CN202798136U - Switching circuit of power supplies of transformer and large-power diesel generator - Google Patents
Switching circuit of power supplies of transformer and large-power diesel generator Download PDFInfo
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- CN202798136U CN202798136U CN 201220358455 CN201220358455U CN202798136U CN 202798136 U CN202798136 U CN 202798136U CN 201220358455 CN201220358455 CN 201220358455 CN 201220358455 U CN201220358455 U CN 201220358455U CN 202798136 U CN202798136 U CN 202798136U
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Abstract
The utility model relates to a switching circuit of power supplies of a transformer and a large-power diesel generator. The switching circuit comprises the transformer, the diesel generator, a control circuit and an electricity-consuming equipment power-supplying bus. A secondary-side inlet wire of the transformer and an inlet wire of the diesel generator are respectively connected with the electricity-consuming equipment power-supplying bus; a first no-voltage relay, a first circuit breaker and a first current transformer group are arranged between the transformer and the electricity-consuming equipment power-supplying bus; a second no-voltage relay, a second circuit breaker and a second current transformer group are arranged between the diesel generator and the electricity-consuming equipment power-supplying bus; main switches of the first circuit breaker and the second circuit breaker are interlocked mechanically and electrically; the first current transformer group is connected with a first comprehensive meter; the second current transformer group is connected with a second comprehensive meter; and the first comprehensive meter and the second comprehensive meter are connected with an uninterrupted power supply. The switching circuit can ensure timely power supplying for an electricity-consuming system.
Description
Technical field
The utility model relates to a kind of commutation circuit, relates in particular to the commutation circuit of a kind of transformer and high-power diesel generator power supply.
Background technology
Because the many relations with electric unit or equipment operation importance of industry and 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, usually adopt and provide the diesel engine generator generating for oneself, starting diesel engine generator generally has two kinds of methods, and the simplest is to manually boot, and the second is automatically to start diesel engine to 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 to customer power supply.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, although adopt the simple of microchip control, flexibility is relatively poor.
The utility model content
Technical problem to be solved in the utility model 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 (such as 10kV) power down, can be automatically or manually drop into diesel engine generator (AC380V), ensure that using electricity system in time powers.
The technical scheme that the utility model adopts 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 is connected inlet wire and is connected with the power consumption equipment power supply buses respectively with diesel engine generator;
Between transformer and power consumption equipment power supply buses, be provided with the first no-voltage relay, the first circuit breaker and the first current transformer group;
Between diesel engine generator and power consumption equipment power supply buses, be provided with the second no-voltage relay, the second circuit breaker and the second current transformer group;
The main switch of described the first circuit breaker and the second circuit breaker adopts mechanical interlocked and electrical interlocks;
Described the first current transformer group is connected with the first integrative instrument, and described the first integrative instrument is connected with the secondary side inlet wire of transformer by the first fuse group;
Described the second current transformer group is connected with the second integrative instrument, and described the second integrative instrument is connected with the inlet wire of diesel engine generator by the second fuse group;
Described the first integrative instrument be connected integrative instrument and be connected with uninterrupted power supply;
Described control circuit is connected with the control bus of the first circuit breaker, and described control circuit comprises live wire and the ground wire of control bus; Described live wire, is connected with ground wire again with the coil of the first auxiliary relay and being connected in parallel of the first red eye with after the first no-voltage relay is connected at last; Described live wire, is connected with ground wire again with the coil of the second auxiliary relay and being connected in parallel of the second red eye with after the 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 the 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 the 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 the first switch knob, the second circuit breaker, the normal open switch of the 4th auxiliary relay, the 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 the first opening button and the 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 the first change over switch, the first auxiliary relay, the normal open switch of the 3rd auxiliary relay, the 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 is connected, again with being connected in parallel of the normal open switch of the first ACK button and the 5th auxiliary relay after, again with after the 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 the second amber lamp is connected, and is connected with the normal open switch of the 3rd coupled switch of the 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 the 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 the 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 the first change over switch, the first auxiliary relay, the normal open switch of the 3rd auxiliary relay, the 6th auxiliary relay, the normally closed switch of the first circuit breaker, the 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 the second switch knob, the 6th auxiliary relay, the normally closed switch of the first circuit breaker, the 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 the second opening button and the 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 the second greensignal light with after the normal open switch of the first coupled switch of the second circuit breaker is connected at last; After being connected in series of the normally closed switch of the first coupled switch of the live wire of described uninterrupted power supply and the 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 the 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, the 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 the first change over switch is connected, again with being connected in parallel of the normal open switch of the second ACK button and the 7th auxiliary relay after, with after the 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, the first branch road be 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 the first amber lamp again, be connected with the control bus ground wire at last; The second branch road is connected with the control bus ground wire after being being connected in series of the normal open switch of normally closed switch, the 8th auxiliary relay of control bus live wire and the second auxiliary relay and the first blue signal lamp again.
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 the first coupled switch of the 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 the first coupled switch of the first circuit breaker are connected successively again.
Circuit diagram of the present utility model adopts traditional relay control system from practicality and solid angle, combines automatic power switching and manual power and switches two kinds of control models, makes things convenient for user selection and management.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 that low-voltage was to the damage of some power consumption equipment.This circuit diagram provides the reliable scheme that can solve relevant issues of a practicality.
The beneficial effects of the utility model are: 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 traditional relay control system, combine automatic power switching and manual power and switch two kinds of control models, make things convenient for user selection and management.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 that low-voltage was to the damage of some power consumption equipment.
Description of drawings
Fig. 1 is main loop circuit figure of the present utility model.
Fig. 2 is control loop circuit diagram of the present utility model.
Fig. 3 is the circuit diagram of the first circuit breaker in the utility model.
Fig. 4 is the circuit diagram of the second circuit breaker in the utility model.
Among the figure: F02, the first no-voltage relay, F03, the second no-voltage relay, P11, the first integrative instrument, P12, the second integrative instrument, Q11, the first circuit breaker, Q12, the 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, the first auxiliary relay, H21, the first red eye, K22, the second auxiliary relay, H22, the 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, the first greensignal light, S31, the first switch knob, K31, the 4th auxiliary relay, Y1, the closing coil of the first circuit breaker, S32, the first opening button, F2, the shunt opening trip coil of the first circuit breaker, S35, the first change over switch, S33, the first ACK button, K32, the 5th auxiliary relay, S34, the first cancel button, H34, the first white signal lamp, H33, the second amber lamp, H31, the 3rd green lamp, H32, quatre chrominance signal lamp, Kf, the switch of the diesel engine generator fault-signal of diesel engine generator control cabinet, H24, the first amber lamp, K43, the 8th auxiliary relay, H25, the first blue signal lamp, K41, the 6th auxiliary relay, Y11, the closing coil of the second circuit breaker, S41, the second switch knob, S42, the second opening button, F22, the shunt opening trip coil of the second circuit breaker, H41, the second greensignal light, H42, the 3rd red eye, H43, the 3rd amber lamp, S43, the second ACK button, K42, the 7th auxiliary relay, S44, the second cancel button, Q31, the first control loop lead-in circuit breaker, Q12-S2, the sub-gate signal contact of the second circuit breaker Q 12, Q41, the second control loop lead-in circuit breaker, Q11-S2, the sub-gate signal contact of the first circuit breaker Q 11.
Embodiment
Further specify embodiment of the present utility model 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 is connected inlet wire and is connected with the power consumption equipment power supply buses respectively with diesel engine generator;
Between transformer and power consumption equipment power supply buses, be provided with the first no-voltage relay F02, the 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, the second circuit breaker Q 12 and the second current transformer group T14-T16;
The main switch of described the first circuit breaker Q 11 and the second circuit breaker Q 12 adopts mechanical interlocked and electrical interlocks;
Described the first current transformer group is connected with the first integrative instrument P11, and described the first integrative instrument P11 is connected with the secondary side inlet wire of transformer by the first fuse group F17;
Described the second current transformer group is connected with the second integrative instrument P12, and described the second integrative instrument P12 is connected with the inlet wire of diesel engine generator by the second fuse group F110;
Described the first integrative instrument P11 be connected integrative instrument P12 and be connected with uninterrupted power supply;
Described control circuit is connected with the control bus of the first circuit breaker, and described control circuit comprises live wire and the ground wire of control 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, and is connected with ground wire at last; After being connected in series of the normal open switch of the normally closed switch of 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 the 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, the second circuit breaker Q 12, the normal open switch of the 4th auxiliary relay K31, the 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 the 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, the 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 the 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 the 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 the first coupled switch of the 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 the first coupled switch of the first circuit breaker Q 11 connect successively again;
The normally closed switch of the live wire of described uninterrupted power supply and the 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 the first circuit breaker Q 11, the 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 the first circuit breaker Q 11, the 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 the 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 the first coupled switch of the second circuit breaker Q 12 is connected at last; After being connected in series of the normally closed switch of the first coupled switch of the live wire of described uninterrupted power supply and the 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 the 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, the 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 ups power.
Fig. 1 is main loop circuit figure of the present utility model, comprise first circuit breaker Q 11 (main service entrance switch) of Circuit Fault on Secondary Transformer inlet wire and detecting element, Displaying Meter, 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.The first circuit breaker Q 11 and the second circuit breaker Q 12 are the frame-type electric console switch.When voltage is normal, 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 show voltage, electric current, active power, reactive power etc.The first circuit breaker Q 11 and the second circuit breaker Q 12 main switches are not only joined mechanical interlocked but also be with electric interlocking, guarantee to only have one road inlet wire can be to system power supply, avoid the mistake of closing a floodgate simultaneously, but structure and electric upper permissions while separating brake.
Fig. 2 is control loop circuit diagram of the present utility model, loop number＜1〉＜2 be Circuit Fault on Secondary Transformer electric power incoming line no-voltage relay loop and decompression indication loop; Loop number＜3〉＜4 be diesel engine generator electric power incoming line no-voltage relay loop and decompression indication loop; Loop＜5〉＜6 be diesel engine generator stable operation signal relay loop and indication loop; Loop number＜7〉be diesel engine generator resultant fault signal designation loop; Loop number＜8〉be emergency power supply operation indication loop, after diesel engine generator was to user's normal power supply, then this lamp was bright; Loop number＜9〉start the diesel engine generator contact point signal during for manual mode; Loop number＜10〉start the diesel engine generator contact point signal during for automatic mode, be in series by automatic mode manual confirmation contact, normal power source decompression contact.With loop number＜9〉＜deliver to the control system cabinet that diesel engine generator carries after 10〉the two winding point parallel connections, as the startup signal of telecommunication of diesel engine generator.
Fig. 3 is the circuit diagram of the first circuit breaker in the utility model, loop number＜1〉be the energy storage motor loop of the first circuit breaker Q 11, energy storage motor provides the kinetic energy of frame switch main contact combined floodgate separating brake; Loop number＜2〉be the closing coil loop of the first circuit breaker Q 11, when the second circuit breaker Q 12 separating brakes, during the first circuit breaker Q 11 fault-free, the first circuit breaker Q 11 could be closed a floodgate, and no person can not close a floodgate, and has guaranteed the fail safe of closing a floodgate.Loop number＜3〉be the first circuit breaker Q 11 switching winding loops; Loop number＜4〉be 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 the first circuit breaker Q 11 separating brakes; Loop number＜5〉be the first circuit breaker Q 11 indication loops of closing a floodgate, behind the combined floodgate, the battle of the first coupled switch of the first circuit breaker is closed, and the 3rd green lamp H31 is bright; Loop number＜6〉be the first circuit breaker Q 11 separating brakes indication loop, during separating brake, then quatre chrominance signal lamp H32 is bright; Loop number＜7〉be that the first circuit breaker Q 11 gate-dividing states are opened contact; Loop number＜8〉be that the first circuit breaker Q 11 gate-dividing states close contact, cause the second circuit breaker Q 12 main switches, form electrical interlock; Loop number＜9〉be the second circuit breaker Q 12 faulty indication, when fault was arranged, the 3rd coupled switch of the first circuit breaker was closed, and the second amber lamp H33 is bright; Loop number＜10〉be the first circuit breaker Q 11 fault loop, during fault-free, the 4th auxiliary relay K31 gets electric, when fault is arranged, the 4th auxiliary relay K31 dead electricity; Loop number＜11〉be that automatic mode is confirmed indication; Loop number＜12〉be that automatic mode is confirmed or the cancellation loop, after the first change over switch S35 gets to automatic transmission, need to remove artificially to start automated manner by this loop, after automated manner starts, such as the normal power source decompression, the first circuit breaker Q 11 main switch separating brakes then, diesel engine generator and the second circuit breaker Q 12 main switches put into operation automatically.Loop number＜13〉be the first change over switch S35 junction closure table, when switch is got to 00 station, be 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 station, be automatic mode, 5-6,7-8 contact are connected.
Fig. 4 is the circuit diagram of the second circuit breaker in the utility model, loop number＜1〉be the second circuit breaker Q 12 energy storing of switch electric motor loops, energy storage motor provides the kinetic energy of frame switch main contact combined floodgate separating brake; Loop number＜2〉be the second circuit breaker Q 12 automatic closing loops, the 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 the second circuit breaker Q 12 was closed a floodgate; Loop number＜3〉be the second circuit breaker Q 12 closing coil loops, the second circuit breaker Q 12 switches self fault-free, and the first circuit breaker Q 11 switches are when being in gate-dividing state, and the second circuit breaker Q 12 could be closed a floodgate, and no person can not close a floodgate, and has guaranteed the fail safe of closing a floodgate; Loop number＜4〉be the second circuit breaker Q 12 sub-gate circuits; Loop number＜5〉in the 8th auxiliary relay K43 be the second circuit breaker Q 12 switching signal relays, after closing a floodgate, the first linked switch of the second circuit breaker is closed, the 8th auxiliary relay K43 gets electric; Loop number＜6〉be the first circuit breaker Q 11 indication loops of closing a floodgate, during combined floodgate, the first coupled switch of the second circuit breaker is closed, and the second greensignal light H41 is bright; Loop number＜7〉in the second circuit breaker Q 12 disconnect when being separating brake, the 3rd red eye H42 is bright; Loop number＜8〉be that the second circuit breaker Q 12 gate-dividing states are opened contact; Loop number＜9〉be that the second circuit breaker Q 12 gate-dividing states close contact, this contact causes normal power source circuit breaker (the first circuit breaker Q 11) control loop, forms electrical interlock; Loop number＜10〉be the second circuit breaker Q 12 faulty indication loops, when the second circuit breaker Q 12 fault, the 3rd coupled switch of the second circuit breaker is closed, and the 3rd amber lamp H43 is bright; Loop number＜11〉be the fault contact loop of the second circuit breaker Q 12, during fault-free, the 6th auxiliary relay K41 gets electric, when fault is arranged, the 6th auxiliary relay K41 dead electricity; Loop number＜12〉be that the diesel engine generator remote manual starts stop loop, the first change over switch S35 is manual automatic mode change over switch, and the second ACK button S43 is start button, and the second cancel button S44 is stop button.When the first change over switch S35 get to manual after, can remote activation or stop diesel engine generator by this loop, simultaneously also can manual operation the first circuit breaker Q 11, disjunction or the closure of the second circuit breaker Q 12 main switches.
According to Fig. 1-Fig. 4 of the present utility model, 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 disconnect or the normal power source main switch that closes, or the emergency power supply main switch, the manual mode concrete operations sequentially are: change over switch places manual (00 station) → disjunction normal power source main switch (main switch of the first circuit breaker Q 11) → disjunction emergency power supply main switch (main switch of the 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 the 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 the first circuit breaker Q 12) → normal power source main switch that closes (main switch of the first circuit breaker Q 11) → normal power source and drop into powered operation.The automatic mode concrete operations sequentially are: 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 the first circuit breaker Q 11), start diesel engine generator, after diesel engine generator is stable, emergent main switch (main switch of the first circuit breaker Q 12) automatic closing, by diesel engine to customer power supply; Behind the normal power source incoming call, if need to cut off diesel engine, concrete operations order: press automated manner cancel button-S34 or change over switch got to manual → disjunction emergency power supply main switch (main switch of the first circuit breaker Q 12) → normal power source main switch that closes (main switch of the 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 saved the time.
The utility model provides the commutation circuit of normal power supply transformer and high-power emergency diesel dynamo power supply, when transformer primary side high pressure (such as 10kV) power down, can be automatically or manually drop into diesel engine generator (AC380V), ensure that using electricity system in time powers.In order to guarantee the fail safe of whole system, after diesel engine generator puts into operation, when high voltage side of transformer restores electricity, need the people for cutting off the diesel generation electromechanical source, and manually drop into the transformer-supplied power supply.
The above; only being preferred embodiment of the present utility model, is not that the utility model 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 the protection range of the present utility model.
Claims (3)
1. the commutation circuit of a 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 is connected inlet wire and is connected with the power consumption equipment power supply buses respectively with diesel engine generator;
Between transformer and power consumption equipment power supply buses, be provided with the first no-voltage relay, the first circuit breaker and the first current transformer group;
Between diesel engine generator and power consumption equipment power supply buses, be provided with the second no-voltage relay, the second circuit breaker and the second current transformer group;
The main switch of described the first circuit breaker and the second circuit breaker adopts mechanical interlocked and electrical interlocks;
Described the first current transformer group is connected with the first integrative instrument, and described the first integrative instrument is connected with the secondary side inlet wire of transformer by the first fuse group;
Described the second current transformer group is connected with the second integrative instrument, and described the second integrative instrument is connected with the inlet wire of diesel engine generator by the second fuse group;
Described the first integrative instrument be connected integrative instrument and be connected with uninterrupted power supply;
Described control circuit is connected with the control bus of the first circuit breaker, and described control circuit comprises live wire and the ground wire of control bus; Described live wire, is connected with ground wire again with the coil of the first auxiliary relay and being connected in parallel of the first red eye with after the first no-voltage relay is connected at last; Described live wire, is connected with ground wire again with the coil of the second auxiliary relay and being connected in parallel of the second red eye with after the 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 the 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 the 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 the first switch knob, the second circuit breaker, the normal open switch of the 4th auxiliary relay, the 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 the first opening button and the 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 the first change over switch, the first auxiliary relay, the normal open switch of the 3rd auxiliary relay, the 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 is connected, again with being connected in parallel of the normal open switch of the first ACK button and the 5th auxiliary relay after, again with after the 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 the second amber lamp is connected, and is connected with the normal open switch of the 3rd coupled switch of the 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 the 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 the 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 the first change over switch, the first auxiliary relay, the normal open switch of the 3rd auxiliary relay, the 6th auxiliary relay, the normally closed switch of the first circuit breaker, the 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 the second switch knob, the 6th auxiliary relay, the normally closed switch of the first circuit breaker, the 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 the second opening button and the 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 the second greensignal light with after the normal open switch of the first coupled switch of the second circuit breaker is connected at last; After being connected in series of the normally closed switch of the first coupled switch of the live wire of described uninterrupted power supply and the 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 the 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, the 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 the first change over switch is connected, again with being connected in parallel of the normal open switch of the second ACK button and the 7th auxiliary relay after, with after the 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, the first branch road is that the live wire of control bus is with after the switch of the diesel engine generator fault-signal of diesel engine generator control cabinet is connected, be connected with the first amber lamp again, be connected with the control bus ground wire at last; The second branch road is connected with the control bus ground wire after being being connected in series of the normal open switch of normally closed switch, the 8th auxiliary relay of control bus live wire and the second auxiliary relay and the first blue signal lamp again.
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 the first coupled switch of the 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 the first coupled switch of the first circuit breaker are connected successively again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220358455 CN202798136U (en) | 2012-07-24 | 2012-07-24 | Switching circuit of power supplies of transformer and large-power diesel generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220358455 CN202798136U (en) | 2012-07-24 | 2012-07-24 | Switching circuit of power supplies of transformer and large-power diesel generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202798136U true CN202798136U (en) | 2013-03-13 |
Family
ID=47825310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220358455 Withdrawn - After Issue CN202798136U (en) | 2012-07-24 | 2012-07-24 | Switching circuit of power supplies of transformer and large-power diesel generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202798136U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751783A (en) * | 2012-07-24 | 2012-10-24 | 中冶南方工程技术有限公司 | Switching circuit for power supplies of high-power diesel engine generator and transformer |
| CN104167713A (en) * | 2014-08-21 | 2014-11-26 | 刘剑华 | Automatic brake opening protection device for loss of voltage of high-tension switch board low-voltage power source |
| CN108471163A (en) * | 2018-05-31 | 2018-08-31 | 广西玉柴机器股份有限公司 | A kind of alternate power autocast control device |
| CN110768370A (en) * | 2019-10-18 | 2020-02-07 | 杭州东氿科技有限公司 | Intelligent control system and method for electrical equipment of power supply and distribution system |
-
2012
- 2012-07-24 CN CN 201220358455 patent/CN202798136U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751783A (en) * | 2012-07-24 | 2012-10-24 | 中冶南方工程技术有限公司 | Switching circuit for power supplies of high-power diesel engine generator and transformer |
| CN102751783B (en) * | 2012-07-24 | 2014-08-13 | 中冶南方工程技术有限公司 | Switching circuit for power supplies of high-power diesel engine generator and transformer |
| CN104167713A (en) * | 2014-08-21 | 2014-11-26 | 刘剑华 | Automatic brake opening protection device for loss of voltage of high-tension switch board low-voltage power source |
| CN108471163A (en) * | 2018-05-31 | 2018-08-31 | 广西玉柴机器股份有限公司 | A kind of alternate power autocast control device |
| CN108471163B (en) * | 2018-05-31 | 2023-10-27 | 广西玉柴机器股份有限公司 | Automatic switching control device for standby power supply |
| CN110768370A (en) * | 2019-10-18 | 2020-02-07 | 杭州东氿科技有限公司 | Intelligent control system and method for electrical equipment of power supply and distribution system |
| CN110768370B (en) * | 2019-10-18 | 2021-12-07 | 杭州东氿科技有限公司 | Intelligent control system and method for electrical equipment of power supply and distribution system |
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