CN211045303U - Intelligent controller suitable for 220V and 380V permanent magnet mechanism - Google Patents
Intelligent controller suitable for 220V and 380V permanent magnet mechanism Download PDFInfo
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- CN211045303U CN211045303U CN201922364573.3U CN201922364573U CN211045303U CN 211045303 U CN211045303 U CN 211045303U CN 201922364573 U CN201922364573 U CN 201922364573U CN 211045303 U CN211045303 U CN 211045303U
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Abstract
The utility model discloses an intelligent controller suitable for 220V and 380V permanent magnetism mechanism, include: the device comprises a CPU, a switching-on command input circuit, an enabling circuit, a discharging circuit and a switching-on control circuit; the switching-on command input circuit and the enabling circuit are respectively connected with the input end of the CPU; the discharging circuit and the closing control circuit are respectively connected with the output end of the CPU; the CPU judges whether to discharge according to the rated voltage of the coil of the permanent magnetic mechanism and discharges through a discharge circuit; the enabling circuit judges whether to carry out closing according to the voltage of the energy storage capacitor, and sends a closing command to the CPU through the closing command input circuit, and the CPU controls the closing control circuit to carry out closing operation. The utility model provides an intelligent controller suitable for 220V and 380V permanent magnetic mechanisms, which solves the problem that the mechanism is burnt out because field personnel do not discharge energy storage capacitors; the complicated operation that field personnel need to manually discharge is solved; high safety and low cost.
Description
Technical Field
The utility model relates to an electric power tech field, more specifically the intelligent controller who relates to a be applicable to 220V and 380V permanent magnetism mechanism that says so.
Background
With the improvement of the science and technology degree of society, the requirements of the power industry and the wide range of terminal users on the performance of the switch equipment are higher and higher. At present, 6-35KV series permanent magnet mechanism vacuum circuit breakers are widely used as medium-voltage circuit breakers in developed countries, and have the characteristics of high reliability, simple structure, safety, long service life and the like.
However, the existing permanent magnet controller has low reliability and the following defects:
1: the safety is low: when two permanent magnet mechanisms with different voltage levels (220V and 380V) are operated, if discharge treatment is not carried out, the mechanism is easy to burn out;
2: the cost is high: two power supply modules (DC24V to DC220V, DC24V to DC380V) need to be arranged;
3: the operation is complex: when the rated voltage of the permanent magnet mechanism coil is DC220V, if the voltage of the energy storage capacitor is not less than Umax (the maximum withstand voltage of the mechanism coil), the case needs to be disassembled, and the capacitor needs to be discharged manually.
Therefore, the problem to be solved by those skilled in the art is how to provide an intelligent controller suitable for 220V and 380V permanent magnet mechanisms, which is high in safety, low in cost, and easy to operate.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides an intelligent controller suitable for 220V and 380V permanent magnetic mechanism, solved because the field personnel do not discharge the problem that the mechanism burns out to energy storage capacitor; the complicated operation that field personnel need to manually discharge is solved; high safety and low cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an intelligent controller suitable for 220V and 380V permanent magnet mechanisms, comprising: the device comprises a CPU, a switching-on command input circuit, an enabling circuit, a discharging circuit and a switching-on control circuit; the switching-on command input circuit and the enabling circuit are respectively connected with the input end of the CPU; the discharging circuit and the closing control circuit are respectively connected with the output end of the CPU;
the CPU judges whether to discharge or not according to the rated voltage of the coil of the permanent magnetic mechanism, and discharges through the discharge circuit; the enabling circuit judges whether to carry out switching-on according to the voltage of the energy storage capacitor, and sends a switching-on command to the CPU through the switching-on command input circuit, and the CPU controls the switching-on control circuit to carry out switching-on operation.
Preferably, in the above intelligent controller adapted for 220V and 380V permanent magnet mechanisms, the closing command input circuit includes: the circuit breaker comprises a closing button, a first resistor, a second resistor and a first optocoupler; the switching-on button controls a +15V power supply to be connected with the second resistor, and the +15V power supply is connected with the pin A of the first optocoupler through the second resistor; the pin C of the first optocoupler is connected with the CPU and is connected with a +3.3V power supply through the first resistor; the pin E of the first optocoupler is grounded; the K pin of the first optical coupler is connected with 15 VGND.
Preferably, in the above intelligent controller for 220V and 380V permanent magnet mechanisms, the enabling circuit comprises: the circuit comprises a change-over switch, a third resistor, a second optocoupler, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a tenth capacitor, a third optocoupler and an OR gate; the change-over switch is connected with a pin A of the second optocoupler through the third resistor; a pin C of the second optocoupler is connected with the CPU and is connected with one end of the OR gate; the pin E of the second optocoupler is grounded; the K pin of the second optical coupler is connected with 15 VGND; the pin A of the third optocoupler is connected with the fifth resistor and a +15V power supply; a pin K of the third optocoupler is connected with one end of the tenth capacitor and a pin K of the voltage reference chip respectively; the other end of the tenth capacitor is connected with the eighth resistor, the sixth resistor and CO +; the sixth resistor is connected with the R pin of the voltage reference chip; the seventh resistor is connected between the pin A and the pin R of the voltage reference chip U2 and is grounded; the pin C of the third optocoupler is connected with the other end of the OR gate; and the pin E of the third optocoupler is grounded.
Preferably, in the above intelligent controller for 220V and 380V permanent magnet mechanisms, the discharge circuit includes: the fourth optocoupler, the ninth resistor, the triode, the thirteenth resistor and the relay; the +3.3V power supply is connected with the pin A of the fourth optocoupler through the ninth resistor; the output end of the CPU is connected with a K pin of the fourth optocoupler; the pin C of the fourth optocoupler is connected with a +24V power supply; the pin E of the fourth optocoupler is connected with the triode; and the triode controls the relay to pull in and discharge through a thirteenth resistor.
Preferably, in the above intelligent controller suitable for 220V and 380V permanent magnet mechanisms, one end of the coil of the relay is connected to the C pole of the triode, and the other end is connected to a +24V power supply; and a movable contact in a group of normally open contacts of the relay is connected with CO +, and a static contact is connected with a thirteenth resistor.
Preferably, in the above intelligent controller adapted to 220V and 380V permanent magnet mechanisms, the closing control circuit includes: a fifth optocoupler, a tenth resistor, a ninth capacitor, an IGBT and a permanent magnet mechanism; the pin A of the fifth optocoupler is connected with the tenth resistor and is connected with a +3.3V power supply in parallel; the pin C of the fifth optocoupler is connected with the output end of the CPU; a VCC pin of the fifth optocoupler is connected with a +15V power supply and is connected with one end of the ninth capacitor, and the other end of the ninth capacitor is connected with 15 VGND; the VO pin of the fifth optocoupler controls the closing action of the permanent magnet mechanism through the IGBT; and the GND pin of the fifth optocoupler is grounded.
Preferably, in the above intelligent controller suitable for 220V and 380V permanent magnet mechanisms, a twelfth resistor and a diode are arranged between the VO pin of the fifth optocoupler and the IGBT, and the diode is connected in parallel with the twelfth resistor; and the cathode of the diode is connected with the fifth optocoupler, and the anode of the diode is connected with the IGBT.
Preferably, in the above intelligent controller suitable for 220V and 380V permanent magnet mechanisms, a voltage dependent resistor is arranged between the C pole and the E pole of the IGBT.
Preferably, in the above intelligent controller suitable for 220V and 380V permanent magnet mechanisms, a freewheeling diode is arranged between the C pole and the E pole of the IGBT.
According to the technical scheme, compared with the prior art, the utility model discloses an intelligent controller suitable for 220V and 380V permanent magnetic mechanisms, which solves the problem that the mechanism is burnt out because field personnel do not discharge the energy storage capacitor; the complicated operation that field personnel need to manually discharge is solved; high safety and low cost. The utility model discloses a power module need output 220VDC or 380VDC voltage to can select output voltage through outside dry contact, CPU need discern permanent magnetic mechanism coil rated voltage grade; with 230V as a critical point, the voltage of the energy storage capacitor needs to be detected; the discharge resistor is an aluminum shell resistor with high power and the insulation strength of more than 2500 VAC.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model discloses an intelligent controller suitable for 220V and 380V permanent magnetic mechanisms, which solves the problem that the mechanism is burnt out because field personnel do not discharge energy storage capacitors; the complicated operation that field personnel need to manually discharge is solved; high safety and low cost.
An intelligent controller suitable for a 220V permanent magnet mechanism L and a 380V permanent magnet mechanism L comprises a CPU5, a closing command input circuit 3, an enabling circuit 1, a discharging circuit 2 and a closing control circuit 4, wherein the closing command input circuit 3 and the enabling circuit 1 are respectively connected with the input end of the CPU 5;
the CPU5 judges whether to discharge according to the rated voltage of the coil of the permanent magnet mechanism L1 and discharge through the discharge circuit 2, the enabling circuit 1 judges whether to close according to the voltage of the energy storage capacitor and sends a closing command to the CPU5 through the closing command input circuit 3, and the CPU5 controls the closing control circuit 4 to close.
In order to further optimize the above technical solution, the closing command input circuit 3 includes: the circuit breaker comprises a closing button S1, a first resistor R1, a second resistor R2 and a first optical coupler TF 1; the switching-on button S1 controls the +15V power supply to be connected with the second resistor R2, and the +15V power supply is connected with the pin A of the first optical coupler TF1 through the second resistor R2; the pin C of the first optical coupler TF1 is connected with the CPU5 and is connected with a +3.3V power supply through a first resistor R1; the pin E of the first optical coupler TF1 is grounded; the K pin of the first optical coupler TF1 is connected with 15 VGND.
Further, when a closing button S1 is pressed, and a +15V power supply drives the first optical coupler TF1 through the second resistor R2, a pin C of the first optical coupler TF1 is connected with an I/O1 of the CPU5, the I/O1 is logic 0, and the CPU5 detects that the I/O1 is changed from logic 1 to logic 0, and simultaneously detects that the I/O3 is logic 1, and then a closing control output can be sent.
In order to further optimize the above technical solution, the enabling circuit 1 includes: the voltage reference circuit comprises a change-over switch S2, a third resistor R3, a second optical coupler TF2, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a tenth capacitor C10, a third optical coupler TF3, a voltage reference chip U2 and an OR gate U1; the change-over switch S2 is connected with the pin A of the second optical coupler TF2 through a third resistor R3; a pin C of the second optical coupler TF2 is connected with the CPU5 and is connected with one end of an OR gate U1; the pin E of the second optical coupler TF2 is grounded; a K pin of the second optical coupler TF2 is connected with 15 VGND; a pin A of the third optical coupler TF3 is connected with a fifth resistor R5 and connected with a +15V power supply; a pin K of the third optical coupler TF3 is respectively connected with one end of a tenth capacitor C10 and a pin K of a voltage reference chip U2; the other end of the tenth capacitor C10 is connected with the eighth resistor R8 and the sixth resistor R6, and is connected with CO +; the sixth resistor R6 is connected with the R pin of the voltage reference chip U2; a seventh resistor R7 is connected between the pin A and the pin R of the voltage reference chip U2 and is grounded; a pin C of the third optical coupler TF3 is connected with the other end of the OR gate U1; the E pin of the third optical coupler TF3 is grounded.
Further, when the rated voltage of the coil of the permanent magnet mechanism L1 is 220VDC, the voltage of the energy storage capacitor needs to be detected and whether the energy storage capacitor needs to be discharged or not is analyzed, the damage of the mechanism is prevented, if the voltage CO & gtC & lt230V & gt of the energy storage capacitor is detected, closing operation is locked until the voltage of the energy storage capacitor is discharged below 230V, and if the voltage CO & lt230V & gt of the energy storage capacitor is detected, normal closing operation can be performed.
The change-over switch S2 is in an initial state, SW and 15VGND are disconnected, the output voltage of the power supply module is 220VDC, DY _ SE L ECT (voltage identification) and 15V are short-circuited, and after the second optical coupler TF2 is driven through the third resistor R3, the I/O2 is logic 0.
Starting discharge: when the capacitor voltage CO & lt + & gt is not less than 230V, after voltage is divided by a sixth resistor R6 and a seventh resistor R7, V is more than 2.5V, the K and A poles of a voltage reference chip U2 are conducted, a third optocoupler TF3 is conducted, VC _ JC is logic 0, and I/O3 is obtained after the operation with an I/O2 and an OR gate U1 is carried out, and the CPU5 locks the closing operation and starts discharging after detecting that I/O3 is logic 0;
and (3) finishing discharge: when the capacitor discharges below 230V, V is less than 2.5V after voltage division is carried out through a sixth resistor R6 and a seventh resistor R7, the A pole of a voltage reference chip U2 is not conducted, a third optocoupler TF3 is not conducted, VC _ JC is logic 1, I/O3 obtained after operation is carried out on the VC _ JC and an I/O2 through an OR gate U1 is logic 1, and after the CPU5 detects that the I/O3 is logic 1, the locking is released and normal closing operation is carried out.
When the rated voltage of a coil of the permanent magnet mechanism L1 is 380VDC, discharging is not needed, and direct closing operation can be performed, the change-over switch S2 is changed to 60 degrees clockwise, SW and 15VGND are in short circuit, the output voltage of the power supply module is 380VDC, DY _ SE L ECT (voltage identification) and 15V are disconnected, the second optical coupler TF2 is not conducted, I/O2 is logic 1, and after the CPU5 detects that I/O2 is logic 1, normal closing operation can be performed.
In order to further optimize the above technical solution, the discharge circuit 2 includes: a fourth optical coupler TF4, a ninth resistor R9, a triode Q1, a thirteenth resistor R13 and a relay K1; the +3.3V power supply is connected with the pin A of the fourth optical coupler TF4 through a ninth resistor R9; the output end of the CPU5 is connected with a K pin of a fourth optical coupler TF 4; a pin C of the fourth optical coupler TF4 is connected with a +24V power supply; the pin E of the fourth optical coupler TF4 is connected with a triode Q1; the triode Q1 controls the relay K1 to pull in and discharge through the thirteenth resistor R13.
In order to further optimize the technical scheme, one end of a coil of the relay K1 is connected with the C pole of the triode Q1, and the other end of the coil is connected with a +24V power supply; the movable contact of a group of normally open contacts of the relay K1 is connected with CO +, and the fixed contact is connected with a thirteenth resistor R13.
Further, when the CPU5 detects that the I/O3 is logic 0, the CPU5 controls the I/O4 to become low level, the fourth optocoupler TF4 is turned on, the +24V power supply drives the triode Q1 through the eleventh resistor R11, the C and E poles of the triode Q1 are turned on, the relay K1 is pulled in, the contact 5 pin and the contact 7 pin are shorted, and the energy storage capacitor voltage CO + is discharged through the thirteenth resistor R13.
In order to further optimize the technical scheme, the switching-on control circuit 4 comprises an optocoupler U5, a tenth resistor R10, a ninth capacitor C9, an IGBT Q2 and a permanent magnet mechanism L1, a pin A of the optocoupler U5 is connected with a tenth resistor R10 and is connected with a +3.3V power supply, a pin C of the optocoupler U5 is connected with an output end of a CPU5, a pin VCC of the optocoupler U5 is connected with a +15V power supply and is connected with one end of the ninth capacitor C9, the other end of the ninth capacitor C9 is connected with a 15VGND, a pin VO of the optocoupler U5 controls the switching-on action of the permanent magnet mechanism L1 through the IGBT Q2, and a pin GND of the optocoupler U5 is grounded.
In order to further optimize the technical scheme, a twelfth resistor R12 and a diode D23 are arranged between the VO pin of the optocoupler U5 and the IGBT Q2, and the diode D23 is connected with the twelfth resistor R12 in parallel; the negative electrode of the diode D23 is connected with the optocoupler U5, and the positive electrode of the diode D23 is connected with the IGBT Q2.
In order to further optimize the technical scheme, a voltage dependent resistor is arranged between the C pole and the E pole of the IGBT Q2.
In order to further optimize the technical scheme, a freewheeling diode is arranged between the C pole and the E pole of the NGBT Q2.
Further, after a closing control command is sent, the I/O5 changes to a low level, the optocoupler U5 is turned on, the VO pin of the optocoupler U5 is at a high level, the IGBT Q2 is controlled to be turned on through the twelfth resistor R12, the C and E poles of the IGBT Q2 are turned on, the negative electrode of the permanent magnet mechanism L1 changes to a low level, and the permanent magnet mechanism L1 performs a closing operation.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An intelligent controller suitable for 220V and 380V permanent magnetic mechanisms, comprising: the device comprises a CPU, a switching-on command input circuit, an enabling circuit, a discharging circuit and a switching-on control circuit; the switching-on command input circuit and the enabling circuit are respectively connected with the input end of the CPU; the discharging circuit and the closing control circuit are respectively connected with the output end of the CPU;
the CPU judges whether to discharge or not according to the rated voltage of the coil of the permanent magnetic mechanism, and discharges through the discharge circuit; the enabling circuit judges whether to carry out switching-on according to the voltage of the energy storage capacitor, and sends a switching-on command to the CPU through the switching-on command input circuit, and the CPU controls the switching-on control circuit to carry out switching-on operation.
2. The intelligent controller suitable for 220V and 380V permanent magnet mechanisms according to claim 1, wherein the closing command input circuit comprises: the circuit breaker comprises a closing button, a first resistor, a second resistor and a first optocoupler; the switching-on button controls a +15V power supply to be connected with the second resistor, and the +15V power supply is connected with the pin A of the first optocoupler through the second resistor; the pin C of the first optocoupler is connected with the CPU and is connected with a +3.3V power supply through the first resistor; the pin E of the first optocoupler is grounded; the K pin of the first optical coupler is connected with 15 VGND.
3. An intelligent controller suitable for 220V and 380V permanent magnet mechanisms according to claim 1, wherein the enabling circuit comprises: the circuit comprises a change-over switch, a third resistor, a second optocoupler, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a tenth capacitor, a third optocoupler, a voltage reference chip and an OR gate; the change-over switch is connected with a pin A of the second optocoupler through the third resistor; a pin C of the second optocoupler is connected with the CPU and is connected with one end of the OR gate; the pin E of the second optocoupler is grounded; the K pin of the second optical coupler is connected with 15 VGND; the pin A of the third optocoupler is connected with the fifth resistor and a +15V power supply; a pin K of the third optocoupler is connected with one end of the tenth capacitor and a pin K of the voltage reference chip respectively; the other end of the tenth capacitor is connected with the eighth resistor, the sixth resistor and CO +; the sixth resistor is connected with the R pin of the voltage reference chip; the seventh resistor is connected between the pin A and the pin R of the voltage reference chip and grounded; the pin C of the third optocoupler is connected with the other end of the OR gate; and the pin E of the third optocoupler is grounded.
4. An intelligent controller suitable for 220V and 380V permanent magnet mechanisms according to claim 1, wherein the discharge circuit comprises: the fourth optocoupler, the ninth resistor, the triode, the thirteenth resistor and the relay; the +3.3V power supply is connected with the pin A of the fourth optocoupler through the ninth resistor; the output end of the CPU is connected with a K pin of the fourth optocoupler; the pin C of the fourth optocoupler is connected with a +24V power supply; the pin E of the fourth optocoupler is connected with the triode; and the triode controls the relay to pull in and discharge through a thirteenth resistor.
5. An intelligent controller suitable for 220V and 380V permanent magnet mechanisms according to claim 4, wherein one end of a coil of the relay is connected with a C pole of the triode, and the other end of the coil of the relay is connected with a +24V power supply; and a movable contact in a group of normally open contacts of the relay is connected with CO +, and a static contact is connected with a thirteenth resistor.
6. The intelligent controller suitable for 220V and 380V permanent magnet mechanisms according to claim 1, wherein the closing control circuit comprises: a fifth optocoupler, a tenth resistor, a ninth capacitor, an IGBT and a permanent magnet mechanism; the pin A of the fifth optocoupler is connected with the tenth resistor and is connected with a +3.3V power supply in parallel; the pin C of the fifth optocoupler is connected with the output end of the CPU; a VCC pin of the fifth optocoupler is connected with a +15V power supply and is connected with one end of the ninth capacitor, and the other end of the ninth capacitor is connected with 15 VGND; the VO pin of the fifth optocoupler controls the closing action of the permanent magnet mechanism through the IGBT; and the GND pin of the fifth optocoupler is grounded.
7. The intelligent controller suitable for 220V and 380V permanent magnet mechanisms according to claim 6, wherein a twelfth resistor and a diode are arranged between a VO pin of the fifth optocoupler and the IGBT, and the diode is connected with the twelfth resistor in parallel; and the cathode of the diode is connected with the fifth optocoupler, and the anode of the diode is connected with the IGBT.
8. The intelligent controller suitable for 220V and 380V permanent magnet mechanisms according to claim 6, wherein a voltage dependent resistor is arranged between a C pole and an E pole of the IGBT.
9. An intelligent controller suitable for 220V and 380V permanent magnet mechanisms according to claim 6, wherein a freewheeling diode is arranged between a pole C and a pole E of the IGBT.
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| CN201922364573.3U CN211045303U (en) | 2019-12-25 | 2019-12-25 | Intelligent controller suitable for 220V and 380V permanent magnet mechanism |
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| CN201922364573.3U CN211045303U (en) | 2019-12-25 | 2019-12-25 | Intelligent controller suitable for 220V and 380V permanent magnet mechanism |
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| CN211045303U true CN211045303U (en) | 2020-07-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114442519A (en) * | 2021-12-20 | 2022-05-06 | 南京铁道职业技术学院 | Rail vehicle sliding fault simulation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114442519A (en) * | 2021-12-20 | 2022-05-06 | 南京铁道职业技术学院 | Rail vehicle sliding fault simulation system |
| CN114442519B (en) * | 2021-12-20 | 2023-09-22 | 南京铁道职业技术学院 | Rail vehicle slides trouble analog system |
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