CN216411931U - Parallel operation master control PLC's redundant control system - Google Patents
Parallel operation master control PLC's redundant control system Download PDFInfo
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- CN216411931U CN216411931U CN202123095269.7U CN202123095269U CN216411931U CN 216411931 U CN216411931 U CN 216411931U CN 202123095269 U CN202123095269 U CN 202123095269U CN 216411931 U CN216411931 U CN 216411931U
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Abstract
The utility model relates to the technical field of parallel machine master control, in particular to a redundancy control system of a parallel machine master control PLC, which comprises a generator set controller, a plurality of diesel generator sets in parallel machine control connection, a programmable controller PLC1, a programmable controller PLC2, a switch, a storage battery and a plurality of groups of relays, wherein the programmable controller PLC1 and the programmable controller PLC2 are communicated, when the programmable controller PLC1 is abnormal, the programmable controller PLC2 detects and sends out corresponding signals to the relays, the programmable controller PLC1 is switched to an emergency manual mode through mutual cooperation of the plurality of groups of relays, the programmable controller PLC2 closes the emergency manual mode to obtain a master control right, and sends signals to the generator set controller to control a diesel generator to continuously operate so as to realize uninterrupted power supply.
Description
Technical Field
The utility model relates to the technical field of parallel machine master control, in particular to a redundancy control system of a parallel machine master control PLC.
Background
In a traditional parallel operation master control system, when the parallel operation master control system detects a mains supply voltage loss signal, a startup command is output to a generating set controller through PLC control logic programming, and the generating set controller controls a diesel generator to start and run;
the disadvantages are that: the traditional parallel operation master control system only uses one set of PLC, when the PLC of the parallel operation master control system breaks down, such as tripping of a power supply circuit breaker, internal short circuit, communication line interruption and the like, a worker needs to overhaul and remove the fault of the parallel operation master control system, and then can be electrified and restarted, so that the time for solving the fault and recovering is long, and the requirements of uninterrupted and reliable power supply of customers are not favorably met.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a redundancy control system of a parallel machine master control PLC, which uses two sets of PLCs capable of switching in real time to realize uninterrupted power supply.
In order to solve the technical problems, the utility model adopts the technical scheme that:
a redundant control system of a parallel operation master control PLC comprises a generator set controller and a plurality of diesel generator sets in parallel operation control connection, wherein the diesel generator sets are respectively electrically connected with the generator set controller, and the redundant control system is characterized by further comprising an emergency manual mode activation intermediate relay K-EM, a programmable controller PLC1, a programmable controller PLC2, an exchanger and a storage battery;
the switch includes a plurality of Ethernet ports;
the programmable controller PLC1 and the programmable controller PLC2 are respectively and electrically connected with the generating set controller;
an Ethernet port of the programmable controller PLC1 is electrically connected with any Ethernet port of the switch, and an Ethernet port of the programmable controller PLC2 is electrically connected with another Ethernet port of the switch; one end of a normally open contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with a signal input end of the programmable logic controller PLC1, and the other end of the normally open contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with the storage battery;
one end of the normally closed contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with the signal input end of the programmable logic controller PLC2, and the other end of the normally closed contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with the storage battery;
one end of the control coil of the emergency manual mode activation intermediate relay K-EM is electrically connected with the signal output end of the programmable logic controller PLC2, and the other end of the control coil of the emergency manual mode activation intermediate relay K-EM is grounded.
Further, the fault activation device also comprises a fault activation intermediate relay K-CF;
one end of the control coil of the fault activation intermediate relay K-CF is electrically connected with the signal output end of the programmable logic controller PLC2, and the other end of the control coil of the fault activation intermediate relay K-CF is grounded.
Furthermore, the system also comprises a fault reset intermediate relay K-fresh and a fault intermediate relay K-SysC;
one end of a normally closed contact of the fault reset intermediate relay K-fresh is respectively and electrically connected with one end of a normally open contact of the storage battery and the fault activation intermediate relay K-CF, the other end of the normally closed contact of the fault reset intermediate relay K-fresh is respectively electrically connected with the other end of a normally open contact of the fault activation intermediate relay K-CF, one end of the other normally open contact of the fault activation intermediate relay K-CF and one end of a normally open contact of the fault intermediate relay K-SysC, the other end of the other normally open contact of the fault activation intermediate relay K-CF is electrically connected with the other end of one normally open contact of the fault intermediate relay K-SysC and one end of a control coil of the fault intermediate relay K-SysC respectively, and the other end of the control coil of the fault intermediate relay K-SysC is grounded.
Furthermore, one end of the other normally open contact of the fault intermediate relay K-SysC is electrically connected with the storage battery, and the other end of the other normally open contact of the fault intermediate relay K-SysC is electrically connected with one end of the control coil of the emergency manual mode activation intermediate relay K-EM.
Further, a fault reset button SB is also included;
one end of the fault reset button SB is electrically connected with the storage battery, the other end of the fault reset button SB is electrically connected with one end of the control coil of the fault reset intermediate relay K-fresh, and the other end of the control coil of the fault reset intermediate relay K-fresh is grounded.
Further, the voltage of the storage battery is 24V.
The utility model has the beneficial effects that:
the utility model provides a redundancy control system of a parallel machine master control PLC, which comprises a generator set controller, a plurality of diesel generator sets in parallel machine control connection, a programmable controller PLC1, a programmable controller PLC2, an exchanger, a storage battery and a plurality of groups of relays, wherein the programmable controller PLC1 and the programmable controller PLC2 are communicated, when the programmable controller PLC1 is abnormal, the programmable controller PLC2 detects and sends out corresponding signals to the relays, the programmable controller PLC1 is switched to an emergency manual mode through the mutual cooperation of the plurality of groups of relays, the programmable controller PLC2 closes the emergency manual mode to obtain a master control right, and sends signals to the generator set controller to control the diesel generators to continuously operate so as to realize uninterrupted power supply.
Drawings
Fig. 1 is a schematic circuit structure diagram of a redundancy control system of a parallel master control PLC;
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, the redundancy control system of the parallel operation master control PLC of the present invention includes a generator set controller and a plurality of diesel generator sets in parallel operation control connection, wherein the plurality of diesel generator sets are respectively electrically connected to the generator set controller, and further includes an emergency manual mode activation intermediate relay K-EM, a programmable controller PLC1, a programmable controller PLC2, an exchange and a storage battery;
the switch includes a plurality of Ethernet ports;
the programmable controller PLC1 and the programmable controller PLC2 are respectively and electrically connected with the generating set controller;
an Ethernet port of the programmable controller PLC1 is electrically connected with any Ethernet port of the switch, and an Ethernet port of the programmable controller PLC2 is electrically connected with another Ethernet port of the switch; one end of a normally open contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with a signal input end of the programmable logic controller PLC1, and the other end of the normally open contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with the storage battery;
one end of the normally closed contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with the signal input end of the programmable logic controller PLC2, and the other end of the normally closed contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with the storage battery;
one end of the control coil of the emergency manual mode activation intermediate relay K-EM is electrically connected with the signal output end of the programmable logic controller PLC2, and the other end of the control coil of the emergency manual mode activation intermediate relay K-EM is grounded.
From the above description, the beneficial effects of the present invention are:
the utility model provides a redundancy control system of a parallel machine master control PLC, which comprises a generator set controller, a plurality of diesel generator sets in parallel machine control connection, a programmable controller PLC1, a programmable controller PLC2, an exchanger, a storage battery and a plurality of groups of relays, wherein the programmable controller PLC1 and the programmable controller PLC2 are communicated, when the programmable controller PLC1 is abnormal, the programmable controller PLC2 detects and sends out corresponding signals to the relays, the programmable controller PLC1 is switched to an emergency manual mode through the mutual cooperation of the plurality of groups of relays, the programmable controller PLC2 closes the emergency manual mode to obtain a master control right, and sends signals to the generator set controller to control the diesel generators to continuously operate so as to realize uninterrupted power supply.
Further, the fault activation device also comprises a fault activation intermediate relay K-CF;
one end of the control coil of the fault activation intermediate relay K-CF is electrically connected with the signal output end of the programmable logic controller PLC2, and the other end of the control coil of the fault activation intermediate relay K-CF is grounded.
From the above description, when the PLC1 is abnormal, the PLC2 outputs a high level through the signal output terminal, and turns on the fault activation relay K-CF.
Furthermore, the system also comprises a fault reset intermediate relay K-fresh and a fault intermediate relay K-SysC;
one end of a normally closed contact of the fault reset intermediate relay K-fresh is respectively and electrically connected with one end of a normally open contact of the storage battery and the fault activation intermediate relay K-CF, the other end of the normally closed contact of the fault reset intermediate relay K-fresh is respectively electrically connected with the other end of a normally open contact of the fault activation intermediate relay K-CF, one end of the other normally open contact of the fault activation intermediate relay K-CF and one end of a normally open contact of the fault intermediate relay K-SysC, the other end of the other normally open contact of the fault activation intermediate relay K-CF is electrically connected with the other end of one normally open contact of the fault intermediate relay K-SysC and one end of a control coil of the fault intermediate relay K-SysC respectively, and the other end of the control coil of the fault intermediate relay K-SysC is grounded.
As can be seen from the above description, activation of the fault activated intermediate relay K-CF causes the fault intermediate relay K-SysC to also be activated.
Furthermore, one end of the other normally open contact of the fault intermediate relay K-SysC is electrically connected with the storage battery, and the other end of the other normally open contact of the fault intermediate relay K-SysC is electrically connected with one end of the control coil of the emergency manual mode activation intermediate relay K-EM.
As can be seen from the above description, the activation of the fault intermediate relay K-SysC activates the emergency manual mode activation intermediate relay K-EM to be activated, the programmable logic controller PLC1 is switched to the emergency manual mode, and the programmable logic controller PLC2 exits the emergency manual mode to obtain the master control right.
Further, a fault reset button SB is also included;
one end of the fault reset button SB is electrically connected with the storage battery, the other end of the fault reset button SB is electrically connected with one end of the control coil of the fault reset intermediate relay K-fresh, and the other end of the control coil of the fault reset intermediate relay K-fresh is grounded.
As can be seen from the above description, the system resets after the fault reset button SB is pressed, and the programmable logic controller PLC1 can be controlled to regain master control.
Further, the voltage of the storage battery is 24V.
Referring to fig. 1, a first embodiment of the present invention is:
the utility model provides a redundancy control system of a parallel machine master control PLC, which comprises a programmable controller PLC1, a programmable controller PLC2, a switch S1 and a storage battery, wherein the programmable controller PLC1 is connected with the switch S1 through a power supply;
in this embodiment, as shown in fig. 1, the switch S1 includes a plurality of ETHERNET ports ETHERNET; the Ethernet port ETHERNET of the programmable controller PLC1 is electrically connected with any Ethernet port ETHERNET of the switch, and the Ethernet port ETHERNET of the programmable controller PLC2 is electrically connected with another Ethernet port ETHERNET of the switch; the two programmable controllers communicate with each other through an Ethernet port ETHERNET connected with the switch S1;
in the present embodiment, as shown in FIG. 1, it further comprises a fault activated intermediate relay K-CF, an emergency manual mode activated intermediate relay K-EM, a fault intermediate relay K-SysC, a fault reset button SB and a fault reset intermediate relay K-FREset;
one end of a normally open contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with a signal input end I0.0 of the programmable logic controller PLC1, and the other end of the normally open contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with the storage battery;
one end of the normally closed contact of the intermediate relay K-EM activated by the emergency manual mode is electrically connected with the I0.0 end of the signal input end of the programmable logic controller PLC2, and the other end of the normally closed contact of the intermediate relay K-EM activated by the emergency manual mode is electrically connected with the storage battery;
one end of a normally closed contact of the fault reset intermediate relay K-fresh is respectively and electrically connected with one end of a normally open contact of the storage battery and the fault activation intermediate relay K-CF, the other end of the normally closed contact of the fault reset intermediate relay K-fresh is respectively electrically connected with the other end of a normally open contact of the fault activation intermediate relay K-CF, one end of the other normally open contact of the fault activation intermediate relay K-CF and one end of a normally open contact of the fault intermediate relay K-SysC, the other end of the other normally open contact of the fault activation intermediate relay K-CF is electrically connected with the other end of one normally open contact of the fault intermediate relay K-SysC and one end of a control coil of the fault intermediate relay K-SysC respectively, and the other end of the control coil of the fault intermediate relay K-SysC is grounded;
one end of the other normally open contact of the fault intermediate relay K-SysC is electrically connected with the storage battery, the other end of the other normally open contact of the fault intermediate relay K-SysC is electrically connected with one end of the control coil of the emergency manual mode activation intermediate relay K-EM, and the other end of the control coil of the emergency manual mode activation intermediate relay K-EM is grounded;
one end of the fault reset button SB is electrically connected with the storage battery, the other end of the fault reset button SB is electrically connected with one end of a control coil of the fault reset intermediate relay K-fresh, and the other end of the control coil of the fault reset intermediate relay K-fresh is grounded;
one end of a control coil of the fault activation intermediate relay K-CF is electrically connected with a signal output end Q0.0 of the programmable logic controller PLC2, and the other end of the control coil of the fault activation intermediate relay K-CF is grounded;
in this embodiment, the battery is 24V as shown in fig. 1.
The working principle of the redundancy control system of the parallel master control PLC provided by the utility model is as follows:
the storage battery programmable controller PLC1 and the programmable controller PLC2 supply power, and the programmable controller PLC1 and the programmable controller PLC2 monitor the signal states of the storage battery programmable controller PLC1 and the programmable controller PLC2 through the communication of the switch S1 to detect whether the other side runs on line or not;
when the programmable controller PLC1 detects a mains supply voltage loss signal, the programmable controller PLC1 outputs a starting command to the generator set controller, and the diesel generator set is automatically started after receiving the signal;
when the PLC2 does not detect a signal of the PLC1, the communication fault activation intermediate relay K-FC is activated, then the fault intermediate relay K-SysC is activated, the emergency manual mode activates the intermediate relay K-EM, the normally open contact of the intermediate relay K-EM is activated in the emergency manual mode becomes a normally closed contact, the normally closed contact becomes a normally open contact, the programmable controller PLC1 becomes activated in the emergency manual mode, the programmable controller PLC2 becomes closed in the emergency manual mode, and the control system is automatically switched to the programmable controller PLC2 to take over control; the state is operated until manual removal, namely, after the unit is shut down, the PLC1 is recovered to be in a normal main state and the PLC2 is in a normal standby state by pressing a fault reset button SB.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (6)
1. A redundant control system of a parallel operation master control PLC comprises a generator set controller and a plurality of diesel generator sets in parallel operation control connection, wherein the diesel generator sets are respectively electrically connected with the generator set controller, and the redundant control system is characterized by further comprising an emergency manual mode activation intermediate relay K-EM, a programmable controller PLC1, a programmable controller PLC2, an exchanger and a storage battery;
the switch includes a plurality of Ethernet ports;
the programmable controller PLC1 and the programmable controller PLC2 are respectively and electrically connected with the generating set controller;
an Ethernet port of the programmable controller PLC1 is electrically connected with any Ethernet port of the switch, and an Ethernet port of the programmable controller PLC2 is electrically connected with another Ethernet port of the switch; one end of a normally open contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with a signal input end of the programmable logic controller PLC1, and the other end of the normally open contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with the storage battery;
one end of the normally closed contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with the signal input end of the programmable logic controller PLC2, and the other end of the normally closed contact of the intermediate relay K-EM activated in the emergency manual mode is electrically connected with the storage battery;
one end of the control coil of the emergency manual mode activation intermediate relay K-EM is electrically connected with the signal output end of the programmable logic controller PLC2, and the other end of the control coil of the emergency manual mode activation intermediate relay K-EM is grounded.
2. The redundant control system of a parallel master control PLC according to claim 1, further comprising a fault activation intermediate relay K-CF;
one end of the control coil of the fault activation intermediate relay K-CF is electrically connected with a signal output Q0.0 of the programmable logic controller PLC2, and the other end of the control coil of the fault activation intermediate relay K-CF is grounded.
3. The redundant control system of a parallel master PLC according to claim 2, further comprising a fault reset relay K-fresh and a fault relay K-SysC;
one end of a normally closed contact of the fault reset intermediate relay K-fresh is respectively and electrically connected with one end of a normally open contact of the storage battery and the fault activation intermediate relay K-CF, the other end of the normally closed contact of the fault reset intermediate relay K-fresh is respectively electrically connected with the other end of a normally open contact of the fault activation intermediate relay K-CF, one end of the other normally open contact of the fault activation intermediate relay K-CF and one end of a normally open contact of the fault intermediate relay K-SysC, the other end of the other normally open contact of the fault activation intermediate relay K-CF is electrically connected with the other end of one normally open contact of the fault intermediate relay K-SysC and one end of a control coil of the fault intermediate relay K-SysC respectively, and the other end of the control coil of the fault intermediate relay K-SysC is grounded.
4. The redundant control system of a parallel master PLC according to claim 3, wherein one end of the other normally open contact of the fault intermediate relay K-SysC is electrically connected to the secondary battery, and the other end of the other normally open contact of the fault intermediate relay K-SysC is electrically connected to one end of the control coil of the emergency manual mode activation intermediate relay K-EM.
5. The redundancy control system of the parallel master control PLC according to claim 3, further comprising a fault reset button SB;
one end of the fault reset button SB is electrically connected with the storage battery, the other end of the fault reset button SB is electrically connected with one end of the control coil of the fault reset intermediate relay K-fresh, and the other end of the control coil of the fault reset intermediate relay K-fresh is grounded.
6. The redundant control system of a parallel master control PLC according to claim 1, wherein the voltage of the battery is 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123095269.7U CN216411931U (en) | 2021-12-10 | 2021-12-10 | Parallel operation master control PLC's redundant control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123095269.7U CN216411931U (en) | 2021-12-10 | 2021-12-10 | Parallel operation master control PLC's redundant control system |
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| CN216411931U true CN216411931U (en) | 2022-04-29 |
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| CN202123095269.7U Active CN216411931U (en) | 2021-12-10 | 2021-12-10 | Parallel operation master control PLC's redundant control system |
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- 2021-12-10 CN CN202123095269.7U patent/CN216411931U/en active Active
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