CN109149609A - A kind of user side electric power dynamic compatibilization system and its control method - Google Patents
A kind of user side electric power dynamic compatibilization system and its control method Download PDFInfo
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- CN109149609A CN109149609A CN201810992522.2A CN201810992522A CN109149609A CN 109149609 A CN109149609 A CN 109149609A CN 201810992522 A CN201810992522 A CN 201810992522A CN 109149609 A CN109149609 A CN 109149609A
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- power
- fly wheel
- accumulation device
- energy accumulation
- electric power
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/30—Arrangements for balancing of the load in a network by storage of energy using dynamo-electric machines coupled to flywheels
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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
- H02J9/062—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 for AC powered loads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention provides a kind of user side electric power dynamic compatibilization system and its control method, which includes: the power of continual monitoring ac input end；When the power is less than the first power threshold, controls load equipment and other devices of the alternating current into system and power is provided, and charge to energy accumulation device for fly wheel；When the power is greater than or equal to the first power threshold, control energy accumulation device for fly wheel electric discharge, and control alternating current and energy accumulation device for fly wheel and provide power with other devices for the load equipment in system jointly.The system and its control method can realize to be supported on working condition or when multi-load works at the same time provides high-power support in short-term and achieve the effect that dynamic compatibilization in the case where user side does not increase power supply capacity.Compared to traditional electric power compatibilizing method, equipment investment is low, and the construction period is short.And capacity increasing system provided by the invention can be according to application demand, by the way of mostly set energy accumulation device for fly wheel parallel operation, system is with good expansibility.
Description
Technical field
The present invention relates to electric power dynamic compatibilization technical fields, more specifically, are related to a kind of user side electric power dynamic compatibilization
System and its control method.
Background technique
Power consumer is during carrying out production and operation, former because of the expansion of production capacity and the increase of power load
Apply for that the power supply capacity used is no longer satisfied current production and operation needs, needs to apply increasing on the basis of original and hold
Amount.The process of power consumer application electric power increase-volume is generally as follows: electricity consumption side needs to increase capacity, it is necessary to propose to supplier of electricity written
Application, and the related application data of electricity consumption side is provided, it can be carried out after supplier of electricity is approved after examination.User applies for electric power increase-volume,
It is long not only to declare and examine the time, but also needs payment devices to purchase, design, the expenses such as construction, is one and no small opens
Pin.
For some power consumers, base load usually can't exceed power supply capacity, but when its is high-power
When electrical equipment puts into operation, the limitation of maximum power supply capacity will be exceeded in short-term.The power consumption characteristics of these powerful devices are
Intermittence uses, and power is small when usually standby, and operating power is big when coming into operation, and the time of coming into operation every time is short.Such as it is curing
Institute field, uses with the development of science and technology, the Medical Devices such as CT, MRI, electron accelerator are introduced, these equipment just belong to greatly
The equipment that power frequently uses in short-term, the power consumed under standby operating conditions is simultaneously little, but consumes power in working condition
It increases sharply, the maximum capacity beyond the design of its power supply-distribution system.If guaranteeing the normal fortune of these large power-consuming equipments
Row, traditional solution is to power supply department application electric power increase-volume, then Utilities Electric Co. is surveyed after walking workflow examination and approval
It examines, design and constructs, it may be necessary to which replacement or newly-increased transformer replace old route and corresponding controller switching equipment.Not only consume
Duration, and capital investment is big.
Summary of the invention
In order to solve the problems, such as that the time brought by traditional user side electric power compatibilizing method is long, capital investment is high, this hair
It is bright to propose a kind of solution that user side electric power dynamic compatibilization is carried out using flywheel energy storage.
The purpose of the present invention can be realized by following technical measures:
First aspect present invention provides a kind of user side electric power dynamic compatibilization system, and the dynamic compatibilization system includes:
Alternating current and load equipment；
The ac input end being electrically coupled with city；
The ac output end coupled with load equipment；
The online double transform uninterrupted power supply coupled with the ac input end and the ac output end, it is described
The DC/AC inversion that online double transform uninterrupted power supply include: AC/DC rectifier, are coupled with the AC/DC rectifier
Device, high-pressure side are set to the two-way DC/DC module between the AC/DC rectifier and the DC/AC inverter；
The flywheel energy storage coupled with the low-pressure side of the two-way DC/DC module of online double transform uninterrupted power supply
Device, the energy accumulation device for fly wheel include: the two-way DC/AC current transformer connecting with the low-pressure side of the two-way DC/DC module, with
And the flywheel energy storage unit being connect with the two-way DC/AC AC side of converter；
The energy accumulation device for fly wheel is configured as not being able to satisfy the dynamic compatibilization system when the power supply capacity of the alternating current
In load equipment and other devices electric power demand when, be negative in the dynamic compatibilization system together with the alternating current
It carries equipment and other devices provides electric power；
Wherein, other described devices include online double transform uninterrupted power supply and flywheel energy storage dress
It sets.
Preferably, the dynamic compatibilization system further includes control module, is configured as executing following steps:
The power of the continual monitoring ac input end；
When the power of the ac input end is less than the first power threshold, the alternating current is controlled to the dynamic compatibilization system
Load equipment and other devices in system provide electric power, and charge to the energy accumulation device for fly wheel；And
When the power of the ac input end is greater than or equal to the first power threshold, controls the energy accumulation device for fly wheel and put
Electricity, and control the alternating current and the energy accumulation device for fly wheel is load equipment in the dynamic compatibilization system and other dresses jointly
Offer electric power is provided.
Preferably, described " when the power of the ac input end is less than the first power threshold, to control the alternating current to institute
State load equipment and other devices in dynamic compatibilization system and electric power be provided, and charge to the energy accumulation device for fly wheel "
Step includes:
When the power of the ac input end is less than the first power threshold, the two-way DC/DC module is controlled to described
Energy accumulation device for fly wheel output power simultaneously controls the power of its output and the load equipment in the dynamic compatibilization system and other dresses
The sum of electric power set is less than or equal to the first power threshold.
Preferably, described " when the power of the ac input end is greater than or equal to the first power threshold, to control described fly
Energy storage device electric discharge is taken turns, and controls the alternating current and the energy accumulation device for fly wheel is the load in the dynamic compatibilization system jointly
Equipment and other devices provide electric power " the step of include:
When the power of the ac input end is greater than or equal to the first power threshold, the function of the ac input end is controlled
Rate is the first power threshold, and controls the two-way DC/DC module to the DC/AC inverter output power and to control its defeated
The sum of power and the first power threshold out are equal to load equipment in the dynamic compatibilization system and other devices use electric work
The sum of rate.
It is highly preferred that controlling the flywheel when the power of the ac input end is greater than or equal to the first power threshold
Energy storage device electric discharge, and control the alternating current and the energy accumulation device for fly wheel is that load in the dynamic compatibilization system is set jointly
Standby and other devices are provided after electric power, further includes:
When the revolving speed of the flywheel of the energy accumulation device for fly wheel is lower than the first rotary speed threshold value, controls the two-way DC/AC and become
It flows device and stops power output or input.
Second aspect of the present invention provides a kind of control method of user side electric power dynamic compatibilization system, the control method
Include:
The power of the continual monitoring ac input end；
When the power of the ac input end is less than the first power threshold, the alternating current is controlled to the dynamic compatibilization system
Load equipment and other devices in system provide electric power, and charge to the energy accumulation device for fly wheel；And
When the power of the ac input end is greater than or equal to the first power threshold, controls the energy accumulation device for fly wheel and put
Electricity, and control the alternating current and the energy accumulation device for fly wheel is load equipment in the dynamic compatibilization system and other dresses jointly
Offer electric power is provided.
Preferably, described " when the power of the ac input end is less than the first power threshold, to control the alternating current to institute
State load equipment and other devices in dynamic compatibilization system and electric power be provided, and charge to the energy accumulation device for fly wheel "
Step includes:
When the power of the ac input end is less than the first power threshold, the charging function of the energy accumulation device for fly wheel is controlled
The sum of electric power of load equipment and other devices in rate and the dynamic compatibilization system is less than or equal to the first power-threshold
Value.
Preferably, described " when the power of the ac input end is greater than or equal to the first power threshold, to control described fly
Energy storage device electric discharge is taken turns, and controls the alternating current and the energy accumulation device for fly wheel is the load in the dynamic compatibilization system jointly
Equipment and other devices provide electric power " the step of include:
When the power of the ac input end is greater than or equal to the first power threshold, the function of the ac input end is controlled
Rate is the first power threshold, and the sum of discharge power and first power threshold for controlling the energy accumulation device for fly wheel is equal to described move
The sum of the electric power of load equipment and other devices in state capacity increasing system.
It is highly preferred that controlling the flywheel when the power of the ac input end is greater than or equal to the first power threshold
Energy storage device electric discharge, and control the alternating current and the energy accumulation device for fly wheel is that load in the dynamic compatibilization system is set jointly
Standby and other devices are provided after electric power, further includes:
When the revolving speed of the flywheel of the energy accumulation device for fly wheel is lower than the first rotary speed threshold value, the energy accumulation device for fly wheel is controlled
It neither discharges nor charges.
Compared with prior art, user side electric power dynamic compatibilization system provided by the invention and its control method have as follows
Advantage and effect:
1, technical solution provided by the invention can solve power consumer and be limited by power supply capacity, cannot use high-power use
The problem of electric equipment.And compared to traditional electric power compatibilizing method, technical solution provided by the invention is not needed to power supply department
It declares, eliminates report and rigister process, equipment investment is low, and the construction period is short.
2, technical solution provided by the invention is powered using online double transform uninterrupted power supply to load equipment, energy
Lasting, stable, continual power supply supply enough is provided for load equipment, good output waveform, output voltage quality is high, no matter loads
Equipment is mutated or presents when stablizing good band and carries characteristic.
3, the energy accumulation device for fly wheel that technical solution of the present invention uses, is able to carry out frequent charge and discharge, mentions for load equipment
For high-power power supply support, have the advantages that charge-discharge electric power greatly, long service life.And it can be according to application demand, using more
The mode of energy accumulation device for fly wheel parallel operation is covered, to improve the output power of flywheel energy storage system or extend flywheel energy storage system
Discharge time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of user side electric power dynamic compatibilization system provided in an embodiment of the present invention.
Fig. 2 is that a kind of energy of user side electric power dynamic compatibilization system provided in an embodiment of the present invention flows to schematic diagram.
Fig. 3 is that another energy of user side electric power dynamic compatibilization system provided in an embodiment of the present invention flows to schematic diagram.
Fig. 4 is the flow chart of the control method of user side electric power dynamic compatibilization system provided in an embodiment of the present invention.
Fig. 5 is the stream of the preferred embodiment of the control method of user side electric power dynamic compatibilization system provided in an embodiment of the present invention
Cheng Tu.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawing and specific implementation
Invention is further described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
In order to keep the narration of this disclosure more detailed with it is complete, below for embodiments of the present invention and specific real
It applies example and proposes illustrative description；But this not implements or uses the unique forms of the specific embodiment of the invention.Embodiment
In cover multiple specific embodiments feature and to construction with operate these specific embodiments method and step it is suitable with it
Sequence.However, can also reach identical or impartial function and sequence of steps using other specific embodiments.
User side electric power dynamic compatibilization system described in the embodiment of the present invention is particularly suitable for following situations: when load is set
When standby standby or shutdown status, required power is smaller, and the power supply capacity of alternating current can satisfy load equipment under this state
Power demand is powered from alternating current to load equipment, while alternating current also provides power to other devices in system, in the present invention
Other devices are included in the double transform uninterrupted power supply of line and energy accumulation device for fly wheel, so that it is operated normally, and alternating current
Dump power be then energy accumulation device for fly wheel charging；It is required when load equipment working condition or when multi-load equipment works at the same time
The power wanted is larger, and the power supply capacity of alternating current is limited, is not able to satisfy the power demand of load equipment in this case, and flywheel stores up at this time
Energy device electric discharge, powers together with alternating current to load equipment, and other devices into system are provided so that it was operated normally
Electric power.
The structural schematic diagram of user side electric power dynamic compatibilization system shown in FIG. 1 is please referred to, which includes:
Alternating current 10, the ac input end 10a coupled with alternating current 10, load equipment 20, the ac output end coupled with load equipment 20
20b；The online double transform uninterrupted power supply 30 coupled with ac input end 10a and ac output end 20b, and with it is online
The energy accumulation device for fly wheel 40 that double transform uninterrupted power supply 30 couple, the energy accumulation device for fly wheel 40 are configured as when alternating current 10
Power supply capacity be not able to satisfy the load equipment 20 in the dynamic compatibilization system and other devices (including online double transforms not between
Power off source device 30 and energy accumulation device for fly wheel 40) electric power when, be jointly negative in the dynamic compatibilization system with alternating current 10
It carries equipment 20 and other devices is powered.
In the present invention, defining " the first power threshold " is the maximum power supply capacity of alternating current in normal state.
Alternating current 10 provides electric power, city by load equipment 20 of the ac input end 10a into system and other devices
Electricity 10 needs watt level to be offered to be changed according to the watt level of ac input end 10a, and the power of ac input end 10a is big
The electric power demand of the small load equipment 20 according in system and other devices determines, and can only be more than in short-term alternating current most
Big power supply capacity.That is when load equipment 20 is in working condition, the function of load equipment 20 and other devices in system
Rate demand can be more than the maximum power supply capacity of alternating current 10, and system will monitor that the performance number of ac input end 10a is greater than first
The case where power threshold, system will control the electric discharge of energy accumulation device for fly wheel 40 at this time, so that the power of ac input end 10a is down to
Continue the flywheel storage to be no more than its maximum power supply capacity and be powered less than or equal to the first power threshold, that is, alternating current 10
Remaining electric power needed for load equipment 20 and other devices in energy 40 offer system of device.
Wherein, which includes: AC/DC rectifier 301 and DC/AC inverter
It is connected between 302, AC/DC rectifiers 301 and DC/AC inverter 302 by DC bus 304.Alternating current 10 will exchange power supply
It by AC rectification is direct current by AC/DC rectifier 301, then will by DC/AC inverter 302 to ac input end 10a
DC inverter is powered at stable alternating current to load equipment 20.
Online double transform uninterrupted power supply 30 further include: high-pressure side is set to the two-way DC/DC of DC bus 304
Module 303, the two-way DC/DC module 303 are used for when alternating current 10 is that energy accumulation device for fly wheel 40 charges there are also remaining power supply capacity,
The high voltage direct current after AC/DC rectifier 301 rectifies is received, and is converted into being suitble to the low-voltage DC of energy accumulation device for fly wheel 40,
Think that energy accumulation device for fly wheel 40 charges；And when the load that the power supply capacity of alternating current 10 is not able to satisfy in the dynamic compatibilization system is set
Standby 20 and other devices power demand when, receive the discharge power of energy accumulation device for fly wheel 40, give the dynamic together with alternating current 10
Load equipment 20 and other devices in capacity increasing system are powered.
Wherein, which includes: that the two-way DC/AC connecting with the low-pressure side of two-way DC/DC module 303 becomes
Device 401 is flowed, and exchanges the flywheel energy storage unit 402 that side is connect with the two-way DC/AC current transformer 401.Two-way DC/AC current transformer
401 for receiving two-way DC/DC module 303 when alternating current 10 is that energy accumulation device for fly wheel 40 charges there are also remaining power supply capacity
Output power is that flywheel energy storage unit 202 provides charge power；And increase when the power supply capacity of alternating current 10 is not able to satisfy the dynamic
When the power demand of load equipment 20 and other devices in appearance system, the discharge power of flywheel energy storage unit 202 is received, then
To two-way DC/DC module 303, the load equipment 20 and other devices given in the dynamic compatibilization system together with alternating current 10 are supplied for output
Electricity.
In addition, two-way DC/AC current transformer 401 is additionally configured to terminate when the revolving speed of flywheel is lower than the first rotary speed threshold value
The discharge condition of energy accumulation device for fly wheel 40, energy accumulation device for fly wheel 40 is in standby at this time, is neither charged nor is discharged.
In some embodiments possibles, which further includes control module, which is configured as
Execute following steps:
The power of continual monitoring ac input end 10a；When the power of ac input end 10a is less than the first power threshold
When, it controls load equipment 20 of the alternating current 10 into the dynamic compatibilization system and other devices provides electric power, and by alternating current 10
Remaining power supply capacity export to energy accumulation device for fly wheel 40, charge for it, referring specifically to Fig. 2 shows user side electric power dynamic increase
A kind of energy of appearance system flows to schematic diagram；When the power of ac input end 10a is greater than or equal to the first power threshold, control
Energy accumulation device for fly wheel 40 discharges, and controls alternating current 10 and energy accumulation device for fly wheel 40 and set jointly for the load in the dynamic compatibilization system
Standby 20 provide electric power with other devices.Referring specifically to another energy of the user side electric power dynamic compatibilization system shown in Fig. 3
Amount flows to schematic diagram.
Specifically, which is configured as executing following steps:
The power of continual monitoring ac input end 10a, the power monitored herein correspond to inscribe at this, system
In load equipment 20 and other devices the sum of electric power, and other devices in system include online double transforms not between
Power off source device 30 and energy accumulation device for fly wheel 40 etc..
When the power of ac input end 10a is less than the first power threshold P0, two-way DC/DC module 303 is controlled to flywheel
40 output power P3 of energy storage device and control its output power and system in load equipment 20 electric power P1 and other
The sum of electric power P2 of device is less than or equal to the first power threshold, i.e. P1+P2+P3≤P0；When the function of ac input end 10a
When rate is greater than or equal to the first power threshold P0, the power of control ac input end 10a is the first power threshold, and is controlled two-way
DC/DC module 303 is to 302 output power P3 of DC/AC inverter and controls power and the sum of the first power threshold etc. that it is exported
The electric power P1 of load equipment 20 in system and the sum of the electric power P2, i.e. P3+P0=P1+P2 of other devices.
Further, after energy accumulation device for fly wheel 40 discharges a period of time, when the revolving speed of flywheel is lower than the first revolving speed, control
It makes the two-way stopping power output of DC/AC current transformer 401 or input, energy accumulation device for fly wheel 40 is in standby, neither charges
It does not discharge.
Above-mentioned first revolving speed can be set according to demand, such as can be set to the 30-40% of flywheel maximum speed.
Above-mentioned control module includes programmable processor, and with software program in the programmable processor, which can be held
Row functions described herein.Specifically, the software program can network in electronic format by way of be downloaded in processor；
Alternatively, the software program can store on such as storage mediums such as magnetic memory, optical memory or electronic memory.Some
In embodiment, which can also include the additional or embedded hardware module for accelerating it to operate.Aforementioned hardware mould
Block may include discreet component, at least one Field Programmable Gate Array (FPGA) and/or at least one specific integrated circuit
(ASIC)。
In some embodiments possibles of the invention, which further includes static state
Bypass, when in case any portion breaking down in AC/DC rectifier 301 or DC/AC inverter 302, alternating current 10 can be by quiet
State is bypassed powers to load equipment 20.
The user side dynamic compatibilization system of above-mentioned introduction take full advantage of that energy accumulation device for fly wheel has it is high-power frequently
Charging and discharging capabilities and online double transform uninterrupted power supply can be monitored in real time the power of ac input end, carry out dynamic function
Rate distribute the characteristics of, for load equipment in the operating condition or multi-load equipment work when high-power support in short-term is provided, realization
Achieve the effect that dynamic compatibilization in the case where user side does not increase power supply capacity, compared to traditional electric power compatibilizing method,
It eliminates and is declared to power supply department and process waiting for approval, equipment investment is low, and the construction period is short.
Fig. 4 is that process is shown in FIG. 4 according to the control method of the user side dynamic compatibilization system of the embodiment of the present invention
Scheme S500, can support that the following two kinds includes one of control model in described control method or a variety of:
(a) charge mode: when the power of ac input end is less than the first power threshold, alternating current is controlled into the system
Load equipment and other devices provide power, and control alternating current and charge to energy accumulation device for fly wheel, in charge power and system
The sum of electric power of load equipment and other devices is less than or equal to the first power threshold；
(b) discharge mode: when the power of ac input end is greater than or equal to the first power threshold, control flywheel energy storage dress
Put electricity, together with alternating current in system load equipment and other devices power, and the electric discharge function of energy accumulation device for fly wheel are provided
The sum of rate and the first power threshold are equal to the sum of load equipment and electric power of other devices in system.
Method shown in flow chart S500 is since monitoring step S501, in monitoring step S501, continual prison
Survey the power of ac input end.When monitoring the power, constantly ensure that appropriate power is provided to the load in system and sets
Standby and other devices.Subsequently into judgment step S502, judging that the power whether less than the first power threshold, works as judging result
When to be, infer that the power supply capacity of alternating current can satisfy the load equipment in system and electric power needed for other devices, and
There is surplus power for energy accumulation device for fly wheel charging, which enters charge mode.When the judgment result is no, infer
Electric power needed for the power supply capacity of alternating current is not able to satisfy the load equipment in system and other devices, needs flywheel energy storage to fill
Electricity is put, is that the load equipment and other devices in system are powered together with alternating current, which enters electric discharge
Mode.
Further, after dynamic compatibilization system enters discharge mode, further includes: judge whether the revolving speed of the flywheel is lower than
First rotary speed threshold value.
Further, it please refers to shown in Fig. 5, on the basis of flow chart shown in Fig. 4, after step S504, is walked into judgement
Rapid S505, judges whether the revolving speed of the flywheel is lower than the first rotary speed threshold value, when judgment step S505 result is no, infers flywheel
Energy storage device can also continue to provide power, and dynamic compatibilization system continues discharge mode；When judgment step S505 result, which is, is,
Control energy accumulation device for fly wheel enters standby mode, neither charges nor discharges, dynamic compatibilization system terminates discharge mode.
Control method provided by the invention by the power of real-time monitoring ac input end, by the power of ac input end with
First power threshold of setting is compared, and then controls the working condition of energy accumulation device for fly wheel, is realized and is not increased in user side
Achieve the effect that dynamic compatibilization in the case where adding power supply capacity, compared to traditional electric power compatibilizing method, eliminates to power supply
Door is declared and process waiting for approval, and equipment investment is low, and the construction period is short.And it is based on above-mentioned regulative mode, it can according to need
Using more set energy accumulation device for fly wheel parallel operations, to improve the output power of flywheel energy storage system or extend flywheel energy storage system
Discharge time, system are with good expansibility.
Specific embodiment:
Alternating current maximum power supply capacity is 40kW.Required power is about 5kW, working condition when institute when load equipment standby mode
Needing maximum power is 150kW.The rated output power of online double transform uninterrupted power supply is 200kW.Flywheel energy storage dress
The specified charge-discharge electric power set is 125kW.User side electric power dynamic compatibilization method of the invention is as follows:
(1) power of online double transform uninterrupted power supply real-time detection ac input ends；
(2) when the power of ac input end is less than 40kW (at this point, the electric power of load equipment is 5kW), it is lower than city
The maximum power supply capacity of electricity, the power as needed for the load equipment and other devices in alternating current offer system, while controlling two-way
For DC/DC module to energy accumulation device for fly wheel output power, energy accumulation device for fly wheel is in charged state, and the total output power of alternating current does not surpass
Cross 40kW；
(3) when the power of ac input end is greater than or equal to 40kW (at this point, the electric power of load equipment be 150kW),
Higher than alternating current maximum power supply capacity 40kW when, alternating current provides input power by 40kW, while controlling two-way DC/DC module to inverse
Become device output power, energy accumulation device for fly wheel is in discharge condition.Alternating current and energy accumulation device for fly wheel are that the load in system is set jointly
The power supply of standby and other devices, the total output power of alternating current are no more than 40kW, and the part of underpower is mentioned by energy accumulation device for fly wheel
For.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of user side electric power dynamic compatibilization system, which is characterized in that the dynamic compatibilization system includes:
Alternating current and load equipment；
The ac input end being electrically coupled with city；
The ac output end coupled with load equipment；
The online double transform uninterrupted power supply coupled with the ac input end and the ac output end, it is described online
DC/AC inverter, the height that double transform uninterrupted power supply include: AC/DC rectifier, are coupled with the AC/DC rectifier
Side is pressed to be set to the two-way DC/DC module between the AC/DC rectifier and the DC/AC inverter；
The flywheel energy storage coupled with the low-pressure side of the two-way DC/DC module of online double transform uninterrupted power supply fills
It sets, the energy accumulation device for fly wheel includes: the two-way DC/AC current transformer connecting with the low-pressure side of the two-way DC/DC module, and
The flywheel energy storage unit being connect with the two-way DC/AC AC side of converter；
The energy accumulation device for fly wheel is configured as not being able to satisfy in the dynamic compatibilization system when the power supply capacity of the alternating current
It is that the load in the dynamic compatibilization system is set together with the alternating current when electric power demand of load equipment and other devices
Standby and other devices provide electric power；
Wherein, other described devices include online double transform uninterrupted power supply and the energy accumulation device for fly wheel.
2. user side electric power dynamic compatibilization system as described in claim 1, which is characterized in that the dynamic compatibilization system also wraps
Control module is included, is configured as executing following steps:
The power of the continual monitoring ac input end；
When the power of the ac input end is less than the first power threshold, the alternating current is controlled into the dynamic compatibilization system
Load equipment and other devices provide electric power, and to the energy accumulation device for fly wheel charge；And
When the power of the ac input end is greater than or equal to the first power threshold, the energy accumulation device for fly wheel electric discharge is controlled,
And control the alternating current and the energy accumulation device for fly wheel is load equipment in the dynamic compatibilization system and other devices jointly
Electric power is provided.
3. user side electric power dynamic compatibilization system as claimed in claim 2, which is characterized in that described " when the exchange inputs
When the power at end is less than the first power threshold, load equipment of the alternating current into the dynamic compatibilization system and other dresses are controlled
Offer electric power is provided, and is charged to the energy accumulation device for fly wheel " the step of include:
When the power of the ac input end is less than the first power threshold, the two-way DC/DC module is controlled to the flywheel
Energy storage device output power simultaneously controls the power of its output and load equipment and other devices in the dynamic compatibilization system
The sum of electric power is less than or equal to the first power threshold.
4. user side electric power dynamic compatibilization system as claimed in claim 2, which is characterized in that described " when the exchange inputs
When the power at end is greater than or equal to the first power threshold, the energy accumulation device for fly wheel electric discharge is controlled, and control the alternating current and institute
State energy accumulation device for fly wheel and provide electric power with other devices for the load equipment in the dynamic compatibilization system jointly " the step of
Include:
When the power of the ac input end is greater than or equal to the first power threshold, the power for controlling the ac input end is
First power threshold, and control the two-way DC/DC module to the DC/AC inverter output power and control what it was exported
The sum of power and the first power threshold be equal to the dynamic compatibilization system in load equipment and other devices electric power it
With.
5. user side electric power dynamic compatibilization system as claimed in claim 2, which is characterized in that in the function of the ac input end
When rate is greater than or equal to the first power threshold, the energy accumulation device for fly wheel electric discharge is controlled, and control the alternating current and the flywheel
Energy storage device is jointly for the load equipment in the dynamic compatibilization system and after other devices provide electric power, further includes:
When the revolving speed of the flywheel of the energy accumulation device for fly wheel is lower than the first rotary speed threshold value, the two-way DC/AC current transformer is controlled
Stop power output or input.
6. a kind of control method of user side electric power dynamic compatibilization system described in claim 1, which is characterized in that the control
Method includes:
The power of the continual monitoring ac input end；
When the power of the ac input end is less than the first power threshold, the alternating current is controlled into the dynamic compatibilization system
Load equipment and other devices provide electric power, and to the energy accumulation device for fly wheel charge；And
When the power of the ac input end is greater than or equal to the first power threshold, the energy accumulation device for fly wheel electric discharge is controlled,
And control the alternating current and the energy accumulation device for fly wheel is load equipment in the dynamic compatibilization system and other devices jointly
Electric power is provided.
7. the control method of user side electric power dynamic compatibilization system as claimed in claim 6, which is characterized in that described " to work as institute
When stating the power of ac input end less than the first power threshold, controls load of the alternating current into the dynamic compatibilization system and set
Standby and other devices provide electric power, and charge to the energy accumulation device for fly wheel " the step of include:
When the power of the ac input end is less than the first power threshold, control the charge power of the energy accumulation device for fly wheel with
The sum of electric power of load equipment and other devices in the dynamic compatibilization system is less than or equal to the first power threshold.
8. the control method of user side electric power dynamic compatibilization system as claimed in claim 6, which is characterized in that described " to work as institute
When stating the power of ac input end more than or equal to the first power threshold, the energy accumulation device for fly wheel electric discharge is controlled, and control institute
It states alternating current and the energy accumulation device for fly wheel and provides electricity consumption with other devices for the load equipment in the dynamic compatibilization system jointly
The step of power " includes:
When the power of the ac input end is greater than or equal to the first power threshold, the power for controlling the ac input end is
First power threshold, and the sum of discharge power and first power threshold for controlling the energy accumulation device for fly wheel increases equal to the dynamic
The sum of the electric power of load equipment and other devices in appearance system.
9. the control method of user side electric power dynamic compatibilization system as claimed in claim 6, which is characterized in that in the exchange
When the power of input terminal is greater than or equal to the first power threshold, the energy accumulation device for fly wheel electric discharge is controlled, and control the alternating current
With the energy accumulation device for fly wheel jointly in the dynamic compatibilization system load equipment and other devices provide electric power it
Afterwards, further includes:
When the revolving speed of the flywheel of the energy accumulation device for fly wheel is lower than the first rotary speed threshold value, the energy accumulation device for fly wheel is controlled neither
Electric discharge is not also charged.
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