CN102751783A - Switching circuit for power supplies of high-power diesel engine generator and transformer - Google Patents

Switching circuit for power supplies of high-power diesel engine generator and transformer Download PDF

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Publication number
CN102751783A
CN102751783A CN2012102560225A CN201210256022A CN102751783A CN 102751783 A CN102751783 A CN 102751783A CN 2012102560225 A CN2012102560225 A CN 2012102560225A CN 201210256022 A CN201210256022 A CN 201210256022A CN 102751783 A CN102751783 A CN 102751783A
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CN
China
Prior art keywords
power supply
switch
circuit breaker
uninterrupted power
live wire
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Granted
Application number
CN2012102560225A
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Chinese (zh)
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CN102751783B (en
Inventor
袁为银
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State Grid Corp of China SGCC
Pingdingshan Power Supply Co of State Grid Henan Electric Power Co Ltd
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Wisdri Engineering and Research Incorporation Ltd
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Priority to CN201210256022.5A priority Critical patent/CN102751783B/en
Publication of CN102751783A publication Critical patent/CN102751783A/en
Application granted granted Critical
Publication of CN102751783B publication Critical patent/CN102751783B/en
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Abstract

The invention relates to a switching circuit for power supplies of a high-power diesel engine generator and a transformer. The switching circuit comprises a transformer, a diesel engine generator, a control circuit and an electric equipment power supply bus, wherein a second side incoming wire of the transformer and an incoming wire of the diesel engine generator are respectively connected with the electric equipment power supply bus; a first no-voltage relay, a first breaker and a first current transformer set are arranged between the transformer and the electric equipment power supply bus; a second no-voltage relay, a second breaker and a second current transformer set are arranged between the diesel engine generator and the electric equipment power supply bus; a mechanical interlock and an electric interlock are adopted by main switches of the first breaker and a second breaker; the first current transformer set and a first comprehensive instrument are connected; the second current transformer set and a second comprehensive instrument are connected; and the first comprehensive instrument and the second comprehensive instrument are connected with an uninterruptible power supply. The timely power supply of a power system can be guaranteed by the switching circuit.

Description

The commutation circuit of transformer and high-power diesel generator power supply
Technical field
The present invention relates to a kind of commutation circuit, relate in particular to the commutation circuit of a kind of transformer and high-power diesel generator power supply.
Background technology
Because industry and the many relations with electric unit or equipment operation importance of civil area do not allow to have a power failure for a long time or can only have a power failure in short-term.When high voltage source is cut off the power supply or is broken down, adopt usually and provide the diesel engine generator generating for oneself, starting diesel engine generator generally has two kinds of methods, the most simply manually boots, and second kind is to start diesel engine automatically to supply power.Manually boot and lean on manual operation fully, behind the disconnection transformer side service entrance switch, manually boot diesel engine generator, after diesel engine generator is stable, manual closing operation diesel engine generator inlet wire main switch, diesel engine generator is supplied power to the user.Automatically to start the diesel engine generator scheme many and mix, have to adopt relay system control, also have and adopt microchip to control.Adopt the too complicated of relay system control, though adopt the simple of microchip control, flexibility is relatively poor.
Summary of the invention
Technical problem to be solved by this invention provides the commutation circuit of a kind of transformer and high-power diesel generator power supply; This commutation circuit can guarantee when transformer primary side high pressure (like 10kV) power down; Can perhaps manually drop into diesel engine generator (AC380V) automatically, the guarantee using electricity system is in time supplied power.
The technical scheme that the present invention adopted is: the commutation circuit of a kind of transformer and high-power diesel generator power supply, comprise transformer, diesel engine generator, control circuit and power consumption equipment power supply buses,
The secondary side inlet wire of described transformer and the inlet wire of diesel engine generator are connected with the power consumption equipment power supply buses respectively;
Between transformer and power consumption equipment power supply buses, be provided with first no-voltage relay, first circuit breaker and the first current transformer group;
Between diesel engine generator and power consumption equipment power supply buses, be provided with second no-voltage relay, second circuit breaker and the second current transformer group;
The main switch of described first circuit breaker and second circuit breaker adopts mechanical interlocked and electrical interlocks;
The described first current transformer group is connected with first integrative instrument, and described first integrative instrument is connected with the secondary side inlet wire of transformer through the first fuse group;
The described second current transformer group is connected with second integrative instrument, and described second integrative instrument is connected with the inlet wire of diesel engine generator through the second fuse group;
Described first integrative instrument is connected with uninterrupted power supply with second integrative instrument;
Described control circuit is connected with the control bus of first circuit breaker, and described control circuit comprises live wire and the ground wire of controlling bus; Described live wire, is connected with ground wire again with the coil of first auxiliary relay and being connected in parallel of first red eye with after first no-voltage relay is connected at last; Described live wire, is connected with ground wire again with the coil of second auxiliary relay and being connected in parallel of second red eye with after second no-voltage relay is connected at last; Described live wire, is connected with ground wire again with the coil of the 3rd auxiliary relay and being connected in parallel of first greensignal light with after the switch of the normal run signal of diesel engine generator of diesel engine generator control cabinet is connected at last;
After being connected in series of the normally closed switch of the live wire of described uninterrupted power supply and first circuit breaker and energy storage motor, be connected with the zero line of uninterrupted power supply again; After the closing coil of the normally closed switch of the live wire of described uninterrupted power supply and first switch knob, second circuit breaker, the normal open switch of the 4th auxiliary relay, first circuit breaker is connected in series, be connected with the zero line of uninterrupted power supply again; After being connected in series of the shunt opening trip coil of the live wire of described uninterrupted power supply and first opening button and first circuit breaker, be connected with the zero line of uninterrupted power supply again; After being connected in series of the shunt opening trip coil of the normal open switch of the live wire of described uninterrupted power supply and first change over switch, first auxiliary relay, the normal open switch of the 3rd auxiliary relay, first circuit breaker, be connected with the zero line of uninterrupted power supply again; The live wire of described uninterrupted power supply is with after first change over switch is connected; Again with being connected in parallel of the normal open switch of first ACK button and the 5th auxiliary relay after; Again with after first cancel button is connected; With the coil of the 5th auxiliary relay and being connected in parallel of the first white signal lamp, be connected with the zero line of uninterrupted power supply at last again; The live wire of described uninterrupted power supply is with after second amber lamp is connected, and is connected with the normal open switch of the 3rd coupled switch of first circuit breaker again, is connected with the zero line of uninterrupted power supply at last; The live wire of described uninterrupted power supply is with after the coil of the 4th auxiliary relay is connected, and is connected with the normal open switch of the 3rd coupled switch of first circuit breaker again, is connected with the zero line of uninterrupted power supply at last;
The live wire of described uninterrupted power supply is connected with the zero line of uninterrupted power supply with after the normally closed switch of second circuit breaker is connected again; After the closing coil of the normal open switch of the normal open switch of the live wire of described uninterrupted power supply and first change over switch, first auxiliary relay, the normal open switch of the 3rd auxiliary relay, the 6th auxiliary relay, the normally closed switch of first circuit breaker, second circuit breaker is connected, be connected with the zero line of uninterrupted power supply again; After the closing coil of the normal open switch of the live wire of described uninterrupted power supply and second switch knob, the 6th auxiliary relay, the normally closed switch of first circuit breaker, second circuit breaker is connected, be connected with the zero line of uninterrupted power supply again; After being connected in series of the shunt opening trip coil of the live wire of described uninterrupted power supply and second opening button and second circuit breaker, be connected with the zero line of uninterrupted power supply again; The live wire of described uninterrupted power supply, is connected with the zero line of uninterrupted power supply again with the coil of the 8th auxiliary relay and being connected in parallel of second greensignal light with after the normal open switch of first coupled switch of second circuit breaker is connected at last; After being connected in series of the normally closed switch of first coupled switch of the live wire of described uninterrupted power supply and second circuit breaker and the 3rd red eye, be connected with the zero line of uninterrupted power supply again; After being connected in series of the normal open switch of the 3rd coupled switch of the live wire of described uninterrupted power supply and the 3rd amber lamp and second circuit breaker, be connected with the zero line of uninterrupted power supply again; After being connected in series of the normally closed switch of the 3rd coupled switch of the coil of the live wire of described uninterrupted power supply and the 6th auxiliary relay, second circuit breaker, be connected with the zero line of uninterrupted power supply again; The live wire of described uninterrupted power supply is with after first change over switch is connected; Again with being connected in parallel of the normal open switch of second ACK button and the 7th auxiliary relay after; With after second cancel button is connected, the coil with the 7th auxiliary relay is connected again, is connected with the zero line of uninterrupted power supply at last again.
Press such scheme, control circuit also includes two branch roads, first branch road for the live wire of control bus with after the switch of the diesel engine generator fault-signal of diesel engine generator control cabinet is connected, be connected with first amber lamp again, last with control the bus ground wire and be connected; Second branch road is for after being connected in series of the normal open switch of the normally closed switch of control bus live wire and second auxiliary relay, the 8th auxiliary relay and the first blue signal lamp, again with control the bus ground wire and be connected.
Press such scheme, the live wire of described uninterrupted power supply is connected with the zero line of uninterrupted power supply with after normal open switch, the 3rd green lamp of first coupled switch of first circuit breaker are connected successively again; The live wire of described uninterrupted power supply is connected with the zero line of uninterrupted power supply with after normally closed switch, the quatre chrominance signal lamp of first coupled switch of first circuit breaker are connected successively again.
Circuit diagram of the present invention is from practicality and solid angle, adopts the conventional means of relay control system, combines automatic power and switches and two kinds of control models of manual power switching, makes things convenient for the user to select and manages.Particularly when automatic mode, when the transformer side primary voltage is lower than rated voltage 75% (under-voltage), also can realize automatically switching to the diesel engine power supply, prevent the damage of low-voltage some power consumption equipment.This circuit diagram provides the reliable scheme that can solve relevant issues of a practicality.
Beneficial effect of the present invention is: 1, can be implemented in the switching of supply transformer and high-power diesel generator power supply under the power failure situation, guarantee user's power supply.2, adopt the conventional means of relay control system, combine automatic power and switch and two kinds of control models of manual power switching, make things convenient for the user to select and manage.3, when automatic mode, when the transformer side primary voltage is lower than rated voltage 75% (under-voltage), also can realize automatically switching to the diesel engine power supply, prevented the damage of low-voltage to some power consumption equipment.
Description of drawings
Fig. 1 is main loop circuit figure of the present invention.
Fig. 2 is a control loop circuit diagram of the present invention.
Fig. 3 is the circuit diagram of first circuit breaker among the present invention.
Fig. 4 is the circuit diagram of second circuit breaker among the present invention.
Among the figure: F02, first no-voltage relay, F03, second no-voltage relay, P11, first integrative instrument, P12, second integrative instrument; Q11, first circuit breaker, Q12, second circuit breaker, T11, T12, T13, the first current transformer group, T14, T15, T16, the second current transformer group; F17, the first fuse group, F110, the second fuse group, K21, first auxiliary relay, H21, first red eye; K22, second auxiliary relay, H22, second red eye, the switch of the normal run signal of diesel engine generator of Kr diesel engine generator control cabinet, K23, the 3rd auxiliary relay; H23, first greensignal light, S31, first switch knob, K31, the 4th auxiliary relay, the closing coil of Y1, first circuit breaker; S32, first opening button, the shunt opening trip coil of F2, first circuit breaker, S35, first change over switch, S33, first ACK button; K32, the 5th auxiliary relay, S34, first cancel button, H34, the first white signal lamp, H33, second amber lamp; H31, the 3rd green lamp, H32, quatre chrominance signal lamp, the switch of the diesel engine generator fault-signal of Kf, diesel engine generator control cabinet, H24, first amber lamp; K43, the 8th auxiliary relay, H25, the first blue signal lamp, K41, the 6th auxiliary relay, the closing coil of Y11, second circuit breaker; S41, second switch knob, S42, second opening button, the shunt opening trip coil of F22, second circuit breaker, H41, second greensignal light; H42, the 3rd red eye, H43, the 3rd amber lamp, S43, second ACK button; K42, the 7th auxiliary relay, S44, second cancel button, Q31, the first control loop lead-in circuit breaker; The sub-gate signal contact of Q12-S2, second circuit breaker Q 12, Q41, the second control loop lead-in circuit breaker, the sub-gate signal contact of Q11-S2, first circuit breaker Q 11.
Embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the commutation circuit of a kind of transformer and high-power diesel generator power supply comprises transformer, diesel engine generator, control circuit and power consumption equipment power supply buses,
The secondary side inlet wire of described transformer and the inlet wire of diesel engine generator are connected with the power consumption equipment power supply buses respectively;
Between transformer and power consumption equipment power supply buses, be provided with the first no-voltage relay F02, first circuit breaker Q 11 and the first current transformer group T11-T13;
Between diesel engine generator and power consumption equipment power supply buses, be provided with the second no-voltage relay F03, second circuit breaker Q 12 and the second current transformer group T14-T16;
The main switch of described first circuit breaker Q 11 and second circuit breaker Q 12 adopts mechanical interlocked and electrical interlocks;
The described first current transformer group is connected with the first integrative instrument P11, and the described first integrative instrument P11 is connected with the secondary side inlet wire of transformer through the first fuse group F17;
The described second current transformer group is connected with the second integrative instrument P12, and the described second integrative instrument P12 is connected with the inlet wire of diesel engine generator through the second fuse group F110;
The described first integrative instrument P11 is connected with uninterrupted power supply with the second integrative instrument P12;
Described control circuit is connected with the control bus of first circuit breaker, and described control circuit comprises live wire and the ground wire of controlling bus; Described live wire, is connected with ground wire again with the coil of the first auxiliary relay K21 and being connected in parallel of the first red eye H21 with after the first no-voltage relay F02 is connected at last; Described live wire, is connected with ground wire again with the coil of the second auxiliary relay K22 and being connected in parallel of the second red eye H22 with after the second no-voltage relay F03 is connected at last; Described live wire, is connected with ground wire again with the coil of the 3rd auxiliary relay K23 and being connected in parallel of the first greensignal light H23 with after the K switch r of the normal run signal of diesel engine generator of diesel engine generator control cabinet is connected at last; Described live wire is connected with the first amber lamp H24 with after the K switch f of the diesel engine generator fault-signal of diesel engine generator control cabinet is connected again, is connected with ground wire at last; After being connected in series of the normal open switch of the normally closed switch of the described live wire and the second auxiliary relay K22, the 8th auxiliary relay K43 and the first blue signal lamp H25, be connected with ground wire again;
After being connected in series of the normally closed switch of the live wire of described uninterrupted power supply and first circuit breaker Q 11 and energy storage motor, be connected with the zero line of uninterrupted power supply again; After the closing coil Y1 of the normally closed switch of the live wire of described uninterrupted power supply and the first switch knob S31, second circuit breaker Q 12, the normal open switch of the 4th auxiliary relay K31, first circuit breaker is connected in series, be connected with the zero line of uninterrupted power supply again; After being connected in series of the shunt opening trip coil F2 of the live wire of described uninterrupted power supply and the first opening button S32 and first circuit breaker, be connected with the zero line of uninterrupted power supply again; After being connected in series of the shunt opening trip coil F2 of the normal open switch of the live wire of described uninterrupted power supply and the first change over switch S35, the first auxiliary relay K21, the normal open switch of the 3rd auxiliary relay K23, first circuit breaker, be connected with the zero line of uninterrupted power supply again; The live wire of described uninterrupted power supply is with after the first change over switch S35 connects; Again with being connected in parallel of the normal open switch of the first ACK button S33 and the 5th auxiliary relay K32 after; Again with after the first cancel button S34 connects; With the coil of the 5th auxiliary relay K32 and being connected in parallel of the first white signal lamp H34, be connected with the zero line of uninterrupted power supply at last again; The live wire of described uninterrupted power supply is with after the second amber lamp H33 connects, and is connected with the normal open switch of the 3rd coupled switch of first circuit breaker Q 11 again, is connected with the zero line of uninterrupted power supply at last; The live wire of described uninterrupted power supply is with after the coil of the 4th auxiliary relay K31 is connected, and is connected with the normal open switch of the 3rd coupled switch of first circuit breaker Q 11 again, is connected with the zero line of uninterrupted power supply at last; The live wire of described uninterrupted power supply is connected with the zero line of uninterrupted power supply with after normal open switch, the 3rd green lamp H31 of first coupled switch of first circuit breaker Q 11 connect successively again; The live wire of described uninterrupted power supply is connected with the zero line of uninterrupted power supply with after normally closed switch, the quatre chrominance signal lamp H32 of first coupled switch of first circuit breaker Q 11 connect successively again;
The normally closed switch of the live wire of described uninterrupted power supply and second circuit breaker Q 12 is connected with the zero line of uninterrupted power supply with after energy storage motor is connected again; After the closing coil Y11 of the normal open switch of the normal open switch of the live wire of described uninterrupted power supply and the first change over switch S35, the first auxiliary relay K21, the normal open switch of the 3rd auxiliary relay K23, the 6th auxiliary relay K41, the normally closed switch of first circuit breaker Q 11, second circuit breaker connects, be connected with the zero line of uninterrupted power supply again; After the closing coil Y11 of the normal open switch of the live wire of described uninterrupted power supply and the second switch knob S41, the 6th auxiliary relay K41, the normally closed switch of first circuit breaker Q 11, second circuit breaker connects, be connected with the zero line of uninterrupted power supply again; After being connected in series of the shunt opening trip coil F22 of the live wire of described uninterrupted power supply and the second opening button S42 and second circuit breaker, be connected with the zero line of uninterrupted power supply again; The live wire of described uninterrupted power supply, is connected with the zero line of uninterrupted power supply again with the coil of the 8th auxiliary relay K43 and being connected in parallel of the second greensignal light H41 with after the normal open switch of first coupled switch of second circuit breaker Q 12 is connected at last; After being connected in series of the normally closed switch of first coupled switch of the live wire of described uninterrupted power supply and second circuit breaker Q 12 and the 3rd red eye H42, be connected with the zero line of uninterrupted power supply again; After being connected in series of the normal open switch of the 3rd coupled switch of the live wire of described uninterrupted power supply and the 3rd amber lamp H43 and second circuit breaker Q 12, be connected with the zero line of uninterrupted power supply again; After being connected in series of the normally closed switch of the 3rd coupled switch of the coil of the live wire of described uninterrupted power supply and the 6th auxiliary relay K41, second circuit breaker Q 12, be connected with the zero line of uninterrupted power supply again; The live wire of described uninterrupted power supply is with after the first change over switch S35 connects; Again with being connected in parallel of the normal open switch of the second ACK button S43 and the 7th auxiliary relay K42 after; Again with after the second cancel button S44 connects; Coil with the 7th auxiliary relay K42 is connected again, is connected with the zero line of uninterrupted power supply at last.
In the present embodiment, described control power supply is that uninterrupted power supply is a ups power.
Fig. 1 is main loop circuit figure of the present invention; First circuit breaker Q 11 (main service entrance switch) and the detecting element, the Displaying Meter that comprise the Circuit Fault on Secondary Transformer inlet wire; Second circuit breaker Q 12 (main service entrance switch) of diesel generation pusher side inlet wire and detecting element, Displaying Meter; The electric power incoming line of control circuit is from UPS, to guarantee the reliability of control power supply.First circuit breaker Q 11 and second circuit breaker Q 12 are the frame-type electric console switch.When voltage just often; The normally closed contact of the first no-voltage relay F02, the second no-voltage relay F03 gets electric disconnection, and when dead electricity or voltage were lower than rated voltage 75%, the contact dead electricity was closed; The contact of the first no-voltage relay F02, the second no-voltage relay F03 is for opening and closing time-delay contact, and the time is adjustable.The first integrative instrument P11 and the second integrative instrument P12 display voltage, electric current, active power, reactive power etc.First circuit breaker Q 11 and second circuit breaker Q, 12 main switches had not only been joined mechanical interlocked but also charged gas interlocking, guaranteed to have only one road inlet wire to supply power to system, avoid the mistake of closing a floodgate simultaneously, but structure and electric going up allowed separating brake simultaneously.
Fig. 2 is a control loop circuit diagram of the present invention, and number < 1>< 2 >, loop are Circuit Fault on Secondary Transformer electric power incoming line no-voltage relay loop and decompression indication loop; Number < 3>< 4 >, loop are diesel engine generator electric power incoming line no-voltage relay loop and decompression indication loop; Loop < 5>< 6>is diesel engine generator stable operation signal relay loop and indication loop; Loop number < 7>is diesel engine generator resultant fault signal indication loop; Loop number < 8>is emergency power supply operation indication loop, and after diesel engine generator was given user's normal power supply, then this lamp was bright; Loop number < 9>starts the diesel engine generator contact point signal during for manual mode; Loop number < 10>starts the diesel engine generator contact point signal during for automatic mode, confirms that by automatic mode is artificial contact, normal power source decompression contact are in series.With delivering to the control system cabinet that diesel engine generator carries after < 10>the two winding point parallel connections of loop number < 9 >, as the startup signal of telecommunication of diesel engine generator.
Fig. 3 is the circuit diagram of first circuit breaker among the present invention, and loop number < 1>is the energy storage motor loop of first circuit breaker Q 11, and energy storage motor provides the kinetic energy of frame switch main contact combined floodgate separating brake; Loop number < 2>is the closing coil loop of first circuit breaker Q 11, and when second circuit breaker Q, 12 separating brakes, during first circuit breaker Q, 11 fault-free, first circuit breaker Q 11 could be closed a floodgate, and the person can not close a floodgate, and has guaranteed the fail safe of closing a floodgate.Loop number < 3>is first circuit breaker Q, 11 switching winding loops; Loop number < 4>is the automatic brake separating loop; The first change over switch S35 of auto-manual model selection; With normal power source inlet wire decompression contact (normal open switch of the first auxiliary relay K21); After generator normally moves contact (normal open switch of the 3rd auxiliary relay K23) series connection, control normal power source main switch first circuit breaker Q 11 separating brakes; Loop number < 5>is first circuit breaker Q, 11 combined floodgate indication loops, and behind the combined floodgate, the battle of first coupled switch of first circuit breaker is closed, and the 3rd green lamp H31 is bright; Loop number < 6>is first circuit breaker Q, 11 separating brakes indication loop, and during separating brake, then quatre chrominance signal lamp H32 is bright; Loop number < 7>is that first circuit breaker Q, 11 gate-dividing states are opened contact; Loop number < 8>is that first circuit breaker Q, 11 gate-dividing states close contact, causes second circuit breaker Q, 12 main switches, forms electrical interlock; Loop number < 9>is second circuit breaker Q, 12 faulty indication, and when fault was arranged, the 3rd coupled switch of first circuit breaker was closed, and the second amber lamp H33 is bright; Loop number < 10>is first circuit breaker Q, 11 fault loop, and during fault-free, the 4th auxiliary relay K31 gets electric, when fault is arranged, and the 4th auxiliary relay K31 dead electricity; Indication is confirmed for automatic mode in loop number < 11 >; Loop number < 12>is confirmed for automatic mode or the cancellation loop; After the first change over switch S35 gets to automatic transmission; Need remove artificially to start automated manner through this loop, after automated manner starts, like the normal power source decompression; First circuit breaker Q, 11 main switch separating brakes then, diesel engine generator and second circuit breaker Q, 12 main switches put into operation automatically.Loop number < 13>is the first change over switch S35 junction closure table, when switch is got to 00 station, is manual mode; 1-2,3-4 contact are connected, and only use the 1-2 contact in the native system, and the 3-4 contact is not used; When switch is got to 900 stations, be automatic mode, 5-6,7-8 contact are connected.
Fig. 4 is the circuit diagram of second circuit breaker among the present invention, and loop number < 1>is second circuit breaker Q, 12 switch energy storage motor loops, and energy storage motor provides the kinetic energy of frame switch main contact combined floodgate separating brake; Loop number < 2>is second circuit breaker Q, 12 automatic closing loops; First change over switch S35 of auto-manual model selection and normal power source inlet wire decompression contact (switch of the first auxiliary relay K21); After diesel engine generator normally moved contact (switch of the 3rd auxiliary relay K23) series connection, control emergency power supply main switch second circuit breaker Q 12 was closed a floodgate; Loop number < 3>is second circuit breaker Q, 12 closing coil loops, second circuit breaker Q, 12 switches self fault-free, and first circuit breaker Q, 11 switches are when being in gate-dividing state, and second circuit breaker Q 12 could be closed a floodgate, and the person can not close a floodgate, and has guaranteed the fail safe of closing a floodgate; Loop number < 4>is second circuit breaker Q, 12 sub-gate circuits; The 8th auxiliary relay K43 is second circuit breaker Q, 12 switching signal relays in the loop number < 5 >, and after closing a floodgate, first linked switch of second circuit breaker is closed, and the 8th auxiliary relay K43 gets; Loop number < 6>is first circuit breaker Q, 11 combined floodgate indication loops, and during combined floodgate, first coupled switch of second circuit breaker is closed, and the second greensignal light H41 is bright; Second circuit breaker Q 12 is broken off when being separating brake in the loop number < 7 >, and the 3rd red eye H42 is bright; Loop number < 8>is that second circuit breaker Q, 12 gate-dividing states are opened contact; Loop number < 9>is that second circuit breaker Q, 12 gate-dividing states close contact, and this contact causes normal power source circuit breaker (first circuit breaker Q 11) control loop, forms electrical interlock; Loop number < 10>is second circuit breaker Q, 12 faulty indication loops, and when second circuit breaker Q, 12 faults, the 3rd coupled switch of second circuit breaker is closed, and the 3rd amber lamp H43 is bright; Loop number < 11>is the fault contact loop of second circuit breaker Q 12, and during fault-free, the 6th auxiliary relay K41 gets electric, when fault is arranged, and the 6th auxiliary relay K41 dead electricity; Loop number < 12>starts stop loop for the diesel engine generator remote manual, and the first change over switch S35 is manual automatic mode change over switch, and the second ACK button S43 is a start button, and the second cancel button S44 is a stop button.When the first change over switch S35 get to manual after, can remote activation or stop diesel engine generator through this loop, simultaneously also can manual operation the disjunction or the closure of first circuit breaker Q 11, second circuit breaker Q, 12 main switches.
According to Fig. 1-Fig. 4 of the present invention; The inlet wire that can be made into a dark x height=800x1000x2200mm of wide x switches cabinet; Integrative instrument, change over switch, button, signal lamps all among the figure all are installed on the cabinet door, and frame switch, no-voltage relay, instrument transformer, circuit breaker, fuse, auxiliary relay etc. are installed in the cabinet.System only establishes a change over switch; Change over switch is got to when manual; The moving remote activation of armrest stops diesel engine generator fully; And break off or the normal power source main switch that closes; Or the emergency power supply main switch, the manual mode concrete operations are in proper order: change over switch places manual (00 station) → disjunction normal power source main switch (main switch of first circuit breaker Q 11) → disjunction emergency power supply main switch (main switch of first circuit breaker Q 12) → startup diesel engine generator → generator operation/permission emergency button combined floodgate green light to light → close emergency power supply main switch (main switch of first circuit breaker Q 12) → diesel engine and drops into powered operation; Stop diesel engine and switch to the normal power source power supply order: stop diesel engine generator → disjunction emergency power supply main switch (main switch of first circuit breaker Q 12) → normal power source main switch that closes (main switch of first circuit breaker Q 11) → normal power source and drop into powered operation.The automatic mode concrete operations are in proper order: change over switch places automatic transmission (900 station) → press automated manner ACK button-S33 → automated manner indicator light bright; Put into operation to this automated manner; When system detects normal power source dead electricity or brownout; Meeting automatic disjunction inlet wire main switch (main switch of first circuit breaker Q 11) starts diesel engine generator, after diesel engine generator is stable; Emergent main switch (main switch of first circuit breaker Q 12) automatic closing is supplied power to the user by diesel engine; Behind the normal power source incoming call; Cut off diesel engine if desired, concrete operations orders: press automated manner cancel button-S34 or change over switch got to manual → disjunction emergency power supply main switch (main switch of first circuit breaker Q 12) → normal power source main switch that closes (main switch of first circuit breaker Q 11).The operating result in per step can have all that corresponding indicator light is lighted, the demonstration of electric current and voltage, if system breaks down, also has corresponding malfunction indicator lamp and lights, and so just knows the fault point, for handling failure has been practiced thrift the time.
The present invention provides the commutation circuit of normal power supply transformer and high-power emergency diesel dynamo power supply, when transformer primary side high pressure (like 10kV) power down, can perhaps manually drop into diesel engine generator (AC380V) automatically, and the guarantee using electricity system is in time supplied power.In order to guarantee the fail safe of whole system, after diesel engine generator puts into operation, when the transformer high-voltage side restores electricity, need the people for cutting off the diesel engine generator power supply, and manually drop into the transformer-supplied power supply.
The above; Only being preferred embodiment of the present invention, is not that the present invention is done any pro forma restriction, and those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification; Equivalent variations or modification all drop in protection scope of the present invention.

Claims (3)

1. the commutation circuit of transformer and high-power diesel generator power supply comprises transformer, diesel engine generator, control circuit and power consumption equipment power supply buses, it is characterized in that:
The secondary side inlet wire of described transformer and the inlet wire of diesel engine generator are connected with the power consumption equipment power supply buses respectively;
Between transformer and power consumption equipment power supply buses, be provided with first no-voltage relay, first circuit breaker and the first current transformer group;
Between diesel engine generator and power consumption equipment power supply buses, be provided with second no-voltage relay, second circuit breaker and the second current transformer group;
The main switch of described first circuit breaker and second circuit breaker adopts mechanical interlocked and electrical interlocks;
The described first current transformer group is connected with first integrative instrument, and described first integrative instrument is connected with the secondary side inlet wire of transformer through the first fuse group;
The described second current transformer group is connected with second integrative instrument, and described second integrative instrument is connected with the inlet wire of diesel engine generator through the second fuse group;
Described first integrative instrument is connected with uninterrupted power supply with second integrative instrument;
Described control circuit is connected with the control bus of first circuit breaker, and described control circuit comprises live wire and the ground wire of controlling bus; Described live wire, is connected with ground wire again with the coil of first auxiliary relay and being connected in parallel of first red eye with after first no-voltage relay is connected at last; Described live wire, is connected with ground wire again with the coil of second auxiliary relay and being connected in parallel of second red eye with after second no-voltage relay is connected at last; Described live wire, is connected with ground wire again with the coil of the 3rd auxiliary relay and being connected in parallel of first greensignal light with after the switch of the normal run signal of diesel engine generator of diesel engine generator control cabinet is connected at last;
After being connected in series of the normally closed switch of the live wire of described uninterrupted power supply and first circuit breaker and energy storage motor, be connected with the zero line of uninterrupted power supply again; After the closing coil of the normally closed switch of the live wire of described uninterrupted power supply and first switch knob, second circuit breaker, the normal open switch of the 4th auxiliary relay, first circuit breaker is connected in series, be connected with the zero line of uninterrupted power supply again; After being connected in series of the shunt opening trip coil of the live wire of described uninterrupted power supply and first opening button and first circuit breaker, be connected with the zero line of uninterrupted power supply again; After being connected in series of the shunt opening trip coil of the normal open switch of the live wire of described uninterrupted power supply and first change over switch, first auxiliary relay, the normal open switch of the 3rd auxiliary relay, first circuit breaker, be connected with the zero line of uninterrupted power supply again; The live wire of described uninterrupted power supply is with after first change over switch is connected; Again with being connected in parallel of the normal open switch of first ACK button and the 5th auxiliary relay after; Again with after first cancel button is connected; With the coil of the 5th auxiliary relay and being connected in parallel of the first white signal lamp, be connected with the zero line of uninterrupted power supply at last again; The live wire of described uninterrupted power supply is with after second amber lamp is connected, and is connected with the normal open switch of the 3rd coupled switch of first circuit breaker again, is connected with the zero line of uninterrupted power supply at last; The live wire of described uninterrupted power supply is with after the coil of the 4th auxiliary relay is connected, and is connected with the normal open switch of the 3rd coupled switch of first circuit breaker again, is connected with the zero line of uninterrupted power supply at last;
The live wire of described uninterrupted power supply is connected with the zero line of uninterrupted power supply with after the normally closed switch of second circuit breaker is connected again; After the closing coil of the normal open switch of the normal open switch of the live wire of described uninterrupted power supply and first change over switch, first auxiliary relay, the normal open switch of the 3rd auxiliary relay, the 6th auxiliary relay, the normally closed switch of first circuit breaker, second circuit breaker is connected, be connected with the zero line of uninterrupted power supply again; After the closing coil of the normal open switch of the live wire of described uninterrupted power supply and second switch knob, the 6th auxiliary relay, the normally closed switch of first circuit breaker, second circuit breaker is connected, be connected with the zero line of uninterrupted power supply again; After being connected in series of the shunt opening trip coil of the live wire of described uninterrupted power supply and second opening button and second circuit breaker, be connected with the zero line of uninterrupted power supply again; The live wire of described uninterrupted power supply, is connected with the zero line of uninterrupted power supply again with the coil of the 8th auxiliary relay and being connected in parallel of second greensignal light with after the normal open switch of first coupled switch of second circuit breaker is connected at last; After being connected in series of the normally closed switch of first coupled switch of the live wire of described uninterrupted power supply and second circuit breaker and the 3rd red eye, be connected with the zero line of uninterrupted power supply again; After being connected in series of the normal open switch of the 3rd coupled switch of the live wire of described uninterrupted power supply and the 3rd amber lamp and second circuit breaker, be connected with the zero line of uninterrupted power supply again; After being connected in series of the normally closed switch of the 3rd coupled switch of the coil of the live wire of described uninterrupted power supply and the 6th auxiliary relay, second circuit breaker, be connected with the zero line of uninterrupted power supply again; The live wire of described uninterrupted power supply is with after first change over switch is connected; Again with being connected in parallel of the normal open switch of second ACK button and the 7th auxiliary relay after; With after second cancel button is connected, the coil with the 7th auxiliary relay is connected again, is connected with the zero line of uninterrupted power supply at last again.
2. the commutation circuit of transformer as claimed in claim 1 and high-power diesel generator power supply; It is characterized in that: control circuit also includes two branch roads; First branch road for the live wire of control bus with after the switch of the diesel engine generator fault-signal of diesel engine generator control cabinet is connected; Be connected with first amber lamp again, be connected with control bus ground wire at last; Second branch road is for after being connected in series of the normal open switch of the normally closed switch of control bus live wire and second auxiliary relay, the 8th auxiliary relay and the first blue signal lamp, again with control the bus ground wire and be connected.
3. the commutation circuit of transformer as claimed in claim 1 and high-power diesel generator power supply; It is characterized in that: the live wire of described uninterrupted power supply is connected with the zero line of uninterrupted power supply with after normal open switch, the 3rd green lamp of first coupled switch of first circuit breaker are connected successively again; The live wire of described uninterrupted power supply is connected with the zero line of uninterrupted power supply with after normally closed switch, the quatre chrominance signal lamp of first coupled switch of first circuit breaker are connected successively again.
CN201210256022.5A 2012-07-24 2012-07-24 Switching circuit for power supplies of high-power diesel engine generator and transformer Active CN102751783B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107565943A (en) * 2017-08-27 2018-01-09 邱诗妍 Motor start stop switch circuit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2874898Y (en) * 2006-02-23 2007-02-28 蔡军 Double power source switch device
CN201025680Y (en) * 2007-03-20 2008-02-20 西安陕鼓动力股份有限公司 A dual power switching circuit
CN202260611U (en) * 2011-09-30 2012-05-30 安徽金力电气技术有限公司 Intelligent type dual-power automatic change-over switch
CN202798136U (en) * 2012-07-24 2013-03-13 中冶南方工程技术有限公司 Switching circuit of power supplies of transformer and large-power diesel generator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2874898Y (en) * 2006-02-23 2007-02-28 蔡军 Double power source switch device
CN201025680Y (en) * 2007-03-20 2008-02-20 西安陕鼓动力股份有限公司 A dual power switching circuit
CN202260611U (en) * 2011-09-30 2012-05-30 安徽金力电气技术有限公司 Intelligent type dual-power automatic change-over switch
CN202798136U (en) * 2012-07-24 2013-03-13 中冶南方工程技术有限公司 Switching circuit of power supplies of transformer and large-power diesel generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107565943A (en) * 2017-08-27 2018-01-09 邱诗妍 Motor start stop switch circuit
CN107565943B (en) * 2017-08-27 2020-06-05 方大电机股份有限公司 Motor start-stop switch circuit

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Effective date of registration: 20151119

Address after: 100000 Xicheng District West Chang'an Avenue, No. 86, Beijing

Patentee after: State Grid Corporation of China

Patentee after: Pingdingshan Power Supply Company, State Grid Henan Electric Power Co., Ltd.

Address before: 430223 Hubei city of Wuhan province East Lake New Technology Development Zone, University Road No. 33

Patentee before: WISDRI Engineering & Research Incorporation Limited