CN101984539A - Magnetic blow-out switch operation controller - Google Patents
Magnetic blow-out switch operation controller Download PDFInfo
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- CN101984539A CN101984539A CN 201010559868 CN201010559868A CN101984539A CN 101984539 A CN101984539 A CN 101984539A CN 201010559868 CN201010559868 CN 201010559868 CN 201010559868 A CN201010559868 A CN 201010559868A CN 101984539 A CN101984539 A CN 101984539A
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Abstract
The invention discloses a magnetic blow-out switch operation controller, comprising a magnetic blow-out switch closing control unit, a magnetic blow-out switch opening/closing monitoring unit and a magnetic blow-out switch standby opening control unit. The magnetic blow-out switch operation controller adopts a mode that the high and low voltages of an operation circuit and a control circuit are completely separated so as to greatly improve the safe coefficient, small size printing plate welding type power relays are adopted, and the principles of capacity charge time delay and triode breakover are utilized to realize control so as to achieve miniaturization of the controller volume, convenient installation and arrangement, flexible control, low energy consumption, and good adaptivity of the operation voltage, thus being especially suitable for a microcomputer excitation system, and the excitation loop current of a generator can be cut off at any time, thus achieving the aim of rapidly cutting off the voltage of the generator.
Description
Technical field
The invention belongs to the electricity generation system automation field, be specifically related to a kind of field suppression switch operation control.
Background technology
We know that in generator excited system, field suppression switch is the main switch of generator excitation circuit, is commonly called as field circuit breaker, and it mainly acts on is to cut off the generator excitation circuit electric current at any time, reaches the purpose of quick reduction generator voltage.
Present existing field suppression switch operating control device, its field suppression switch control loop generally is made up of combined floodgate supervisory relay, closing line bag, closing time relay, separating brake supervisory relay, opening time relay and branch brake cable bag etc., and select for use the DC power supply of 110V～220V to carry out powered operation, as shown in Figure 1.Its closing operation control loop is made up of combined floodgate supervision, closing operation, self-sustaining and three unit of delaying time, and the sub-switching operation control loop is made up of separating brake supervision, sub-switching operation, three unit of reserve sub-switching operation.Though its operation control circuit is simple, but exist potential safety hazard, the closing operation control loop is long-term charged at the separating brake situation bag that rolls off the production line, the sub-switching operation control loop under the combined floodgate situation too, in case arbitrary operation control circuit short circuit is easy to cause the line bag to burn; Because supply power voltage is generally the direct current of 220V, and its time relay is selected DZS series mostly for use, and this series relay volume is big, difficulty in installation and layout consumes energy under the microcomputer excitation system obviously simultaneously; In the closing operation control loop, the time relay uses normally-closed contact, in case the relay fault is easy to the closing coil of scaling loss field suppression switch and operating voltage bad adaptability.
Summary of the invention
The invention provides a kind of field suppression switch operation control, volume is little, power consumption is low, good reliability, coefficient of safety height, can control the on/off switch operation of field suppression switch flexibly.
A kind of field suppression switch operation control comprises:
The field suppression switch switching-in control unit is connected with the closing operation loop, be used to control the closing operation contactor coil instantaneous electric, the time-delay dead electricity;
Field suppression switch on/off switch monitor unit is connected with the sub-switching operation loop with the closing operation loop respectively, is used to monitor closing operation loop and sub-switching operation loop works situation and output alarm signal when fault;
Field suppression switch reserve separating brake control unit is connected with reserve sub-switching operation loop with the sub-switching operation loop respectively, starts reserve sub-switching operation loop when being used for breaking down in the sub-switching operation loop.
Described field suppression switch switching-in control unit comprises: first resistance, second resistance, first photoelectric isolating circuit and include the low pressure contacting controling circuit of closing relay;
The normally opened contact of described closing relay, one end of first resistance and second resistance by 1. pin be connected with the positive input terminal in closing operation loop, the other end of the normally opened contact of described closing relay and first resistance by 2. pin be connected with the negative input end in closing operation loop, the other end of second resistance is connected with the first input end of described first photoelectric isolating circuit, second output head grounding of described first photoelectric isolating circuit, the four-input terminal of described first photoelectric isolating circuit is connected with low-tension supply is anodal, and the 3rd output of described first photoelectric isolating circuit is connected with described low pressure contacting controling circuit;
Described low pressure contacting controling circuit comprises five resistance, two voltage stabilizing didoes, a diode, two triodes, a light-emitting diode, an electric capacity and a closing relay; Wherein, one end of the 16 resistance and the 13 resistance is connected with the 3rd output of first photoelectric isolating circuit, the other end of the 16 resistance respectively with the positive pole of the tenth electric capacity, one end of the 19 resistance and the negative pole of the 11 voltage stabilizing didoe are connected, the positive pole of the 11 voltage stabilizing didoe is connected with the base stage of first triode, the negative pole of the tenth electric capacity, the other end of the 19 resistance all is connected with the low-tension supply negative pole with the emitter-base bandgap grading of first triode, the collector electrode of first triode respectively with the other end of the 13 resistance, the negative pole of the tenth voltage stabilizing didoe, one end of the 18 resistance connects, the positive pole of the tenth voltage stabilizing didoe is connected with the base stage of the 3rd triode, the emitter-base bandgap grading of the 3rd triode all is connected with the low-tension supply negative pole with the other end of the 18 resistance, one end of the collector electrode of the 3rd triode and the coil of closing relay, the positive pole of the 5th diode, the negative pole of first light-emitting diode connects, the positive pole of first light-emitting diode links to each other with an end of the tenth resistance, the other end of the other end of the tenth resistance and the coil of closing relay, the negative pole of the 5th diode all is connected with low-tension supply is anodal.
Described field suppression switch on/off switch monitor unit comprises: the 3rd resistance, the 4th resistance, second photoelectric isolating circuit, the 3rd photoelectric isolating circuit, the 8th diode, the 9th diode and include the low pressure on/off switch monitoring circuit of supervisory relay; One end of the 3rd resistance and the 4th resistance by the 3. pin be linked into closing operation loop and sub-switching operation loop with anodal connection of control bus, the other end of the 3rd resistance is connected with the first input end of described second photoelectric isolating circuit, second output of described second photoelectric isolating circuit by the 4. pin be connected with the closing operation loop, the four-input terminal of described second photoelectric isolating circuit is connected with low-tension supply is anodal, the 3rd output of described second photoelectric isolating circuit is connected with an end of the 8th diode, and the other end of the 8th diode is connected with described low pressure on/off switch monitoring circuit; The other end of the 4th resistance is connected with the first input end of described the 3rd photoelectric isolating circuit, second output of described the 3rd photoelectric isolating circuit by the 5. pin be connected with the sub-switching operation loop, the four-input terminal of described the 3rd photoelectric isolating circuit is connected with low-tension supply is anodal, the 3rd output of described the 3rd photoelectric isolating circuit is connected with an end of the 9th diode, and the other end of the 9th diode is connected with described low pressure on/off switch monitoring circuit; The normally opened contact of described supervisory relay is by the
With
Pin is connected output alarm signal with outside;
Described low pressure on/off switch monitoring circuit comprises: five resistance, electric capacity, two voltage stabilizing didoes, diode, light-emitting diode, two triodes and supervisory relay; Wherein, one end of the 17 resistance respectively with the negative pole of the 8th diode, the negative pole of the 9th diode connects, the other end of the 17 resistance and the negative pole of the 13 voltage stabilizing didoe, one end of the 21 resistance connects, the positive pole of the 13 voltage stabilizing didoe is connected with the base stage of second triode, the emitter-base bandgap grading of second triode all is connected with the low-tension supply negative pole with the other end of the 21 resistance, the collector electrode of second triode respectively with an end of the 20 resistance, the negative pole of the 12 voltage stabilizing didoe, the positive pole of the 11 electric capacity, one end of the 14 resistance connects, the negative pole of the 11 electric capacity is connected with the low-tension supply negative pole, the other end of the 20 resistance all is connected with the low-tension supply negative pole with the emitter-base bandgap grading of the 4th triode, the positive pole of the 12 voltage stabilizing didoe is connected with the base stage of the 4th triode, one end of the collector electrode of the 4th triode and the coil of supervisory relay, the positive pole of the 6th diode, the negative pole of second light-emitting diode connects, the positive pole of second light-emitting diode is connected the other end of the 11 resistance with an end of the 11 resistance, the other end of the 14 resistance, the negative pole of the 6th diode all is connected with low-tension supply is anodal with the other end of the coil of supervisory relay.
Described field suppression switch reserve separating brake control unit comprises: the 5th resistance, the 15 resistance, the 4th photoelectric isolating circuit and the low pressure reserve sub-gate control circuit that includes reserve separating brake relay, first normally opened contact of reserve separating brake relay and an end of the 5th resistance by 6. pin link to each other with the sub-switching operation loop, the other end of first normally opened contact of reserve separating brake relay by the 7. pin link to each other with reserve sub-switching operation loop, the other end of the 5th resistance is connected with the first input end of described the 4th photoelectric isolating circuit, second output of described the 4th photoelectric isolating circuit is connected with the low-tension supply negative pole, the four-input terminal of described the 4th photoelectric isolating circuit is connected with low-tension supply is anodal, the 3rd output of described the 4th photoelectric isolating circuit is connected with an end of the 15 resistance, the other end of the 15 resistance is connected with described low pressure reserve sub-gate control circuit, and second normally opened contact of reserve separating brake relay is by the
With
Pin is connected with outside, output reserve separating brake actuating signal;
Described low pressure reserve sub-gate control circuit comprises: the 12 resistance, the 22 resistance, the 7th diode, the 14 voltage stabilizing didoe, the 12 electric capacity, the 3rd light-emitting diode, the 5th triode and reserve separating brake relay; Wherein, the positive pole of the 12 electric capacity, one end of the 22 resistance, the negative pole of the 14 voltage stabilizing didoe is connected with the other end of the 15 resistance respectively, the negative pole of the 12 electric capacity, the other end of the 22 resistance all is connected with the low-tension supply negative pole with the emitter-base bandgap grading of the 5th triode, the positive pole of the 14 voltage stabilizing didoe is connected with the base stage of the 5th triode, the collector electrode of the 5th triode respectively with an end of the coil of reserve separating brake relay, the positive pole of the 7th diode, the negative pole of the 3rd light-emitting diode connects, the positive pole of the 3rd light-emitting diode is connected the other end of the 12 resistance with an end of the 12 resistance, the negative pole of the 7th diode, the other end of the coil of reserve separating brake relay all is connected with low-tension supply is anodal.
Low-tension supply is by the
With
Pin inserts.High voltage source is by the 8. pin ground connection.
In the optimized technical scheme, described low-tension supply is the direct current of 24V, and 110V～220V direct current supply is adopted in described closing operation loop and sub-switching operation loop.
In the optimized technical scheme, described closing relay, supervisory relay and reserve separating brake relay all adopt small-print plate solder type power relay, as G2RL-2A or G2RL-2 relay.
In the optimized technical scheme, the rated voltage of described closing relay coil, supervisory relay coil and three kinds of relay coils of reserve separating brake relay coil is direct current 12V, 24V or 48V.Correspondingly, the normally opened contact of three kinds of relay coils, that is: first and second normally opened contacts of first normally opened contact of first normally opened contact of closing relay coil, supervisory relay coil, reserve separating brake relay coil, its voltage is direct current 24V, 48V, 110V, 220V or 300V.
In the optimized technical scheme, the tenth electric capacity, the 11 electric capacity and the 12 electric capacity are electrochemical capacitor.
Operation principle of the present invention is:
The field suppression switch switching-in control unit receives the closing operation command signal of sending from the closing operation loop, the low pressure contacting controling circuit in this unit is triggered in the high electricity frequency of this direct current process photoelectricity isolation back, because the tenth electric capacity needs charging in this circuit, the conducting at once of first triode, low electricity directly triggers the 3rd triode conducting frequently, impel closing relay energising action simultaneously, the closing relay normally opened contact is also closed thereupon moving, the conducting of closing operation loop triggers the action of closing operation contactor, and field suppression switch is closed a floodgate.Time-delay through 0.6～0.8s, the tenth electric capacity charging in the low pressure contacting controling circuit is finished, the first triode triggering and conducting, and cause the 3rd triode to end, closing relay also discharges thereupon, and the closing relay normally opened contact disconnects, the outage of closing operation loop, the closing operation contactor discharges, and closing operation is finished.
When normal "on" position, the high electricity frequency of direct current is isolated the back through photoelectricity and is triggered the interior low pressure on/off switch monitoring circuit of field suppression switch on/off switch monitor unit, this moment the second triode triggering and conducting, the low electricity that inputs to supervisory relay by the outside directly returns with the low-tension supply negative pole through second triode and be connected frequently like this, and supervisory relay is no power all the time; In like manner when normal gate-dividing state, supervisory relay is no power all the time also, so just shows that the on/off switch operation circuit is no abnormal.When the on/off switch operation circuit has fault, the on/off switch operation circuit does not all have the high electric photoisolator that frequently triggers in this unit, the conducting of just having no idea of second triode in the low pressure monitoring circuit, frequently will directly trigger four triode conducting by the low electricity that the outside inputs to supervisory relay this moment, supervisory relay gets electronic work like this, supervisory relay normally opened contact closure, and send alarm signal.
When the separating brake contactor breaks down when failing timely disjunction field suppression switch, field suppression switch reserve separating brake control unit receives the sub-switching operation command signal of sending from the sub-switching operation loop, the high electricity of this direct current is frequently through the low pressure reserve sub-gate control circuit in the trigger element of photoelectricity isolation back, because the 12 electric capacity needs charging in this circuit, the conducting at once of the 5th triode, time-delay through 0.6～0.8s, the charging of the 12 electric capacity is finished, the 5th triode triggering and conducting, and impel reserve separating brake relay power to move, reserve separating brake relay normally open contact is also closed thereupon moving, and send reserve separating brake actuating signal, simultaneously, reserve sub-switching operation loop conducting and trigger reserve separating brake contactor action.
With respect to prior art, the present invention has following beneficial technical effects:
(1) the field suppression switch operation control adopts the mode that operation circuit and the high low-voltage of control circuit are isolated fully, thereby makes coefficient of safety be significantly improved.
(2) each relay is all selected small-print plate solder type power relay for use in the field suppression switch operation control, and utilizes electric capacity charging time-delay and triode conducting principle, makes the miniaturization that more becomes of controller volume, mounting arrangements is convenient, control is flexible, and energy consumption is low, is particularly useful for the microcomputer excitation system.
(3) in the field suppression switch switching-in control unit, the closing relay instantaneous operation, time-delay disconnects, in case therefore relay breaks down, also can not damage the closing coil of field suppression switch, and the relay operation voltage adaptation is good.
Description of drawings
Fig. 1 is the circuit diagram of the field suppression switch operation control of prior art.
Fig. 2 is the circuit diagram of field suppression switch operation control of the present invention.
Fig. 3 is the circuit diagram of field suppression switch switching-in control unit among the present invention.
Fig. 4 is the circuit diagram of field suppression switch on/off switch monitoring system unit among the present invention.
Fig. 5 is the circuit diagram of field suppression switch reserve separating brake control unit among the present invention.
Embodiment
The present invention is described in detail below in conjunction with embodiment and accompanying drawing.
Shown in Fig. 2～5, a kind of field suppression switch operation control comprises:
The field suppression switch switching-in control unit is connected with the closing operation loop, be used to control closing operation contactor 61HC coil instantaneous electric, the time-delay dead electricity;
Field suppression switch on/off switch monitor unit is connected with the sub-switching operation loop with the closing operation loop respectively, is used to monitor closing operation loop and sub-switching operation loop works situation and output alarm signal when fault;
Field suppression switch reserve separating brake control unit is connected with reserve sub-switching operation loop with the sub-switching operation loop respectively, starts reserve sub-switching operation loop when being used for breaking down in the sub-switching operation loop.
Shown in Fig. 2 and 3, the field suppression switch switching-in control unit comprises: first resistance R 1, second resistance R 2, first photoelectric isolating circuit, with the low pressure contacting controling circuit that includes closing relay, the normally opened contact 61ZJ_1 of closing relay, one end of first resistance R 1 and second resistance R 2 by 1. pin be connected with the positive input terminal in closing operation loop, the normally opened contact 61ZJ_1 of closing relay and the other end of first resistance R 1 by 2. pin be connected with the negative input end in closing operation loop, the other end of second resistance R 2 is connected with the first input end 1 of first photoelectric isolating circuit, second output, 2 ground connection of first photoelectric isolating circuit, the four-input terminal 4 of first photoelectric isolating circuit is connected with low-tension supply positive pole (DC+24V), and the 3rd output 3 of first photoelectric isolating circuit is connected with the low pressure contacting controling circuit;
Wherein, first photoelectric isolating circuit is made of the first photoisolator U1, the first diode D1 and first capacitor C 1, the end of the first diode D1 is connected the first input end 1 of the first photoisolator U1 with an end of first capacitor C 1, and links to each other with the other end of second resistance R 2; The other end of the other end of the first diode D1 and first capacitor C 1 links to each other with second output 2 of the first photoisolator U1 and ground connection;
Wherein, the low pressure contacting controling circuit comprises five resistance, two voltage stabilizing didoes, a diode, two triodes, a light-emitting diode, an electric capacity and a closing relay; Wherein, one end of the 16 resistance R 16 and the 13 resistance R 13 is connected with the 3rd output 3 of the first photoisolator U1 in first photoelectric isolating circuit, the other end of the 16 resistance R 16 respectively with the positive pole of the tenth capacitor C 10, one end of the 19 resistance R 19 and the negative pole of the 11 voltage stabilizing didoe D11 are connected, the positive pole of the 11 voltage stabilizing didoe D11 is connected with the base stage of the first triode T1, the negative pole of the tenth capacitor C 10, the other end of the 19 resistance R 19 all is connected with low-tension supply negative pole (DC-24V) with the emitter-base bandgap grading of the first triode T1, the collector electrode of the first triode T1 respectively with the other end of the 13 resistance R 13, the negative pole of the tenth voltage stabilizing didoe D10, one end of the 18 resistance R 18 connects, the positive pole of the tenth voltage stabilizing didoe D10 is connected with the base stage of the 3rd triode T3, the emitter-base bandgap grading of the 3rd triode T3 all is connected with low-tension supply negative pole (DC-24V) with the other end of the 18 resistance R 18, one end of the coil of the collector electrode of the 3rd triode T3 and closing relay 61ZJ, the positive pole of the 5th diode D5, the negative pole of the first light-emitting diode H1 connects, the positive pole of the first light-emitting diode H1 links to each other with an end of the tenth resistance R 10, the other end of the coil of the other end of the tenth resistance R 10 and closing relay 61ZJ, the negative pole of the 5th diode D5 all is connected with low-tension supply positive pole (DC+24V).
Shown in Fig. 2 and 4, field suppression switch on/off switch monitor unit comprises: the 3rd resistance R 3, the 4th resistance R 4, second photoelectric isolating circuit, the 3rd photoelectric isolating circuit, the 8th diode D8, the 9th diode D9 and include the low pressure on/off switch monitoring circuit of supervisory relay; One end of the 3rd resistance R 3 and the 4th resistance R 4 by the 3. pin be connected with anodal control bus+KM and be linked into closing operation loop and sub-switching operation loop, the other end of the 3rd resistance R 3 is connected with the first input end 1 of second photoelectric isolating circuit, second output 2 of second photoelectric isolating circuit by the 4. pin be connected with the closing operation loop, the four-input terminal 4 of second photoelectric isolating circuit is connected with low-tension supply positive pole (DC+24V), the 3rd output 3 of second photoelectric isolating circuit is connected with the end of the 8th diode D8, and the other end of the 8th diode D8 is connected with low pressure on/off switch monitoring circuit; The other end of the 4th resistance R 4 is connected with the first input end 1 of the 3rd photoelectric isolating circuit, second output 2 of the 3rd photoelectric isolating circuit by the 5. pin be connected with the sub-switching operation loop, the four-input terminal 4 of the 3rd photoelectric isolating circuit is connected with low-tension supply positive pole (DC+24V), the 3rd output 3 of the 3rd photoelectric isolating circuit is connected with the end of the 9th diode D9, and the other end of the 9th diode D9 is connected with low pressure on/off switch monitoring circuit; The normally opened contact K61_1 of supervisory relay is by the
With
Pin is connected output alarm signal with outside.
Wherein, second photoelectric isolating circuit is made of the second photoisolator U2, the second diode D2 and second capacitor C 2, the end of the second diode D2 is connected the first input end 1 of the second photoisolator U2 with an end of second capacitor C 2, and links to each other with the other end of the 3rd resistance R 3; Second output 2 of the other end of the other end of the second diode D2 and second capacitor C 2 and the second photoisolator U2 link to each other and with the 4. pin be connected;
Wherein, the 3rd photoelectric isolating circuit is made of the 3rd photoisolator U3, the 3rd diode D3 and the 3rd capacitor C 3, the end of the 3rd diode D3 is connected the first input end 1 of the 3rd photoisolator U3 with an end of the 3rd capacitor C 3, and links to each other with the other end of the 4th resistance R 4; Second output 2 of the other end of the other end of the 3rd diode D3 and the 3rd capacitor C 3 and the 3rd photoisolator U3 link to each other and with the 5. pin be connected;
Wherein, low pressure on/off switch monitoring circuit comprises: five resistance, electric capacity, two voltage stabilizing didoes, diode, light-emitting diode, two triodes and supervisory relay; Wherein, one end of the 17 resistance R 17 respectively with the negative pole of the 8th diode D8, the negative pole of the 9th diode D9 connects, the other end of the 17 resistance R 17 and the negative pole of the 13 voltage stabilizing didoe D13, one end of the 21 resistance R 21 connects, the positive pole of the 13 voltage stabilizing didoe D13 is connected with the base stage of the second triode T2, the emitter-base bandgap grading of the second triode T2 all is connected with low-tension supply negative pole (DC-24V) with the other end of the 21 resistance R 21, the collector electrode of the second triode T2 respectively with an end of the 20 resistance R 20, the negative pole of the 12 voltage stabilizing didoe D12, the positive pole of the 11 capacitor C 11, one end of the 14 resistance R 14 connects, the negative pole of the 11 capacitor C 11 is connected with low-tension supply negative pole (DC-24V), the other end of the 20 resistance R 20 all is connected with low-tension supply negative pole (DC-24V) with the emitter-base bandgap grading of the 4th triode T4, the positive pole of the 12 voltage stabilizing didoe D12 is connected with the base stage of the 4th triode T4, one end of the coil of the collector electrode of the 4th triode T4 and supervisory relay K61, the positive pole of the 6th diode D6, the negative pole of the second light-emitting diode H2 connects, the positive pole of the second light-emitting diode H2 is connected the other end of the 11 resistance R 11 with an end of the 11 resistance R 11, the other end of the 14 resistance R 14, the negative pole of the 6th diode D6 all is connected with low-tension supply positive pole (DC+24V) with the other end of the coil of supervisory relay K61.
Shown in Fig. 2 and 5, field suppression switch reserve separating brake control unit comprises: the 5th resistance R 5, the 15 resistance R 15, the 4th photoelectric isolating circuit, with the low pressure reserve sub-gate control circuit that includes reserve separating brake relay, the first normally opened contact 62ZJ_1 of reserve separating brake relay and an end of the 5th resistance R 5 by 6. pin link to each other with the sub-switching operation loop, the other end of the first normally opened contact 62ZJ_1 of reserve separating brake relay by the 7. pin link to each other with reserve sub-switching operation loop, the other end of the 5th resistance R 5 is connected with the first input end 1 of the 4th photoelectric isolating circuit, second output, 2 ground connection of the 4th photoelectric isolating circuit, the four-input terminal 4 of the 4th photoelectric isolating circuit is connected with low-tension supply positive pole (DC+24V), the 3rd output 3 of the 4th photoelectric isolating circuit is connected with an end of the 15 resistance R 15, the other end of the 15 resistance R 15 is connected with low pressure reserve sub-gate control circuit, and the second normally opened contact 62ZJ_2 of reserve separating brake relay is by the
With
Pin is connected with outside, output reserve separating brake actuating signal.
Wherein, the 4th photoelectric isolating circuit is made of the 4th photoisolator U4, the 4th diode D4 and the 4th capacitor C 4, the end of the 4th diode D4 is connected the first input end 1 of the 4th photoisolator U4 with an end of the 4th capacitor C 4, and is connected with the other end of the 5th resistance R 5; The other end of the other end of the 4th diode D4 and the 4th capacitor C 4 links to each other with second output 2 of the 4th photoisolator U4 and ground connection.
Wherein, low pressure reserve sub-gate control circuit comprises: the coil of the 12 resistance R the 12, the 22 resistance R 22, the seven diode D7, the 14 voltage stabilizing didoe D14, the 12 capacitor C 12, the 3rd light-emitting diode H3, the 5th triode T5 and reserve separating brake relay 62ZJ; Wherein, the positive pole of the 12 capacitor C 12, one end of the 22 resistance R 22, the negative pole of the 14 voltage stabilizing didoe D14 is connected with the other end of the 15 resistance R 15 respectively, the negative pole of the 12 capacitor C 12, the other end of the 22 resistance R 22 all is connected with low-tension supply negative pole (DC-24V) with the emitter-base bandgap grading of the 5th triode T5, the positive pole of the 14 voltage stabilizing didoe D14 is connected with the base stage of the 5th triode T5, the collector electrode of the 5th triode T5 respectively with an end of the coil of reserve separating brake relay 62ZJ, the positive pole of the 7th diode D7, the negative pole of the 3rd light-emitting diode H3 connects, the positive pole of the 3rd light-emitting diode H3 is connected the other end of the 12 resistance R 12 with an end of the 12 resistance R 12, the negative pole of the 7th diode D7, the other end of the coil of reserve separating brake relay 62ZJ all is connected with low-tension supply positive pole (DC+24V).
Low-tension supply is DC24V, by
With
Pin inserts.High voltage source is by the 8. pin ground connection.The tenth electric capacity, the 11 electric capacity and the 12 electric capacity are electrochemical capacitor.
The operation logic of above-mentioned field suppression switch operation control is as follows:
Shown in Fig. 2 and 3, when closing operation button 61HA closure, field suppression switch is in the disjunction state, its closing contactor FMK normally-closed contact FMK_1 closure, frequently through low pressure contacting controling circuit and ground connection in the first photoisolator U1 triggering field suppression switch switching-in control unit, its path is the high electricity of direct current:
+ KM → 61HA → FMK_1 → 1. pin → R2 → U1 (1) → U1 (2) → 8. pin →-KM
After photoelectricity is isolated triggering, the low electricity of first photoisolator U1 output frequently, because the tenth capacitor C 10 in the low pressure contacting controling circuit needs charging, the first triode T1 ends, the 3rd triode T3 conducting that takes the lead in, the coil electricity action of closing relay 61ZJ, its normally opened contact 61ZJ_1 closure, the conducting of closing operation loop triggers the action of closing operation contactor 61HC coil electricity, its auxiliary normally opened contact 61HC_1,61HC_2,61HC_3 is all closed, closing operation contactor 61HC self-sustaining, the conducting of feed motion loop trigger the action of field suppression switch closing contactor FMK coil electricity, and field suppression switch closes a floodgate.
The 3rd triode T3 guiding path is: DC+24V → the
Pin → U1 (4) → U1 (3) → R13 → D10 → T3 base stage (B) → T3 emitter (E) → the
Pin → DC-24V closing relay 61ZJ coil guiding path is: DC+24V → the
Pin → 61ZJ → T3 collector electrode (C) → T3 emitter (E) → the
Pin → DC-24V
Closing operation loop guiding path is :+KM → 61HA → FMK_1 → 1. pin → 61ZJ_1 → 2. pin → 61HC →-KM
Feed motion loop guiding path is :+HM → 61HC_2 → FMK → 61HC_3 →-HM
Closing operation contactor 61HC self-sustaining, the low electricity of first photoisolator U1 output also keeps frequently simultaneously, through 10 chargings of 16 pairs the tenth capacitor C of the 16 resistance R, time-delay through 0.6～0.8s, when the tenth capacitor C 10 both end voltage are higher than the 11 voltage stabilizing didoe D11 both end voltage value and add the first triode T1 turn-on voltage Vbe, the first triode T1 saturation conduction, and cause the 3rd triode T3 to end, closing relay 61ZJ coil also discharges thereupon, its normally opened contact 61ZJ_1 disconnects, the outage of closing operation loop, closing operation contactor 61HC coil discharges, and closing operation is finished.
The first triode T1 guiding path is: DC+24V → the
Pin → U1 (4) → U1 (3) → R16 → D11 → T1 base stage (B) → T1 emitter (E) → the
Pin → DC124V
Shown in Fig. 2 and 4, when normal "on" position, field suppression switch is in the disjunction state, its closing contactor FMK normally-closed contact FMK_1 closure, the high electricity of direct current triggers the low pressure on/off switch monitoring circuit in the field suppression switch on/off switch monitor unit through the second photoisolator U2 frequently and returns, and its path is:
+ KM → 3. pin → R3 → U2 (1) → U2 (2) → 4. pin → FMK_1 → 1. pin → R1 → 2. pin → 61HC →-KM
After photoelectricity is isolated triggering, the low electricity of second photoisolator U2 output frequently, this moment, the second triode T2 triggering and conducting inputed to the low electric frequently directly by way of the 14 resistance R 14 and second triode T2 and the ground connection of supervisory relay K61 coil by the outside like this, and supervisory relay K61 is no power all the time.
The second triode T2 guiding path is: DC+24V → the
Pin → U2 (4) → U2 (3) → D8 → R17 → D13 → T2 base stage (B) → T2 emitter (E) → the
Pin → DC-24VV
DC+24V → the
Pin → R14 → T2 collector electrode (C) → T2 emitter (E) → the
Pin → DC-24VV
When there is fault in the closing operation loop, the closing operation loop does not have high electricity to trigger the second photoisolator U2 frequently, the conducting of just having no idea of the second triode T2 in the low pressure on/off switch monitoring circuit, frequently will directly trigger four triode T4 conducting by the low electricity that the outside inputs to supervisory relay K61 coil this moment, supervisory relay K61 coil gets electronic work like this, its normally opened contact K61_1 closure, and send alarm signal.
Supervisory relay K61 coil guiding path is: DC+24V → the
Pin → K61 → T4 collector electrode (C) → T4 emitter (E) → the
Pin → DC-24VV
The alarm signal guiding path is: circuit 671 → the
Pin → K61_1 → the
Pin → circuit 673
When normal gate-dividing state, field suppression switch is in closure state, its closing contactor FMK normally opened contact FMK_2 closure, the high electricity of direct current triggers the low pressure on/off switch monitoring circuit in the field suppression switch on/off switch monitor unit through the 3rd photoisolator U3 frequently and returns, and its path is:
+ KM → 3. pin → R4 → U3 (1) → U3 (2) → 5. pin → FMK_2 → FMK_TQ1 →-KM
After photoelectricity is isolated triggering, the low electricity of the 3rd photoisolator U3 output frequently, this moment, the second triode T2 triggering and conducting inputed to the low electric frequently directly by way of the 14 resistance R 14 and second triode T2 and the ground connection of supervisory relay K61 coil by the outside like this, and supervisory relay K61 is no power all the time.
The second triode T2 guiding path is: DC+24V → the
Pin → U3 (4) → U3 (3) → D9 → R17 → D13 → T2 base stage (B) → T2 emitter (E) → the
Pin → DC-24VV
DC+24V → the
Pin → R14 → T2 collector electrode (C) → T2 emitter (E) → the
Pin → DC-24V
When there is fault in the sub-switching operation loop, the sub-switching operation loop does not have high electricity to trigger the 3rd photoisolator U3 frequently, the conducting of just having no idea of the second triode T2 in the low pressure on/off switch monitoring circuit, frequently will directly trigger four triode T4 conducting by the low electricity that the outside inputs to supervisory relay K61 coil this moment, supervisory relay K61 coil gets electronic work like this, its normally opened contact K61_1 closure, and send alarm signal.
Supervisory relay K61 coil guiding path is: DC+24V → the
Pin → K61 → T4 collector electrode (C) → T4 emitter (E) → the
Pin → DC-24VV
The alarm signal guiding path is: circuit 671 → the
Pin → K61_1 → the
Pin → circuit 673
Accident analysis:
The second photoisolator U2 and the 3rd photoisolator U3 do not have when hanging down electric frequently output, reserve separating brake relay 62ZJ deferred action, and corresponding working condition is:
(1) direct current 24V power supply is arranged, (+KM-KM) operating power disappears.
(2) field suppression switch closure state, field suppression switch closing contactor FMK normally opened contact FMK_2 does not have closure.
(3) field suppression switch closure state, field suppression switch separating brake contactor FMK_TQ1 coil blackout.
When the second photoisolator U2 and the 3rd photoisolator U3 had low electricity frequently to export, reserve separating brake relay 62ZJ was failure to actuate, and corresponding working condition is:
(1) direct current 24V power supply disappears.
(2) field suppression switch disjunction state, field suppression switch closing contactor FMK normally opened contact FMK_2 does not disconnect.
(3) normal operative condition.
Shown in Fig. 2 and 5, when separating brake contactor FMK_TQ1 breaks down when failing timely disjunction field suppression switch, field suppression switch reserve separating brake control unit receives the sub-switching operation command signal of sending from the sub-switching operation loop, frequently through low pressure reserve sub-gate control circuit and ground connection in the 4th photoelectricity isolation U4 triggering field suppression switch reserve separating brake control unit, its path is the high electricity of this direct current:
+ KM → 61TA → FMK_2 → 6. pin → R5 → U4 (1) → U4 (2) → 8. pin →-KM
After photoelectricity is isolated triggering, the low electricity of the 4th photoisolator U4 output frequently, because the 12 capacitor C 12 in the low pressure reserve sub-gate control circuit needs charging, the 5th triode T5 conducting at once, time-delay through 0.6～0.8s, the 12 electrolysis C12 charging is finished, the 5th triode T5 triggering and conducting, and impel reserve separating brake relay 62ZJ coil electricity to move, and provide the reserve sub-gate signal to the outside by its second normally opened contact 62ZJ_2, its first normally opened contact 62ZJ_1 is also closed thereupon moving, and 6 conductings of reserve sub-switching operation loop also trigger the action of reserve separating brake contactor FMK_TQ2 coil electricity, field suppression switch separating brake.
The 5th triode T5 guiding path is: DC+24V → the
Pin → U4 (4) → U4 (3) → R15 → D14 → T5 base stage (B) → T5 emitter (E) → the
Pin → DC-24V
Reserve separating brake relay 62ZJ coil guiding path is: DC+24V → the
Pin → 61ZJ → T5 collector electrode (C) → T5 emitter (E) → the
Pin → DC-24V
Reserve sub-switching operation loop guiding path is :+KM → 61TA → FMK_2 → 6. pin → 62ZJ_1 → 7. pin → FMK_TQ2 →-KM
Reserve sub-gate signal guiding path is: the
Pin → 61ZJ_2 → the
Pin.
Above-mentioned field suppression switch operation control, the mode that adopts operation circuit and the high low-voltage of control circuit to isolate fully, thereby make coefficient of safety be significantly improved, each relay is selected small-print plate solder type power relay for use and is utilized electric capacity charging time-delay and triode conducting principle to realize control, make the miniaturization that more becomes of controller volume, mounting arrangements is convenient, control flexibly, energy consumption is low, operating voltage adaptability is good, be particularly useful for the microcomputer excitation system, can control at any time and cut off the generator excitation circuit electric current, reach the purpose of quick reduction generator voltage.
Claims (10)
1. a field suppression switch operation control is characterized in that, comprising:
The field suppression switch switching-in control unit is connected with the closing operation loop, be used to control the coil of closing operation contactor instantaneous electric, time-delay dead electricity;
Field suppression switch on/off switch monitor unit is connected with the sub-switching operation loop with the closing operation loop respectively, is used to monitor closing operation loop and sub-switching operation loop works situation and output alarm signal when fault;
Field suppression switch reserve separating brake control unit is connected with reserve sub-switching operation loop with the sub-switching operation loop respectively, starts reserve sub-switching operation loop when being used for breaking down in the sub-switching operation loop.
2. field suppression switch operation control according to claim 1 is characterized in that, described field suppression switch switching-in control unit comprises: first resistance, second resistance, first photoelectric isolating circuit and include the low pressure contacting controling circuit of closing relay;
The normally opened contact of described closing relay, one end of first resistance and second resistance by 1. pin be connected with the positive input terminal in closing operation loop, the other end of the normally opened contact of described closing relay and first resistance by 2. pin be connected with the negative input end in closing operation loop, the other end of second resistance is connected with the first input end of described first photoelectric isolating circuit, second output head grounding of described first photoelectric isolating circuit, the four-input terminal of described first photoelectric isolating circuit is connected with low-tension supply is anodal, and the 3rd output of described first photoelectric isolating circuit is connected with described low pressure contacting controling circuit;
Described low pressure contacting controling circuit comprises five resistance, two voltage stabilizing didoes, a diode, two triodes, a light-emitting diode, an electric capacity and a closing relay; Wherein, one end of the 16 resistance and the 13 resistance is connected with the 3rd output of first photoelectric isolating circuit, the other end of the 16 resistance respectively with the positive pole of the tenth electric capacity, one end of the 19 resistance and the negative pole of the 11 voltage stabilizing didoe are connected, the positive pole of the 11 voltage stabilizing didoe is connected with the base stage of first triode, the negative pole of the tenth electric capacity, the other end of the 19 resistance all is connected with the low-tension supply negative pole with the emitter-base bandgap grading of first triode, the collector electrode of first triode respectively with the other end of the 13 resistance, the negative pole of the tenth voltage stabilizing didoe, one end of the 18 resistance connects, the positive pole of the tenth voltage stabilizing didoe is connected with the base stage of the 3rd triode, the emitter-base bandgap grading of the 3rd triode all is connected with the low-tension supply negative pole with the other end of the 18 resistance, one end of the collector electrode of the 3rd triode and the coil of closing relay, the positive pole of the 5th diode, the negative pole of first light-emitting diode connects, the positive pole of first light-emitting diode links to each other with an end of the tenth resistance, the other end of the other end of the tenth resistance and the coil of closing relay, the negative pole of the 5th diode all is connected with low-tension supply is anodal.
3. field suppression switch operation control according to claim 1 is characterized in that: described field suppression switch on/off switch monitor unit comprises: the 3rd resistance, the 4th resistance, second photoelectric isolating circuit, the 3rd photoelectric isolating circuit, the 8th diode, the 9th diode and include the low pressure on/off switch monitoring circuit of supervisory relay; One end of the 3rd resistance and the 4th resistance by the 3. pin be linked into closing operation loop and sub-switching operation loop with anodal connection of control bus, the other end of the 3rd resistance is connected with the first input end of described second photoelectric isolating circuit, second output of described second photoelectric isolating circuit by the 4. pin be connected with the closing operation loop, the four-input terminal of described second photoelectric isolating circuit is connected with low-tension supply is anodal, the 3rd output of described second photoelectric isolating circuit is connected with an end of the 8th diode, and the other end of the 8th diode is connected with described low pressure on/off switch monitoring circuit; The other end of the 4th resistance is connected with the first input end of described the 3rd photoelectric isolating circuit, second output of described the 3rd photoelectric isolating circuit by the 5. pin be connected with the sub-switching operation loop, the four-input terminal of described the 3rd photoelectric isolating circuit is connected with low-tension supply is anodal, the 3rd output of described the 3rd photoelectric isolating circuit is connected with an end of the 9th diode, and the other end of the 9th diode is connected with described low pressure on/off switch monitoring circuit; The normally opened contact of described supervisory relay is by the
With
Pin is connected output alarm signal with outside;
Described low pressure on/off switch monitoring circuit comprises: five resistance, electric capacity, two voltage stabilizing didoes, diode, light-emitting diode, two triodes and supervisory relay; Wherein, one end of the 17 resistance respectively with the negative pole of the 8th diode, the negative pole of the 9th diode connects, the other end of the 17 resistance and the negative pole of the 13 voltage stabilizing didoe, one end of the 21 resistance connects, the positive pole of the 13 voltage stabilizing didoe is connected with the base stage of second triode, the emitter-base bandgap grading of second triode all is connected with the low-tension supply negative pole with the other end of the 21 resistance, the collector electrode of second triode respectively with an end of the 20 resistance, the negative pole of the 12 voltage stabilizing didoe, the positive pole of the 11 electric capacity, one end of the 14 resistance connects, the negative pole of the 11 electric capacity is connected with the low-tension supply negative pole, the other end of the 20 resistance all is connected with the low-tension supply negative pole with the emitter-base bandgap grading of the 4th triode, the positive pole of the 12 voltage stabilizing didoe is connected with the base stage of the 4th triode, one end of the collector electrode of the 4th triode and the coil of supervisory relay, the positive pole of the 6th diode, the negative pole of second light-emitting diode connects, the positive pole of second light-emitting diode is connected the other end of the 11 resistance with an end of the 11 resistance, the other end of the 14 resistance, the negative pole of the 6th diode all is connected with low-tension supply is anodal with the other end of the coil of supervisory relay.
4. field suppression switch operation control according to claim 1, it is characterized in that: described field suppression switch reserve separating brake control unit comprises: the 5th resistance, the 15 resistance, the 4th photoelectric isolating circuit and the low pressure reserve sub-gate control circuit that includes reserve separating brake relay, first normally opened contact of reserve separating brake relay and an end of the 5th resistance by 6. pin link to each other with the sub-switching operation loop, the other end of first normally opened contact of reserve separating brake relay by the 7. pin link to each other with reserve sub-switching operation loop, the other end of the 5th resistance is connected with the first input end of described the 4th photoelectric isolating circuit, second output of described the 4th photoelectric isolating circuit is connected with the low-tension supply negative pole, the four-input terminal of described the 4th photoelectric isolating circuit is connected with low-tension supply is anodal, the 3rd output of described the 4th photoelectric isolating circuit is connected with an end of the 15 resistance, the other end of the 15 resistance is connected with described low pressure reserve sub-gate control circuit, and second normally opened contact of reserve separating brake relay is by the
With
Pin is connected with outside, output reserve separating brake actuating signal;
Described low pressure reserve sub-gate control circuit comprises: the 12 resistance, the 22 resistance, the 7th diode, the 14 voltage stabilizing didoe, the 12 electric capacity, the 3rd light-emitting diode, the 5th triode and reserve separating brake relay; Wherein, the positive pole of the 12 electric capacity, one end of the 22 resistance, the negative pole of the 14 voltage stabilizing didoe is connected with the other end of the 15 resistance respectively, the negative pole of the 12 electric capacity, the other end of the 22 resistance all is connected with the low-tension supply negative pole with the emitter-base bandgap grading of the 5th triode, the positive pole of the 14 voltage stabilizing didoe is connected with the base stage of the 5th triode, the collector electrode of the 5th triode respectively with an end of the coil of reserve separating brake relay, the positive pole of the 7th diode, the negative pole of the 3rd light-emitting diode connects, the positive pole of the 3rd light-emitting diode is connected the other end of the 12 resistance with an end of the 12 resistance, the negative pole of the 7th diode, the other end of the coil of reserve separating brake relay all is connected with low-tension supply is anodal.
5. according to the arbitrary described field suppression switch operation control of claim 2～4, it is characterized in that: described low-tension supply is the direct current of 24V.
6. according to the arbitrary described field suppression switch operation control of claim 2～4, it is characterized in that: described closing relay, supervisory relay and reserve separating brake relay all adopt printed panel solder type power relay.
7. according to the arbitrary described field suppression switch operation control of claim 2～4, it is characterized in that: the rated voltage of described closing relay coil, supervisory relay coil and reserve separating brake relay coil is direct current 12V, 24V or 48V.
8. according to the arbitrary described field suppression switch operation control of claim 2～4, it is characterized in that: the voltage of first and second normally opened contacts of first normally opened contact of described closing relay coil, first normally opened contact of supervisory relay coil, reserve separating brake relay coil is direct current 24V, 48V, 110V, 220V or 300V.
9. according to the arbitrary described field suppression switch operation control of claim 2～4, it is characterized in that: described the tenth electric capacity, the 11 electric capacity or the 12 electric capacity are electrochemical capacitor.
10. according to the arbitrary described field suppression switch operation control of claim 1～4, it is characterized in that: 110V～220V direct current supply is adopted in described closing operation loop and sub-switching operation loop.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105598687A CN101984539B (en) | 2010-11-25 | 2010-11-25 | Magnetic blow-out switch operation controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105598687A CN101984539B (en) | 2010-11-25 | 2010-11-25 | Magnetic blow-out switch operation controller |
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| CN101984539A true CN101984539A (en) | 2011-03-09 |
| CN101984539B CN101984539B (en) | 2012-07-25 |
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| CN102621406A (en) * | 2012-04-11 | 2012-08-01 | 南通中远船务自动化有限公司 | Phase sequence detection method for high-voltage system |
| CN106505511A (en) * | 2016-12-29 | 2017-03-15 | 重庆市渝展电气有限公司 | Circuit for automatic time delay conducting after switch trip |
| CN108181528A (en) * | 2017-12-31 | 2018-06-19 | 中国能源建设集团华东电力试验研究院有限公司 | The high-tension cable differential protection check system of no load condition |
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| EP1099232B1 (en) * | 1999-03-31 | 2007-08-15 | AEG Niederspannungstechnik GmbH & Co. KG | Arc extinguishing aid |
| CN201444464U (en) * | 2009-01-05 | 2010-04-28 | 山东泰开真空开关有限公司 | Novel control system of permanent magnetic mechanism of vacuum circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102621406A (en) * | 2012-04-11 | 2012-08-01 | 南通中远船务自动化有限公司 | Phase sequence detection method for high-voltage system |
| CN106505511A (en) * | 2016-12-29 | 2017-03-15 | 重庆市渝展电气有限公司 | Circuit for automatic time delay conducting after switch trip |
| CN106505511B (en) * | 2016-12-29 | 2018-09-11 | 重庆市渝展电气有限公司 | The circuit be connected for automatic time delay after switch trip |
| CN108181528A (en) * | 2017-12-31 | 2018-06-19 | 中国能源建设集团华东电力试验研究院有限公司 | The high-tension cable differential protection check system of no load condition |
| CN108181528B (en) * | 2017-12-31 | 2020-07-31 | 中国能源建设集团华东电力试验研究院有限公司 | High-voltage cable differential protection checking system in no-load state |
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| CN101984539B (en) | 2012-07-25 |
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