CN211670639U - Diesel generating set parallel operation, parallel operation and reverse parallel operation control system - Google Patents
Diesel generating set parallel operation, parallel operation and reverse parallel operation control system Download PDFInfo
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- CN211670639U CN211670639U CN202020573498.1U CN202020573498U CN211670639U CN 211670639 U CN211670639 U CN 211670639U CN 202020573498 U CN202020573498 U CN 202020573498U CN 211670639 U CN211670639 U CN 211670639U
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Abstract
The utility model discloses a diesel generating set parallel operation, grid connection and inverse grid connection control system, which comprises a main grid switch controller, a mains switch, a generator master switch, a plurality of diesel generating sets and a plurality of diesel generating set controllers, wherein the plurality of diesel generating sets are arranged in parallel, and each diesel generating set is connected into a parallel bus through a set breaker; the generator main switch is arranged on the parallel bus; the parallel bus is connected with a mains supply, and the mains supply switch is arranged between the parallel bus and the mains supply; each diesel generating set controller is connected with a set breaker of the corresponding diesel generating set; and the main grid switch controller is respectively connected with the mains supply switch, the generator main switch and the plurality of diesel generating set controllers. The utility model discloses a diesel generating set parallel operation, the control system who is incorporated into the power networks and is incorporated into the power networks conversely can realize a plurality of diesel generating set's parallel operation, the control that is incorporated into the power networks and is incorporated into the power networks conversely.
Description
Technical Field
The utility model relates to a diesel generating set parallel operation, be incorporated into the power networks and anti-control system that is incorporated into the power networks.
Background
At present, when a plurality of diesel generating sets are used in parallel, a proper diesel generating set parallel operation, grid connection and inverse grid connection control system is lacked.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's defect, providing a diesel generating set parallel operation, being incorporated into the power networks and anti-control system that is incorporated into the power networks, the wiring is simple, can realize a plurality of diesel generating set's parallel operation, the control of being incorporated into the power networks and anti-being incorporated into the power networks.
The technical scheme for realizing the purpose is as follows: the utility model provides a diesel generating set parallel operation, control system that is incorporated into power networks and is incorporated into power networks conversely, includes main network switch controller, mains switch, generator master switch, a plurality of diesel generating set and a plurality of diesel generating set controller, wherein:
the plurality of diesel generator sets are arranged in parallel, and each diesel generator set is connected into a parallel bus through a unit breaker;
the generator main switch is arranged on the parallel bus;
the parallel bus is connected with a mains supply, and the mains supply switch is arranged between the parallel bus and the mains supply;
the diesel generating set controllers and the diesel generating sets are arranged in a one-to-one correspondence mode, and each diesel generating set controller is connected with a set breaker of the corresponding diesel generating set;
and the main grid switch controller is respectively connected with the mains supply switch, the generator main switch and the plurality of diesel generating set controllers.
In the control system for parallel operation, parallel operation and inverse parallel operation of the diesel generating set, the main grid switch controller adopts an AGC246 controller.
The diesel generating set controller adopts an AGC242 controller.
The utility model discloses a diesel generating set parallel operation, the control system who is incorporated into the power networks and is anti-incorporated into the power networks, the wiring is simple, can realize a plurality of diesel generating set's parallel operation, the control of being incorporated into the power networks and anti-incorporated into the power networks.
Drawings
Fig. 1 is the structure schematic diagram of the control system for parallel operation, parallel operation and inverse parallel operation of the diesel generating set of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following detailed description is provided with reference to the accompanying drawings:
referring to fig. 1, a control system for parallel operation, parallel operation and reverse parallel operation of diesel generating sets according to the preferred embodiment of the present invention includes a main grid switch controller 1, a main power switch MB, a generator main switch TB, three diesel generating sets DG1, DG2, DG3 and three diesel generating set controllers 2.
The three diesel generator sets DG1, DG2 and DG3 are arranged in parallel, and the diesel generator set DG1 is connected to the parallel bus 20 through a set breaker GB 1; the diesel generator set DG2 is connected into the parallel bus 20 through a set breaker GB 2; the diesel generator set DG3 is connected into the parallel bus 20 through a set breaker GB 3.
The generator main switch TB is arranged on the parallel bus 20; the parallel bus 20 is connected to the commercial power 10, and a commercial power switch MB is arranged between the parallel bus 20 and the commercial power 10.
The generator main switch TB is connected to the mains supply 10, and a mains supply switch MB is arranged between the generator main switch TB and the mains supply 10; the three diesel generating set controllers 2 and the three diesel generating sets are arranged in a one-to-one correspondence mode, and each diesel generating set controller 2 is connected with a set breaker of the corresponding diesel generating set; the main grid switch controller 1 is respectively connected with a mains supply switch MB, a generator main switch TB and a plurality of diesel generating set controllers 1.
The main grid switch controller 1 employs an AGC246 controller. The diesel generator set controller 2 employs an AGC242 controller.
The utility model discloses a diesel generating set parallel operation, the control system who is incorporated into the power networks and anti-incorporated into the power networks, when using:
1. diesel generator set related control
The diesel generating set controller 2 is an AGC242 controller and has a parallel operation function.
1.1 in an automatic state, the diesel generator set system adopts a distributed control mode and adopts a frequency and voltage synchronous mode to be connected in parallel, the parallel control system communicates the control screen of the whole system through communication, and automatically adjusts the frequency and voltage of the generator set, so that the frequency and voltage of the generator set are not influenced by the increase and decrease of loads and are kept at a set value. The voltage and the frequency are automatically adjusted to set values after the generator sets are started, the generator set which reaches the set values in the system firstly is put into the parallel bus 20, the rest generator sets detect the voltage, the frequency and the phase of the upper port and the lower port of the parallel switch respectively, the frequency and the voltage of the engine are automatically controlled to track, after a certain window set value and a certain synchronization time are reached, the switch is commanded to be closed, and the automatic synchronization process is finished. When the diesel generating set needs to be stopped, after time delay confirmation, the whole generating set carries out the stopping process, and when the control system confirms that the power of the generating set is lower than a set value, the control system automatically disconnects the circuit breaker and the generating set is disconnected. The generator set control system automatically carries out a cooling shutdown procedure and carries out the next cycle after shutdown.
1.And 2, manually disconnecting the generator sets in a manual state, allowing all the generator sets running on line to be manually disconnected, triggering corresponding generator set stop buttons in the parallel system, and carrying out a load transfer process by the control system firstly, so that the power of the disconnected generator sets is gradually reduced, and after a set value is reached, automatically disconnecting the parallel switch and disconnecting the generator sets. The generator set control system automatically carries out a cooling shutdown procedure and carries out the next cycle after shutdown.
The method comprises the following steps that manual emergency shutdown is carried out, when a running generator set has a shutdown fault or presses an emergency shutdown button, a parallel control system immediately disconnects a corresponding generator set circuit breaker and controls the generator set to be shut down, if the fault or the emergency shutdown occurs at the side of the parallel system and the generator set has no fault, the generator set carries out a cooling shutdown process, next circulation is carried out after shutdown, and alarm information is displayed on a control screen of the parallel system; if the sudden stop or the fault occurs at the side of the generator set, the generator set is immediately stopped, and the alarm is simultaneously displayed on a control screen of the generator set and a control screen of the parallel operation system.
The parallel operation of the manual state, the setting of the generator control screen in the manual state, the setting of the parallel system in the manual state, the parallel system not receiving the external starting signal control, by manual control. When the generator set needs to be started, the generator set is manually started, a switch-on or switch-in button is started at the parallel system, the parallel system automatically synchronizes and automatically switches on, and the power is automatically distributed after the parallel system is connected in parallel.
In the manual state shutdown process, the system cannot be automatically shut down when working in the mode, firstly, the unit is disconnected, after a shutdown or disconnection button is triggered at the parallel system, the corresponding unit automatically transfers the load, when the load is reduced to a set value, the breaker is automatically disconnected, the disconnection of the unit is completed, and at the moment, the unit continues to operate and needs to be manually shut down.
2. Describing a grid-connected mode:
2.1 the generator set has three modes: off-manual-automatic-test.
To select a mode, the corresponding mode button is pressed directly and the light on the mode button is illuminated.
2.1.1 OFF mode
The starter motor, the generator main switch TB are closed/opened, the fuel electromagnetic valve output and the like are not operated.
The generator set cannot be started. The controller will not respond to the operation of the "start", "stop", "generator master switch on/off" buttons.
The mains switch MB behavior depends on the following parameter settings:
parameter name commercial switch off condition, there are two options:
MAINSFAIL: when the power is off, the mains switch MB is turned off. After the mains supply is recovered to normal, the mains supply switch MB is closed after the mains supply switch is closed and delayed.
GENRUN: when there is a power outage, the mains switch remains closed.
2.1.2 Manual mode
1) 'Start' button
When the start button is pressed, the generator set is started.
2) 'Generator main switch on/off' button
When the 'generator main switch on/off' button is pressed
If the generator voltage exceeds the limit (adjusted in the set of generator protection settings), the generator master switch will not respond to the "generator master switch on/off" button
a) The main grid switch controller 1, i.e. the AGC246 controller, closes the generator main switch to the no-voltage bus.
b) The AGC246 controller begins synchronization. When the synchronous condition is reached, the generator master switches are closed and remain running in parallel.
c) If the generator master switch is closed, soft unloading is done to the mains and then the generator master switch is opened.
3) 'Mains supply switch on/off' button
When the "commercial power switch on/off" button is pressed
a) The AGC246 controller closes the mains switch to the no-voltage bus (even if the mains voltage is exceeded).
b) The AGC246 controller begins synchronization. When the synchronization condition is reached, the mains switches are closed and remain running in parallel.
c) If the mains switch is in the closed position, the soft discharge is made to the generator and the mains switch is then disconnected.
4) Stop button
When the "stop" button is pressed
a) When the parallel operation is carried out, the load is transferred to the commercial power, the main switch of the generator is disconnected, and the generator enters a cooling state and is shut down.
b) When the engine runs at no load, a cooling program is entered and then the engine is stopped.
c) Resulting in immediate engine shutdown in the cold condition.
2.1.3AUT automatic mode
AMF
1) Confirming power failure
When the mains fails, the AGC246 controller turns off the mains switch.
a) After a start delay, the AGC246 controller starts the genset.
b) If power is restored during startup, AGC246 controller recloses the mains switch after a mains switch closure delay and the genset is stopped.
2) The AGC246 controller closes the generator master switch when the genset reaches the minimum speed requirement and the generator voltage is within a normal range (adjusted in the set of generator protection settings). If the generator voltage exceeds the maximum settling time limit, the AGC246 controller will alarm and stop the generator set.
3) After the commercial power is recovered:
a) after the mains power closing delay, the AGC246 controller synchronizes with the mains power, closes the mains power switch and unloads the generator set.
b) After the breaker overlap delay, the AGC246 controller opens the generator main switch.
c) The genset cools and stops.
2.1.4 test mode
The setting of the parameter "exit test" will affect the following test mode.
The parameter "Exit test" is set to manual
1) When the test mode is selected, the generator set is automatically started and operates in an idle mode.
2) In case of mains supply interruption, the generator set is on-load
a) Power failure or b) pressing the mains switch on/off button
When power is off or the mains switch is closed/open: the AGC246 controller opens the mains switch and after a delay the AGC246 controller closes the generator main switch.
When the commercial power is recovered, the generator set keeps island operation!
3) Loading a generator set without interrupting power supply
a) Pressing generator master switch on/off
b) Switching value input load test closure
In this case, the AGC246 controller synchronizes the genset to the utility, closes the generator main switch, runs in parallel for the breaker overlap time, and then opens the utility switch.
When the commercial power is recovered, the generator set keeps island operation!
4) To stop the generator set, a mode other than the test mode is selected
The parameter "Exit test" is set to AUTO
And when the test mode is selected, the generator set runs in an idle load mode.
During power failure, the AGC246 controller disconnects the mains switch.
After a delay, the AGC246 controller closes the generator main switch.
When the power is restored:
a) after mains recovery, the AGC246 controller starts to resynchronize with mains and closes the mains switch.
b) The generator set keeps parallel operation within the circuit breaker overlapping time, and a main switch of the generator is disconnected and the generator set keeps no-load operation.
To stop the genset, a mode other than test is selected.
To sum up, the utility model discloses a diesel generating set parallel operation, the control system who is incorporated into the power networks and anti-incorporated into the power networks, the wiring is simple, can realize a plurality of diesel generating set's parallel operation, the control of being incorporated into the power networks and anti-incorporated into the power networks.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (3)
1. The utility model provides a diesel generating set parallel operation, control system that is incorporated into power networks and is incorporated into power networks conversely, its characterized in that includes main net switch controller, mains switch, generator master switch, a plurality of diesel generating set and a plurality of diesel generating set controller, wherein:
the plurality of diesel generator sets are arranged in parallel, and each diesel generator set is connected into a parallel bus through a unit breaker;
the generator main switch is arranged on the parallel bus;
the parallel bus is connected with a mains supply, and the mains supply switch is arranged between the parallel bus and the mains supply;
the diesel generating set controllers and the diesel generating sets are arranged in a one-to-one correspondence mode, and each diesel generating set controller is connected with a set breaker of the corresponding diesel generating set;
and the main grid switch controller is respectively connected with the mains supply switch, the generator main switch and the plurality of diesel generating set controllers.
2. The parallel-in, parallel-in and reverse parallel-in control system of the diesel generator set according to claim 1, wherein the main grid switch controller adopts an AGC246 controller.
3. The parallel-in, parallel-in and reverse parallel-in control system of the diesel generating set according to claim 1, wherein the diesel generating set controller adopts an AGC242 controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020573498.1U CN211670639U (en) | 2020-04-17 | 2020-04-17 | Diesel generating set parallel operation, parallel operation and reverse parallel operation control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020573498.1U CN211670639U (en) | 2020-04-17 | 2020-04-17 | Diesel generating set parallel operation, parallel operation and reverse parallel operation control system |
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| CN211670639U true CN211670639U (en) | 2020-10-13 |
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| CN202020573498.1U Active CN211670639U (en) | 2020-04-17 | 2020-04-17 | Diesel generating set parallel operation, parallel operation and reverse parallel operation control system |
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2020
- 2020-04-17 CN CN202020573498.1U patent/CN211670639U/en active Active
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