auto restart loop with both positive and negative polarity; 5,6 of time relay 1SJ opens contact, and 1,6 binding posts of signal relay 2XJ, 6,18 binding posts of auxiliary relay 4ZJ connect and connect and compose starting main transformer closing circuit with both positive and negative polarity; 3,4 of time relay 2SJ opens contact, and 6,18 binding posts of auxiliary relay 5ZJ connect and connect and compose the trigger circuit trip(ping) circuit with both positive and negative polarity; 5,6 of time relay 2SJ opens contact, and 6,18 binding posts of auxiliary relay 2ZJ connect and connect and compose the trigger circuit closing circuit with both positive and negative polarity;
Carry out in the loop, 5,17 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 3XJ, 2,1 contact of pressing plate 3LP connects and composes a trip(ping) circuit of #1 main transformer; 4,16 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 4XJ, 2,1 contact of pressing plate 4LP connects and composes #1 main transformer secondary trip loop; 3,15 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 5XJ, 2,1 contact of pressing plate 5LP connects and composes a trip(ping) circuit of #2 main transformer; 1,2 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 6XJ, 2,1 contact of pressing plate 6LP connects and composes #2 main transformer secondary trip loop; 1,2 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 7XJ, 2,1 contact of pressing plate 7LP connects and composes #1 main transformer secondary closing circuit; 4,5 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 8XJ, 2,1 contact of pressing plate 8LP connects and composes #1 main transformer secondary closing circuit; 11,10 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 9XJ, 2,1 contact of pressing plate 9LP connects and composes closing circuit of #2 main transformer; 16,17 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 10XJ, 2,1 contact of pressing plate 10LP connects and composes #2 main transformer secondary closing circuit; 4,16 contacts of auxiliary relay 5ZJ, 1,6 binding posts of signal relay 11XJ, 2,1 contact of pressing plate 11LP connects and composes the capacitor trip(ping) circuit; 3,15 contacts of auxiliary relay 5ZJ, 1,6 binding posts of signal relay 12XJ, 2,1 contact of pressing plate 12LP connects and composes the trip(ping) circuit of #1 line; 16,17 contacts of auxiliary relay 2ZJ, 1,6 binding posts of signal relay 13XJ, 2,1 contact of pressing plate 13LP connects and composes #2 line closing circuit; 5,17 contacts of auxiliary relay 5ZJ, 1,6 binding posts of signal relay 14XJ, 2,1 contact of pressing plate 14LP connects and composes the trip(ping) circuit of #2 line; 4,5 contacts of auxiliary relay 2ZJ, 1,6 binding posts of signal relay 15XJ, 2,1 contact of pressing plate 15LP connects and composes #1 line closing circuit; 3,15 contacts of auxiliary relay 8ZJ, 1,6 binding posts of signal relay 16XJ, 2,1 contact of pressing plate 16LP connects and composes the capacitor trip(ping) circuit; 7,10 contacts of auxiliary relay 3ZJ, 2,1 contact of pressing plate 19LP connects and composes #1 main transformer reclosing discharge loop; 13,14 contacts of auxiliary relay 3ZJ, 2,1 contact of pressing plate 20LP connects and composes #2 main transformer reclosing discharge loop; 1,2 contacts of auxiliary relay 5ZJ, 2,1 contact of pressing plate 21LP connects and composes #1 line reclosing discharge loop; 7,10 contacts of auxiliary relay 5ZJ, 2,1 contact of pressing plate 22LP connects and composes #2 line reclosing discharge loop.
In signal circuit, 2,3 of signal relay 1～16XJ leaves contact and signal positive supply+XM, fall board not involution power supply PM connect and compose signal and fall not involution loop of board; 11,12 of auxiliary relay 1ZJ closes contact and is connected with the little bus audio loop of instantaneous advance notice and sends the tinkle of bells, sound equipment, and is bright with the time mould, sends prepared auto restart alternating current-direct current disappearance of signal.9,10 of signal relay 1～16XJ leaves contact and is connected with light mould, the little bus audio loop of instantaneous advance notice and sends circuit prepared auto restart and main transformer prepared auto restart actuating signal.
One, this device is used for transformer operation of electric substation, when another transformer heat is equipped with, for example: certain # 1 of electric substation transformer operation, when #2 transformer heat is equipped with, current relay 1LJ becomes secondary at #1, current relay 2LJ becomes secondary at #2, and just often two current relay coils are failure to actuate by the contact short circuit event of opening of intermediate relay ZJ 1.Only at transformer fault, the 66KV bus has voltage, and main transformer secondary no-voltage, and auxiliary relay 1ZJ coil loss of excitation, normal opened contact are opened, and current relay 1LJ, current relay 2LJ check transformer secondary, really just starts this device during no current.Be provided with three voltage relays of 66KV and three voltage relays of 10KV voltage circuit and check the startup loop of operating transformer in voltage circuit, the 66KV bus has voltage, and behind the main transformer secondary no-voltage, starts this device by auxiliary relay 1ZJ loss of excitation.In DC loop, current relay 1LJ, current relay 2LJ normally closed contact are connected.Three voltage relays of 10KV voltage circuit are just often, three normally closed contacts disconnect, only at 10KV voltage circuit no-voltage, main transformer secondary no current, auxiliary relay 1ZJ loss of excitation and check current relay 1LJ, current relay 2LJ no current after, by three voltage relay normal opened contacts of 66KV relay start-up time 1SJ, this device just starts.
When the operation of #1 transformer, when #2 transformer heat was equipped with, the 17LP pressing plate placed on the pressing plate of #1 main transformer position.3LP, 4LP pressing plate insert the tripping operation pressing plate, and 9LP, 10LP pressing plate insert and close #2 main transformer one secondary switch press plate, and the 16LP pressing plate is linked into jumps on the capacitor pressing plate, and the 19LP pressing plate closes a floodgate after being linked into the #1 main transformer; The YJ of 10KV voltage circuit (AB, BC, CA) coil magnetization, time relay 1SJ can not start.#1 main transformer one secondary switch is in "on" position simultaneously, and #1 main transformer one secondary position contact is connected auxiliary relay 1ZJ excitation.When #1 main transformer fault, main transformer secondary I section voltage circuit no-voltage, current relay 1LJ, current relay 2LJ no current; When the 66KV voltage circuit has voltage, start-up time relay 1SJ, the self- cleaning contact 3,4 of time relay 1SJ was connected, enabling signal relay 1XJ starts auxiliary relay 3ZJ, 8ZJ simultaneously; Tripping #1 main transformer one secondary switch discharges to reclosing simultaneously.Time relay 1SJ stops contact 5,6 and connects back enabling signal relay 2XJ, send switching signal and start combined floodgate auxiliary relay 4ZJ, close a floodgate in #2 main transformer one secondary switch, auxiliary relay 6ZJ is after the one secondary switch tripping of #1 main transformer, #1 main transformer one secondary position exciting contact disconnects, the contact 4,5 of auxiliary relay 6ZJ own, the self-sustaining of combined floodgate auxiliary relay 4ZJ normally closed contact.Only guarantee that #2 main transformer one secondary switch closes a floodgate, after 0.5 second, auxiliary relay 6ZJ loss of excitation guarantees that the prepared auto restart automatics only acts on once, hauls oneself willingly on the #2 main transformer.
When two, this device is used for the circuit prepared auto restart;
Pressing plate 2LP, 18LP drop into, and when #1 or the operation of #2 power circuit, during another Standby Line, the circuit prepared auto restart starts.When the power circuit no-voltage, during no current, or the power circuit switch is when jumping steathily, 10KV voltage circuit no-voltage, the current relay 1LJ of main transformer secondary, current relay 2LJ no current, simultaneously during 66KV voltage circuit no-voltage, 10KV voltage circuit no-voltage (YJAB, BC, CA) relay normally closed contact is connected, and current relay 1LJ, current relay 2LJ normally closed contact are connected, 66KV voltage circuit YJAB, BC, CA relay normally closed contact are connected, start-up time relay 2SJ.
Time relay 2SJ self- cleaning contact 3,4 is connected, and starts auxiliary relay 5ZJ, and pressing plate 12LP, 14LP close, and make #1, #2 power circuit switch trip, and pressing plate 21LP, 22LP close, and to the reclosing discharge, pressing plate 11LP closes and discharges to capacitor; When time relay 2SJ stops contact 5,6 connections, start combined floodgate auxiliary relay 2ZJ, close a floodgate in extension wire; Auxiliary relay 7ZJ is that the position relay of stand-by power supply route protection starts, and auxiliary relay 7ZJ is by normal opened contact 4,5 own, 8,9 self-sustainings of combined floodgate auxiliary relay 2ZJ normally closed contact; When the tripping of power circuit switch, auxiliary relay 7ZJ is in operate condition, is only guaranteeing just loss of excitation of stand-by power supply combined floodgate back auxiliary relay 7ZJ.In addition, auxiliary relay 7ZJ self-holding circuit mainly is to guarantee that the power circuit switch jumps the situation situation extension wire switch that reliably closes a floodgate steathily, if do not add self-holding circuit, when the power circuit switch was jumped steathily, power circuit holding position relay disconnected too early, made auxiliary relay 7ZJ loss of excitation.Disconnected circuit prepared auto restart, AC starting loop,, guaranteed the backup auto-activating device correct operation so the extension wire switch that can not close a floodgate in current circuit prepared auto restart automatics, must increase self-holding circuit.
Claims (1)
1, a kind of comprehensive automatic throw-in equipment of emergency power supply that in the supply line of electric substation, uses; It is characterized in that AC portion comprises alternating current, ac voltage circuit, direct current component comprises the startup loop, carries out the loop, and signal circuit connects and composes;
In the alternating current loop, 5, the 8 binding posts formation in parallel #1 main transformer secondary current circuit of 4,5 contacts of auxiliary relay 1ZJ and current relay 1LJ; 5, the 8 binding posts formation in parallel #2 main transformer secondary current circuit of 16,17 contacts of auxiliary relay 1ZJ and current relay 1LJ; In ac voltage circuit, 5,8 binding posts of voltage relay 1YJ, 5,8 binding posts of voltage relay 2YJ, 5,8 binding posts of voltage relay 3YJ connect and compose two sections voltage switching circuits of 10KV ABC three-phase; 5,8 binding posts of voltage relay 4YJ, 5,8 binding posts of voltage relay 5YJ, 5,8 binding posts of voltage relay 6YJ connect and compose the 66KV voltage circuit;
Direct current component, in starting the loop, 3,4 of 10KV voltage relay 1YJ closes contact, 3,4 of voltage relay 2YJ closes contact, 3,4 of voltage relay 3YJ closes contact, 3,4 of current relay 1LJ closes contact, 3,4 of current relay 2LJ closes contact, 1,2 of 66KV voltage relay 4YJ opens contact, 1,2 of voltage relay 5YJ leaves contact, and 1,2 of voltage relay 6YJ leaves contact, and 13,14 of auxiliary relay 6ZJ leaves contact, pressing plate 17LP, the binding post 1,13 of time relay 1SJ constitutes main transformer prepared auto restart AC starting loop.3,4 of 10KV voltage relay 1YJ closes contact, 3,4 of voltage relay 2YJ closes contact, 3,4 of voltage relay 3YJ closes contact, 3,4 of current relay 1LJ closes contact, 3,4 of current relay 2LJ closes contact, 3,4 of 66KV voltage relay 4YJ closes contact, 3,4 of voltage relay 5YJ closes contact, 3,4 of voltage relay 6YJ closes contact, 13,14 of auxiliary relay 7ZJ leaves contact, pressing plate 18LP, 1,13 binding posts of time relay 2SJ connect and connect and compose the circuit prepared auto restart with both positive and negative polarity and exchange start loop; 1,2 of 10KV voltage relay 1YJ opens contact, and 1,2 of voltage relay 2YJ leaves contact, and 1,2 of voltage relay 3YJ leaves contact, and 6,18 binding posts of auxiliary relay 1ZJ connect and connect and compose the alternating current-direct current monitoring circuit with both positive and negative polarity; 16,17 of a position relay 1TWJ of #1 main transformer opens contact, 16,17 of #1 main transformer secondary position relay 2TWJ opens contact, 16,17 of a position relay 1TWJ of #2 main transformer opens contact, 16,17 of #2 main transformer secondary position relay 2TWJ opens contact, three pressing plate 1LP, 4,5 of auxiliary relay 6ZJ leaves contact, and 8,9 of auxiliary relay 4ZJ closes contact, and 6,18 binding posts of auxiliary relay 6ZJ connect and connect and compose locking main transformer prepared auto restart loop with both positive and negative polarity; 3,4 of time relay 1SJ opens contact, and 1,6 binding posts of signal relay 1XJ, 6,18 binding posts of auxiliary relay 8ZJ, 6,18 contacts of auxiliary relay 3ZJ connect and connect and compose the trip(ping) circuit of starting main transformer with both positive and negative polarity; 16,17 of #1 line position relay TWJ opens contact, 16,17 of #2 line position relay TWJ opens contact, three pressing plate 2LP, 4,5 of auxiliary relay 7ZJ leaves contact, 8,9 of auxiliary relay 2ZJ closes contact, and 6,18 binding posts of auxiliary relay 7ZJ connect and connect and compose locking circuit prepared auto restart loop with both positive and negative polarity; 5,6 of time relay 1SJ opens contact, and 1,6 binding posts of signal relay 2XJ, 6,18 binding posts of auxiliary relay 4ZJ connect and connect and compose starting main transformer closing circuit with both positive and negative polarity; 3,4 of time relay 2SJ opens contact, and 6,18 binding posts of auxiliary relay 5ZJ connect and connect and compose the trigger circuit trip(ping) circuit with both positive and negative polarity; 5,6 of time relay 2SJ opens contact, and 6,18 binding posts of auxiliary relay 2ZJ connect and connect and compose the trigger circuit closing circuit with both positive and negative polarity;
Carry out in the loop, 5,17 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 3XJ, 2,1 contact of pressing plate 3LP connects and composes a trip(ping) circuit of #1 main transformer; 4,16 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 4XJ, 2,1 contact of pressing plate 4LP connects and composes #1 main transformer secondary trip loop; 3,15 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 5XJ, 2,1 contact of pressing plate 5LP connects and composes a trip(ping) circuit of #2 main transformer; 1,2 contacts of auxiliary relay 3ZJ, 1,6 binding posts of signal relay 6XJ, 2,1 contact of pressing plate 6LP connects and composes #2 main transformer secondary trip loop; 1,2 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 7XJ, 2,1 contact of pressing plate 7LP connects and composes #1 main transformer secondary closing circuit; 4,5 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 8XJ, 2,1 contact of pressing plate 8LP connects and composes #1 main transformer secondary closing circuit; 11,10 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 9XJ, 2,1 contact of pressing plate 9LP connects and composes closing circuit of #2 main transformer; 16,17 contacts of auxiliary relay 4ZJ, 1,6 binding posts of signal relay 10XJ, 2,1 contact of pressing plate 10LP connects and composes #2 main transformer secondary closing circuit; 4,16 contacts of auxiliary relay 5ZJ, 1,6 binding posts of signal relay 11XJ, 2,1 contact of pressing plate 11LP connects and composes the capacitor trip(ping) circuit; 3,15 contacts of auxiliary relay 5ZJ, 1,6 binding posts of signal relay 12XJ, 2,1 contact of pressing plate 12LP connects and composes the trip(ping) circuit of #1 line; 16,17 contacts of auxiliary relay 2ZJ, 1,6 binding posts of signal relay 13XJ, 2,1 contact of pressing plate 13LP connects and composes #2 line closing circuit; 5,17 contacts of auxiliary relay 5ZJ, 1,6 binding posts of signal relay 14XJ, 2,1 contact of pressing plate 14LP connects and composes the trip(ping) circuit of #2 line; 4,5 contacts of auxiliary relay 2ZJ, 1,6 binding posts of signal relay 15XJ, 2,1 contact of pressing plate 15LP connects and composes #1 line closing circuit; 3,15 contacts of auxiliary relay 8ZJ, 1,6 binding posts of signal relay 16XJ, 2,1 contact of pressing plate 16LP connects and composes the capacitor trip(ping) circuit; 7,10 contacts of auxiliary relay 3ZJ, 2,1 contact of pressing plate 19LP connects and composes #1 main transformer reclosing discharge loop; 13,14 contacts of auxiliary relay 3ZJ, 2,1 contact of pressing plate 20LP connects and composes #2 main transformer reclosing discharge loop; 1,2 contacts of auxiliary relay 5ZJ, 2,1 contact of pressing plate 21LP connects and composes #1 line reclosing discharge loop; 7,10 contacts of auxiliary relay 5ZJ, 2,1 contact of pressing plate 22LP connects and composes #2 line reclosing discharge loop;
In signal circuit, 2,3 of signal relay 1～16XJ leaves contact and signal positive supply+XM, fall board not involution power supply PM connect and compose signal and fall not involution loop of board; 11,12 of auxiliary relay 1ZJ closes contact and is connected with the little bus audio loop of instantaneous advance notice; 9,10 of signal relay 1～16XJ leaves contact and is connected with light mould, the little bus audio loop of instantaneous advance notice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031664 CN2733711Y (en) | 2004-05-19 | 2004-05-19 | Automatic throw-in equipment for comprehensive backup power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031664 CN2733711Y (en) | 2004-05-19 | 2004-05-19 | Automatic throw-in equipment for comprehensive backup power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2733711Y true CN2733711Y (en) | 2005-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420031664 Expired - Fee Related CN2733711Y (en) | 2004-05-19 | 2004-05-19 | Automatic throw-in equipment for comprehensive backup power supply |
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| CN (1) | CN2733711Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578390A (en) * | 2015-01-16 | 2015-04-29 | 广东申菱空调设备有限公司 | Double-power-supply automatic switching device and control method thereof |
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2004
- 2004-05-19 CN CN 200420031664 patent/CN2733711Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578390A (en) * | 2015-01-16 | 2015-04-29 | 广东申菱空调设备有限公司 | Double-power-supply automatic switching device and control method thereof |
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