CN108667133A - Main power source switching method, apparatus and system - Google Patents
Main power source switching method, apparatus and system Download PDFInfo
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- CN108667133A CN108667133A CN201810473684.5A CN201810473684A CN108667133A CN 108667133 A CN108667133 A CN 108667133A CN 201810473684 A CN201810473684 A CN 201810473684A CN 108667133 A CN108667133 A CN 108667133A
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
-
- 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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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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- Power Engineering (AREA)
- Business, Economics & Management (AREA)
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention relates to a kind of main power source switching method, apparatus and systems, are adjusting the generating voltage of generator until when generating voltage is consistent with the reference voltage of micro-capacitance sensor, generator is incorporated to micro-capacitance sensor.The output power of generator is promoted simultaneously until when the output power of generator is consistent with the first predetermined target value, by generator by determining active reactive pattern switching to constant voltage frequency mode, and energy-storage system is switched to by constant voltage frequency mode and determines active reactive pattern.In micro-capacitance sensor off-grid operation, without can be realized the main power source in micro-capacitance sensor switching to generator from energy-storage system by the generator or energy-storage system that have droop control.Based on this, while being easy to implement switching of the main power source from energy-storage system to generator, it is effectively reduced the cost of main power source switching.
Description
Technical field
The present invention relates to technical field of power systems, more particularly to a kind of main power source switching method, apparatus and system.
Background technology
In the micro-capacitance sensor for having generator and energy-storage system at the same time, when micro-capacitance sensor off-grid operation, equipment conduct is needed
Main power source maintains the voltage and frequency stabilization of entire micro-grid system.For can off-grid operation micro-capacitance sensor, it is contemplated that energy storage system
The fast response time of system can quickly adjust during micro-grid connection leaves net compared with generator, ensure micro-grid system
Therefore the grid-connected stabilization for leaving system in network process is incorporated into the power networks when leaving network operation, preferred energy-storage system is as initial off-network
Run main power source.However, energy-storage system is influenced as main power source run time by energy-storage system battery capacity, in microgrid off-network
After running a period of time, energy-storage system electricity should enable generator before exhausting, and main power source is switched to generator.On the other hand,
After generator operates to main power source for a period of time, when the clean energy resourcies such as photovoltaic, wind-power electricity generation maintain the use of microgrid enough in microgrid
When electricity and operation, from economic considerations, main power source can be switched back into energy-storage system, generator outage.Generator, energy-storage system are not
Can be main power source simultaneously, when a side is in main power source operational mode, it is necessary to while another party being made to be switched to PQ operational modes.
Traditional includes mainly following two to generator and the mode that energy-storage system switches over：One is monitoring systems
It realizes that power supply switches by way of message communication, needs energy-storage system switching to droop control pattern before power supply switching；Separately
One is when power supply switches allow micro-capacitance sensor have a power failure in short-term, when energy-storage system charge value SOC, which is reduced to, to be unable to maintain that, energy storage
System-down, while monitoring system starts diesel-driven generator by remote message order, after diesel-driven generator runs a period of time,
It is run again with entire micro-capacitance sensor.But energy-storage system is switched into droop control pattern before power supply switching, need droop control
The energy-storage system and generator of function, and extensive use is not yet received in the energy-storage system at present with droop control function, and under band
The cost of the energy-storage system for control function of hanging down is higher.On the other hand, had a power failure in short-term to micro-grid system, cannot be satisfied micro- electricity
Net system is to high power quality and has the demand not having a power failure.
In conclusion there is also drawbacks described above for traditional main power source switching method.
Invention content
Based on this, it is necessary to for traditional main power source switching method there is also defect, a kind of switching of main power source is provided
Method, apparatus and system.
A kind of method that main power source is switched to generator by energy-storage system, including step：
Adjust the generating voltage of generator；
If generating voltage is consistent with the reference voltage of micro-capacitance sensor, generator is incorporated to micro-capacitance sensor；
Promote the output power of generator；
If the output power of generator is consistent with the first predetermined target value, by generator by determining active reactive pattern switching
To constant voltage frequency mode, and it is surely active by being switched to by constant voltage frequency mode as the energy-storage system of main power source in micro-capacitance sensor
Idle pattern.
The method that above-mentioned main power source is switched to generator by energy-storage system adjusts the generating voltage of generator until power generation electricity
When pressure is consistent with the reference voltage of micro-capacitance sensor, generator is incorporated to micro-capacitance sensor.The output power of generator is promoted simultaneously until hair
When the output power of motor is consistent with the first predetermined target value, by generator by determining active reactive pattern switching to constant voltage frequency
Pattern, and energy-storage system is switched to by constant voltage frequency mode and determines active reactive pattern.In micro-capacitance sensor off-grid operation, it is not necessarily to
It can be realized by the generator or energy-storage system that have droop control and switch to the main power source in micro-capacitance sensor from energy-storage system
Generator.It is effectively reduced main power source while being easy to implement switching of the main power source from energy-storage system to generator based on this and cuts
The cost changed.
A kind of method that main power source is switched to energy-storage system by generator, including step：
It will be incorporated to the energy-storage system of micro-capacitance sensor by determining active reactive pattern switching to constant voltage frequency mode, and by micro- electricity
It is switched to by constant voltage frequency mode as the generator of main power source in net and determines active reactive pattern；
The output power of generator is reduced to the second predetermined target value；
Corresponding load is transferred to energy-storage system by the output power reduced according to generator.
The method that above-mentioned main power source is switched to energy-storage system by generator, by energy-storage system by determining active reactive pattern switching
To constant voltage frequency mode, and generator is switched to by constant voltage frequency mode and determines active reactive pattern.Simultaneously by generator
Output power be reduced to the second predetermined target value, and the output power reduced according to generator, corresponding load is shifted
To energy-storage system.In micro-capacitance sensor off-grid operation, without can be realized by the generator or energy-storage system that have droop control
Main power source in micro-capacitance sensor is switched into energy-storage system from generator.Based on this, main power source is easy to implement from generator to energy storage
While the switching of system, it is effectively reduced the cost of main power source switching.
A kind of main power source is switched to the device of generator by energy-storage system, including：
Generating voltage adjusts module, the generating voltage for adjusting generator；
Cutting-in control module is used for when generating voltage is consistent with the reference voltage of micro-capacitance sensor, by generator and electric in a subtle way
Net；
Power ascension module, the output power for promoting generator；
First mode handover module, for when the output power of generator is consistent with the first predetermined target value, will generate electricity
Machine by determining active reactive pattern switching to constant voltage frequency mode, and by micro-capacitance sensor as the energy-storage system of main power source by determining electricity
Voltage-frequency rate pattern switching is to determining active reactive pattern.
Above-mentioned main power source is switched to the device of generator by energy-storage system, adjusts the generating voltage of generator until power generation electricity
When pressure is consistent with the reference voltage of micro-capacitance sensor, generator is incorporated to micro-capacitance sensor.The output power of generator is promoted simultaneously until hair
When the output power of motor is consistent with the first predetermined target value, by generator by determining active reactive pattern switching to constant voltage frequency
Pattern, and energy-storage system will be switched to by constant voltage frequency mode and determine active reactive pattern.In micro-capacitance sensor off-grid operation, nothing
The generator for having droop control or energy-storage system need to be relied on to can be realized to switch the main power source in micro-capacitance sensor from energy-storage system
To generator.Based on this main power source is effectively reduced while being easy to implement switching of the main power source from energy-storage system to generator
The cost of switching.
A kind of main power source is switched to the device of energy-storage system by generator, including：
Second mode handover module, for that will be incorporated to the energy-storage system of micro-capacitance sensor by determining active reactive pattern switching to calmly
Electric voltage frequency pattern, and determine active reactive mould by being switched to by constant voltage frequency mode as the generator of main power source in micro-capacitance sensor
Formula；
Power reduction module, for the output power of generator to be reduced to the second predetermined target value；
Load shift module, the output power for being reduced according to generator will be corresponding with the output power of reduction
Load is transferred to energy-storage system.
Above-mentioned main power source is switched to the device of energy-storage system by generator, by energy-storage system by determining active reactive pattern switching
To constant voltage frequency mode, and generator is switched to by constant voltage frequency mode and determines active reactive pattern.Simultaneously by generator
Output power be reduced to the second predetermined target value, and the output power reduced according to generator, corresponding load is shifted
To energy-storage system.In micro-capacitance sensor off-grid operation, without can be realized by the generator or energy-storage system that have droop control
Main power source in micro-capacitance sensor is switched into energy-storage system from generator.Based on this, main power source is easy to implement from generator to energy storage
While the switching of system, it is effectively reduced the cost of main power source switching.
A kind of system that main power source is switched to generator by energy-storage system, including monitoring system, energy-storage system and generator；
Monitoring system connects generator by hard contact connection type；
Energy-storage system connects generator by hard contact connection type；
Monitoring system is used to adjust the generating voltage of generator, and the output power for promoting generator；
Monitoring system is additionally operable to the pattern of switching generator；
Generator is used for when emergence pattern switches, and control energy-storage system carries out pattern switching.
The system that above-mentioned main power source is switched to generator by energy-storage system adjusts the power generation of generator by monitoring system
Voltage and output power, and control generator and carry out pattern conversion, realize the switching of the main power source under micro-capacitance sensor off-grid operation, and
Without relying on the energy-storage system and generator that have droop control, it is effectively reduced the cost of main power source switching.Meanwhile generator
Carry out pattern switching when, directly control energy-storage system carry out pattern switching, without pass through monitoring system carry out differentiate pass on into
Row pattern switching improves reliability, stability and the efficiency of main power source switching.
A kind of system that main power source is switched to energy-storage system by generator, including monitoring system, energy-storage system and generator；
Monitoring system is separately connected energy-storage system and generator by hard contact connection type；
Energy-storage system connects generator by hard contact connection type；
Monitoring system for reducing generator output power, and for switching the pattern of energy-storage system；
For energy-storage system when switching for emergence pattern, control generator carries out pattern switching.
The system that above-mentioned main power source is switched to energy-storage system by generator controls energy-storage system by monitoring system and carries out
Pattern is converted, and realizes the switching of the main power source under micro-capacitance sensor off-grid operation, without relying on the energy-storage system for having droop control
And generator, it is effectively reduced the cost of main power source switching.Meanwhile when energy-storage system progress pattern switching, directly controlling power generation
Machine carry out pattern switching, without pass through monitoring system carry out differentiate pass on to carry out pattern switching, improve main power source switching
Reliability, stability and efficiency.
A kind of main power source switching system, including monitoring system, energy-storage system and generator；
Monitoring system is separately connected energy-storage system and generator by hard contact connection type；
Energy-storage system connects generator by hard contact connection type；
Monitoring system is used to adjust the generating voltage of generator, and the output power for promoting or reducing generator；
Monitoring system is additionally operable to the pattern of switching generator or energy-storage system；
Generator is used for when emergence pattern switches, and control energy-storage system carries out pattern switching；
Energy-storage system is used for when emergence pattern switches, and control generator carries out pattern switching.
Above-mentioned main power source switching system controls one of energy-storage system or generator by monitoring system and carries out pattern turn
It changes, realizes the switching of the main power source under micro-capacitance sensor off-grid operation, without relying on the energy-storage system and the power generation that have droop control
Machine is effectively reduced the cost of main power source switching.Meanwhile when energy-storage system (generator) progress pattern switching, directly controlling hair
Motor (energy-storage system) carry out pattern switching, without pass through monitoring system carry out differentiate pass on to carry out pattern switching, improve
Reliability, stability and the efficiency of main power source switching.
Description of the drawings
Fig. 1 is the method flow diagram that main power source is switched to generator by energy-storage system in embodiment one；
Fig. 2 is the method flow diagram that main power source is switched to energy-storage system by generator in embodiment two；
Fig. 3 is that the main power source of embodiment three is switched to the structure drawing of device of generator by energy-storage system；
Fig. 4 is that the main power source of example IV is switched to the structure drawing of device of energy-storage system by generator；
Fig. 5 is that the main power source of embodiment five is switched to the system construction drawing of generator by energy-storage system；
Fig. 6 is the conversion logic figure that main power source is switched to generator by energy-storage system；
Fig. 7 is that the main power source of embodiment five is switched to the system construction drawing of generator by energy-storage system；
Fig. 8 is the conversion logic figure that main power source is switched to energy-storage system by generator；
Fig. 9 is the main power source switching system structure chart of embodiment seven
Specific implementation mode
Purpose, technical solution and technique effect for a better understanding of the present invention, below in conjunction with drawings and examples
Further explaining illustration is carried out to the present invention.It states simultaneously, embodiments described below is only used for explaining the present invention, not
For limiting the present invention
Embodiment one
Fig. 1 is the method flow diagram that main power source is switched to generator by energy-storage system in embodiment one, as shown in Figure 1, packet
Include step S100 to S103：
S100 adjusts the generating voltage of generator；
Wherein, generator includes the generating equipment for maintaining entire micro-grid system voltage and frequency stabilization enough, such as diesel oil
The generating equipments such as generator.
Further include step in one of the embodiments, before step S100：Start generator.
Before needing to carry out main power source switching, the closed state of generator is kept, to save the energy consumption of generator.
Wherein, after starting generator, the generating voltage of generator can gradually be promoted from zero.
Generator is incorporated to micro-capacitance sensor by S101 if generating voltage is consistent with the reference voltage of micro-capacitance sensor；
Usually, it is connected by grid-connected switch between generator and micro-capacitance sensor.Wherein, grid-connected switch is in normally open.
The reference voltage of generating voltage and micro-capacitance sensor can be judged by third-party control devices in one of the embodiments,
Whether consistent, third-party control devices control grid-connected switch and are closed when consistent.Wherein, third-party control devices include such as micro- electricity
The control device of monitoring system in net etc..
In another embodiment, when generating voltage is consistent with the reference voltage of micro-capacitance sensor, generator can be closed grid-connected
Switch.Usually, it can realize threshold decision by the programmable logic controller (PLC) on generator, judge generating voltage and micro- electricity
Whether the reference voltage of net is consistent, and carries out the closure control of grid-connected switch.
Wherein, after generator startup and before being incorporated to micro-capacitance sensor, generator, which operates in, determines active reactive pattern.
S102 promotes the output power of generator；
Engine is in rigid start, output power zero, and generator power can be promoted gradually upon actuation.Wherein, it generates electricity
The output power of machine includes the active power and reactive power of generator.
Step S102 includes step in one of the embodiments,：The defeated of generator is promoted according to preset ramp rate
Go out power, until the output power of generator is consistent with the first predetermined target value.
The output power of generator is promoted according to preset ramp rate, can control the promotion speed of generated output power
Degree, to ensure the improving stability of generated output power,
Wherein, when the output power of generator reaches the first predetermined target value, generator can be tieed up when as main power source
Hold the stabilization of micro-capacitance sensor.
S103, if the output power of generator is consistent with the first predetermined target value, by generator by determining active reactive mould
Formula switches to constant voltage frequency mode, and will be switched to by constant voltage frequency mode as the energy-storage system of main power source in micro-capacitance sensor
Determine active reactive pattern；
Wherein, generator is under constant voltage frequency mode, and generator is as the sources V/F, wherein V indicates that voltage, F indicate
Frequency, the voltage and frequency stabilization that generator provides, it is possible to provide and the voltage and frequency for maintaining micro-grid system to run, that is, it generates electricity
Machine is the main power source of micro-grid system.After generator is by determining active reactive pattern switching to constant voltage frequency mode, generator connects
Receive whole loads of micro-capacitance sensor busbar.
Wherein, in generator under determining active reactive pattern, generator is as the sources P/Q, wherein and P indicates active power,
Q indicates reactive power, the active power and reactive power stabilizer that generator provides.
Energy-storage system is switched to by constant voltage frequency mode determines active reactive pattern, i.e., energy-storage system is not re-used as remaining micro-
The main power source of the stabilization of power grids.
The method that the main power source of embodiment one is switched to generator by energy-storage system, adjust generator generating voltage until
When generating voltage is consistent with the reference voltage of micro-capacitance sensor, generator is incorporated to micro-capacitance sensor.The output power of generator is promoted simultaneously
Until when the output power of generator is consistent with the first predetermined target value, by generator by determining active reactive pattern switching to determining electricity
Frequency mode is pressed, and energy-storage system will be switched to by constant voltage frequency mode and determine active reactive pattern.It is transported in micro-capacitance sensor off-network
When row, without can be realized the main power source in micro-capacitance sensor from energy storage system by the generator or energy-storage system that have droop control
System switches to generator.It is effectively reduced while being easy to implement switching of the main power source from energy-storage system to generator based on this
The cost of main power source switching.
Embodiment two
Fig. 2 is the method flow diagram that main power source is switched to energy-storage system by generator in embodiment two, as shown in Fig. 2, packet
Include step S200 to S202：
S200 will be incorporated to the energy-storage system of micro-capacitance sensor by determining active reactive pattern switching to constant voltage frequency mode, and
Determine active reactive pattern by being switched to by constant voltage frequency mode as the generator of main power source in micro-capacitance sensor；
Wherein, energy-storage system is under constant voltage frequency mode, the electricity that energy-storage system is provided as the sources V/F, energy-storage system
Pressure and frequency stabilization, it is possible to provide and the voltage and frequency for maintaining micro-grid system to run, i.e. energy-storage system are micro-grid system
Main power source.Usually, energy-storage system is including to the energy storage battery system including accumulator group or lithium battery group etc..
Wherein, generator is switched to by constant voltage frequency mode and determines active reactive pattern, i.e., cut generator by the sources V/F
The sources P/Q are shifted to, generator is not re-used as the main power source of micro-grid system.
The output power of generator is reduced to the second predetermined target value by S201；
Wherein, the second predetermined target value is less than the first predetermined target value.By reducing the output power of generator, to reduce
The micro-grid load that generator is born.Usually, generator can reduce output power under determining active reactive pattern
To the second predetermined target value.
Step S201 includes step in one of the embodiments,：
The output power of generator is reduced according to preset ramp rate, until the output power of generator and second is preset
Desired value is consistent.
The output power of generator is reduced according to preset ramp rate, can control the reduction speed of generated output power
Degree, to ensure the stability of generated output power,
Corresponding load is transferred to energy-storage system by S202, the output power reduced according to generator.
After the output power of generator reduces, there are correspondences with load for the output power reduced.In output power
After reduction, corresponding load is transferred to energy-storage system.Wherein, the transfer rate of load is corresponding with preset ramp rate, with into
One step ensures the stability of load transfer.
The main power source switching method of embodiment two further includes step in one of the embodiments,：
If the output power of generator is the second predetermined target value, generator is closed.
When the output power of generator is reduced to the second predetermined target value, load has been transferred to energy-storage system,.It is controllable
Generator shuts down and disconnects grid-connected switch, to reduce the energy consumption of generator.
The method that the main power source of embodiment two is switched to energy-storage system by generator, by energy-storage system by determining active reactive mould
Formula switches to constant voltage frequency mode, and generator is switched to by constant voltage frequency mode and determines active reactive pattern.Simultaneously will
The output power of generator is reduced to the second predetermined target value, and the output power reduced according to generator, will be corresponding negative
Lotus is transferred to energy-storage system.In micro-capacitance sensor off-grid operation, without relying on the generator for having droop control or energy-storage system i.e.
It can be achieved the main power source in micro-capacitance sensor switching to energy-storage system from generator.Based on this, main power source is easy to implement from generator
To energy-storage system switching while, be effectively reduced main power source switching cost.
Embodiment three
Fig. 3 is that the main power source of embodiment three is switched to the structure drawing of device of generator by energy-storage system, as shown in figure 3, packet
Include module 300 to 303：
Generating voltage adjusts module 300, the generating voltage for adjusting generator；
Further include engine start module in one of the embodiments, for starting generator.
Cutting-in control module 301 is used for when generating voltage is consistent with the reference voltage of micro-capacitance sensor, by generator and in a subtle way
Power grid；
Power ascension module 302, the output power for promoting generator；
Power ascension module 302 is used to promote generator according to preset ramp rate in one of the embodiments,
Output power, until the output power of generator is consistent with the first predetermined target value.
First mode handover module 303, for when the output power of generator is consistent with the first predetermined target value, will send out
Motor by determining active reactive pattern switching to constant voltage frequency mode, and by micro-capacitance sensor as the energy-storage system of main power source by fixed
Electric voltage frequency pattern switching is to determining active reactive pattern.
Above-mentioned main power source is switched to the device of generator by energy-storage system, adjusts the generating voltage of generator until power generation electricity
When pressure is consistent with the reference voltage of micro-capacitance sensor, generator is incorporated to micro-capacitance sensor.The output power of generator is promoted simultaneously until hair
When the output power of motor is consistent with the first predetermined target value, by generator by determining active reactive pattern switching to constant voltage frequency
Pattern, and energy-storage system will be switched to by constant voltage frequency mode and determine active reactive pattern.In micro-capacitance sensor off-grid operation, nothing
The generator for having droop control or energy-storage system need to be relied on to can be realized to switch the main power source in micro-capacitance sensor from energy-storage system
To generator.Based on this main power source is effectively reduced while being easy to implement switching of the main power source from energy-storage system to generator
The cost of switching.
Example IV
Fig. 4 is that the main power source of example IV is switched to the structure drawing of device of energy-storage system by generator, as shown in figure 4, packet
Include module 400 to 402：
Second mode handover module 400, for that will be incorporated to the energy-storage system of micro-capacitance sensor by determining active reactive pattern switching
To constant voltage frequency mode, and surely active nothing will be switched to by constant voltage frequency mode as the generator of main power source in micro-capacitance sensor
Work(pattern；
Power reduction module 401, for the output power of generator to be reduced to the second predetermined target value；
Power reduction module 401 is used to reduce generator according to preset ramp rate in one of the embodiments,
Output power, until the output power of generator is consistent with the second predetermined target value.
Load shift module 402, the output power for being reduced according to generator will be corresponding with the output power of reduction
Load be transferred to energy-storage system.
Further include generator closedown module in one of the embodiments, for being second in the output power of generator
When predetermined target value, generator is closed.
Above-mentioned main power source is switched to the device of energy-storage system by generator, and energy-storage system is cut by determining active reactive pattern
Constant voltage frequency mode is shifted to, and generator is switched to by constant voltage frequency mode and determines active reactive pattern.It simultaneously will power generation
The output power of machine is reduced to the second predetermined target value, and the output power reduced according to generator, and corresponding load is turned
Move to energy-storage system.In micro-capacitance sensor off-grid operation, without relying on the generator for having droop control or energy-storage system can be real
The main power source in micro-capacitance sensor is now switched into energy-storage system from generator.Based on this, main power source is easy to implement from generator to storage
While the switching of energy system, it is effectively reduced the cost of main power source switching.
Embodiment five
Fig. 5 is that the main power source of embodiment five is switched to the system construction drawing of generator by energy-storage system, as shown in figure 5, packet
Include monitoring system 500, energy-storage system 501 and generator 502；
Monitoring system 500 connects generator 502 by hard contact connection type；
Monitoring system 500 is separately connected generator 502 by hard contact connection type in one of the embodiments,.Its
In, monitoring system 500 can send enabling signal by hard contact connection type to generator 502, be opened with controlling generator 602
It is dynamic.Monitoring system 500 can also be by hard contact connection type to 502 sending mode switching command of generator, to control generator
It is converted to constant voltage frequency mode by determining active reactive pattern.Engine 502 is improved by hard contact connection type based on this
Start the success rate and reliability with pattern conversion.
Energy-storage system 501 connects generator 502 by hard contact connection type；
Energy-storage system 501 connects generator 502 by hard contact connection type in one of the embodiments,.It is generating electricity
After the conversion of 502 emergence pattern of machine, generator 502 is by hard contact sending mode switching command to energy-storage system 501, so that energy storage
System 501 is converted to from constant voltage frequency mode determines active reactive pattern.
In one of the embodiments, programmable logic controller (PLC), programmable logic controller (PLC) are provided on generator 502
By hard contact connection type reception pattern switching command, control generator 502 carries out pattern switching, and Programmable logical controller is also
For when generator 502 carries out pattern switching, being referred to the switching of 501 sending mode of energy-storage system by hard contact connection type
It enables, so that energy-storage system 501 carries out pattern switching.
Fig. 6 is the conversion logic figure that main power source is switched to generator by energy-storage system, as shown in fig. 6, monitoring system 500 is logical
Contact really up to the mark sends enabling signal to generator, and generator starts according to enabling signal.Then monitoring system 500 passes through hard contact
Sending mode switching command to generator 502, generator 502 is instructed according to pattern switching from active reactive pattern switching is determined to calmly
Electric voltage frequency pattern, by hard contact sending mode switching command to energy-storage system 501 after the conversion of 502 emergence pattern of generator,
Energy-storage system 501, which is switched to according to pattern switching instruction from constant voltage frequency mode, determines active reactive pattern.
Monitoring system 500 is used to adjust the generating voltage of generator 502, and the output power for promoting generator 502；
Monitoring system 500 also connects generator 502 by 485 communication modes in one of the embodiments, to generator
502 transmission powers promote instruction and voltage regulating command, so that generator 502 is instructed according to power ascension (with default slope speed
Rate) output power is promoted to first object preset value, generating voltage is adjusted according to voltage regulating command.
Monitoring system 500 is additionally operable to the pattern of switching generator 502；
Generator 502 is used for when emergence pattern switches, and control energy-storage system 501 carries out pattern switching.
The system that above-mentioned main power source is switched to generator 502 by energy-storage system 501 is adjusted by monitoring system 500 and is sent out
The generating voltage and output power of motor, and 502 carry out pattern conversion of generator is controlled, it realizes main under micro-capacitance sensor off-grid operation
The switching of power supply has the energy-storage system and generator of droop control without relying on, be effectively reduced main power source switching at
This.Meanwhile it when the progress pattern switching of generator 502, directly controlling energy-storage system 501 and carrying out pattern switching, without passing through monitoring
System 500 carries out differentiating reliability, stability and the efficiency pass on and improve main power source switching to carry out pattern switching.
Embodiment six
Fig. 7 is that the main power source of embodiment five is switched to the system construction drawing of generator by energy-storage system, as shown in fig. 7, packet
Include monitoring system 600, energy-storage system 601 and generator 602；
Monitoring system 600 is separately connected energy-storage system 601 and generator 602 by hard contact connection type；
Energy-storage system 601 connects generator 602 by hard contact connection type；
Monitoring system 600 for reducing generator 602 output power, and for switching the pattern of energy-storage system 601；
Monitoring system 600 connects generator 602 by 485 communication modes in one of the embodiments, to generator
602 transmission powers reduce instruction, so that generator 602 is instructed according to power ascension reduces output power (preset ramp rate)
To the second target preset value.
For energy-storage system 601 when switching for emergence pattern, control generator 601 carries out pattern switching.
Monitoring system 600 is separately connected energy-storage system 601 by hard contact connection type in one of the embodiments,.
Wherein, monitoring system 600 can also be by hard contact connection type to 601 sending mode switching command of energy-storage system, to control storage
Can system 601 converted by constant voltage frequency mode to determining active reactive pattern.It is improved by hard contact connection type based on this
The success rate and reliability of 601 pattern of energy-storage system conversion.
Energy-storage system 601 connects generator 602 by hard contact connection type in one of the embodiments,.In energy storage
After the conversion of 601 emergence pattern of system, energy-storage system 601 is by hard contact sending mode switching command to generator 602, so that storage
Energy system 601 is converted to constant voltage frequency mode from active reactive pattern is determined.
Fig. 8 is the conversion logic figure that main power source is switched to energy-storage system by generator, as shown in figure 8, monitoring system 600 is logical
To energy-storage system 601, energy-storage system 601 is instructed according to pattern switching from determining active reactive contact sending mode switching command really up to the mark
Pattern switching passes through hard contact sending mode switching command to constant voltage frequency mode after the conversion of 601 emergence pattern of energy-storage system
To generator 602, generator 602, which is switched to according to pattern switching instruction from constant voltage frequency mode, determines active reactive pattern.
In one of the embodiments, as shown in figure 8, monitoring system 600 also sends shutdown command to hair by hard contact
Motor 602, so that generator 602 is closed according to shutdown command.
The system that above-mentioned main power source is switched to energy-storage system by generator controls energy-storage system by monitoring system 600
601 carry out pattern conversion, realize the switching of the main power source under micro-capacitance sensor off-grid operation, without relying on the storage for having droop control
Energy system and generator are effectively reduced the cost of main power source switching.Meanwhile when the progress pattern switching of energy-storage system 601, directly
It controls generator 602 and carries out pattern switching, differentiate without passing through monitoring system 600 and pass on to carry out pattern switching, promoted
Reliability, stability and the efficiency of main power source switching.
Embodiment seven
Fig. 9 is the main power source switching system structure chart of embodiment seven, as shown in figure 9, including monitoring system 700, energy storage system
System 701 and generator 702；
Monitoring system 700 is separately connected energy-storage system 701 and generator 702 by hard contact connection type；
Energy-storage system 701 connects generator 702 by hard contact connection type；
Monitoring system 700 is used to adjust the generating voltage of generator 702, and for promoting or reducing the defeated of generator 702
Go out power；
Monitoring system 700 is additionally operable to the pattern of switching generator 702 or energy-storage system 701；
Generator 702 is used for when emergence pattern switches, and control energy-storage system 701 carries out pattern switching；
Energy-storage system 701 is used for when emergence pattern switches, and control generator 702 carries out pattern switching.
Above-mentioned main power source switching system, by monitoring system 700 control one of energy-storage system 701 or generator 702 into
Row pattern is converted, and realizes the switching of the main power source under micro-capacitance sensor off-grid operation, without relying on the energy storage system for having droop control
System and generator are effectively reduced the cost of main power source switching.Meanwhile energy-storage system 701 (generator 702) carries out pattern switching
When, directly control generator 702 (energy-storage system 701) carry out pattern switching, without pass through monitoring system carry out differentiate pass on
Pattern switching is carried out, reliability, stability and the efficiency of main power source switching are improved.
Each technical characteristic of above example can be combined arbitrarily, to keep description succinct, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield is all considered to be the range of this specification record.
Only several embodiments of the present invention are expressed for above example, the description thereof is more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from present inventive concept, various modifications and improvements can be made, these are all within the scope of protection of the present invention.
Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of method that main power source is switched to generator by energy-storage system, which is characterized in that including step：
Adjust the generating voltage of generator；
If the generating voltage is consistent with the reference voltage of micro-capacitance sensor, generator is incorporated to micro-capacitance sensor；
Promote the output power of the generator；
If the output power of the generator is consistent with first predetermined target value, by the generator by determining active reactive
Pattern switching to constant voltage frequency mode, and by the micro-capacitance sensor as the energy-storage system of main power source by constant voltage frequency mode
It switches to and determines active reactive pattern.
2. the method that main power source according to claim 1 is switched to generator by energy-storage system, which is characterized in that described to carry
Rise the process of the output power of generator, including step：
The output power of generator is promoted according to preset ramp rate, until the output power of the generator and first is preset
Desired value is consistent.
3. a kind of method that main power source is switched to energy-storage system by generator, which is characterized in that including step：
It will be incorporated to the energy-storage system of micro-capacitance sensor by determining active reactive pattern switching to constant voltage frequency mode, and will be in micro-capacitance sensor
Generator as main power source is switched to by constant voltage frequency mode determines active reactive pattern；
The output power of the generator is reduced to the second predetermined target value；
According to the output power that the generator is reduced, corresponding load is transferred to energy-storage system.
4. the method that main power source according to claim 3 is switched to energy-storage system by generator, which is characterized in that described to incite somebody to action
The step of output power of generator is reduced to the second predetermined target value, including step：
The output power of generator is reduced according to preset ramp rate, until the output power of the generator and second is preset
Desired value is consistent.
5. the method that main power source according to claim 3 is switched to energy-storage system by generator, which is characterized in that further include
Step：
If the output power of the generator is second predetermined target value, generator is closed.
6. a kind of main power source is switched to the device of generator by energy-storage system, which is characterized in that including：
Generating voltage adjusts module, the generating voltage for adjusting generator；
Cutting-in control module is used for when the generating voltage is consistent with the reference voltage of micro-capacitance sensor, by generator and electric in a subtle way
Net；
Power ascension module, the output power for promoting generator；
First mode handover module is used for when the output power of generator is consistent with first predetermined target value, will be described
Generator is by determining active reactive pattern switching to constant voltage frequency mode, and by the energy storage system as main power source in the micro-capacitance sensor
System is switched to by constant voltage frequency mode determines active reactive pattern.
7. a kind of main power source is switched to the device of energy-storage system by generator, which is characterized in that including：
Second mode handover module, for that will be incorporated to the energy-storage system of micro-capacitance sensor by determining active reactive pattern switching to constant voltage
Frequency mode, and determine active reactive pattern by being switched to by constant voltage frequency mode as the generator of main power source in micro-capacitance sensor；
Power reduction module, for the output power of generator to be reduced to the second predetermined target value；
Load shift module, the output power for being reduced according to generator will be corresponding with the output power of the reduction
Load is transferred to energy-storage system.
8. the system that a kind of main power source is switched to generator by energy-storage system, which is characterized in that including monitoring system, energy-storage system
And generator；
The monitoring system connects the generator by hard contact connection type；
The energy-storage system connects the generator by hard contact connection type；
The monitoring system is used to adjust the generating voltage of the generator, and the output power for promoting generator；
The monitoring system is additionally operable to switch the pattern of the generator；
The generator is used for when emergence pattern switches, and is controlled the energy-storage system and is carried out pattern switching.
9. the system that a kind of main power source is switched to energy-storage system by generator, which is characterized in that including monitoring system, energy-storage system
And generator；
The monitoring system is separately connected the energy-storage system and the generator by hard contact connection type；
The energy-storage system connects the generator by hard contact connection type；
The monitoring system for reducing generator output power, and for switching the pattern of the energy-storage system；
The energy-storage system controls the generator and carries out pattern switching when switching for emergence pattern.
10. a kind of main power source switching system, which is characterized in that including monitoring system, energy-storage system and generator；
The monitoring system is separately connected the energy-storage system and the generator by hard contact connection type；
The energy-storage system connects the generator by hard contact connection type；
The monitoring system is used to adjust the generating voltage of the generator, and the output work for promoting or reducing generator
Rate；
The monitoring system is additionally operable to switch the pattern of the generator or the energy-storage system；
The generator is used for when emergence pattern switches, and is controlled the energy-storage system and is carried out pattern switching；
The energy-storage system is used for when emergence pattern switches, and is controlled the generator and is carried out pattern switching.
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