CN109672376B - Generator set and control unit and method - Google Patents
Generator set and control unit and method Download PDFInfo
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- CN109672376B CN109672376B CN201910087337.3A CN201910087337A CN109672376B CN 109672376 B CN109672376 B CN 109672376B CN 201910087337 A CN201910087337 A CN 201910087337A CN 109672376 B CN109672376 B CN 109672376B
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Abstract
The invention provides a generator set, a control unit and a method, wherein the generator set control unit comprises the following modules: a voltage signal acquisition module: acquiring voltage detection signals of a plurality of power supply circuits: a current signal acquisition module: acquiring current detection signals of a plurality of power supply circuits; the power supply signal processing module: processing the voltage detection signal and the current detection signal to obtain a power supply power signal; a circuit adjusting module: and comparing the power supply power signal with a set rated total power value, and enabling one or more power supply circuits in the plurality of power supply circuits to unload switching-off or switching-on loading. The invention improves the hardware facilities of the existing controller, cancels a commercial power detection port, increases the voltage and current detection of one three-phase power supply, and ensures that two power supplies can be monitored simultaneously through program setting.
Description
Technical Field
The invention relates to the field of generators, in particular to a generator set, a control unit and a method, and particularly relates to a single-layer and double-layer magnetic field orthogonal winding permanent magnet synchronous generator set, a control unit and a method.
Background
The existing controller for the diesel generator set mainly detects one path of three-phase power of the generator independently and one path of three-phase power of the generator and commercial power; the two controllers can only monitor one path of power supply of the generator set, and cannot meet the use requirement of the single-layer and double-layer magnetic field orthogonal winding permanent magnet synchronous generator set.
Patent document CN109149763A provides a self-starting intelligent control system for a generator set, which includes a programmable logic controller; the programmable logic controller is connected with the generating set controller; the generating set controller is connected with the generating set; the programmable logic controller is used for outputting an action signal to the generator set controller according to the one-way commercial power detection result, the three-phase commercial power detection result, whether the passive dry node is accessed or not and the DCS trigger dry node, and the generator set controller controls the generator set to be started after receiving the action signal. According to the patent document, a plurality of interfaces are reserved for being used by a client in any wiring mode, the self-starting system can adapt to various self-starting states, the use of the client is facilitated, and the post-maintenance is easy. However, the patent document still depends on the commercial power detection result, and cannot be applied to a single-layer and double-layer magnetic field orthogonal winding permanent magnet synchronous generator set.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a generator set, a controller thereof and a working method.
The generator set control unit provided by the invention comprises a generator operation control module, wherein the generator operation control module comprises the following modules:
a voltage signal acquisition module: acquiring voltage monitoring signals of a plurality of power generation power supply circuits:
a current signal acquisition module: acquiring current monitoring signals of a plurality of power generation power supply circuits;
the power supply signal processing module: processing the voltage monitoring signal and the current monitoring signal to obtain a power signal of a power generation source;
a circuit adjusting module: and comparing the power signal of the power generation power supply with the set total power value, and unloading the switching-off or switching-on loading of one or more power generation power supply circuits in the plurality of power generation power supply circuits.
Preferably, in the power signal processing module, according to waveforms of the current monitoring signals and waveforms of the voltage monitoring signals corresponding to the plurality of power generation power circuits, a waveform phase difference and an effective value, and active power, reactive power and apparent power of the power generation power in the power generation power circuits are calculated;
the plurality of power generation power supply circuits comprise a first power supply circuit and a second power supply circuit, and the second power supply circuit is enabled to carry out switching-off unloading or switching-on loading in the circuit adjusting module.
Preferably, the system further comprises a unit starting control module, wherein the unit starting control module comprises the following modules:
a motor start module: enabling the starting motor to be electrified to work and driving the engine and the generator in sequence;
the generator starts the judging module: judging whether the generator is started successfully; if yes, executing a generator operation control module; if not, executing a starting frequency judging module;
a starting frequency judging module: and after the set interval time, returning to the generator starting judgment module and counting the returning times until the set returning times are reached, and generating an alarm shutdown signal.
Preferably, in the motor starting module, the start-up delay and the preheating delay are sequentially executed to heat the input air of the engine, the accelerator relay is made to output to enable the accelerator electromagnetic valve to be powered on to work, the starting delay is executed, and the starting motor is made to be powered on to work.
Preferably, the generator start judging module comprises any one or all of the following modules:
a frequency condition judgment module: acquiring a voltage waveform curve signal of a power generation power supply in a power generation power supply circuit, acquiring a real-time power supply frequency value according to the voltage waveform curve signal, and judging whether the generator is started successfully or not according to the real-time power supply frequency value and a set power supply frequency value;
a rotating speed condition judging module: and acquiring an engine rotating speed signal from a rotating speed sensor, and judging whether the generator is started successfully according to the engine rotating speed signal and a set rotating speed value.
Preferably, the system also comprises a unit shutdown control module, wherein the unit shutdown control module comprises any one or all of the following modules:
an immediate shutdown module: the power generation power circuit is enabled to directly unload the brake separating, the shutdown delay is executed, and the accelerator relay is enabled to stop outputting;
a cooling shutdown module: and unloading the power generation power supply circuit according to a set rule, and after cooling delay is executed, stopping the power generation power supply circuit and stopping the output of the accelerator relay.
Preferably, the engine operating parameter monitoring module is further included: acquiring any one or more of the following signals: the engine comprises an engine rotating speed signal, an engine cylinder head temperature signal, an engine oil pressure signal, a cooling liquid detection signal and an air inlet detection signal.
The invention also provides a generator set, which comprises a first power supply circuit, a second power supply circuit and a controller, wherein the controller comprises the generator set control unit.
The first power circuit is provided with a first generator, a current transformer CT1 and an alternating current contactor KM 1; the second power supply circuit is provided with a second generator, a current transformer CT2 and an alternating current contactor KM 2;
the controller also comprises a first generating voltage detection port, a first generating current detection port, a second generating voltage detection port and a second generating current detection port;
the first generation voltage detection port is connected to the first power supply circuit, the first generation current detection port is connected to the current transformer CT1, the second generation voltage detection port is connected to the second power supply circuit, and the second generation current detection port is connected to the current transformer CT 2.
Preferably, the system also comprises an engine, a starting motor, a charger, a sensor, a relay, a controller power supply, an air quality switch S1 and a water level switch SB 1; the engine comprises an accelerator electromagnetic valve and a fuel pump;
the sensor comprises a rotating speed sensor, a temperature sensor and a pressure sensor;
the controller comprises a relay output port, a switching value input port, a sensor port and a communication port;
the relay output port comprises an accelerator relay port, a starting motor relay port, a first power supply switching-on and switching-off relay port and a second power supply switching-on and switching-off relay port;
the sensor port comprises a rotating speed sensor port, a temperature sensor port and a pressure sensor port;
the communication port includes any one or more of the following: RS485 communication port, RS232 port, CAN communication port, USB communication port.
The invention also provides a generator set control method, which comprises a generator operation control step, wherein the generator operation control step comprises the following steps:
a voltage signal acquisition step: acquiring voltage monitoring signals of a plurality of power generation power supply circuits:
a current signal acquisition step: acquiring current monitoring signals of a plurality of power generation power supply circuits;
power supply signal processing: processing the voltage monitoring signal and the current monitoring signal to obtain a power signal of a power generation source;
a circuit adjusting step: and comparing the power signal of the power generation power supply with the set total power value, and unloading the switching-off or switching-on loading of one or more power generation power supply circuits in the plurality of power generation power supply circuits.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention improves the hardware facilities of the existing controller, cancels a commercial power detection port, increases the voltage and current detection of one three-phase power supply, and ensures that two power supplies can be monitored simultaneously through program setting;
2. through carrying out statistics on the parameters of the two power supplies, the voltage and current waveforms are utilized to carry out parameter calculation, and the fault alarm setting is facilitated.
3. When the total power exceeds a set value, the controller can automatically unload and open the auxiliary circuit, and when the total power is restored to the range of the capability of the engine, the auxiliary circuit can be automatically switched on and loaded, so that the power supply stability of the main circuit is ensured.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of a generator set according to the present invention;
FIG. 2 is a flow chart of a generator set control method;
FIG. 3 is an illustration of ports # 1 through 27 on the controller in an embodiment;
fig. 4 is an illustration of ports 28 through 46 on the controller in an embodiment.
The figures show that:
Starting motor 3 pressure sensor 10
Charger 4 RS485 communication port 11
Control panel power supply 5 RS232 port 12
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The generator set provided by the invention comprises a first power circuit, a second power circuit and a controller, wherein the first power circuit is provided with a first generator 1, a current transformer CT1 and an alternating current contactor KM 1; the second power circuit is provided with a second generator 2, a current transformer CT2 and an alternating current contactor KM 2. In addition, the generator set also comprises an engine, a starting motor 3, a charger 4, a sensor, a relay 15, a controller power supply 5, an air quality switch S1 and a water level switch SB 1. The engine comprises an accelerator electromagnetic valve 6 and a fuel pump 7, and the sensors comprise a rotating speed sensor 8, a temperature sensor 9 and a pressure sensor 10
Correspondingly, a first generating voltage detection port, a first generating current detection port, a second generating voltage detection port and a second generating current detection port are arranged on the controller; the first generation voltage detection port is connected to the first power supply circuit, the first generation current detection port is connected to the current transformer CT1, the second generation voltage detection port is connected to the second power supply circuit, and the second generation current detection port is connected to the current transformer CT 2. In addition, the controller is also provided with a relay output port, a switching value input port, a sensor port and a communication port. The relay output port comprises an accelerator relay port, a starting motor relay port, a first power supply switching-on and switching-off relay port and a second power supply switching-on and switching-off relay port; the sensor port comprises a rotating speed sensor port, a temperature sensor port and a pressure sensor port; the communication port includes any one or more of the following: RS485 communication port 11, RS232 port 12, CAN communication port 13, USB communication port 14.
As shown in fig. 1, 3 and 4, the connection relationship of the main components in the generator set is as follows: the first power supply circuit and the second power supply circuit are respectively provided with a first power supply opening and closing relay K2 and a second power supply opening and closing relay K3, and the two power supply opening and closing relays are respectively connected to a first power supply opening and closing relay port and a second power supply opening and closing relay port on the controller; the first power supply circuit and the second power supply circuit are respectively provided with a FUSE FUSE1 and a FUSE FUSE 2; the accelerator solenoid valve 6 is connected to an accelerator relay port through an accelerator relay, the starter motor 3 is connected to a starter motor relay port through a starter motor relay, and the starter motor 3 is provided with an electronic speed switch ASS. The controller power supply 5 is also provided with a FUSE3 and a switch QA on a line connected with a working power supply access port on the controller; the charger 4 is used for charging the controller power supply 5, the W/L end of the charger 4 is connected with the excitation power supply output port of the controller, and the positive pole of the charger 4 is provided with a FUSE FUSE4 on a circuit connected with the controller; the rotating speed sensor 8 comprises a magnetic sensor and is connected to a rotating speed sensor port; other switch structures or sensors are also connected to corresponding ports on the controller.
The controller contains generating set the control unit, the function that generating set the control unit contained mainly has: voltage detection, current detection, analog quantity input, switching value input, relay output and the like. The controller in the generator set mainly has the following functions: the method comprises the following steps of starting and stopping control of the engine, monitoring of electrical parameters of the generator and monitoring of operating parameters of the engine. The start control of the engine includes: the engine has the functions of air inlet preheating, engine oil preheating, oil pre-pumping, starting and turning, power output of an accelerator electromagnetic valve and the like; monitoring of electrical generator parameters includes: generator voltage, current, frequency and power monitoring; the operating parameters of the engine include: engine speed, engine cylinder head temperature, engine oil pressure, coolant sensing, intake sensing, etc.
Specifically, the generator set control unit mainly comprises the following modules:
1) the unit starts control module, and unit starts control module contains the following module: a motor start module: enabling the starting motor to be electrified to work and driving the engine and the generator in sequence; the generator starts the judging module: judging whether the generator is started successfully; if yes, executing a generator operation control module; if not, executing a starting frequency judging module; a starting frequency judging module: and after the set interval time, returning to the generator starting judgment module and counting the returning times until the set returning times are reached, and generating an alarm shutdown signal. Preferably, in the motor starting module, the start-up delay and the preheating delay are sequentially executed to heat the input air of the engine, the accelerator relay is made to output to enable the accelerator electromagnetic valve to be powered on to work, the starting delay is executed, and the starting motor is made to be powered on to work. Preferably, the generator start judging module comprises any one or all of the following modules: a frequency condition judgment module: acquiring a voltage waveform curve signal of a power generation power supply in a power generation power supply circuit, acquiring a real-time power supply frequency value according to the voltage waveform curve signal, and judging whether the generator is started successfully or not according to the real-time power supply frequency value and a set power supply frequency value; a rotating speed condition judging module: and acquiring an engine rotating speed signal from a rotating speed sensor, and judging whether the generator is started successfully according to the engine rotating speed signal and a set rotating speed value.
2) The generator operation control module comprises the following modules: a voltage signal acquisition module: acquiring voltage monitoring signals of a plurality of power generation power supply circuits: a current signal acquisition module: acquiring current monitoring signals of a plurality of power generation power supply circuits; the power supply signal processing module: processing the voltage monitoring signal and the current monitoring signal to obtain a power signal of a power generation source; a circuit adjusting module: and comparing the power signal of the power generation power supply with the set total power value, and unloading the switching-off or switching-on loading of one or more power generation power supply circuits in the plurality of power generation power supply circuits. Preferably, in the power signal processing module, according to waveforms of the current monitoring signals and waveforms of the voltage monitoring signals corresponding to the plurality of power generation power circuits, a waveform phase difference and an effective value, and active power, reactive power and apparent power of the power generation power in the power generation power circuits are calculated; the plurality of power generation power supply circuits comprise a first power supply circuit and a second power supply circuit, and the second power supply circuit is enabled to carry out switching-off unloading or switching-on loading in the circuit adjusting module. In practical applications, the power generation power circuit may be located in advance, for example, the first power circuit is located as a main power circuit, and the second power circuit is located as an auxiliary power circuit.
3) The unit shutdown control module comprises any one or all of the following modules: an immediate shutdown module: the power generation power circuit is enabled to directly unload the brake separating, the shutdown delay is executed, and the accelerator relay is enabled to stop outputting; a cooling shutdown module: and unloading the power generation power supply circuit according to a set rule, and after cooling delay is executed, stopping the power generation power supply circuit and stopping the output of the accelerator relay.
In addition, the generator set control unit also comprises an engine operation parameter monitoring module: acquiring any one or more of the following signals: the engine comprises an engine rotating speed signal, an engine cylinder head temperature signal, an engine oil pressure signal, a cooling liquid detection signal and an air inlet detection signal.
As shown in fig. 2, the present invention further provides a generator set control method, which mainly comprises the following steps:
1) the unit starting control step comprises the following steps: a motor starting step: enabling the starting motor to be electrified to work and driving the engine and the generator in sequence; a generator starting judgment step: judging whether the generator is started successfully; if yes, executing a generator operation control step; if not, executing a starting frequency judging step; a starting frequency judging step: and after the set interval time, returning to the step of judging the starting of the generator and counting the number of returning times until the set number of returning times is reached, and generating an alarm shutdown signal. Preferably, in the step of starting the motor, the start-up delay and the preheating delay are sequentially executed to heat the input air of the engine, the throttle relay is made to output to enable the throttle electromagnetic valve to be powered on to work, the start delay is executed, and the start motor is made to be powered on to work. Preferably, the generator start-up determining step includes any or all of the following steps: a frequency condition judging step: acquiring a voltage waveform curve signal of a power generation power supply in a power generation power supply circuit, acquiring a real-time power supply frequency value according to the voltage waveform curve signal, and judging whether the generator is started successfully or not according to the real-time power supply frequency value and a set power supply frequency value; judging the rotating speed condition: and acquiring an engine rotating speed signal from a rotating speed sensor, and judging whether the generator is started successfully according to the engine rotating speed signal and a set rotating speed value.
2) The generator operation control step comprises the following steps: a voltage signal acquisition step: acquiring voltage monitoring signals of a plurality of power generation power supply circuits: a current signal acquisition step: acquiring current monitoring signals of a plurality of power generation power supply circuits; power supply signal processing: processing the voltage monitoring signal and the current monitoring signal to obtain a power signal of a power generation source; a circuit adjusting step: and comparing the power signal of the power generation power supply with the set total power value, and unloading the switching-off or switching-on loading of one or more power generation power supply circuits in the plurality of power generation power supply circuits. Preferably, in the power signal processing step, a waveform phase difference and an effective value, and active power, reactive power and apparent power of the power generation source in the power generation source circuit are calculated according to waveforms of the current monitoring signal and the voltage monitoring signal corresponding to the plurality of power generation source circuits; the power generation power supply circuits comprise a first power supply circuit and a second power supply circuit, and in the circuit adjusting step, the second power supply circuit is enabled to carry out switching-off unloading or switching-on loading. In practical applications, the power generation power circuit may be located in advance, for example, the first power circuit is located as a main power circuit, and the second power circuit is located as an auxiliary power circuit.
3) The method comprises a unit shutdown control step, wherein the unit shutdown control step comprises any one or all of the following steps: and (3) immediately stopping the machine: the power generation power circuit is enabled to directly unload the brake separating, the shutdown delay is executed, and the accelerator relay is enabled to stop outputting; a cooling shutdown step: and unloading the power generation power supply circuit according to a set rule, and after cooling delay is executed, stopping the power generation power supply circuit and stopping the output of the accelerator relay.
In addition, the generator set control unit also comprises an engine operation parameter monitoring step: acquiring any one or more of the following signals: the engine comprises an engine rotating speed signal, an engine cylinder head temperature signal, an engine oil pressure signal, a cooling liquid detection signal and an air inlet detection signal.
Preferred embodiments:
the controller is applied to the single-layer and double-layer magnetic field orthogonal winding permanent magnet synchronous generator set, and comprises a power supply port, a first path of power generation three-phase voltage detection port, a second path of power generation three-phase voltage detection port, a first path of power generation three-phase current detection port, a second path of power generation three-phase current detection port, a relay output port, a switching value input port, an analog value input port, a rotating speed sensor port, an RS485 communication port, a CAN communication port and a USB communication port.
The starting process comprises the following steps:
(1) the storage battery is connected to a power switch, the power switch is connected to a controlled power supply, and the controller is powered on.
(2) The relay port K1 program is set as the throttle output, the port is connected with the throttle electromagnetic valve of the engine and the peripheral equipment of the oil pump, the relay port K2 program is set as the starting output, the port is connected with the starting motor of the engine, the relay port K8 is set as the air preheating setting, the port is connected with the fuel oil preheating port of the engine, and the relevant parameters such as the starting delay, the preheating delay, the starting success condition, the starting failure interval time, the starting times, the safe operation time and the like are set through the internal program of the controller.
(3) When the controller panel is started, the starting time delay and the preheating time delay are sequentially carried out, at the moment, the input air of the engine is heated, the accelerator relay is output, at the moment, the accelerator electromagnetic valve is firstly electrified to work, the starting time delay is carried out, and at the moment, the starting motor starts to be electrified to work.
(4) After a starting motor works, starting to run through a generator connected with a bearing, cutting a magnetic induction line, and generating electricity externally, wherein a voltage detection port of a controller has power supply input, so that the controller obtains a voltage waveform curve of the power supply, analyzes the curve, and obtains an effective value as a current voltage value; and if the starting is successful, the generator set enters a safe operation state, and after the delay, the generator set enters a generator set operation monitoring state.
The unit operation process:
(1) the connection of an external load can be controlled by setting a relay port as switching-on and switching-off output in the running state of the unit, because the unit outputs two independent power supplies, the relay port K3 needs to be set as a first power supply switching-on and switching-off, the relay port K4 needs to be set as a second power supply switching-on and switching-off, the two independent power supplies are controlled, after the load is connected, the current transformer used externally is connected to the current detection ports of the two power supplies, a controller can obtain the current waveform diagrams of the two power supplies, and the active power, the reactive power and the apparent power of the power supplies can be obtained by calculating the phase difference and the effective value by combining the voltage waveforms, so that the voltage-current power frequency of each power supply is monitored, the total power of the two power supplies can be monitored by program setting to ensure the work of an engine, and meanwhile, one, the other path is auxiliary, when the total power exceeds a set value, the controller can automatically unload and open the auxiliary circuit, and when the total power is recovered to the engine capacity range, the auxiliary circuit can be automatically switched on and loaded, so that the power supply stability of the main circuit is ensured.
(2) In the operation of the generator set, the detection of the temperature of a generator winding, the temperature of an engine cylinder head, the internal environment temperature of the generator set and engine oil, air intake and cooling liquid of an engine is required, parameters such as temperature and the like can adopt analog quantity, the temperature value is converted into a resistance value to be detected, and other parameters can be detected by setting a switching value.
The shutdown process:
(1) when the unit is ready to be shut down, the load is first unloaded; because the generator set generates a large amount of heat in operation, the generator set can be selected to be cooled to stop or stopped immediately, if the generator set is stopped immediately, the controller can directly carry out brake-separating operation, the shutdown delay is started, the accelerator relay stops outputting, finally, the engine stops working, and the generator stops outputting; the cooling shutdown can need to set cooling delay, the shutdown controller can also carry out automatic brake-separating operation, cooling delay is started, the shutdown delay is started after the delay is finished, the accelerator relay stops outputting, finally the engine stops working, and the generator stops outputting.
(2) And turning off the power switch of the storage battery, and stopping the operation of the controller.
Those skilled in the art will appreciate that, in addition to implementing the systems, apparatus, and various modules thereof provided by the present invention in purely computer readable program code, the same procedures can be implemented entirely by logically programming method steps such that the systems, apparatus, and various modules thereof are provided in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system, the device and the modules thereof provided by the present invention can be considered as a hardware component, and the modules included in the system, the device and the modules thereof for implementing various programs can also be considered as structures in the hardware component; modules for performing various functions may also be considered to be both software programs for performing the methods and structures within hardware components.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. A generator set is characterized by comprising a first power supply circuit, a second power supply circuit and a controller, wherein the controller comprises a generator set control unit;
the generator set control unit comprises a generator operation control module, and the generator operation control module comprises the following modules:
a voltage signal acquisition module: acquiring voltage monitoring signals of a plurality of power generation power supply circuits:
a current signal acquisition module: acquiring current monitoring signals of a plurality of power generation power supply circuits;
the power supply signal processing module: processing the voltage monitoring signal and the current monitoring signal to obtain a power signal of a power generation source;
a circuit adjusting module: comparing the power signal of the power generation power supply with a set total power value, and unloading switching-off or switching-on loading of one or more power generation power supply circuits in the plurality of power generation power supply circuits;
the first power circuit is provided with a first generator (1), a current transformer CT1 and an alternating current contactor KM 1; the second power supply circuit is provided with a second generator (2), a current transformer CT2 and an alternating current contactor KM 2;
the controller also comprises a first generating voltage detection port, a first generating current detection port, a second generating voltage detection port and a second generating current detection port; the first generating voltage detection port and the second generating voltage detection port are three-phase voltage detection ports; the first generating current detection port and the second generating current detection port are three-phase current detection ports;
the first generating voltage detection port is connected to the first power circuit, the first generating current detection port is connected to the current transformer CT1, the second generating voltage detection port is connected to the second power circuit, and the second generating current detection port is connected to the current transformer CT 2;
the connection of an external load is controlled by setting a relay port as switching-on and switching-off output in a unit running state, because the unit is a unit with two independent power supply outputs, a first power supply switching-on and switching-off is set for the relay port K3, a second power supply switching-on and switching-off is set for the relay port K4, the two independent power supplies are controlled, after the load is connected, the current detection ports of the two power supplies are connected through an externally used current transformer, a controller obtains current waveform diagrams of the two power supplies, and obtains active power, reactive power and apparent power of the power supplies by combining voltage waveforms and calculating phase difference and effective value, thereby monitoring the voltage and current power frequency of each power supply, monitoring the total power of the two power supplies by program setting to ensure the work of an engine, and simultaneously setting one power supply of the two power supplies as a main circuit, the other path is auxiliary, when the total power exceeds a set value, the controller automatically unloads and opens the auxiliary circuit, and when the total power is recovered to the engine capacity range, the auxiliary circuit automatically closes and loads to ensure the power supply stability of the main circuit;
the generator set is a single-layer and double-layer magnetic field orthogonal winding permanent magnet synchronous generator set.
2. The generator set of claim 1, further comprising an engine, a starter motor (3), a charger (4), a sensor, a relay (15), a controller power supply (5), an air quality switch S1, and a water level switch SB 1; the engine comprises a throttle electromagnetic valve (6) and a fuel pump (7);
the sensor comprises a rotating speed sensor (8), a temperature sensor (9) and a pressure sensor (10);
the controller comprises a relay output port, a switching value input port, a sensor port and a communication port;
the relay output port comprises an accelerator relay port, a starting motor relay port, a first power supply switching-on and switching-off relay port and a second power supply switching-on and switching-off relay port;
the sensor port comprises a rotating speed sensor port, a temperature sensor port and a pressure sensor port;
the communication port includes any one or more of the following: RS485 communication port (11), RS232 port (12), CAN communication port (13), USB communication port (14).
3. The generator set of claim 1, wherein the generator set control unit comprises:
the unit starts control module, and unit starts control module contains the following module:
a motor start module: enabling the starting motor to be electrified to work and driving the engine and the generator in sequence;
the generator starts the judging module: judging whether the generator is started successfully; if yes, executing a generator operation control module; if not, executing a starting frequency judging module;
a starting frequency judging module: and after the set interval time, returning to the generator starting judgment module and counting the returning times until the set returning times are reached, and generating an alarm shutdown signal.
4. The generator set according to claim 1, wherein in the power signal processing module, a waveform phase difference and an effective value, and active power, reactive power and apparent power of the power generation power supply in the power generation power supply circuit are calculated according to waveforms of the current monitoring signal and the voltage monitoring signal corresponding to the plurality of power generation power supply circuits;
the plurality of power generation power supply circuits comprise a first power supply circuit and a second power supply circuit, and the second power supply circuit is enabled to carry out switching-off unloading or switching-on loading in the circuit adjusting module.
5. The generator set of claim 3, wherein the motor start module sequentially performs a start-up delay and a warm-up delay to heat air input to the engine, and causes the throttle relay output to energize the throttle solenoid valve for operation, and performs a start-up delay to energize the starter motor for operation.
6. The generator set of claim 3, wherein the generator start determination module comprises any or all of:
a frequency condition judgment module: acquiring a voltage waveform curve signal of a power generation power supply in a power generation power supply circuit, acquiring a real-time power supply frequency value according to the voltage waveform curve signal, and judging whether the generator is started successfully or not according to the real-time power supply frequency value and a set power supply frequency value;
a rotating speed condition judging module: and acquiring an engine rotating speed signal from a rotating speed sensor, and judging whether the generator is started successfully according to the engine rotating speed signal and a set rotating speed value.
7. The generator set of claim 1, wherein the generator set control unit further comprises a set shutdown control module, the set shutdown control module comprising any or all of:
an immediate shutdown module: the power generation power circuit is enabled to directly unload the brake separating, the shutdown delay is executed, and the accelerator relay is enabled to stop outputting;
a cooling shutdown module: and unloading the power generation power supply circuit according to a set rule, and after cooling delay is executed, stopping the power generation power supply circuit and stopping the output of the accelerator relay.
8. The generator set of claim 1, wherein the generator set control unit further comprises an engine operating parameter monitoring module: acquiring any one or more of the following signals: the engine comprises an engine rotating speed signal, an engine cylinder head temperature signal, an engine oil pressure signal, a cooling liquid detection signal and an air inlet detection signal.
9. A generator set control method according to claim 3, 5 or 6, characterized by comprising a generator operation control step comprising the steps of:
a voltage signal acquisition step: acquiring voltage monitoring signals of a plurality of power generation power supply circuits:
a current signal acquisition step: acquiring current monitoring signals of a plurality of power generation power supply circuits;
power supply signal processing: processing the voltage monitoring signal and the current monitoring signal to obtain a power signal of a power generation source;
a circuit adjusting step: comparing the power signal of the power generation power supply with a set total power value, and unloading switching-off or switching-on loading of one or more power generation power supply circuits in the plurality of power generation power supply circuits;
the unit starting control step comprises the following steps:
a motor starting step: enabling the starting motor to be electrified to work and driving the engine and the generator in sequence;
a generator starting judgment step: judging whether the generator is started successfully; if yes, executing a generator operation control module; if not, executing a starting frequency judging module;
a starting frequency judging step: after the set interval time, returning to the generator starting judgment module and counting the returning times until the set returning times are reached, and generating an alarm shutdown signal;
the generator set is a single-layer and double-layer magnetic field orthogonal winding permanent magnet synchronous generator set.
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| CN114215651A (en) * | 2021-12-21 | 2022-03-22 | 福建亚南电机有限公司 | Control method and system for quick start and synchronous operation of generator set |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882880A (en) * | 2010-07-02 | 2010-11-10 | 浙江大学 | Multi-generator set multi-pulse rectifying method |
| CN102386829A (en) * | 2011-08-24 | 2012-03-21 | 南京航空航天大学 | Starting power generation system for electric automobile |
| CN204989836U (en) * | 2015-08-03 | 2016-01-20 | 佛山市派能机电有限公司 | Marine generating set distribution system |
| CN205141699U (en) * | 2015-11-03 | 2016-04-06 | 福建奥斯福电力系统有限公司 | Generating set's parallel machine control circuit |
-
2019
- 2019-01-29 CN CN201910087337.3A patent/CN109672376B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882880A (en) * | 2010-07-02 | 2010-11-10 | 浙江大学 | Multi-generator set multi-pulse rectifying method |
| CN102386829A (en) * | 2011-08-24 | 2012-03-21 | 南京航空航天大学 | Starting power generation system for electric automobile |
| CN204989836U (en) * | 2015-08-03 | 2016-01-20 | 佛山市派能机电有限公司 | Marine generating set distribution system |
| CN205141699U (en) * | 2015-11-03 | 2016-04-06 | 福建奥斯福电力系统有限公司 | Generating set's parallel machine control circuit |
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