A portable intelligent ring main unit circuit breaker multifunctional emergency operation power supply

Abstract

A portable intelligent ring network cabinet circuit breaker multifunctional emergency operation power supply relates to the technical field of high-voltage intelligent circuit breaker ring network cabinet switch operating system. It includes a DC / DC power supply module, a first single-pole double-throw switch, a second single-pole double-throw switch, a hand-cranked generator, a hand-cranked generator charging module, a drive detection module, and a power supply module; the drive detection module is used to detect the IGBT drive module of the ring network cabinet circuit breaker; the output end of the DC / DC power supply module is connected to an energy storage capacitor group, and the two fixed ends of the first single-pole double-throw switch and the second single-pole double-throw switch are respectively connected in parallel to the two ends of the energy storage capacitor group; the output end of the hand-cranked generator charging module is connected to the energy storage capacitor group. The present invention can detect the permanent magnet guide drive of the intelligent ring network cabinet circuit breaker control unit on site, protecting the emergency operation power supply; and can generate different operating voltage values ​​to close or open the corresponding intelligent ring network cabinet circuit breaker permanent magnet vacuum switch.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage intelligent circuit breaker ring network cabinet switch operating system, in particular to a portable intelligent ring network cabinet circuit breaker multifunctional emergency operating power supply. Background Art

[0002] Vacuum ring main units and circuit breakers using permanent magnetic operating mechanisms have been widely used by users due to their high reliability and maintenance-free performance. The permanent magnetic operating mechanism has a fast action speed and can achieve rapid protection, instantly cut off the fault current on the line, and protect the power supply equipment. The permanent magnetic operating mechanism is widely used in the field of vacuum switches due to its simple structure, small number of parts, high reliability, long operating life, small action dispersion, and matching with the load characteristics of the vacuum interrupter. The permanent magnetic operating mechanism uses the electromagnetic force generated by the permanent magnet to keep the vacuum interrupter closed or open, without the need for a tripping and locking device.

[0003] The operating energy of the permanent magnet operating mechanism of the intelligent ring main unit and circuit breaker using permanent magnet mechanism is provided by the energy storage capacitor. When the on-site AC and battery are out of power, the energy storage capacitor on the equipment cannot be charged, the intelligent ring main unit or circuit breaker cannot be opened or closed, and it is impossible to determine whether the permanent magnet drive in the intelligent ring main unit circuit breaker control unit is faulty. Summary of the invention

[0004] The purpose of the present invention is to provide a portable multifunctional emergency operating power supply for intelligent ring main unit circuit breaker, so as to detect the permanent magnet guide drive of the intelligent ring main unit circuit breaker control unit on site and protect the operating power supply box from damage.

[0005] The technical scheme for achieving the above-mentioned purpose is: a portable intelligent ring main unit circuit breaker multifunctional emergency operation power supply, which is used for emergency control of the ring main unit circuit breaker, and is characterized by comprising a DC / DC power supply module, a first single-pole double-throw switch, a second single-pole double-throw switch, a hand-cranked generator, a hand-cranked generator charging module, a drive detection module, and a power supply module for supplying power to the drive detection module and the hand-cranked generator charging module;

[0006] The drive detection module is detachably electrically connected to the permanent magnetic coil of the ring main unit circuit breaker, and is used to detect the IGBT drive module of the ring main unit circuit breaker;

[0007] The input end of the DC / DC power supply module is used to connect to a DC power supply, and the output end is connected to an energy storage capacitor group. The two fixed ends of the first single-pole double-throw switch and the second single-pole double-throw switch are respectively connected in parallel to the two ends of the energy storage capacitor group. The positive pole of the permanent magnetic coil of the ring network cabinet circuit breaker is connected to the moving end of the first single-pole double-throw switch, and the negative pole is connected to the moving end of the second single-pole double-throw switch.

[0008] The input end of the hand-cranked generator charging module is detachably electrically connected to the hand-cranked generator, and the output end is connected to the energy storage capacitor group.

[0009] Furthermore, the energy storage capacitor group includes a first energy storage capacitor and a second energy storage capacitor connected in parallel with each other, the positive terminals of the hand-cranked generator charging module and the DC / DC power supply module are connected in parallel with each other, and a first selection switch is connected in series between the positive terminals of the first energy storage capacitor and the second energy storage capacitor, and a second selection switch is connected in series between the first single-pole double-throw switch, the second single-pole double-throw switch and the positive terminals of the first energy storage capacitor and the second energy storage capacitor.

[0010] Furthermore, the negative poles of the output ends of the hand-cranked generator charging module and the DC / DC power supply module are respectively provided with three output interfaces of 120V, 160V and 220V. The three output interfaces of the hand-cranked generator charging module are connected to the negative pole of the energy storage capacitor group through the third selection switch, and the three output interfaces of the DC / DC power supply module are connected to the negative pole of the energy storage capacitor group through the fourth selection switch.

[0011] Furthermore, a voltmeter is connected to both ends of the energy storage capacitor group.

[0012] Furthermore, an operating capacitor fuse is connected in series between the positive terminal of the energy storage capacitor group and the first single-pole double-throw switch and the second single-pole double-throw switch.

[0013] Furthermore, the hand-cranked generator charging module includes a rectifier, resistors R1, R2, R3, R4, R6, R7, R8, R9, R10, R11, R12, R13, a capacitor C5, a MOS tube Q1, a transistor V3, a comparison strong U1, a comparator U2, and a light-emitting diode LED1, and the light-emitting diode LED1 serves as an energy storage indicator light;

[0014] The input end of the rectifier is used to connect to the hand-cranked generator, the positive pole of the output end of the rectifier is connected to one end of the resistor R1, the other end of the resistor R1 is connected in series with the resistor R2 and then connected to the c pole of the transistor V3, the e pole of the transistor V3 is grounded, the g pole and the d pole of the MOS tube Q1 are connected in parallel to the two ends of the resistor R1, the s pole of the MOS tube Q1 is connected to one end of the resistor R9 and serves as the positive pole of the voltage output, the other end of the resistor R9 is connected in series with the resistors R10, R11, R12, and R13 in sequence, the other end of the resistor R13 is grounded and serves as the negative pole of the 110V voltage output, the connection point between the resistors R12 and R13 is grounded and serves as the negative pole of the 160V voltage output, and the connection point between the resistors R11 and R12 is grounded and serves as the negative pole of the 220V voltage output;

[0015] The b-pole of the transistor V3 is connected to one end of the resistor R4, the other end of the resistor R4 is respectively connected to one end of the resistor R3 and the output end of the comparator U1, the other end of the resistor R3 is connected to the positive electrode of the power supply module, the positive end of the capacitor C5 is connected to the positive electrode of the power supply module, and the negative end is grounded, and the power supply end of the comparator U1 is connected to the power supply module; the same-direction input end of the comparator U1 is connected to one end of the resistor R8 and the same-direction input end of the comparator U2, the other end of the resistor R8 is grounded, the reverse input end of the comparator U1 is respectively connected to one end of the resistors R5 and R6, the other end of the resistor R5 is connected to the positive electrode of the power supply module via the light-emitting diode LED1, the other end of the resistor R6 is respectively connected to the same-direction input end of the comparator U2 and one end of the resistor R7, the other end of the resistor R7 is connected to the positive electrode of the power supply module, the reverse input end of the comparator U2 is connected to the junction between R10 and R11, and the output end of the comparator U2 is connected to the reverse input end of the comparator U1.

[0016] Furthermore, the drive detection module 3 includes a detection switch JCK, resistors R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, an operational amplifier U3, an operational amplifier U4, a voltage regulator diode V1, a transistor V2, a capacitor C3, a light-emitting diode LED3, and a light-emitting diode LED2, wherein the light-emitting diode LED2 is a detection running light, and the light-emitting diode LED3 is a detection fault display light.

[0017] The input end of the detection switch JCK is used to connect the permanent magnet coil, the positive pole of the output end of the detection switch JCK is respectively connected to one end of the resistor R17 and the c pole of the transistor V2, the e pole of the transistor V2 is connected to one end of the resistor R16, the other end of the resistor R16 is connected to the positive pole of the light emitting diode LED2, the negative pole of the light emitting diode LED2 is grounded via the resistor R15, and the b pole of the transistor V2 is connected to the negative pole of the light emitting diode LED2;

[0018] The other end of the resistor R17 is connected to the same-direction input end of the operational amplifier U3, the reverse input end of the operational amplifier U3 is connected to one end of the resistors R18 and R19 respectively, the other end of the resistor R18 is grounded, and the other end of the resistor R19 is connected to the output end of the operational amplifier U3 and one end of the resistor R24;

[0019] The same-direction input end of the operational amplifier U4 is connected to the other end of the resistor R24, the reverse input end of the operational amplifier U4 is respectively connected to one end of the resistor R21 and the resistor R22, the other end of the resistor R22 is grounded, the other end of the resistor R21 is respectively connected to one end of the resistor R20 and the negative electrode of the voltage-stabilizing diode V1, the positive electrode of the voltage-stabilizing diode V1 is grounded, the other end of the resistor R20 is respectively connected to the positive electrode of the light-emitting diode LED2 and the positive electrode of the power supply module, the power supply end of the operational amplifier U4 is connected to the power supply module, the output end of the operational amplifier U4 is connected to one end of the resistor R23, the other end of the resistor R23 is respectively connected to the positive electrode of the power supply module and one end of the capacitor C3 via the light-emitting diode LED3, and the other end of the capacitor C3 is grounded.

[0020] Furthermore, the emergency operation power supply also includes a power box, on which a control panel that can be turned on and off is provided, and a DC / DC power module, a power supply module, an energy storage capacitor group, a hand-cranked generator charging module, and a drive detection module are installed in the power box;

[0021] The voltmeter, the operating capacitor fuse, the first single-pole double-throw switch, the second single-pole double-throw switch, the first selection switch, the second selection switch, the third selection switch, the fourth selection switch, and the detection switch JCK are all installed on the operation panel, and the light-emitting diode LED3, the light-emitting diode LED2, and the light-emitting diode LED1 are all arranged on the control panel. The control panel is also provided with a permanent magnet coil access terminal connected to the input end of the detection switch JCK, a hand-cranked generator input terminal connected to the input end of the hand-cranked generator charging module, and a DC power input terminal connected to the input end of the DC / DC power supply module.

[0022] Beneficial effects of the present invention:

[0023] 1) The present invention can detect the permanent magnet guide drive of the intelligent ring main unit circuit breaker control unit on site, thereby protecting the emergency operation power supply; and can generate different operating voltage values ​​to close or open the corresponding permanent magnet vacuum switch of the intelligent ring main unit circuit breaker.

[0024] 2) In special circumstances on site, such as when the portable intelligent ring main unit circuit breaker multifunctional emergency operation power supply box or handheld hand-cranked generator fails, you can switch to connecting it to the car battery with a cigarette lighter or battery alligator clip to charge the energy storage capacitor in the portable multifunctional emergency power supply box. After it is fully charged, the permanent magnet vacuum switch can be closed or opened.

[0025] 3) The present invention adopts an aluminum-plastic suitcase, which is beautiful, light and easy to carry.

[0026] 4) The drive detection module of the present invention can detect whether the IGBT tube of the IGBT drive module is broken down. If the IGBT tube is broken down, the permanent magnet coil will be short-circuited when the permanent magnet mechanism is opened and closed, causing damage to the emergency operation power supply box components. By detecting the IGBT drive module, the reliability and safety of the operating power supply can be effectively improved.

[0027] 5) In order to adapt to different operating voltages and ensure reliable operation of the circuit breaker, the present invention is provided with two energy storage capacitors with different voltage levels and capacities, wherein the specification of the energy storage capacitor C1 is 47000uF / 160V, and the specification of the energy storage capacitor C2 is 22000uF / 250V. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the principle diagram of the present invention;

[0029] Figure 2 The circuit diagram of the drive detection module;

[0030] Figure 3 Circuit diagram for charging module of hand-cranked generator;

[0031] Figure 4 A top view of the operation panel. DETAILED DESCRIPTION

[0032] like Figure 1-3As shown, the present invention includes a DC / DC power supply module 1, a hand-cranked generator charging module 2, a hand-cranked generator 4, a drive detection module 3, an energy storage capacitor C1, an energy storage capacitor C2, a two-position selection switch K21, a two-position selection switch K22, a three-position selection switch K11, a voltmeter XS, a three-position selection switch K12, a first single-pole double-throw switch HK, a second single-pole double-throw switch FK, and a 5V power supply module 5 for supplying power to the drive detection module 3 and the hand-cranked generator charging module. The input end of the DC / DC power supply module 1 is used to connect a DC input power supply, and the negative pole of the output end of the DC / DC power supply module 1 is respectively provided with three output interfaces of 120V, 160V and 220V. The 160V output interface of the DC / DC power supply module 1 is connected to pin 1 of the three-position selection switch K11, the 120V output interface is connected to pin 0 of the three-position selection switch K11, the 220V output interface is connected to pin 3 of the three-position selection switch K11, and the 2nd pin of the three-position selection switch K11 is connected to the The negative terminals of the energy storage capacitors C1 and C2; the positive terminal of the DC / DC power supply module 1 is connected to the 2nd pin of the two-position selection switch K21, the 1st pin of the two-position selection switch K21 is respectively connected to the positive terminal of the energy storage capacitor C2 and the 1st pin of the two-position selection switch K22, the 3rd pin of the two-position selection switch K21 is respectively connected to the positive terminal of the energy storage capacitor C1 and the 3rd pin of the two-position selection switch K22, the negative terminals of the energy storage capacitors C1 and C2 are connected to the 2nd pin of the three-position selection switch K11, the 2nd pin of the two-position selection switch K22 is connected in series with the operating capacitor fuse F and then connected to one end of the voltmeter XS, the other end of the voltmeter XS is connected to the negative terminal of the energy storage capacitor C2, the two fixed terminals of the first single-pole double-throw switch HK and the second single-pole double-throw switch FK are respectively connected in parallel to the two ends of the voltmeter XS, the positive terminal of the circuit breaker permanent magnetic coil 6 is connected to the moving end of the first single-pole double-throw switch FK, and the negative terminal is connected to the moving end of the second single-pole double-throw switch FK, and the circuit breaker permanent magnetic coil 6 is simultaneously connected to the IGBT drive module 7.

[0033] The input end of the hand-cranked generator charging module 2 is detachably electrically connected to the hand-cranked generator 4, the positive pole of the output end of the hand-cranked generator charging module 2 is connected to the 2nd pin of the two-position selection switch K21, and the negative pole of the hand-cranked generator charging module 2 is respectively provided with three output interfaces of 120V, 160V and 220V. The 160V output interface of the hand-cranked generator charging module 2 is connected to the 1st pin of the three-position selection switch K12, the 120V output interface is connected to the 0th pin of the three-position selection switch K12, the 220V output interface is connected to the 3rd pin of the three-position selection switch K12, and the 2nd pin of the three-position selection switch K12 is connected to the 2nd pin of the three-position selection switch K11.

[0034] The hand-cranked generator charging module 2 includes a rectifier UR, resistors R1, R2, R3, R4, R6, R7, R8, R9, R10, R11, R12, R13, a capacitor C5, a MOS tube Q1, a transistor V3, a comparator U1, a comparator U2, and a light-emitting diode LED1, and the light-emitting diode LED1 serves as an energy storage indicator light.

[0035] The input end of the rectifier UR is used to connect the hand-cranked generator 4, the positive pole of the output end of the rectifier UR is connected to one end of the resistor R1, the other end of the resistor R1 is connected in series with the resistor R2 and then connected to the c pole of the transistor V3, the e pole of the transistor V3 is grounded, the g pole and the d pole of the MOS tube are connected in parallel to the two ends of the resistor R1, the s pole of the MOS tube is connected to one end of the resistor R9 and serves as the voltage output positive pole Vout+, the other end of the resistor R9 is connected in series with the resistors R10, R11, R12, and R13 in sequence, the other end of the resistor R13 is grounded and serves as the 110V voltage output negative pole Vout-(110V), the connection point between the resistors R12 and R13 is grounded and serves as the 160V voltage output negative pole Vout-(160V), the connection point between the resistors R11 and R12 is grounded and serves as the 220V voltage output negative pole Vout-(220V);

[0036] The b-pole of the transistor V3 is connected to one end of the resistor R4, the other end of the resistor R4 is respectively connected to one end of the resistor R3 and the output end of the comparator U1, the other end of the resistor R3 is connected to the positive electrode of the power supply module 5, the positive end of the capacitor C5 is connected to the positive electrode of the power supply module 5, and the negative end is grounded, and the power supply end of the comparator U1 is connected to the power supply module 5; the same-direction input end of the comparator U1 is connected to one end of the resistor R8 and the same-direction input end of the comparator U2, the other end of the resistor R8 is grounded, the reverse input end of the comparator U1 is respectively connected to one end of the resistors R5 and R6, the other end of the resistor R5 is connected to the positive electrode of the power supply module via the light-emitting diode LED1, the other end of the resistor R6 is respectively connected to the same-direction input end of the comparator U2 and one end of the resistor R7, the other end of the resistor R7 is connected to the positive electrode of the power supply module 5, the reverse input end of the comparator U2 is connected to the junction between R10 and R11, and the output end of the comparator U2 is connected to the reverse input end of the comparator U1.

[0037] The drive detection module 3 includes a detection switch JCK, resistors R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, an operational amplifier U3, an operational amplifier U4, a voltage regulator diode V1, a transistor V2, a capacitor C3, a light-emitting diode LED3, and a light-emitting diode LED2. The light-emitting diode LED2 is a detection running light, and the light-emitting diode LED3 is a detection fault display light.

[0038] The input end of the detection switch JCK is used for the detachable electrically connected permanent magnet coil. The positive pole of the output end of the detection switch JCK is respectively connected to one end of the resistor R17 and the c pole of the transistor V2. The e pole of the transistor V2 is connected to one end of the resistor R16. The other end of the resistor R16 is connected to the positive pole of the light-emitting diode LED2. The negative pole of the light-emitting diode LED2 is grounded via the resistor R15. The b pole of the transistor V2 is connected to the negative pole of the light-emitting diode LED2.

[0039] The other end of resistor R17 is connected to the same-direction input end of operational amplifier U3, the reverse input end of operational amplifier U3 is respectively connected to one end of resistors R18 and R19, the other end of resistor R18 is grounded, and the other end of resistor R19 is connected to the output end of operational amplifier U3 and one end of resistor R24.

[0040] The same-direction input terminal of the operational amplifier U4 is connected to the other end of the resistor R24, the reverse input terminal of the operational amplifier U4 is respectively connected to one end of the resistor R21 and the resistor R22, the other end of the resistor R22 is grounded, the other end of the resistor R21 is respectively connected to one end of the resistor R20 and the negative electrode of the voltage-stabilizing diode V1, the positive electrode of the voltage-stabilizing diode V1 is grounded, the other end of the resistor R20 is respectively connected to the positive electrode of the light-emitting diode LED2 and the positive electrode of the 5V power supply module 5, the power supply terminal of the operational amplifier U4 is connected to the 5V power supply module 5, the output terminal of the operational amplifier U4 is connected to one end of the resistor R23, the other end of the resistor R23 is respectively connected to the positive electrode of the 5V power supply module 5 and one end of the capacitor C3 via the light-emitting diode LED3, and the other end of the capacitor C3 is grounded.

[0041] like Figure 4 As shown, as a further explanation of this embodiment, the emergency operation power supply also includes a power box, which is provided with a control panel 8 that can be turned on and off, a 5V power module 5, an energy storage capacitor C1, an energy storage capacitor C2, a hand-cranked generator charging module 2, and a drive detection module 3 installed in the power box.

[0042] The voltmeter XS, the operating capacitor fuse F, the first single-pole double-throw switch HK, the second single-pole double-throw switch FK, the two-position selection switch K21, the two-position selection switch K22, the three-position selection switch K11, the three-position selection switch K12, and the detection switch JCK are all installed on the operation panel 8, and the light-emitting diode LED3, the light-emitting diode LED2, and the light-emitting diode LED1 are all arranged on the operation panel 8. The operation control panel 8 is also provided with permanent magnet coil access terminals L+ and L- connected to the input end of the detection switch JCK, hand-cranked generator input terminals SY-ACN and SY-ACL connected to the input end of the hand-cranked generator charging module 3, and DC power input terminals 12+ and 12- connected to the input end of the DC / DC power supply module 1.

[0043] As a further illustration of this embodiment, the two-position selector switch K21, the two-position selector switch K22, the three-position selector switch K11, and the three-position selector switch K12 can be replaced by a universal rotary switch SA. The universal rotary switch SA is a known technology, and its specific connection relationship is not described in detail.

[0044] The working principle of the hand-cranked generator charging module 2 in this embodiment is as follows: when the output end of the hand-cranked generator 1 is connected to the hand-cranked power input ends SY-CAN and SY-ACL of the emergency power supply box, the generator 1 is shaken at a constant speed to generate alternating current, which is rectified by the rectifier UR and becomes direct current. Since the transistor V3 is not turned on at the beginning of the work, the c pole of the transistor V3 is at a high potential through the resistor R1, the MOS tube Q1 is turned on, Vout+ has a voltage output, and the energy storage capacitor C1 or C2 is charged. When the selected voltage value is 110V, the resistors R9, R10, R11, R12, and R13 divide the value obtained by dividing the voltage of Vout+, which is connected to the reverse input end of the comparator U2, and then connected in parallel with the resistors R7 and R6 at the same-direction input end of the comparator U2 and connected in series with R8 to divide the 5V voltage output by the 5V power supply module 5 to obtain a reference voltage value for comparison.

[0045] When the energy storage capacitor voltage Vout+ reaches the set voltage value, the voltage at the reverse input terminal of the comparator U2 is greater than the voltage at the same direction input terminal, and the output of the comparator U2 is low level, and the energy storage light emitting diode LED1 is turned on and emits red light. At this time, the reference voltage becomes the voltage obtained by dividing the 5V voltage output by the 5V power supply module 5 after the resistors R6 and R8 are connected in parallel and in series with R7. At this time, the reverse input terminal of the comparator U1 is low level, and the same direction input terminal is the reference voltage obtained by dividing the 5V voltage output by the 5V power supply module 5 after the resistors R6 and R8 are connected in parallel and in series with R7, which is high level. The voltage at the same direction input terminal of the comparator U1 is greater than the reverse input terminal, and the output of the comparator U1 is high level, so that the c and e of the transistor V3 are turned on, and the MOS tube Q1 is turned off, so that the energy storage capacitor C1 or C2 is not charged. When the voltage of the energy storage capacitor C1 or C2 drops to a certain value, the divided voltage obtained by the resistors R9, R10, R11, R12, and R13 is lower than the new reference voltage, and the output of the comparator U2 is high, the energy storage light-emitting diode LED1 goes out, the output of the comparator U1 is low, the c and e of the transistor V3 are not conducting, and the MOS tube Q1 is conducting, and the energy storage capacitor C1 or C2 continues to be charged.

[0046] The resistor R6 in the hand-crank generator charging module 3 controls the voltage drop value. When the charging voltage is lower than the lower limit of the drop value, the MOS tube Q1 is turned on to charge the energy storage capacitor C1 or C2; when the charging voltage is higher than the upper limit of the drop value, the MOS tube Q1 is turned off to stop charging the energy storage capacitor C1 or C2.

[0047] Similarly, if the selected voltage value is 160V, the resistor R13 is short-circuited, that is, the end of the resistor R12 and R13 is connected to Vout-, then the voltage division value is obtained by the resistors R9, R10, R11, and R12, and then compared with the reference voltage; if the selected voltage value is 220V, the resistors R12 and R13 are short-circuited, that is, the end of the resistor R12 and R11 is connected to Vout-, then the voltage division value is obtained by the resistors R9, R10, and R11, and then compared with the reference voltage.

[0048] Before the intelligent ring main unit circuit breaker of the permanent magnet mechanism is opened and closed, the permanent magnet drive part of the control unit needs to be preliminarily inspected to check whether the drive part is damaged. The permanent magnet coil access terminals L+ and L on the operation control panel 8 are electrically connected to the permanent magnet coil L+ and L- ends with two wires. When the energy storage capacitor is fully charged, the control detection switch JCK is turned on, and the permanent magnet drive part is preliminarily inspected through the drive detection module 3. If there is a fault, the IGBT tube of the IGBT drive module 7 is short-circuited, and one side of the L+ and L- of the permanent magnet coil is short-circuited to the negative pole. The measured resistance value is about 0 ohms, and the same-direction input end of the operational amplifier U3 is about 0V. After being amplified several times by R18 and R19, compared with the reference voltage of the reverse input of the operational amplifier U4, the resistors R20, R21, R22, and the voltage regulator tube V1 divide the 5V voltage output by the 5V power supply module 5 to obtain the reference voltage value. The output of the operational amplifier U4 is low level, and the light-emitting diode LED3 lights up. If there is no fault, the IGBT tube of the IGBT drive module 7 has no short circuit phenomenon, the resistance detected between L+ and L- of the permanent magnetic coil is about 2 ohms, and the resistors R16, R15, the light-emitting diode LED2, and the transistor V2 form a constant current source. The current passes through the resistance between L+ and L- to generate a voltage value, which is amplified several times by the operational amplifier U3 and connected to the same-direction input terminal of the operational amplifier U4. Then, it is compared with the reference voltage of the reverse input terminal of the operational amplifier U4. If the voltage value of the same-direction input terminal is greater than the voltage value of the reverse input terminal, the output terminal of the operational amplifier U4 is high level, and the light-emitting diode LED3 is not on. This operation is performed to detect whether the IGBT tube of the permanent magnetic coil is broken down. If the IGBT tube is broken down, the permanent magnetic coil is short-circuited when the permanent magnetic mechanism is separated and combined, resulting in damage to the components of the emergency operation power supply box. The reliability and safety of the operation power supply can be improved by checking the drive detection module 3.

[0049] The working principle of the present invention is specifically described below by taking a 120V opening and closing coil as an example:

[0050] 1) When a DC power supply is used, the output end of the DC power supply is connected to the input end of the DC / DC power supply module 1, and the 0 and 2 pins of the three-position selector switch K11 are controlled to be turned on, the 2 and 3 pins of the two-position selector switch K21 are turned on, and the 3 and 2 pins of the two-position selector switch K22 are turned on, and the energy storage capacitor C1 is charged. The energy storage voltage value is displayed by the voltmeter XS. After full charge, the opening and closing coils are opened and closed through the first single-pole double-throw switch HK and the second single-pole double-throw switch FK.

[0051] 2) When a hand-held hand-crank generator 4 is used for power supply, the output end of the hand-held hand-crank generator 4 is connected to the input end of the hand-crank generator charging module 2, and the 0 and 2 pins of the three-position selection switch K11 are controlled to be turned on, the 2 and 3 pins of the two-position selection switch K21 are turned on, and the 3 and 2 pins of the two-position selection switch K22 are turned on. The 0V-AC220V voltage output by the hand-crank generator 4 is rectified into the required DC operating voltage value through the hand-crank generator charging module 2, and the energy storage capacitor C1 is charged. After being fully charged, the opening and closing coils are opened and closed through the first single-pole double-throw switch HK and the second single-pole double-throw switch FK.

[0052] When the opening and closing coil is 160V and powered by a DC power supply, pins 1 and 2 of the three-position selector switch K11 are turned on, pins 2 and 1 of the two-position selector switch K21 are turned on, and pins 1 and 2 of the two-position selector switch K22 are turned on.

[0053] When the opening and closing coil is 220V and powered by a DC power supply, pins 3 and 2 of the three-position selector switch K11 are turned on, pins 2 and 1 of the two-position selector switch K21 are turned on, and pins 1 and 2 of the two-position selector switch K22 are turned on.

[0054] When the closing and opening coil is 160V and the handheld hand-cranked generator 4 is used for power supply, the 1st and 2nd pins of the three-position selector switch K12 are turned on, the 2nd and 1st pins of the two-position selector switch K21 are turned on, and the 1st and 2nd pins of the two-position selector switch K22 are turned on.

[0055] When the closing and opening coil is 220V and powered by a hand-held hand-cranked generator 4, pins 3 and 2 of the three-position selector switch K12 are turned on, pins 2 and 1 of the two-position selector switch K21 are turned on, and pins 1 and 2 of the two-position selector switch K22 are turned on.

[0056] It should be further explained that when the hand-crank generator fails to work properly, if you go back to get or wait for a new hand-crank generator to be delivered, it will delay the inspection and maintenance time, greatly increasing the time cost. Because on-site maintenance is basically carried out by driving an engineering vehicle to the site for inspection and maintenance, at this time, the alligator clip wire or cigarette lighter in the emergency operation power box can be directly connected to the car's cigarette lighter or car battery, and the car battery can be used as a DC power supply to charge the energy storage capacitor in the emergency operation power box.

Claims

1. A portable intelligent ring main unit circuit breaker multifunctional emergency operation power supply, used for emergency control of ring main unit circuit breaker, characterized by: It includes a DC / DC power supply module, a first single-pole double-throw switch, a second single-pole double-throw switch, a hand-cranked generator, a hand-cranked generator charging module, a drive detection module, and a power supply module for supplying power to the drive detection module and the hand-cranked generator charging module; The drive detection module is detachably electrically connected to the permanent magnetic coil of the ring main unit circuit breaker, and is used to detect the IGBT drive module of the ring main unit circuit breaker; The input end of the DC / DC power supply module is used to connect to a DC power supply, and the output end is connected to an energy storage capacitor group. The two fixed ends of the first single-pole double-throw switch and the second single-pole double-throw switch are respectively connected in parallel to the two ends of the energy storage capacitor group. The positive pole of the permanent magnetic coil of the ring network cabinet circuit breaker is connected to the moving end of the first single-pole double-throw switch, and the negative pole is connected to the moving end of the second single-pole double-throw switch. The input end of the hand-cranked generator charging module is detachably electrically connected to the hand-cranked generator, and the output end is connected to the energy storage capacitor group; The drive detection module includes a detection switch JCK, resistors R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, an operational amplifier U3, an operational amplifier U4, a voltage-stabilizing diode V1, a transistor V2, a capacitor C3, a light-emitting diode LED3, and a light-emitting diode LED2. The light-emitting diode LED2 is a detection running light, and the light-emitting diode LED3 is a detection fault display light. The input end of the detection switch JCK is used to connect the permanent magnet coil, the positive pole of the output end of the detection switch JCK is respectively connected to one end of the resistor R17 and the c pole of the transistor V2, the e pole of the transistor V2 is connected to one end of the resistor R16, the other end of the resistor R16 is connected to the positive pole of the light emitting diode LED2, the negative pole of the light emitting diode LED2 is grounded via the resistor R15, and the b pole of the transistor V2 is connected to the negative pole of the light emitting diode LED2; The other end of the resistor R17 is connected to the same-direction input end of the operational amplifier U3, the reverse input end of the operational amplifier U3 is connected to one end of the resistors R18 and R19 respectively, the other end of the resistor R18 is grounded, and the other end of the resistor R19 is connected to the output end of the operational amplifier U3 and one end of the resistor R24; The same-direction input end of the operational amplifier U4 is connected to the other end of the resistor R24, the reverse input end of the operational amplifier U4 is respectively connected to one end of the resistor R21 and the resistor R22, the other end of the resistor R22 is grounded, the other end of the resistor R21 is respectively connected to one end of the resistor R20 and the negative electrode of the voltage-stabilizing diode V1, the positive electrode of the voltage-stabilizing diode V1 is grounded, the other end of the resistor R20 is respectively connected to the positive electrode of the light-emitting diode LED2 and the positive electrode of the power supply module, the power supply end of the operational amplifier U4 is connected to the power supply module, the output end of the operational amplifier U4 is connected to one end of the resistor R23, the other end of the resistor R23 is respectively connected to the positive electrode of the power supply module and one end of the capacitor C3 via the light-emitting diode LED3, and the other end of the capacitor C3 is grounded; The emergency operation power supply also includes a power box, on which a control panel that can be turned on and off is provided, and a DC / DC power module, a power supply module, an energy storage capacitor group, a hand-cranked generator charging module, and a drive detection module are installed in the power box; The voltmeter, the operating capacitor fuse, the first single-pole double-throw switch, the second single-pole double-throw switch, the first selection switch, the second selection switch, the third selection switch, the fourth selection switch, and the detection switch JCK are all installed on the operation panel, and the light-emitting diode LED3, the light-emitting diode LED2, and the light-emitting diode LED1 are all arranged on the control panel. The control panel is also provided with a permanent magnet coil access terminal connected to the input end of the detection switch JCK, a hand-cranked generator input terminal connected to the input end of the hand-cranked generator charging module, and a DC power input terminal connected to the input end of the DC / DC power supply module.

2. A portable intelligent ring main unit circuit breaker multifunctional emergency operation power supply according to claim 1, characterized in that: The energy storage capacitor group includes a first energy storage capacitor and a second energy storage capacitor connected in parallel with each other. The positive terminals of the hand-cranked generator charging module and the DC / DC power supply module are connected in parallel with each other and a first selection switch is connected in series between the positive terminals of the first energy storage capacitor and the second energy storage capacitor. A second selection switch is connected in series between the first single-pole double-throw switch, the second single-pole double-throw switch and the positive terminals of the first energy storage capacitor and the second energy storage capacitor.

3. A portable intelligent ring main unit circuit breaker multifunctional emergency operation power supply according to claim 2, characterized in that: The negative poles of the output ends of the hand-cranked generator charging module and the DC / DC power supply module are respectively provided with three output interfaces of 120V, 160V and 220V. The three output interfaces of the hand-cranked generator charging module are connected to the negative pole of the energy storage capacitor group through the third selection switch, and the three output interfaces of the DC / DC power supply module are connected to the negative pole of the energy storage capacitor group through the fourth selection switch.

4. A portable intelligent ring main unit circuit breaker multifunctional emergency operation power supply according to claim 3, characterized in that: A voltmeter is connected to both ends of the energy storage capacitor bank.

5. A portable intelligent ring main unit circuit breaker multifunctional emergency operation power supply according to claim 4, characterized in that: An operating capacitor fuse is connected in series between the positive terminal of the energy storage capacitor group and the first single-pole double-throw switch and the second single-pole double-throw switch.

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