CN106444605B - Permanent magnet switch intelligent controller realized by PLC - Google Patents
Permanent magnet switch intelligent controller realized by PLC Download PDFInfo
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- CN106444605B CN106444605B CN201610854900.1A CN201610854900A CN106444605B CN 106444605 B CN106444605 B CN 106444605B CN 201610854900 A CN201610854900 A CN 201610854900A CN 106444605 B CN106444605 B CN 106444605B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/056—Programming the PLC
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/13—Plc programming
- G05B2219/13018—Conversion ladder diagram to decision system, machine code, language
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Abstract
A permanent magnet switch intelligent controller realized by a PLC belongs to the technical field of 10KV permanent magnet switch opening and closing control loops, and particularly relates to a permanent magnet switch intelligent controller realized by the PLC. The invention provides a permanent magnet switch intelligent controller which can obviously reduce the failure rate of products and is realized by a PLC. The invention comprises a PLC, energy storage release diodes G1 and G2, switching-on intermediate relays HJ1 and HJ2 and tripping intermediate relays TJ1 and TJ2, and is characterized in that one end of a control end of the HJ1 is connected with the positive electrode of a first power supply through a switching-on contact Y4 output by the PLC, and the other end of the control end of the HJ1 is connected with the negative electrode of the first power supply; one end of the HJ2 control end is connected with the positive electrode of the first power supply through a loop contact Y5 which is output by the PLC and is used for providing connection energy storage and release diodes for the closing coil, and the other end of the HJ2 control end is connected with the negative electrode of the first power supply; one end of the TJ1 control end is connected with the positive electrode of the first power supply through a tripping contact Y6 output by the PLC.
Description
Technical Field
The invention belongs to the technical field of switching-on and switching-off control loops of 10KV permanent magnet switches, and particularly relates to an intelligent controller of a permanent magnet switch realized by a PLC.
Background
At present, a large number of permanent magnet mechanism switches [ permanent magnet holding and electronically controlled electromagnetic operating mechanisms ] are used for 10KV lines of a plurality of 66KV transformer substations, and the permanent magnet mechanism switches have the advantages of simple mechanical structure, difficult damage, durability, low driving power and the like. However, the tripping and closing loop shares a coil, which is a disadvantage that the relay protection device connected with the tripping and closing loop of the switch needs to output tripping and closing commands, the tripping and closing commands cannot be directly connected to a coil of the switch of the permanent magnet mechanism, and the tripping and closing commands can only stay on the tripping and closing coil for a short time.
The technical problem to be solved by the intelligent controller of the permanent magnet switch is that.
1. The tripping and closing pulse output time is not too long or too short, and the tripping and closing pulse is automatically released after the tripping and closing task is completed.
2. And the automatic switching of the tripping and closing command is completed through the automatic control of the secondary loop.
3. The charging loop of the closing capacitor is canceled, the switching of the closing loop is realized by the PLC, and the reasonable closing command output time is designed.
The principle of the existing permanent magnet switch mechanism is explained.
1) The existing controller is an intermediate interface conversion device connected between the tripping and closing of the protection outlet and the switch coil, a tripping and closing command sent by upstairs protection firstly starts a tripping and closing intermediate relay in the switch cabinet, the tripping and closing relay inputs an empty contact of the tripping and closing relay to the controller, and the controller obtains an opening auxiliary signal of the switch at a tripping position plus a working position or a plus test position besides the opening of the just-obtained tripping and closing empty contact.
2) The controller may function as long as it is.
And the tripping and closing command output to the permanent magnet switch is immediately cut off after the tripping and closing task is completed.
After the tripping and closing command is retracted, the switch coil cannot obtain a reverse electromagnetic signal, so that the switch rebounds.
3) The permanent magnet switch is provided with only one coil, and is switched on when a command of positive electricity of the left terminal and negative electricity of the right terminal is obtained; and when a command of positive electricity at the right terminal and negative electricity at the left terminal is obtained, opening the gate.
4) When the permanent magnet switch obtains the tripping and closing command, the switch cannot complete the tripping and closing task, and the tripping and closing pulse should be automatically interrupted.
5) The tripping and closing command should be output by the contact of the high-capacity intermediate relay.
Disclosure of Invention
Aiming at the problems, the invention provides the intelligent controller of the permanent magnet switch, which can obviously reduce the failure rate of products and is realized by using the PLC.
In order to achieve the purpose, the invention adopts the following technical scheme that the energy storage relay comprises a PLC, energy storage release diodes G1 and G2, switching-on intermediate relays HJ1 and HJ2 and tripping intermediate relays TJ1 and TJ2, and is characterized in that one end of a control end of the HJ1 is connected with a positive electrode of a first power supply through a switching-on contact Y4 output by the PLC, and the other end of the control end of the HJ1 is connected with a negative electrode of the first power supply.
One end of the HJ2 control end is connected with the positive electrode of the first power supply through a loop contact Y5 which is output by the PLC and is used for providing connection energy storage release diodes for the closing coil, and the other end of the HJ2 control end is connected with the negative electrode of the first power supply.
One end of the TJ1 control end is connected with the positive electrode of the first power supply through a tripping contact Y6 output by the PLC, and the other end of the TJ1 control end is connected with the negative electrode of the first power supply.
One end of the TJ2 control end is connected with the positive electrode of the first power supply through a loop contact Y5 which is output by the PLC and is used for providing connection energy storage and release diodes for the tripping coil, and the other end of the TJ2 control end is connected with the negative electrode of the first power supply.
One end of the first normally open contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the first normally closed contact of the HJ1 controlled end is connected with the end A of the opening and closing coil.
One end of the first normally-closed contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the first normally-open contact of the HJ1 controlled end is connected with the end B of the opening and closing coil.
One end of the second normally-closed contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the second normally-open contact of the HJ1 controlled end is connected with the end A of the opening and closing coil.
One end of the second normally open contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the second normally closed contact of the HJ1 controlled end is connected with the end B of the opening and closing coil.
One end of the first normally open contact of the HJ2 controlled end is connected with the cathode of the G1, and the other end of the first normally closed contact of the HJ2 controlled end is connected with the end A of the opening and closing coil.
One end of the first normally-closed contact of the HJ2 controlled end is connected with the cathode of the G1, and the other end of the first normally-open contact of the HJ2 controlled end is connected with the end B of the opening and closing coil.
One end of the second normally-closed contact of the HJ2 controlled end is connected with the positive electrode of G2, and the other end of the second normally-open contact of the HJ2 controlled end is connected with the end A of the opening and closing coil.
One end of the second normally open contact of the HJ2 controlled end is connected with the positive electrode of G2, and the other end of the second normally closed contact of the HJ2 controlled end is connected with the end B of the opening and closing coil.
The G2 negative electrode is connected with the G1 positive electrode, and the end A and the end B are both ends of the same opening and closing coil.
The signal input port of the PLC is respectively connected with an externally input permanent magnet switch tripping position auxiliary signal terminal, an externally input closing signal terminal and an externally input opening signal terminal.
As a preferable scheme, the PLC of the invention adopts NAiS FPC1-16 PLC.
As another preferable scheme, the switching-on intermediate relay and the tripping intermediate relay are 200V direct-current intermediate relays.
As another preferable scheme, the positive electrode of the first power supply is +24V, and the negative electrode of the first power supply is-24V; the second power supply positive electrode is +220V, and the second power supply negative electrode is-220V.
Secondly, the withstand voltage of the energy storage release diode is 220V.
The program ladder diagram of the PLC according to the present invention includes an externally input trip position auxiliary contact X1, position contact internal extension intermediate relays R0 and R1, and trip position contact extension intermediate relays Y0 and Y1 capable of outputting contacts.
The switching-on control device comprises an externally input switching-on contact X4, an externally input switching-off contact X6, a switching-on command delay time relay T3, a switching-on command output Y4, a switching-on command self-holding internal relay R4, a switching-on command self-holding output intermediate relay Y5 and a switching-on command output time relay T4.
The switching-off command delay time relay T5, the switching-off command output Y6, the switching-off command self-holding internal relay R6, the switching-off command self-holding output intermediate relay Y7 and the tripping command output time relay T6.
The time delay relay T1 of the trip circuit is disconnected when a closing command occurs, the internal relay R2 of the trip circuit is disconnected when the closing command occurs, the external output relay Y2 of the trip circuit is disconnected when the closing command occurs, the time delay relay T2 of the trip circuit is disconnected when the tripping command occurs, the internal relay R3 of the trip circuit is disconnected when the tripping command occurs, and the external output relay Y3 of the trip circuit is disconnected when the tripping command occurs.
The program ladder diagram line 1 of the PLC is: the left end R1 is normally open, and the right ends R0 and Y0 are connected in parallel.
Program ladder diagram line 2 of the PLC is: left end X1, right end R1, Y1 are parallelly connected.
The program ladder diagram line 3 of the PLC is: left end X4, right end TMR 3K 2.
Program ladder diagram line 4 of the PLC is: the left time relay T3 normally open switch, the R1 normally open switch and the R2 normally closed switch are connected in series, and the right time relay Y4 is connected in series.
Program ladder diagram line 5 of the PLC is: the normally open switch at the left end R4 is connected with the normally closed switch of the time relay T4 in series and then connected with the Y4 in parallel, and the right ends R4 and Y5 are connected in parallel.
Program ladder diagram line 6 of the PLC is: the left end R4 is normally open, and the right end TMX 4K 4 is normally open.
Program ladder diagram line 7 of the PLC is: left end X6, right end TMR 5K 5.
Program ladder diagram line 8 of the PLC is: the left time relay T5 normally open switch, the R0 normally open switch and the R3 normally closed switch are connected in series, and the right time relay Y6 is connected in series.
Program ladder diagram line 9 of the PLC is: the normally open switch at the left end R6 is connected with the normally closed switch of the time relay T6 in series and then connected with the Y6 in parallel, and the right ends R6 and Y7 are connected in parallel.
Program ladder diagram line 10 of the PLC is: left end R6 normally open switch, right-hand member TMX 6K 20.
Program ladder diagram line 11 of the PLC is: the normally open switches at the left ends X4 and R1 are connected in series, and the right end TMX 1K 2 is connected in series.
Program ladder diagram line 12 of the PLC is: the normally open switches at the left ends X6 and R0 are connected in series, and the right end TMX 2K 2.
Program ladder diagram line 13 of the PLC is: the left end R2 normally open switch and the R1 normally open switch are connected in series and then are normally open Guan Bingjie with the time relay T1, and the right ends Y2 and R2 are connected in parallel.
Program ladder diagram line 14 of the PLC is: the left end R3 normally open switch and the R0 normally open switch are connected in series and then are connected with the time relay T2 normally open switch Guan Bingjie in parallel, and the right ends Y3 and R3 are connected in parallel.
TMX represents a 0.1 second unit time relay; TMR represents a 0.01 second unit time relay, K represents decimal; the numbers after TMX or TMR represent time relay numbers, and the numbers after K represent time multipliers.
The invention has the beneficial effects that.
According to the invention, switching of the switching-on/off loop is realized through cooperation of the switching-on intermediate relay, the tripping intermediate relay and the PLC.
The PLC is adopted, so that the tripping circuit is automatically disconnected when the switching-on circuit is switched on, and the switching-on circuit is automatically disconnected when the tripping circuit is switched on.
The loop of the invention is designed with an energy release loop in the transition process of the inductance coil (namely the tripping and closing coil).
According to the invention, a capacitor energy storage mode is not used for switching on, and a relay contact is combined with a PLC programmable controller to switch the polarity of the tripping and switching-on coil; so that the product is not easy to fail.
Drawings
The invention is further described below with reference to the drawings and the detailed description. The scope of the present invention is not limited to the following description.
FIGS. 1-1 and 1-2 are ladder diagrams of the program of the PLC programmable controller of the invention.
Fig. 2 is a circuit diagram of an intermediate relay for switching on and off according to the present invention.
Fig. 3 is a circuit diagram of an opening and closing outlet of the present invention.
Fig. 4 is a diagram of a tripping and closing coil energy storage release circuit of the invention.
Fig. 5 is a schematic diagram of the PLC programmable controller of the present invention.
Detailed Description
As shown in the figure, the invention comprises PLC, energy storage release diodes G1 and G2, switching-on intermediate relays HJ1 and HJ2 and tripping intermediate relays TJ1 and TJ2, wherein one end of a control end of the HJ1 is connected with the positive electrode of a first power supply through a switching-on contact Y4 output by the PLC, and the other end of the control end is connected with the negative electrode of the first power supply.
One end of the HJ2 control end is connected with the positive electrode of the first power supply through a loop contact Y5 which is output by the PLC and is used for providing connection energy storage release diodes for the closing coil, and the other end of the HJ2 control end is connected with the negative electrode of the first power supply.
One end of the TJ1 control end is connected with the positive electrode of the first power supply through a tripping contact Y6 output by the PLC, and the other end of the TJ1 control end is connected with the negative electrode of the first power supply.
One end of the TJ2 control end is connected with the positive electrode of the first power supply through a loop contact Y5 which is output by the PLC and is used for providing connection energy storage and release diodes for the tripping coil, and the other end of the TJ2 control end is connected with the negative electrode of the first power supply.
One end of the first normally open contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the first normally closed contact of the HJ1 controlled end is connected with the end A of the opening and closing coil.
One end of the first normally-closed contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the first normally-open contact of the HJ1 controlled end is connected with the end B of the opening and closing coil.
One end of the second normally-closed contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the second normally-open contact of the HJ1 controlled end is connected with the end A of the opening and closing coil.
One end of the second normally open contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the second normally closed contact of the HJ1 controlled end is connected with the end B of the opening and closing coil.
One end of the first normally open contact of the HJ2 controlled end is connected with the cathode of the G1, and the other end of the first normally closed contact of the HJ2 controlled end is connected with the end A of the opening and closing coil.
One end of the first normally-closed contact of the HJ2 controlled end is connected with the cathode of the G1, and the other end of the first normally-open contact of the HJ2 controlled end is connected with the end B of the opening and closing coil.
One end of the second normally-closed contact of the HJ2 controlled end is connected with the positive electrode of G2, and the other end of the second normally-open contact of the HJ2 controlled end is connected with the end A of the opening and closing coil.
One end of the second normally open contact of the HJ2 controlled end is connected with the positive electrode of G2, and the other end of the second normally closed contact of the HJ2 controlled end is connected with the end B of the opening and closing coil.
The G2 negative electrode is connected with the G1 positive electrode, and the end A and the end B are both ends of the same opening and closing coil.
The signal input port of the PLC is respectively connected with an externally input permanent magnet switch tripping position auxiliary signal terminal, an externally input closing signal terminal and an externally input opening signal terminal.
The PLC adopts NAiS FPC1-16 PLC.
The switching-on intermediate relay and the tripping intermediate relay are 200V direct-current intermediate relays.
The positive electrode of the first power supply is +24V, and the negative electrode of the first power supply is-24V; the second power supply positive electrode is +220V, and the second power supply negative electrode is-220V.
The energy storage release diode has a withstand voltage of 220 volts.
The program ladder diagram of the PLC comprises an externally input tripping position auxiliary contact X1, position contact internal extension intermediate relays R0 and R1, and tripping position contact extension intermediate relays Y0 and Y1 capable of outputting contacts.
The switching-on control device comprises an externally input switching-on contact X4, an externally input switching-off contact X6, a switching-on command delay time relay T3, a switching-on command output Y4, a switching-on command self-holding internal relay R4, a switching-on command self-holding output intermediate relay Y5 and a switching-on command output time relay T4.
The switching-off command delay time relay T5, the switching-off command output Y6, the switching-off command self-holding internal relay R6, the switching-off command self-holding output intermediate relay Y7 and the tripping command output time relay T6.
The time delay relay T1 of the trip circuit is disconnected when a closing command occurs, the internal relay R2 of the trip circuit is disconnected when the closing command occurs, the external output relay Y2 of the trip circuit is disconnected when the closing command occurs, the time delay relay T2 of the trip circuit is disconnected when the tripping command occurs, the internal relay R3 of the trip circuit is disconnected when the tripping command occurs, and the external output relay Y3 of the trip circuit is disconnected when the tripping command occurs.
The program ladder diagram line 1 of the PLC is: the left end R1 is normally open, and the right ends R0 and Y0 are connected in parallel.
Program ladder diagram line 2 of the PLC is: left end X1, right end R1, Y1 are parallelly connected.
The program ladder diagram line 3 of the PLC is: left end X4, right end TMR 3K 2.
Program ladder diagram line 4 of the PLC is: the left time relay T3 normally open switch, the R1 normally open switch and the R2 normally closed switch are connected in series, and the right time relay Y4 is connected in series.
Program ladder diagram line 5 of the PLC is: the normally open switch at the left end R4 is connected with the normally closed switch of the time relay T4 in series and then connected with the Y4 in parallel, and the right ends R4 and Y5 are connected in parallel.
Program ladder diagram line 6 of the PLC is: the left end R4 is normally open, and the right end TMX 4K 4 is normally open.
Program ladder diagram line 7 of the PLC is: left end X6, right end TMR 5K 5.
Program ladder diagram line 8 of the PLC is: the left time relay T5 normally open switch, the R0 normally open switch and the R3 normally closed switch are connected in series, and the right time relay Y6 is connected in series.
Program ladder diagram line 9 of the PLC is: the normally open switch at the left end R6 is connected with the normally closed switch of the time relay T6 in series and then connected with the Y6 in parallel, and the right ends R6 and Y7 are connected in parallel.
Program ladder diagram line 10 of the PLC is: left end R6 normally open switch, right-hand member TMX 6K 20.
Program ladder diagram line 11 of the PLC is: the normally open switches at the left ends X4 and R1 are connected in series, and the right end TMX 1K 2 is connected in series.
Program ladder diagram line 12 of the PLC is: the normally open switches at the left ends X6 and R0 are connected in series, and the right end TMX 2K 2.
Program ladder diagram line 13 of the PLC is: the left end R2 normally open switch and the R1 normally open switch are connected in series and then are normally open Guan Bingjie with the time relay T1, and the right ends Y2 and R2 are connected in parallel.
Program ladder diagram line 14 of the PLC is: the left end R3 normally open switch and the R0 normally open switch are connected in series and then are connected with the time relay T2 normally open switch Guan Bingjie in parallel, and the right ends Y3 and R3 are connected in parallel.
TMX represents a 0.1 second unit time relay; TMR represents a 0.01 second unit time relay, K represents decimal; the numbers after TMX or TMR represent time relay numbers, and the numbers after K represent time multipliers.
The ladder diagram of the program of fig. 1 has main functions.
1) The time of each tripping and closing pulse is not more than 0.2 seconds, and the tripping and closing loop is automatically disconnected after 0.2 seconds.
2) The switching-on pulse can be output after 20 milliseconds after each PLC is powered on, and the tripping pulse can be output after 50 milliseconds.
3) In order to prevent tripping and closing commands from simultaneously existing, when a loop is designed, a closing normally-open contact is connected in series with a tripping normally-closed contact or vice versa.
4) When the loop considers a manual fault line, the switch just completes a closing task after receiving a closing command, and immediately receives a tripping command. The switching-on loop is disconnected before the tripping pulse is sent, and then the tripping loop is opened after the electromagnetic storage energy of the switching-on coil discharges the diode for 0.4 seconds. The switching-on energy storage of the switching-on coil of the permanent magnet mechanism can be well released by the diode, preparation is made for subsequent tripping, and meanwhile, the contact point of the switching-on intermediate relay is prevented from being burnt out due to arc discharge. The design of the trip circuit is considered to be matched with the automatic reclosing time of 3 seconds, so that the trip coil energy storage release time of 2 seconds is given. This design also allows protection from self-starting currents when the line is delivering power.
5) When the tripping and closing is unsuccessful (the auxiliary contact of the switch is not converted), the command is automatically recovered after 0.2 seconds from the tripping and closing command is obtained by the switch, and the loop is always kept in the state, and at the moment, the program can be restored to the initial state only by disconnecting the direct current of the PLC device and then re-supplying the electricity. When the tripping and closing is successful (the auxiliary switch contacts have been switched), the above-mentioned problem does not exist.
6) Program installation uses a normally closed auxiliary contact design of the switch.
The program ladder diagram of the PLC is described above. TMX represents a 0.1 second unit time relay; TMR represents a 0.01 second unit time relay, and K represents decimal. TMX 6K 20 represents a timing of the T6 time relay of 20×0.1=2 seconds. R is an internal outlet intermediate relay; y is an external output intermediate relay; x is the PLC input terminal.
In fig. 2: y4 and Y6 are respectively the combined and tripped contacts of the PLC output; y5 and Y7 are the loop contacts for connecting the energy storage release diode for the tripping and closing coil. Y5 (Y7) and Y4 (Y6) are operated simultaneously, Y5 (Y7) is returned later than Y4 (Y6) (in FIG. 1-1, symbolThe ladder diagram of the programmable controller is a normally open contact; />Is a normally closed contact; />Is an intermediate relay with high internal resistance.
1) When T3 is operated, R1 is operated, and R2 is not operated, Y4 is started.
2) And the Y4 action starts R4 and Y5, meanwhile, a holding loop is formed by the pair Y5 of the normally-open contact of R4 and the normally-closed contact of T4, even if Y4 returns after the R4 and Y5 are started, the R4 and Y5 can still continue to act by the normally-closed contacts of R4 and T4, and only when T4 acts and the normally-closed contact of T4 is disconnected, Y5 can return.
That is, when Y4 returns, Y5 does not return immediately, and only T4 also acts on Y5 to return.
The same applies to the operation relationship between Y6 and Y7. ) HJ1, HJ2, TJ1, TJ2 are 200V dc intermediate relays having at least two pairs of normally open contacts and two pairs of normally closed contacts.
It should be understood that the foregoing detailed description of the present invention is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention may be modified or substituted for the same technical effects; as long as the use requirement is met, the invention is within the protection scope of the invention.
Claims (4)
1. The intelligent controller of the permanent magnet switch realized by the PLC comprises the PLC, energy storage release diodes G1 and G2, switching-on intermediate relays HJ1 and HJ2 and tripping intermediate relays TJ1 and TJ2, and is characterized in that one end of a control end of the HJ1 is connected with the positive electrode of a first power supply through a switching-on contact Y4 output by the PLC, and the other end of the control end of the HJ1 is connected with the negative electrode of the first power supply;
one end of the HJ2 control end is connected with the positive electrode of the first power supply through a loop contact Y5 which is output by the PLC and is used for providing connection energy storage and release diodes for the closing coil, and the other end of the HJ2 control end is connected with the negative electrode of the first power supply;
one end of the TJ1 control end is connected with the positive electrode of the first power supply through a tripping contact Y6 output by the PLC, and the other end of the TJ1 control end is connected with the negative electrode of the first power supply;
one end of the TJ2 control end is connected with the positive electrode of the first power supply through a loop contact Y5 which is output by the PLC and is used for providing connection energy storage and release diodes for the tripping coil, and the other end of the TJ2 control end is connected with the negative electrode of the first power supply;
one end of a first normally open contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the first normally closed contact of the HJ1 controlled end is connected with the end A of the opening and closing coil;
one end of a first normally-closed contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the first normally-open contact of the HJ1 controlled end is connected with the end B of the opening and closing coil;
one end of a second normally-closed contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the second normally-closed contact of the HJ1 controlled end is connected with the end A of the opening and closing coil through a second normally-open contact of the TJ1 controlled end;
one end of a second normally open contact of the HJ1 controlled end is connected with the positive electrode of the second power supply, and the other end of the second normally closed contact of the HJ1 controlled end is connected with the end B of the opening and closing coil;
one end of a first normally open contact of the HJ2 controlled end is connected with the cathode of the G1, and the other end of the first normally closed contact of the HJ2 controlled end is connected with the end A of the opening and closing coil;
one end of a first normally-closed contact of the HJ2 controlled end is connected with the cathode of the G1, and the other end of the first normally-closed contact of the HJ2 controlled end is connected with the end B of the opening and closing coil through a first normally-open contact of the TJ2 controlled end;
one end of the second normally-closed contact of the HJ2 controlled end is connected with the positive electrode of G2, and the other end of the second normally-open contact of the HJ2 controlled end is connected with the end A of the opening and closing coil;
one end of the second normally open contact of the HJ2 controlled end is connected with the positive electrode of G2, and the other end of the second normally closed contact of the HJ2 controlled end is connected with the end B of the opening and closing coil;
the G2 negative electrode is connected with the G1 positive electrode, and the end A and the end B are both ends of the same opening and closing coil;
the signal input port of the PLC is respectively connected with an externally input auxiliary signal terminal of the tripping position of the permanent magnet switch, an externally input closing signal terminal and an externally input opening signal terminal;
the switching-on intermediate relay and the tripping intermediate relay are 200V direct-current intermediate relays;
the positive electrode of the first power supply is +24V, and the negative electrode of the first power supply is-24V; the second power supply positive electrode is +220V, and the second power supply negative electrode is-220V.
2. The intelligent controller for the permanent magnet switch realized by the PLC according to claim 1, wherein the PLC adopts NAiS FPC1-16 PLC.
3. The intelligent controller for the permanent magnet switch realized by the PLC according to claim 1, wherein the withstand voltage of the energy storage release diode is 220V.
4. The intelligent controller of permanent magnet switch realized by PLC according to claim 1, characterized in that the program ladder diagram of PLC comprises trip position auxiliary contact X1 inputted from outside, position contact internal extension intermediate relays R0, R1, trip position contact extension intermediate relays Y0, Y1 of outputtable contact,
an externally input closing contact X4, an externally input opening contact X6, a closing command delay time relay T3, a closing command output Y4, a closing command self-holding internal relay R4, a closing command self-holding output intermediate relay Y5, a closing command output time relay T4,
a switching-off command delay time relay T5, a switching-off command output Y6, a switching-off command self-holding internal relay R6, a switching-off command self-holding output intermediate relay Y7, a trip command output time relay T6,
the method comprises the steps that a delay time relay T1 of a tripping circuit is disconnected when a switching-on command occurs, an internal relay R2 of the tripping circuit is disconnected when the switching-on command occurs, an external output relay Y2 of the tripping circuit is disconnected when the switching-on command occurs, the delay time relay T2 of the tripping circuit is disconnected when the tripping command occurs, an internal relay R3 of the tripping circuit is disconnected when the tripping command occurs, and an external output relay Y3 of the tripping circuit is disconnected when the tripping command occurs;
the program ladder diagram line 1 of the PLC is: the left end R1 is normally open, and the right ends R0 and Y0 are connected in parallel;
program ladder diagram line 2 of the PLC is: the left end X1, the right ends R1 and Y1 are connected in parallel;
the program ladder diagram line 3 of the PLC is: left end X4, right end TMR 3K 2;
program ladder diagram line 4 of the PLC is: the time relay T3 normally open switch at the left end, the R1 normally open switch and the R2 normally closed switch are connected in series, and the Y4 at the right end;
program ladder diagram line 5 of the PLC is: the normally open switch at the left end R4 is connected in series with the normally closed switch of the time relay T4 and then connected in parallel with the Y4, and the right ends R4 and Y5 are connected in parallel;
program ladder diagram line 6 of the PLC is: a left end R4 normally open switch and a right end TMX 4K 4;
program ladder diagram line 7 of the PLC is: left end X6, right end TMR 5K 5;
program ladder diagram line 8 of the PLC is: the time relay T5 normally open switch at the left end, the R0 normally open switch and the R3 normally closed switch are connected in series, and the Y6 at the right end;
program ladder diagram line 9 of the PLC is: the normally open switch at the left end R6 is connected with the normally closed switch of the time relay T6 in series and then connected with the Y6 in parallel, and the right ends R6 and Y7 are connected in parallel;
program ladder diagram line 10 of the PLC is: a left end R6 normally open switch and a right end TMX 6K 20;
program ladder diagram line 11 of the PLC is: the normally open switches at the left ends X4 and R1 are connected in series, and the right end TMX 1K 2;
program ladder diagram line 12 of the PLC is: the normally open switches at the left ends X6 and R0 are connected in series, and the right end TMX 2K 2;
program ladder diagram line 13 of the PLC is: the left end R2 normally open switch and the R1 normally open switch are connected in series and then are normally open Guan Bingjie with the time relay T1, and the right ends Y2 and R2 are connected in parallel;
program ladder diagram line 14 of the PLC is: the left end R3 normally open switch and the R0 normally open switch are connected in series and then are normally open Guan Bingjie with the time relay T2, and the right ends Y3 and R3 are connected in parallel;
TMX represents a 0.1 second unit time relay; TMR represents a 0.01 second unit time relay, K represents decimal; the numbers after TMX or TMR represent time relay numbers, and the numbers after K represent time multipliers.
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