CN113972691B - Control device of generator set - Google Patents
Control device of generator set Download PDFInfo
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- CN113972691B CN113972691B CN202111314365.8A CN202111314365A CN113972691B CN 113972691 B CN113972691 B CN 113972691B CN 202111314365 A CN202111314365 A CN 202111314365A CN 113972691 B CN113972691 B CN 113972691B
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- power
- generator set
- target load
- commercial power
- grid
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
Abstract
The application discloses controlling means of generating set includes: the system comprises a controller, a grid-connected control module, a mains switch, a generator set switch, a speed regulator, a voltage regulator, a mains transformer and a generator set transformer, wherein the controller is used for adjusting the grid-connected mode of the generator set and the mains in real time according to the running state of the mains and the power supply requirement of a target load so as to ensure the normal running of the target load, and the grid-connected control module is used for receiving a control instruction sent by the controller. Because the controller can adjust the grid-connected mode of the generator set and the commercial power in real time according to the running state of the commercial power and the power supply requirement of the target load and ensure the normal operation of the target load, the grid-connected mode of the generator set and the commercial power is increased by the setting mode, and therefore the generator set provided by the application can be applied to more complex environments, and the use experience of a user can be obviously improved.
Description
Technical Field
The invention relates to the technical field of generators, in particular to a control device of a generator set.
Background
Because a generator set can supply power to a load as a temporary power supply device, the generator set is widely used in various industries. In the prior art, if the utility power cannot meet the power supply requirement of the load, the generator set is usually connected with the utility power in a grid mode to supply power to the load.
However, the current generator set can only be connected with the mains supply in one mode, and after the generator set is connected with the mains supply, the running state of the generator set cannot be adjusted according to the use requirement of a load and the running condition of the mains supply. Thus, the complex and changeable field environment cannot be dealt with, and the use experience of a user is greatly reduced. Currently, there is no more effective solution to this technical problem.
Disclosure of Invention
In view of the above, the present invention is directed to a control device for a generator set, so as to increase the grid-connected mode of the generator set and the utility power, so that the generator set can be applied in more complex environments, and thus the use experience of users is improved. The specific scheme is as follows:
a control device for a generator set, comprising: the system comprises a controller, a grid-connected control module, a mains switch, a generator set switch, a speed regulator, a voltage regulator, a mains transformer and a generator set transformer, wherein the controller is used for adjusting the grid-connected mode of the generator set and the mains in real time according to the running state of the mains and the power supply requirement of a target load so as to ensure the normal running of the target load;
the system comprises a power generator, a voltage regulator, a speed regulator, a grid-connected control module, a voltage transformer and a grid-connected control module, wherein the output end of the power supply is connected with the first end of the power generator, the second end of the power generator is connected with the first end of the power generator, the control end of the power generator and the control end of the power generator are respectively connected with the grid-connected control module, the mutual inductance coil of the power transformer is connected to a connecting line between the power supply and the power generator, the output end of the power transformer is connected with the grid-connected control module, the mutual inductance coil of the power generator is connected to a connecting line between the power generator and the power generator, and the output end of the power transformer is connected with the grid-connected control module;
correspondingly, a connecting wire between the second end of the mains switch and the first end of the generator set switch is connected with the target load.
Preferably, the process of adjusting the grid-connected mode of the generator set and the utility power in real time according to the running state of the utility power and the power supply requirement of the target load to ensure the normal running of the target load includes:
when the commercial power fails, the commercial power is turned off, and the generator set is started to supply power to the target load;
when the commercial power cannot meet the power supply requirement of the target load, starting the generator set, controlling the generator set to be connected with the commercial power in a grid mode, and adjusting the power output of the generator set according to the required power of the target load;
when the output power of the commercial power fluctuates and the power supply requirement of the target load cannot be met, starting the generator set, controlling the generator set to be connected with the commercial power in a grid mode, and adjusting the power output of the generator set in real time according to the output power of the commercial power and the required power of the target load;
and when the commercial power is determined to be unable to supply power to the target load in a preset time period according to the control instruction, the generator set and the commercial power are connected in advance, and when the output power of the commercial power is lower than a preset power value, the commercial power is turned off, and the generator set is independently used for supplying power to the target load.
Preferably, the process of turning off the utility power and starting the generator set to supply power to the target load when the utility power fails includes:
and when the commercial power fails, opening the commercial power switch, and closing the generator set switch to start the generator set to supply power to a target load.
Preferably, the process of starting the generator set, controlling the generator set to be connected with the utility power in a grid mode, and adjusting the power output of the generator set in real time according to the output power of the utility power and the required power of the target load includes:
closing a generator set switch, starting the generator set, and controlling the generator set to be connected with the mains supply in a grid mode;
and detecting the required power of the target load in real time by using the commercial power transformer, and adjusting the power output of the generator set by using the speed regulator and the voltage regulator according to the output power of the commercial power and the required power of the target load in real time.
Preferably, the process of connecting the generator set and the utility power in advance, and turning off the utility power when the output power of the utility power is lower than a preset power value, and independently using the generator set to supply power to the target load includes:
closing a generator set switch to grid-connect the generator set and the commercial power, and detecting the output power of the commercial power by utilizing the commercial power transformer;
and when the output power of the commercial power is lower than the preset power value, turning off the commercial power switch to independently utilize the generator set to supply power for the target load.
Preferably, the process of controlling the generator set to be connected with the mains supply includes:
and when the operation parameters of the generator set are consistent with those of the commercial power, controlling the generator set to be connected with the commercial power.
Preferably, the method further comprises:
when the commercial power is recovered to be normal, the operation parameters of the generator set are adjusted, and the generator set is controlled to be connected with the commercial power in a grid mode;
and when the required power of the target load is completely transferred to the commercial power, the generator set is turned off, and the commercial power is independently utilized to supply power for the target load.
Preferably, the process of turning off the generator set and individually using the utility power to supply power to the target load when the required power of the target load is completely transferred to the utility power includes:
when the generator set transformer is utilized to detect that the required power of the target load is zero, the condition that the required power of the target load is completely transferred to the commercial power is judged, the generator set is turned off, and the commercial power is utilized to supply power for the target load independently.
Therefore, according to the control device provided by the invention, the controller can adjust the grid-connected mode of the generator set and the commercial power in real time according to the running state of the commercial power and the power supply requirement of the target load, and ensure the normal running of the target load. Therefore, the grid-connected mode of the generator set and the commercial power is increased, and the generator set provided by the invention can be applied to more complex environments, so that the use experience of a user can be obviously improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a control device for a generator set according to an embodiment of the present invention;
FIG. 2 is a flowchart of a real-time adjustment of a grid-connected mode of a generator set and a utility power according to an operation state of the utility power and a power supply requirement of a target load according to an embodiment of the present invention;
fig. 3 is a block diagram of another control device for a generator set according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a block diagram of a control device of a generator set according to an embodiment of the present invention, where the control device includes: the system comprises a controller, a grid-connected control module, a mains switch MQF, a generator set switch GQF, a speed regulator GOR, a voltage regulator GOV, a mains transformer MCT and a generator set transformer GCT, wherein the controller is used for adjusting the grid-connected mode of the generator set and the mains in real time according to the running state of the mains and the power supply requirement of a target load so as to ensure the normal running of the target load;
the output end of the commercial power is connected with the first end of a commercial power switch MQF, the second end of the commercial power switch MQF is connected with the first end of a generator set switch GQF, a generator in the generator set is respectively connected with the second end of the generator set switch GQF and the first end of a voltage regulator GOV, the second end of the voltage regulator GOV is connected with a grid-connected control module, an engine in the generator set is connected with the first end of a speed regulator GOR, the second end of the speed regulator GOR is connected with the grid-connected control module, the control end of the commercial power switch MQF and the control end of the generator set switch GQF are respectively connected with the grid-connected control module, a mutual inductance coil of a commercial power transformer MCT is connected to a connecting line between the commercial power and the commercial power switch MQF, the output end of the commercial power transformer MCT is connected with the grid-connected control module, and the output end of the generator set transformer GCT is connected with the grid-connected control module;
accordingly, the connection between the second end of the mains switch MQF and the first end of the genset switch GQF is connected to the target load.
In this embodiment, a control device for a generator set is provided, and by using the control device, a grid-connected mode of the generator set and a mains supply can be increased, and the control device can be suitable for more complex scenes, so that the use experience of a user can be obviously improved. The control device is provided with a controller, a grid-connected control module, a mains switch MQF, a generator set switch GQF, a speed regulator GOR, a voltage regulator GOV, a mains transformer MCT and a generator set transformer GQF; the controller can adjust the grid-connected mode of the generator set and the commercial power in real time according to the running state of the commercial power and the power supply requirement of the target load, and ensure the normal running of the target load, and the grid-connected control module can execute corresponding triggering actions according to the control instructions sent by the controller.
It can be understood that in the generator set control device provided in this embodiment, the controller can adjust the grid-connected mode of the generator set and the utility power in real time according to the running state of the utility power and the power supply requirement of the target load, and ensure the normal operation of the target load. Compared with the prior art that the generator set can only be connected with the mains supply in one mode, and after the generator set is connected with the mains supply, the generator set cannot adjust the running state of the generator set according to the use requirement of the load and the running condition of the mains supply, and the grid-connected mode of the generator set and the mains supply can be increased through the control device provided by the embodiment, so that the generator set can be applied to more complex environments, and the use experience of a user can be obviously improved through the generator set control device provided by the embodiment.
Moreover, the generator set provided by the embodiment has a plurality of grid-connected modes at the same time, so that the running state of the generator set can be adjusted in real time according to the running state of the target load and the commercial power. Even if the running state of the commercial power is changed in various ways, the generator set can not influence the actual production process due to insufficient electric quantity of the commercial power or economic loss due to insufficient electric quantity of the commercial power. That is, in practical application, the generator set control device provided by the embodiment can meet various production requirements only by adding one generator set, and other systems or power generation control equipment are not required to be added, so that the input cost of enterprises in the aspect of standby power supply can be obviously reduced.
Therefore, according to the control device provided by the embodiment, the controller can adjust the grid-connected mode of the generator set and the commercial power in real time according to the running state of the commercial power and the power supply requirement of the target load, and ensure the normal running of the target load. Therefore, the grid-connected mode of the generator set and the commercial power is increased, and the generator set provided by the embodiment can be applied to more complex environments, so that the use experience of a user can be improved obviously.
Based on the above embodiments, the technical solution is further described and optimized in this embodiment, please refer to fig. 2, and fig. 2 is a flowchart provided by the embodiment of the present invention for adjusting the grid-connected mode of the generator set and the utility power in real time according to the running state of the utility power and the power supply requirement of the target load. As a preferred embodiment, the above: the process for adjusting the grid-connected mode of the generator set and the commercial power in real time according to the running state of the commercial power and the power supply requirement of the target load so as to ensure the normal running of the target load comprises the following steps:
step S11: when the commercial power fails, the commercial power is turned off, and the generator set is started to supply power to the target load;
step S12: when the commercial power cannot meet the power supply requirement of the target load, starting the generator set, controlling the generator set to be connected with the commercial power in a grid mode, and adjusting the power output of the generator set according to the required power of the target load;
step S13: when the output power of the commercial power fluctuates and the power supply requirement of the target load cannot be met, starting the generator set, controlling the generator set to be connected with the commercial power, and adjusting the power output of the generator set in real time according to the output power of the commercial power and the required power of the target load;
step S14: when the commercial power cannot supply power to the target load in the preset time period according to the control instruction, the generator set and the commercial power are connected in advance, and when the output power of the commercial power is lower than a preset power value, the commercial power is turned off, and the generator set is independently used for supplying power to the target load.
In this embodiment, a detailed description is given of a process of adjusting the generator set and the grid-connected mode of the utility power in real time by the controller according to the running state of the utility power and the power supply requirement of the target load. Specifically, in the process of adjusting the generator set and the mains grid-connected mode by using the controller, the operation mode of the generator set can be divided into a mains fault application mode, a fixed power output mode, a peak shaving mode and a load transfer mode.
The utility power failure application mode is applied to the scene of the utility power failure. When the commercial power fails, the controller can turn off the commercial power and start the generator set to supply power to the target load. Specifically, when the utility power fails, the utility power is turned off, and the process of the generator set for supplying power to the target load is started, including:
when the commercial power fails, the commercial power switch is opened, and the generator set switch is closed so as to start the generator set to supply power to the target load.
That is, when the utility power fails, the generator set is used as a backup power source, the controller will open the utility power switch MQF and close the generator set switch GQF, thereby starting the generator set to supply power to the target load. Specifically, when the grid-connected control module receives a control signal that the utility power sent by the controller fails, the controller delays and confirms, then opens the utility power switch MQF and closes the generator set switch GQF, so that the generator set is used to supply power to the target load.
When the commercial power resumes operation, the controller can adjust the operation state of the generator set through the speed regulator GOR and the voltage regulator GOV, and when the operation parameters of the generator set are consistent with the operation parameters of the commercial power, the controller controls the generator set to be connected with the commercial power. After the generator set is connected with the mains supply, the controller transfers the target load to the mains supply through the grid connection control module, and then the generator set switch GQF is turned off and the mains supply supplies power to the target load.
The fixed power output mode is mainly applied to the situations that the output of some commercial power capacity is insufficient and the power consumption of a supporting target load cannot be met. That is, when the utility power cannot meet the power supply requirement of the target load, the controller starts the generator set, controls the generator set to be connected with the utility power in a grid mode, and adjusts the power output of the generator set according to the required power of the target load so as to supply power to the target load by using the generator set and the utility power together. Specifically, when the utility power cannot meet the power supply requirement of the target load, the controller will close the generator set switch GQF, and the controller will control the utility power transformer MCT to detect the required power of the target load, and regulate and control the running state of the generator set through the speed regulator GOR and the voltage regulator GOV, so that the generator set gradually carries to a set power, where the set power is equal to the difference between the required power of the target load and the utility power supply power.
Assuming that the rated power of the generator set is 1000KW, according to the electricity demand power of the target load, the power demand of the target load can be met only when the output power of the generator set is 800KW and the generator set is connected with the mains supply. Therefore, after the generator set is connected with the mains supply, the controller can adjust the output rotating speed and the voltage of the generator set through the speed regulator GOR and the voltage regulator GOV, so that the generator set is connected with a load of 800KW from the mains supply, and the generator set is controlled to output constant power. When the required power of the target load is reduced and the commercial power is enough to supply power to the target load, the controller transfers the target load to the commercial power and the commercial power supplies power to the target load.
The peak shaving mode is mainly applied to the scene that the output power of the commercial power fluctuates and the power supply requirement of the target load cannot be met. If the application scene appears, the controller can start the generator set, control the generator set to be connected with the mains supply in a grid mode, and adjust the power output of the generator set in real time according to the output power of the mains supply and the required power of the target load. Specifically, the process of starting the generator set, controlling the generator set to be connected with the commercial power and adjusting the power output of the generator set in real time according to the output power of the commercial power and the required power of the target load includes:
closing a generator set switch, starting a generator set, and controlling the generator set to be connected with the mains supply;
the utility power transformer is utilized to detect the required power of the target load in real time, and the speed regulator and the voltage regulator are utilized to regulate the power output of the generator set according to the output power of the utility power and the required power of the target load in real time.
That is, when the output power of the utility power fluctuates and the power supply requirement of the target load cannot be met, the controller will close the generator set switch GQF first, start the generator set, and control the generator set to be connected with the utility power when the operation parameters of the generator set are consistent with the operation parameters of the utility power; when the generator set is connected with the mains supply, the controller can detect the required power of the target load in real time through the mains supply transformer MCT, and control the speed regulator GOR and the voltage regulator GOV according to the required power of the target load and the output power of the mains supply to regulate the output power of the generator set.
In this embodiment, in order to make the output power of the generator set smoother, the controller will first utilize the commercial power transformer MCT to detect the required power of the target load in real time; when the required power of the target load is greater than the preset starting set value, the controller can adjust the output voltage and the output rotating speed of the generator set through the voltage regulator GOV and the speed regulator GOR to operate with the minimum fixed load so as to cope with the change of the required power of the target load at any time. When the controller detects that the required power of the target load is larger than the maximum output power of the mains supply through the mains transformer MCT, the generator set can bear the excessive part of the target load exceeding the mains supply power. When the required power of the target load falls below the maximum output power set by the commercial power, the controller controls the generator set to operate at the minimum fixed load again. When the demand power of the target load drops to the shutdown set point of the genset, the controller turns off the genset switch GQF and stops supplying power to the target load with the genset.
And the load transfer mode is mainly applied to the situation that maintenance is needed in the middle of the commercial power, and the target load cannot stop power supply in the middle. That is, when the utility power cannot supply power to the target load in the preset time period, the controller controls the generator set and the utility power to be connected in parallel in advance, and when the output power of the utility power is lower than the preset power value, the utility power is turned off, and the generator set is independently used for supplying power to the target load.
Specifically, the process of connecting the generator set and the mains supply in advance, and cutting off the mains supply when the output power of the mains supply is lower than a preset power value and independently using the generator set to supply power for a target load comprises the following steps:
closing a generator set switch to grid-connect the generator set and the mains supply, and detecting the output power of the mains supply by utilizing a mains supply transformer;
and when the output power of the commercial power is lower than a preset power value, turning off the commercial power switch to independently utilize the generator set as a target load for power supply.
That is, in the process of controlling the generator set to be connected to the utility power, the controller firstly closes the generator set switch GQF, and detects the output power of the utility power by using the utility power transformer MCT, and when the utility power transformer MCT detects that the output power of the utility power is lower than the preset power value, the controller turns off the utility power switch MQF and independently uses the generator set to supply power to the target load. When genset switch GQF is closed and the utility load decreases to the set point of utility switch MQF, utility switch MQF is opened from the utility grid. In this case, the target load is transferred to the generator set entirely and is supplied by the generator set.
As a preferred embodiment, further comprising:
when the commercial power is recovered to be normal, the operation parameters of the generator set are adjusted, and the generator set is controlled to be connected with the commercial power in a grid mode;
when the required power of the target load is completely transferred to the commercial power, the generator set is turned off, and the commercial power is independently used for supplying power to the target load.
When the commercial power is recovered to be normal, the controller can adjust the operation parameters of the generator set through the speed regulator GOR and the voltage regulator GOV and control the generator set to be connected with the commercial power in a grid mode. When the generator set is connected with the mains supply, the controller can transfer all the required power of the target load to the mains supply, and when the required power of the target load is transferred to the mains supply, the controller can turn off the generator set and then control the mains supply to independently supply power to the target load.
Specifically, when the required power of the target load is completely transferred to the utility power, the generator set is turned off, and the utility power is independently used for supplying power to the target load, which comprises the following steps:
when the transformer of the generator set detects that the required power of the target load is zero, the generator set is turned off, and the power supply is independently carried out by taking the commercial power as the target load.
It can be understood that when the generator set transformer GCT detects that the required power of the target load is zero, it indicates that the required power of the target load has been completely transferred to the utility power, in which case the controller may turn off the generator set and separately use the utility power to supply power to the target load.
Obviously, through the four grid-connected modes of the generator set and the commercial power provided by the embodiment, the generator set can be applied to more complex environments, and therefore the use experience of a user can be obviously improved.
In addition, in practical application, a mode change-over switch can be further arranged on the controller so as to control the working operation mode of the generator set through the mode change-over switch. Such as: a mode 1 knob, a mode 2 knob, a mode 3 knob, and a mode 4 knob may be provided on the mode transfer switch, wherein the mode 1 knob corresponds to a utility fault application mode of the genset, the mode 2 knob corresponds to a fixed power output mode of the genset, the mode 3 knob corresponds to a peak shaving mode of the genset, and the mode 4 knob corresponds to a load transfer mode of the genset. Referring to fig. 3 specifically, fig. 3 is a block diagram of another control device for a generator set according to an embodiment of the present invention.
It can be thought that when the controller is set in the structural form, a worker only needs to select and trigger the mode knob on the controller according to the requirement of real-time conditions, so that the generator set can work in a corresponding working mode, and the use experience of a user can be further improved.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description has been made in detail of a control device for a generator set provided by the present invention, and specific examples are applied herein to illustrate the principles and embodiments of the present invention, where the above description of the examples is only for helping to understand the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (7)
1. A control device for a generator set, comprising: the system comprises a controller, a grid-connected control module, a mains switch, a generator set switch, a speed regulator, a voltage regulator, a mains transformer and a generator set transformer, wherein the controller is used for adjusting the grid-connected mode of the generator set and the mains in real time according to the running state of the mains and the power supply requirement of a target load so as to ensure the normal running of the target load;
the system comprises a power generator, a voltage regulator, a speed regulator, a grid-connected control module, a voltage transformer and a grid-connected control module, wherein the output end of the power supply is connected with the first end of the power generator, the second end of the power generator is connected with the first end of the power generator, the control end of the power generator and the control end of the power generator are respectively connected with the grid-connected control module, the mutual inductance coil of the power transformer is connected to a connecting line between the power supply and the power generator, the output end of the power transformer is connected with the grid-connected control module, the mutual inductance coil of the power generator is connected to a connecting line between the power generator and the power generator, and the output end of the power transformer is connected with the grid-connected control module;
correspondingly, a connecting wire between the second end of the mains switch and the first end of the generator set switch is connected with the target load;
the process for adjusting the grid-connected mode of the generator set and the commercial power in real time according to the running state of the commercial power and the power supply requirement of the target load so as to ensure the normal running of the target load comprises the following steps:
when the commercial power fails, the commercial power is turned off, and the generator set is started to supply power to the target load;
when the commercial power cannot meet the power supply requirement of the target load, starting the generator set, controlling the generator set to be connected with the commercial power in a grid mode, and adjusting the power output of the generator set according to the required power of the target load;
when the output power of the commercial power fluctuates and the power supply requirement of the target load cannot be met, starting the generator set, controlling the generator set to be connected with the commercial power in a grid mode, and adjusting the power output of the generator set in real time according to the output power of the commercial power and the required power of the target load;
and when the commercial power is determined to be unable to supply power to the target load in a preset time period according to the control instruction, the generator set and the commercial power are connected in advance, and when the output power of the commercial power is lower than a preset power value, the commercial power is turned off, and the generator set is independently used for supplying power to the target load.
2. The control device according to claim 1, wherein when the utility power fails, the utility power is turned off, and a process of supplying power to the target load by the generator set is started, including:
and when the commercial power fails, opening the commercial power switch, and closing the generator set switch to start the generator set to supply power to a target load.
3. The control device according to claim 1, wherein the process of starting the generator set, controlling the generator set to be connected to the utility power, and adjusting the power output of the generator set in real time according to the output power of the utility power and the required power of the target load includes:
closing a generator set switch, starting the generator set, and controlling the generator set to be connected with the mains supply in a grid mode;
and detecting the required power of the target load in real time by using the commercial power transformer, and adjusting the power output of the generator set by using the speed regulator and the voltage regulator according to the output power of the commercial power and the required power of the target load in real time.
4. The control device according to claim 1, wherein the process of connecting the generator set to the utility power in advance and turning off the utility power when the output power of the utility power is lower than a preset power value, and using the generator set alone to supply power to the target load includes:
closing a generator set switch to grid-connect the generator set and the commercial power, and detecting the output power of the commercial power by utilizing the commercial power transformer;
and when the output power of the commercial power is lower than the preset power value, turning off the commercial power switch to independently utilize the generator set to supply power for the target load.
5. The control device according to claim 1, wherein the process of controlling the generator set to be connected to the utility power includes:
and when the operation parameters of the generator set are consistent with those of the commercial power, controlling the generator set to be connected with the commercial power.
6. The control device according to claim 1, characterized by further comprising:
when the commercial power is recovered to be normal, the operation parameters of the generator set are adjusted, and the generator set is controlled to be connected with the commercial power in a grid mode;
and when the required power of the target load is completely transferred to the commercial power, the generator set is turned off, and the commercial power is independently utilized to supply power for the target load.
7. The control apparatus according to claim 6, wherein the process of turning off the generator set and individually using the utility power to supply power to the target load when the required power of the target load is entirely transferred to the utility power, comprises:
when the generator set transformer is utilized to detect that the required power of the target load is zero, the condition that the required power of the target load is completely transferred to the commercial power is judged, the generator set is turned off, and the commercial power is utilized to supply power for the target load independently.
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