CN201956900U - Direct-current power for ensuring in-place energy storage of energy storage motor for circuit breaker and load switch - Google Patents
Direct-current power for ensuring in-place energy storage of energy storage motor for circuit breaker and load switch Download PDFInfo
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- CN201956900U CN201956900U CN2011200884305U CN201120088430U CN201956900U CN 201956900 U CN201956900 U CN 201956900U CN 2011200884305 U CN2011200884305 U CN 2011200884305U CN 201120088430 U CN201120088430 U CN 201120088430U CN 201956900 U CN201956900 U CN 201956900U
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Abstract
The utility model discloses a direct current power for ensuring in-place energy storage of an energy storage motor for a circuit breaker and a load switch, which comprises an alternating input filter circuit that is connected with a constant current charging circuit and an energy storing circuit in series, wherein one line at the output end of the energy storing circuit is sequentially connected with a DC or DC convertor, a sampling resistor R1, a switch knob K1and a spring operation mechanism in series, the other line at the output end of the energy storing circuit is connected with a first input end A1 of a detection and control circuit, a second input end A2 of the detection and control circuit is connected with the output end of the output current sampling circuit which is connected with two ends of the sampling resistor R1, a first output end B1 of the detection and control circuit is connected with the DC or DC convertor, a second output end B2 of the detection and control circuit is connected with a monitor device. The direct current power has the beneficial effects that the detection and control circuit and the output current sampling circuit control the DC or DC convertor so as to guarantee that the spring operation mechanism in the breaker or the load switch has complete energy storage even if the power energy is insufficient.
Description
Technical field
The utility model relates to DC power supply, particularly be the DC power supply of guaranteeing that the energy storage motor energy storage of circuit breaker and on-load switch puts in place.
Background technology
Circuit breaker and on-load switch are one of key equipments of power transmission and distribution.Circuit breaker or on-load switch close a floodgate, and electric energy is outwards carried by circuit breaker or on-load switch; Circuit breaker or on-load switch separating brake, electric energy stop to carry, and can overhaul circuit breaker or on-load switch and circuit.The circuit breaker of 10-35kV or on-load switch generally adopt electromagnetic operating mechanism or spring operating mechanism.In recent years, it is more and more universal that 10-35kV has the circuit breaker or the on-load switch of spring operating mechanism.
The operation principle of spring mechanism is: the dependence energy storage motor draws back switching-in spring or compresses---give the switching-in spring energy storage, utilize the energy of switching-in spring to discharge drive circuit breaker or on-load switch combined floodgate, give the tripping spring energy storage simultaneously, drive breaker open operation when the tripping spring energy discharges.Be that spring operating mechanism is to need power supply to provide enough energy to move to energy storage motor.
In the prior art, the power supply energy shortage often occurs, the energy shortage of power supply is to keep energy storage motor to the complete energy storage of spring and cause energy storage phenomenon not in place, and promptly energy-stored spring is not fully withdrawn or compresses.So not only operation at that time can not be finished; when power up once more during energy storage; switching-in spring is to begin to continue to draw back or compress from drawing back or compressing part position at this moment; because of impulse current is crossed the overload protection element that conference causes electric motor loop---the fuse action disconnects the electric motor loop power supply, stops supply of electrical energy.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, the DC power supply that provides a kind of energy storage motor energy storage of guaranteeing circuit breaker and on-load switch under the situation of power supply electric weight deficiency to put in place.
The technical scheme that solves the problems of the technologies described above: the DC power supply that a kind of energy storage motor energy storage of guaranteeing circuit breaker and on-load switch puts in place, described DC power supply comprises: the interchange input filter circuit that connects the 220V AC power connect successively constant current charge circuit and accumulator; The accumulator output divides two following circuits to connect: a circuit is in series with successively: DC/DC converter, sampling resistor R1, shift knob K1, spring operating mechanism; The first input end A1 of another circuit joint detection and control circuit, the second input A2 of detection and control circuit connects the output of output current sample circuit, the output current sample circuit is connected in parallel on sampling resistor R1 two ends, the first output B1 of detection and control circuit connects the DC/DC converter, and the second output B2 of detection and control circuit connects supervising device.
The beneficial effects of the utility model are: the utility model is controlled the work of DC/DC converter by detection and control circuit and output current sample circuit, thereby suppress when the power supply energy deficiency occurring, to cause circuit breaker or on-load switch medi-spring operating mechanism energy storage phenomenon not in place, reduce accident rate, satisfied the need of work of spring operating mechanism.
Description of drawings
Fig. 1 is the utility model circuit block diagram;
Fig. 2 is the connection diagram of detection and control circuit and output current sample circuit among Fig. 1.
Sequence number explanation in the accompanying drawing
1: exchange input filter circuit; 2: the constant current charge circuit; 3: accumulator; The 4:DC/DC converter; 7: detect and control circuit; 9: the output current sample circuit; 10: supervising device; 12: spring operating mechanism; 13: the first comparators; 14: the second comparators; A, B: node; A1: first input end, A2: second input; B1: first output, B2: second output; K1: shift knob; VREF: reference voltage; D3: diode; D4: two common cathode diodes; IN+, IN-: the input of differential amplifier IC4; R1: sampling resistor; VCC: supply power voltage; VDD: power end; GND: earth terminal; C13, C11, C23, C24, C26, C29: electric capacity; R6, R7, R14, R15, R16, R17, R18, R19, R20, R21, R24: resistance.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the utility model circuit block diagram; Fig. 2 is the connection diagram of detection and control circuit and output current sample circuit among Fig. 1.
As shown in Figure 1 and Figure 2, the DC power supply that the utility model provides a kind of energy storage motor energy storage of guaranteeing circuit breaker and on-load switch to put in place, described DC power supply comprises: the interchange input filter circuit 1 that connects the 220V AC power connect successively constant current charge circuit 2 and accumulator 3; Accumulator 3 outputs divide two following circuits to connect: a circuit is in series with successively: DC/DC converter 4, sampling resistor R1, shift knob K1, spring operating mechanism 12; The first input end A1 of another circuit joint detection and control circuit 7, the second input A2 of detection and control circuit 7 connects the output of output current sample circuit 9, output current sample circuit 9 is connected in parallel on sampling resistor R1 two ends, the first output B1 of detection and control circuit 7 connects DC/DC converter 4, and the second output B2 of detection and control circuit 7 connects supervising device 10.
Described accumulator 3 comprises: a plurality of capacitances in series constitute capacitance group, constitute the bank of super capacitors accumulator by a plurality of capacitance group parallel connections again.
Described detection and control circuit 7 comprise: the first input end A1 of detection and control circuit 7 divides two circuits: wherein connect supervising device 10 by the second output B2 behind a circuit series resistance R24; Another circuit is series resistance R6 and resistance R 7 back ground connection successively, and resistance R 6 is connected the positive input of first comparator 13, shunt capacitance C11 between node A and ground connection with the node A of resistance R 7; The reverse input end of first comparator 13 connects resistance R 14 and reference voltage V REF; Ground connection behind the reverse input end series capacitance C13 of first comparator 13; Connect two common cathode diode D4 again after connecting resistance R 16 between the output of first comparator 13 and its positive input, a diode among two common cathode diode D4 connects the remote control end REM of DC/DC converter 4 through the first output B1; Another diode among two common cathode diode D4 connects behind the reverse input end of second comparator 14 ground connection behind the series capacitance C29.First comparator, 13 upper end pins divide two circuits, and a circuit connects supply power voltage VCC (8.0v), ground connection behind another circuit series capacitance C23; First comparator, 13 lower end pin ground connection.
Second comparator, 14 positive inputs connect Node B between resistance R 19 and the resistance R 15, resistance R 15 other end ground connection, and resistance R 19 other ends connect reference voltage V REF, ground connection behind the reference voltage V REF series capacitance C24; Connect diode D3 between second comparator, 14 outputs and first comparator, 13 reverse input ends, connect resistance R 21 between second comparator, 14 outputs and its positive input; Second comparator, 14 reverse input ends connect resistance R 20 1 ends, and resistance R 20 connects the second input A2 in addition, and the second input A2 connects output current sample circuit 9.
Described output current sample circuit 9 comprises: differential amplifier IC4, resistance R 18, resistance R 17, capacitor C 26; Connect capacitor C 26 between two the input IN+ of differential amplifier IC4 and the IN-, be connected on behind the input IN+ series resistance R17 of differential amplifier IC4 between sampling resistor R1 and the shift knob K1 on the node; Be connected on the sampling resistor R1 other end behind the input IN-series resistance R18 of differential amplifier IC4; The second input A2 of the output OUT joint detection of differential amplifier IC4 and control circuit 7, the power end VDD joint detection of differential amplifier IC4 and the reference voltage V REF of control circuit 7, the earth terminal GND ground connection of differential amplifier IC4.
Described supervising device 10 is visual display, shows that energy-storage module 3 operating states, 4 outputs of DC/DC converter are whether normal and dead electricity and the undervoltage warning signal that exchanges input, direct current output can be provided.
More particularly, as shown in Figure 1, of the present utility model is to exchange input 220V voltage through exchanging the input that input filter circuit 1 is connected to constant current charge circuit 2, and constant current charge circuit 2 output DCs stream is accumulator 3 chargings, and the voltage of accumulator 3 rises gradually.When accumulator 3 voltages reach (startup/shutoff) threshold values of DC/DC converter 4 settings, if this moment is Push switch button K1, spring operating mechanism 12 runnings, sampling resistor R1 has electric current to pass through, and send control signal by output current sample circuit 9, detection and control circuit 7, force the work of DC/DC4 converter, accumulator 3 voltages begin to descend with the consumption of energy, and the dump energy of its storage can guarantee that spring operating mechanism carries out once complete spring energy-storage operation.The back is finished in operation forces the control signal of DC/DC converter 4 work to disappear, and DC/DC converter 4 stops output, waits for that accumulator 3 voltages could start when going back up to (startup/shutoff) threshold values of DC/DC converter 4 settings once more.As this moment not according to moving shift knob K1, DC/DC converter 4 is in Light Condition, consumed energy is very small, the voltage of accumulator 3 rose gradually with the charging interval, stopped when being full of electricity.
As shown in Figure 2, detection and control circuit 7 are two inputs: first input end A1, the second input A2; Two outputs are arranged: the first output B1, the second output B2.
Accumulator 3 voltage sampling signals have two circuits by first input end A1, and one meets the second output B2 to supervisory circuit 10 by resistance R 24; Another is connected to the positive input of first comparator 13 by resistance R 6 after resistance R 7 dividing potential drops.The reverse input end of first comparator 13 is connected to reference voltage V REF by resistance R 14.Resistance R 16 is positive feedback resistors, is connected between the output and positive input of first comparator 13, can form the hysteretic characteristic that is similar to Schmidt trigger, prevents misoperation.Two one of them diodes of common cathode diode D4 are connected to the remote control end REM of DC/DC converter 4 through the first output B1; Another diode is connected to the reverse input end of second comparator 14 among two common cathode diode D4.When first comparator, 13 output low levels, the remote control end REM of DC/DC converter 4 dragged down make it stop output, the input (reverse input end of second comparator 14) that also will receive the output current sampled signal simultaneously drags down, and prevents that interference signal from causing misoperation.Resistance R 20 is connected to output current sample circuit 9 through the second input A2, the current sampling signal signal is delivered to the reverse input end of second comparator 14.The voltage of the positive input of second comparator 14 is obtained through resistance R 19 and R15 dividing potential drop by reference voltage V REF.This voltage is compared with the output current sampled signal that is connected to second comparator, 14 reverse input ends.R21 is the positive feedback resistor that prevents misoperation.Second comparator 14 output low level when energy storage motor turns round drags down the reverse input end of first comparator 13 by diode D3, first comparator 13 is exported high level because of positive input voltage is higher than reverse input end, force DC/DC converter 4 in running order, up to finishing spring operating mechanism 12 energy storage.
Output current sample circuit 9 is made up of differential amplifier IC4 and resistance R 18, resistance R 17, capacitor C 26.In order not influence output circuit impedance, sampling resistor R1 selects a resistor that resistance is very little for use, and its two ends can produce small voltage difference when electric current flows through, and this small voltage difference is exactly initial current sampling signal.But just can deliver to after need amplifying earlier and detect and control circuit is handled because this initial signal voltage amplitude is too low.Differential amplifier IC4 can amplify 20 times with small voltage signal.The initialize signal that obtains on the sampling resistor R1 is through resistance R 17, and R18 and capacitor C 26 carry out being transported to after the RC filtering two input IN+ and the IN-of differential amplifier IC4.Differential amplifier IC4 exports from output OUT after the voltage difference between IN+ and the IN-is amplified 20 times.
The utility model compared with prior art, when advantage is that AC power has a power failure along with the prolongation of stand-by time and the increase of number of operations, the voltage of accumulator 3 descends gradually, when dropping to (starting/turn-off) threshold values of DC/DC converter 4 settings, detection and control circuit 7 quit work DC/DC converter 4. If pressed shift knob K1 before DC/DC converter 4 is about to quit work, detection and control circuit 7 can force DC/DC converters 4 finish current spring energy-storage operation, guarantee the complete action of breaker or on-load switch once.
Claims (5)
1. DC power supply that the energy storage motor energy storage of guaranteeing circuit breaker and on-load switch puts in place, it is characterized in that described DC power supply comprises: the interchange input filter circuit (1) that connects the 220V AC power connect successively constant current charge circuit (2) and accumulator (3); Accumulator (3) output divides two following circuits to connect: a circuit is in series with successively: DC/DC converter (4), sampling resistor R1, shift knob K1, spring operating mechanism (12); The first input end A1 of another circuit joint detection and control circuit (7), the second input A2 of detection and control circuit (7) connects the output of output current sample circuit (9), output current sample circuit (9) is connected in parallel on sampling resistor R1 two ends, the first output B1 of detection and control circuit (7) connects DC/DC converter (4), and the second output B2 of detection and control circuit (7) connects supervising device (10).
2. the DC power supply that puts in place according to the energy storage motor energy storage of guaranteeing circuit breaker and on-load switch described in the claim 1, it is characterized in that, described accumulator (3) comprising: a plurality of capacitances in series constitute capacitance group, constitute the bank of super capacitors accumulator by a plurality of capacitance group parallel connections again.
3. the DC power supply that puts in place according to the energy storage motor energy storage of guaranteeing circuit breaker and on-load switch described in the claim 1, it is characterized in that described detection and control circuit (7) comprising: the first input end A1 of detection and control circuit (7) divides two circuits: wherein connect supervising device (10) by the second output B2 behind a circuit series resistance R24; Another circuit is series resistance R6 and resistance R 7 back ground connection successively, and resistance R 6 is connected the positive input of first comparator (13), shunt capacitance C11 between node A and ground connection with the node A of resistance R 7; The reverse input end of first comparator (13) connects resistance R 14 and reference voltage V REF, ground connection behind the reverse input end series capacitance C13 of first comparator (13); Connect two common cathode diode D4 again after connecting resistance R 16 between the output of first comparator (13) and its positive input, a diode among two common cathode diode D4 connects the remote control end REM of DC/DC converter (4) through the first output B1; Another diode among two common cathode diode D4 connects behind the reverse input end of second comparator (14) ground connection behind the series capacitance C29; First comparator (13) upper end pin divides two circuits, and a circuit connects supply power voltage VCC, ground connection behind another circuit series capacitance C23; First comparator (13) lower end pin ground connection;
Second comparator (14) positive input connects Node B between resistance R 19 and the resistance R 15, resistance R 15 other end ground connection, and resistance R 19 other ends connect reference voltage V REF, ground connection behind the reference voltage V REF series capacitance C24; Connect diode D3 between second comparator (14) output and first comparator (13) reverse input end, connect resistance R 21 between second comparator (14) output and its positive input; Second comparator (14) reverse input end connects resistance R 20 1 ends, and resistance R 20 connects the second input A2 in addition, and the second input A2 connects output current sample circuit (9).
4. the DC power supply that puts in place according to the energy storage motor energy storage of guaranteeing circuit breaker and on-load switch described in the claim 1 is characterized in that, described output current sample circuit (9) comprising: differential amplifier IC4, resistance R 18, resistance R 17, capacitor C 26; Connect capacitor C 26 between two the input IN+ of differential amplifier IC4 and the IN-, be connected on behind the input IN+ series resistance R17 of differential amplifier IC4 between sampling resistor R1 and the shift knob K1 on the node; Be connected on the sampling resistor R1 other end behind the input IN-series resistance R18 of differential amplifier IC4; The second input A2 of the output OUT joint detection of differential amplifier IC4 and control circuit (7), the reference voltage V REF of the power end VDD joint detection of differential amplifier IC4 and control circuit (7), the earth terminal GND ground connection of differential amplifier IC4.
5. the DC power supply that puts in place according to the energy storage motor energy storage of guaranteeing circuit breaker and on-load switch described in the claim 1 is characterized in that, described supervising device (10) is a visual display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200884305U CN201956900U (en) | 2011-03-30 | 2011-03-30 | Direct-current power for ensuring in-place energy storage of energy storage motor for circuit breaker and load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200884305U CN201956900U (en) | 2011-03-30 | 2011-03-30 | Direct-current power for ensuring in-place energy storage of energy storage motor for circuit breaker and load switch |
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| Publication Number | Publication Date |
|---|---|
| CN201956900U true CN201956900U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200884305U Expired - Lifetime CN201956900U (en) | 2011-03-30 | 2011-03-30 | Direct-current power for ensuring in-place energy storage of energy storage motor for circuit breaker and load switch |
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| CN (1) | CN201956900U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158066A (en) * | 2011-03-30 | 2011-08-17 | 天津市三源电力设备制造有限公司 | Direct-current (DC) power supply for guaranteeing fully stored energy of stored energy motors of breaker and load switch |
| CN103280778A (en) * | 2013-04-19 | 2013-09-04 | 广东电网公司电力科学研究院 | Looped network shock-free switching off and on device and looped network breaker |
| CN112769103A (en) * | 2020-12-29 | 2021-05-07 | 上海稊米汽车科技有限公司 | Transient supporting protection system for super capacitor |
| CN113696785A (en) * | 2021-09-06 | 2021-11-26 | 鲨港科技(上海)有限公司 | Control circuit of series power supply pack, charging and discharging method and vehicle |
-
2011
- 2011-03-30 CN CN2011200884305U patent/CN201956900U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158066A (en) * | 2011-03-30 | 2011-08-17 | 天津市三源电力设备制造有限公司 | Direct-current (DC) power supply for guaranteeing fully stored energy of stored energy motors of breaker and load switch |
| CN102158066B (en) * | 2011-03-30 | 2015-04-22 | 天津市三源电力设备制造有限公司 | Direct-current (DC) power supply for guaranteeing fully stored energy of stored energy motors of breaker and load switch |
| CN103280778A (en) * | 2013-04-19 | 2013-09-04 | 广东电网公司电力科学研究院 | Looped network shock-free switching off and on device and looped network breaker |
| CN103280778B (en) * | 2013-04-19 | 2015-07-22 | 广东电网公司电力科学研究院 | Looped network shock-free switching off and on device and looped network breaker |
| CN112769103A (en) * | 2020-12-29 | 2021-05-07 | 上海稊米汽车科技有限公司 | Transient supporting protection system for super capacitor |
| CN112769103B (en) * | 2020-12-29 | 2022-06-28 | 上海稊米汽车科技有限公司 | Transient supporting protection system for super capacitor |
| CN113696785A (en) * | 2021-09-06 | 2021-11-26 | 鲨港科技(上海)有限公司 | Control circuit of series power supply pack, charging and discharging method and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110831 Effective date of abandoning: 20150422 |