CN108054780A - Micro-capacitance sensor energy management system, method and device - Google Patents
Micro-capacitance sensor energy management system, method and device Download PDFInfo
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Classifications
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- H02J3/382—
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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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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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
- H02J3/32—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
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of micro-capacitance sensor energy management system, method and devices, it is related to microgrid field, the micro-capacitance sensor energy management system, AC/DC converters are connected between the dc bus and power distribution network of micro-capacitance sensor, DC/DC reversible transducers are connected between the energy-storage battery and dc bus of micro-capacitance sensor；AC/DC converters and DC/DC reversible transducers are used to monitor the voltage and power of the exchange side of AC/DC converters, the DC side of AC/DC converters, the bus bar side of DC/DC reversible transducers and dc bus；When the virtual voltage of dc bus side is more than or less than the rated voltage of dc bus side, the virtual voltage of AC/DC converters and/or DC/DC reversible transducers adjustment dc bus side to rated voltage.The present invention can improve power quality and utilization rate of electrical.
Description
Technical field
The present invention relates to microgrid control technology field, more particularly, to a kind of micro-capacitance sensor energy management system, method and dress
It puts.
Background technology
Micro-capacitance sensor can realize power-balance control as complete miniature electric system by the control of itself and management function
The function of system, system optimized operation, default detection and protection, Power quality management etc..What micro-capacitance sensor was applied at present is main
One of place is large scale industry garden, to meet the needs of industrial user is to new energy consumption, economic electricity consumption, high quality electric energy.
Applied to the micro-grid system of industrial park, generally including power grid distribution, distributed new power generation, alternating current-direct current load, inversion
Device, energy storage device etc..With increasing increasingly for electric vehicle ownership, new industrial park can include large-scale electricity again
Electrical automobile, electric vehicle are participated in as a kind of key element of the double properties with load and power supply in microgrid.It is such micro-
It is increasingly complex to the coordinated management in various energy resources source, a variety of loads and the more traditional micro-capacitance sensor of control in net system, not only to examine
Consider the equilibrium for being transported to electricity, more to combine electric vehicle, the actual conditions of energy storage device and be managed scheduling, there are power quality,
The problem of utilization rate and the low efficiency of management.
The content of the invention
In view of this, it is an object of the invention to provide a kind of micro-capacitance sensor energy management system, method and device, to improve
Power quality and utilization rate of electrical, while intelligent management is carried out to the extensive electric vehicle in industrial park.
In a first aspect, an embodiment of the present invention provides a kind of micro-capacitance sensor energy management system, the dc bus of micro-capacitance sensor with
AC/DC converters are connected between power distribution network, DC/DC two-way changings are connected between the energy-storage battery and dc bus of micro-capacitance sensor
Device；AC/DC converters and DC/DC reversible transducers are used to monitor exchange side, the direct current of AC/DC converters of AC/DC converters
The voltage and power of side, the bus bar side of DC/DC reversible transducers and dc bus；Be more than when the virtual voltage of dc bus side or
Less than dc bus side rated voltage when, the reality of AC/DC converters and/or DC/DC reversible transducers adjustment dc bus side
Border voltage is to rated voltage.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiment of first aspect, wherein, it is micro-
Power grid further includes piconet controller；Piconet controller is used to gather the actual value of the steady state power of dc bus and obtains direct current
The periodic power prediction value of busbar；When the desired value of the steady state power of the dc bus determined based on predicted value and actual value
When being less than predetermined threshold value with the difference of AC/DC converters or the control and regulation power of DC/DC reversible transducers, piconet controller control
The power for the device being electrically connected with dc bus is made so that desired value returns the tune of AC/DC converters or DC/DC reversible transducers
Adjusting range；Device includes at least one below：The charge and discharge electric terminals of DC load, distributed power generation unit or electric vehicle；Electricity
The charge and discharge electric terminals of electrical automobile are used for the charge and discharge of electric vehicle.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiment of first aspect, further include
Charging cloud platform；Charging cloud platform is used to gather the charge and discharge historical information of the charge and discharge electric terminals of electric vehicle and according to filling
Electric discharge historical information predicts the charge status of electric vehicle.
Second aspect, the embodiment of the present invention also provide a kind of micro-capacitance sensor energy management method, applied to first aspect and its
The micro-capacitance sensor energy management system of one of possible embodiment, this method include：When the virtual voltage of dc bus side is more than
Or less than dc bus side rated voltage when, AC/DC converters and/or DC/DC reversible transducers adjustment dc bus side
Virtual voltage is to rated voltage.
With reference to second aspect, an embodiment of the present invention provides the first possible embodiments of second aspect, further include：
It gathers the actual value of the steady state power of dc bus and obtains the power prediction value of dc bus；Based on predicted value and actual value
Determine the desired value of the steady state power of dc bus；
When the difference of desired value and the control and regulation power of AC/DC converters or DC/DC reversible transducers is less than default threshold
During value, the power for the device that piconet controller control is electrically connected with dc bus；Device includes at least one below：Direct current is born
The charge and discharge electric terminals of load, distributed power generation unit or electric vehicle；The charge and discharge electric terminals of electric vehicle fill for electric vehicle
Electric discharge.
With reference to second aspect, an embodiment of the present invention provides second of possible embodiment of second aspect, wherein,
The step of virtual voltage to rated voltage of AC/DC converters and/or DC/DC reversible transducers adjustment dc bus side, including：
AC/DC converters and DC/DC reversible transducer transient stability dc bus and the power-balance for exchanging grid entry point, it is anti-by controlling
The virtual voltage of ring adjustment dc bus side is presented to rated voltage.
With reference to the first possible embodiment of second aspect, an embodiment of the present invention provides the third of second aspect
Possible embodiment, wherein, piconet controller control be electrically connected with dc bus device power the step of, including：It is micro-
Net controller control DC load excision load, control distributed power generation unit changes generated output or control charge and discharge electric terminals change
Become charge-discharge electric power.
With reference to second aspect, an embodiment of the present invention provides the 4th kind of possible embodiments of second aspect, further include：
When micro-capacitance sensor is in grid-connected working method, the virtual voltage of AC/DC converters and DC/DC converters progress dc bus side
It adjusts, wherein, the adjustable range of AC/DC converters is more than the adjustable range of DC/DC；When micro-capacitance sensor is in isolated power grid mode
When, control DC/DC reversible transducers carry out the adjusting of the virtual voltage of dc bus side.
The third aspect, the embodiment of the present invention also provide a kind of micro-capacitance sensor energy management apparatus, which includes：Control mould
Block, for when the virtual voltage of dc bus side be more than or less than dc bus side rated voltage when, AC/DC converters and/
Or the virtual voltage of DC/DC reversible transducers adjustment dc bus side is to rated voltage.
With reference to the third aspect, an embodiment of the present invention provides the first possible embodiments of the third aspect, further include：
Acquisition module, for gathering the actual value of the steady state power of dc bus and obtaining the power prediction value of dc bus；It calculates
Module, for determining the desired value of the steady state power of dc bus based on predicted value and actual value；Module is adjusted, for when expection
When value and the difference of AC/DC converters or the control and regulation power of DC/DC reversible transducers are less than predetermined threshold value, piconet controller
Control changes the power for the device being electrically connected with dc bus；Above device includes at least one below：DC load, distribution
The charge and discharge electric terminals of power generator or electric vehicle；The charge and discharge electric terminals of electric vehicle are used for the charge and discharge of electric vehicle.
The embodiment of the present invention brings following advantageous effect：Micro-capacitance sensor energy management system provided in an embodiment of the present invention,
Method and device, when the virtual voltage of dc bus side is more than or less than the rated voltage of dc bus side, AC/DC converters
And/or the virtual voltage of DC/DC reversible transducers adjustment dc bus side is to rated voltage, so as to keep dc bus defeated
The voltage gone out is maintained in rated voltage, can improve power quality and utilization rate of electrical.
Other feature and advantage of the disclosure will illustrate in the following description, alternatively, Partial Feature and advantage can be with
Deduce from specification or unambiguously determine or by implement the disclosure above-mentioned technology it can be learnt that.
For the above-mentioned purpose of the disclosure, feature and advantage is enable to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structural scheme of mechanism of micro-grid system provided in an embodiment of the present invention；
Fig. 2 is the control strategy schematic diagram of micro-capacitance sensor energy management system provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of power grid energy management method provided in an embodiment of the present invention；
Fig. 4 is a kind of structure diagram of micro-grid system provided in an embodiment of the present invention.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiment be part of the embodiment of the present invention rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower all other embodiments obtained, belong to the scope of protection of the invention.
Current micro-capacitance sensor exist due to electric loading, electric vehicle, photovoltaic generation power swing caused by electric energy matter
The problem of amount difference and low utilization rate of electrical, based on this, a kind of micro-capacitance sensor energy management system provided in an embodiment of the present invention, method
And device, power quality and utilization rate of electrical can be improved.
The structural scheme of mechanism of micro-grid system shown in Figure 1, micro-grid system, which is shown, includes wind-power electricity generation
Device, photovoltaic power generation apparatus, box control device, photovoltaic control device, fan controller, energy storage device, electric vehicle fill
Electric terminals.Electric vehicle charging terminal accesses electric vehicle in micro-capacitance sensor, and Bidirectional intelligent conversion module therein can be completed
The two-way changing of alterating and direct current energy so that electric vehicle becomes capacity controllable, the mobile energy storage device of time controllably.Electric vehicle
Interior electricity, wind energy electricity, photovoltaic electricity, energy storage electricity and garden internal loading information summary determine the charge and discharge row of electric vehicle
For.
Wherein the alternating current of power distribution network is connected with box control device, and photovoltaic power generation apparatus passes through photovoltaic control device and case
Formula control device connects, and wind power generation plant is connected by fan controller with box control device, energy storage device and charging
Device is directly connected with box control device.
Specifically, box control device include at least high voltage power distribution module, low-voltage distribution module, DC/DC reversible transducers,
AC/DC converters, charge and discharge control module, photovoltaic control module, system control module.Wherein, DC/DC reversible transducers are distinguished
Connection energy storage device and dc bus, AC/DC converters connect ac bus and dc bus respectively.
Energy management system and charging cloud platform, the energy management system and box control device are also shown in Fig. 1
Information exchange is carried out, and passes through energy cloud platform and carries out information exchange with power distribution network.Above-mentioned charging cloud platform is to extensive electronic
The charge and discharge of automobile have prediction and management function, so that the energy management system method for adding in electric vehicle is more accurate,
Advantage is had more in terms of the Secondary Control based on prediction.
For ease of understanding the present embodiment, first to a kind of micro-capacitance sensor energy management disclosed in the embodiment of the present invention
System describes in detail.
Embodiment 1
An embodiment of the present invention provides the dc bus and power distribution network of a kind of micro-capacitance sensor energy management system, wherein micro-capacitance sensor
Between be connected with AC/DC converters, be connected with DC/DC reversible transducers between the energy-storage battery and dc bus of micro-capacitance sensor.
The exchange side of AC/DC converters and DC/DC reversible transducers acquisition AC/DC converters, the direct current of AC/DC converters
The voltage and power of side, the bus bar side of DC/DC reversible transducers and dc bus.
When dc bus side virtual voltage be more than or less than dc bus side rated voltage when, AC/DC converters and/
Or the virtual voltage of DC/DC reversible transducers adjustment dc bus side is to rated voltage.
AC/DC converters and DC/DC reversible transducers are to control the voltage of dc bus side as target, AC/DC converters
It is communicated to connect with DC/DC reversible transducers, by high speed communication bus using μ EMS as a centralized-control center, realizes that transient state is steady
Determine dc bus and to exchange the power-balance of grid entry point, target be Udc=Ued (dc bus rated voltage), Ued is direct current
The design and operation voltage of busbar.The power swing of either side will all cause the variation of Udc, when Udc shifts, μ EMS
Adjust instruction will be sent to the voltage of AC/DC converters and DC/DC reversible transducers, electric current loop, Udc is made to be intended to Ued, this
Calculating process is coupled with the control feedback loop depth of AC/DC converters and DC/DC reversible transducers, has high response spy
Property.
Charge-discharge electric power, the comprehensive power of DC load of photovoltaic generation, electric vehicle in view of dc bus side are equal
There is the feature of random fluctuation, and load and photovoltaic generation power are predictable, above-mentioned micro-capacitance sensor energy in cycle regular hour
Management system further includes piconet controller.Wherein piconet controller can be used for the reality for gathering the steady state power of dc bus
Value and the periodic power prediction value for obtaining dc bus.Linear quadratic control is system-level EMS based on periodic energy
The control of grade balance.
When the steady state power of the dc bus determined based on predicted value and actual value desired value and AC/DC converters or
When the difference of the control and regulation power of DC/DC reversible transducers is less than predetermined threshold value, piconet controller control and dc bus electricity
The power of the device of connection is so that desired value returns the adjustable range of AC/DC converters or DC/DC reversible transducers.Specifically,
Piconet controller control DC load excision load, control distributed power generation unit change generated output or control charge and discharge electric terminals
Change charge-discharge electric power.Above device includes at least one below：DC load, distributed power generation unit or electric vehicle fill
Electric discharge terminal；The charge and discharge electric terminals of electric vehicle are used for the charge and discharge of electric vehicle.
Above-mentioned micro-capacitance sensor energy management system provided in an embodiment of the present invention, including AC/DC converters and the two-way changes of DC/DC
Parallel operation；When dc bus side virtual voltage be more than or less than dc bus side rated voltage when, AC/DC converters and/or
The virtual voltage of DC/DC reversible transducers adjustment dc bus side is to rated voltage, so as to keep dc bus output
Voltage is maintained in rated voltage, can improve power quality and utilization rate of electrical；
The control strategy schematic diagram of micro-capacitance sensor energy management system shown in Figure 2, is shown μ EMS and microgrid
Controller EMS corresponds to a secondary control and linear quadratic control respectively；μ EMS in Fig. 2 are the controls of itself of ACDC and DCDC inside modules
Device processed.
PV represents photovoltaic power generation apparatus, and EV represents electric vehicle, and Battery represents energy storage device, and DC-BUS represents direct current
Busbar, AC-BUS represent ac bus, and M1-M7 is main monitoring point.Wherein a key-course is with the AC/DC converters of four-quadrant
DC/DC reversible transducers with connection energy storage device are major control element, by the electricity for monitoring key point M4, M5, M6 and M7
Pressure and power, to control DC_Bus (dc bus) voltages as target.AC/DC converters and DC/DC reversible transducers pass through height
Fast communication bus using μ EMS as a centralized-control center, transient stability dc bus and the power-balance for exchanging grid entry point,
Target is Udc=Ued (dc bus rated voltage), and Udc is the design and operation voltage of dc bus.The power waves of either side
It is dynamic, the variation of Udc will be caused, when Udc shifts, μ EMS will be to the electricity of AC/DC converters and DC/DC reversible transducers
Pressure, electric current loop send adjust instruction, and Udc is made to be intended to Ued, this calculating process and AC/DC converters and DC/DC two-way changings
The control feedback loop depth coupling of device, has high response characteristic.
M7 is photovoltaic, electric vehicle, the comprehensive power of DC load, is regarded as in secondary control system a kind of equivalent
Source or equivalent lotus.Just there is due to photovoltaic, DC load and the feature of random fluctuation in the electric vehicle power of charge and discharge, but
In key-course, this fluctuation be considered as three introduces a collections/lotus comprehensive effect as a result, it is desirable to ensure the dynamic regulation energy of M6 and M5
Power is more than the fluctuation range of M7 under transient condition.
Linear quadratic control is then being balanced based on periodic energy level for system-level EMS (individually designed piconet controller)
Control, control purpose include：Prediction based on EMS system to load and power generator is predictable in cycle regular hour
, and the power swing within the cycle is less than AC/DC converters and the regulating power of DC/DC reversible transducers；In prediction number
On the basis of, when EMS monitor the steady state power of M7 close to M6 or M5 once control and regulation border when, pass through and intervene control
Electric vehicle charge/discharge power (increase or reduce charge-discharge electric power) or DC load power (excision load) inside M7 or
The power (limitation maximum power) of photovoltaic controller, makes M7 steady state powers come back to the adjustable range of a secondary control.It is logical
Energy management hierarchical control is crossed, can realize the adjusting to the quick adjusting of module level and the relatively slow speed of garden rank.
Above-mentioned control method is uniformly suitable for the mode of being incorporated into the power networks and isolated power grid mode.When system is in grid-connected work side
In formula, the power regulation factor of mono- secondary controls of μ EMS will primarily or entirely distribute to ACDC modules, and leading adjusting is played by ACDC
Effect.When in isolated power grid mode, ACDC loses regulating power, the regulatory factor of a secondary control will distribute to DCDC come into
Row is adjusted.Its Controlling principle is that a secondary control based on the power regulation of transient state, with the source lotus of large cyclic sent out by Secondary Control
Control method based on the energy balance adjusting of electricity/electricity consumption.It is thereby achieved that power transience and periodical energy homeostasis are adaptive
Control should be balanced.
Energy management system can also be by management and control data sending to energy cloud platform, region class or higher level distribution Netcom
It crosses energy cloud platform data to be monitored the hair electricity situation in region and future condition forecast analysis, interregional power grid collaboration is adjusted
The work such as degree improve power quality and utilization rate of electrical.
Embodiment 2
An embodiment of the present invention provides a kind of micro-capacitance sensor energy management method, the micro-capacitance sensor provided applied to above-described embodiment
Energy management system, this method include：
When dc bus side virtual voltage be more than or less than dc bus side rated voltage when, AC/DC converters and/
Or the virtual voltage of DC/DC reversible transducers adjustment dc bus side is to rated voltage.
Wherein, to control the voltage of dc bus side as target, AC/DC becomes for AC/DC converters and DC/DC reversible transducers
Parallel operation and the communication connection of DC/DC reversible transducers, by high speed communication bus using μ EMS as a centralized-control center, realize wink
State stable DC busbar and the power-balance for exchanging grid entry point, target are Udc=Ued (dc bus rated voltages), and Ued is
The design and operation voltage of dc bus.The power swing of either side will all cause the variation of Udc, when Udc shifts, μ
EMS will send adjust instruction to the voltage of AC/DC converters and DC/DC reversible transducers, electric current loop, and Udc is made to be intended to Ued,
This calculating process is coupled with the control feedback loop depth of AC/DC converters and DC/DC reversible transducers, has high response
Characteristic.
Grid-connected or non-and net state is likely to be in view of micro-capacitance sensor, when micro-capacitance sensor is in grid-connected working method, AC/DC
Converter and DC/DC converters carry out the adjusting of the virtual voltage of dc bus side, wherein, the adjustable range of AC/DC converters
Adjustable range more than DC/DC；When micro-capacitance sensor is in isolated power grid mode, DC/DC reversible transducers carry out dc bus side
Virtual voltage adjusting.When system is in grid-connected working method, the power regulation factors of mono- secondary controls of μ EMS will it is main or
ACDC modules are fully allocated to, leading adjustment effect is played by ACDC.When in isolated power grid mode, ACDC loses adjusting energy
Power, the regulatory factor of a secondary control will distribute to DCDC to be adjusted.
The flow chart of micro-capacitance sensor energy management method shown in Figure 3, comprises the following steps：
Step S302, when the virtual voltage of dc bus side is more than or less than the rated voltage of dc bus side, AC/DC
Converter and the virtual voltage of DC/DC reversible transducers adjustment dc bus side are to rated voltage.
Step S304, when the desired value and AC/DC of the steady state power of the dc bus determined based on predicted value and actual value
When the difference of the control and regulation power of converter or DC/DC reversible transducers is less than predetermined threshold value, piconet controller control with it is straight
The power of the device of busbar electrical connection is flowed so that desired value returns the adjustable range of AC/DC converters or DC/DC reversible transducers.
The desired value of steady state power needs to be less than the control and regulation power of the AC/DC converters or DC/DC reversible transducers, and with the two
Difference need to be more than the predetermined threshold value, to ensure that AC/DC converters or DC/DC reversible transducers have enough adjustment energy
Power.
Piconet controller can control DC load excision load, control distributed power generation unit to change generated output or control
Charge and discharge electric terminals processed change charge-discharge electric power.Referring to Fig. 2, when EMS monitors the steady state power of M7 close to a secondary control of M6 or M5
When system adjusts border, by intervene electric vehicle charge/discharge power (increase or reduce charge-discharge electric power) inside control M7 or
The power (limitation maximum power) of DC load power (excision load) or photovoltaic controller, makes M7 steady state powers again
Return to the adjustable range of a secondary control.By above-mentioned energy management method hierarchical control, can realize to the quick of module level
Adjust the adjusting with the relatively slow speed of garden rank.
Above-mentioned micro-capacitance sensor energy management method provided in an embodiment of the present invention, be more than when the virtual voltage of dc bus side or
Less than dc bus side rated voltage when, the reality of AC/DC converters and/or DC/DC reversible transducers adjustment dc bus side
Border voltage is to rated voltage；Piconet controller can be used for the actual value for gathering the steady state power of dc bus and obtain direct current
The periodic power prediction value of busbar, when the desired value of the steady state power of the dc bus determined based on predicted value and actual value
When being less than predetermined threshold value with the difference of AC/DC converters or the control and regulation power of DC/DC reversible transducers, piconet controller control
System changes the power for the device being electrically connected with dc bus, and the voltage so as to which dc bus is kept to export maintains specified electricity
In pressure, power quality and utilization rate of electrical can be improved.
Embodiment 3
An embodiment of the present invention provides a kind of micro-capacitance sensor energy management apparatus, the micro-capacitance sensor provided applied to above-described embodiment
Energy management system, including control module, function is as follows：
Control module, for when the virtual voltage of dc bus side be more than or less than dc bus side rated voltage when,
AC/DC converters and/or the virtual voltage of DC/DC reversible transducers adjustment dc bus side are to rated voltage.
Above device further includes：Acquisition module, for gathering the actual value of the steady state power of dc bus and obtaining straight
Flow the power prediction value of busbar；Computing module, for determining the pre- of the steady state power of dc bus based on predicted value and actual value
Time value；Module is adjusted, for working as desired value and the difference of AC/DC converters or the control and regulation power of DC/DC reversible transducers
During less than predetermined threshold value, piconet controller control changes the power for the device being electrically connected with dc bus；Above device at least wraps
Include one below：The charge and discharge electric terminals of DC load, distributed power generation unit or electric vehicle；The charge and discharge electric terminals of electric vehicle
For the charge and discharge of electric vehicle.
It is apparent to those skilled in the art that for convenience and simplicity of description, micro- electricity of foregoing description
The specific work process of net energy management apparatus may be referred to the corresponding process in preceding method embodiment, and details are not described herein.
Embodiment 4
An embodiment of the present invention provides a kind of micro-grid system, the structure diagram of micro-grid system shown in Figure 4,
The charge and discharge electric terminals 42 of electric vehicle including micro-capacitance sensor 41 and access micro-capacitance sensor；The charge and discharge electric terminals are used to fill for electric vehicle
Electricity or electric discharge；Micro-capacitance sensor includes the micro-capacitance sensor energy management apparatus that above-described embodiment provides.
Micro-grid system provided in an embodiment of the present invention, the micro-capacitance sensor energy management method provided with above-described embodiment have
Identical technical characteristic so can also solve the technical issues of identical, reaches identical technique effect.
Unless specifically stated otherwise, component and the opposite step of step, the digital table otherwise illustrated in these embodiments
It is not limit the scope of the invention up to formula and numerical value.
Flow chart and block diagram in attached drawing show the system, method and computer journey of multiple embodiments according to the present invention
Architectural framework in the cards, function and the operation of sequence product.In this regard, each box in flow chart or block diagram can generation
The part of one module of table, program segment or code, a part for the module, program segment or code include one or more use
In the executable instruction of logic function as defined in realization.It should also be noted that it is marked at some as in the realization replaced in box
The function of note can also be occurred with being different from the order marked in attached drawing.For example, two continuous boxes can essentially base
Originally it is performed in parallel, they can also be performed in the opposite order sometimes, this is depending on involved function.It is also noted that
It is the combination of each box in block diagram and/or flow chart and the box in block diagram and/or flow chart, can uses and perform rule
The group of specialized hardware and computer instruction is realized or can used to fixed function or the dedicated hardware based system of action
It closes to realize.
In addition, in the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
The computer program product for the execution micro-capacitance sensor energy management method that the embodiment of the present invention is provided, including storing
The computer readable storage medium for the non-volatile program code that processor can perform, the instruction that said program code includes can use
In the method described in previous methods embodiment that performs, specific implementation can be found in embodiment of the method, and details are not described herein.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit may be referred to the corresponding process in preceding method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.The apparatus embodiments described above are merely exemplary, for example, the division of the unit,
Only a kind of division of logic function, can there is other dividing mode in actual implementation, in another example, multiple units or component can
To combine or be desirably integrated into another system or some features can be ignored or does not perform.It is another, it is shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be by some communication interfaces, device or unit it is indirect
Coupling or communication connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That unit is individually physically present, can also two or more units integrate in a unit.
If the function is realized in the form of SFU software functional unit and is independent production marketing or in use, can be with
It is stored in the non-volatile computer read/write memory medium that a processor can perform.Based on such understanding, the present invention
The part that substantially contributes in other words to the prior art of technical solution or the part of the technical solution can be with software
The form of product embodies, which is stored in a storage medium, including some instructions use so that
One computer equipment (can be personal computer, server or the network equipment etc.) performs each embodiment institute of the present invention
State all or part of step of method.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with
Store the medium of program code.
Finally it should be noted that：Embodiment described above is only the specific embodiment of the present invention, to illustrate the present invention
Technical solution, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent substitution is carried out to which part technical characteristic；And these modifications, variation or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention described should be subject to the protection scope in claims.
Claims (10)
1. a kind of micro-capacitance sensor energy management system, which is characterized in that connected between the dc bus and power distribution network of the micro-capacitance sensor
There are AC/DC converters, DC/DC reversible transducers are connected between the energy-storage battery of the micro-capacitance sensor and the dc bus；
The AC/DC converters and the DC/DC reversible transducers are used to monitoring the exchange side of the AC/DC converters, described
The voltage and power of the DC side of AC/DC converters, the bus bar side of the DC/DC reversible transducers and the dc bus；
When the virtual voltage of the dc bus side is more than or less than the rated voltage of the dc bus side, the AC/DC
Converter and/or the DC/DC reversible transducers adjust the virtual voltage of the dc bus side to the rated voltage.
2. system according to claim 1, which is characterized in that further include piconet controller；The piconet controller is used for
It gathers the actual value of the steady state power of the dc bus and obtains the periodic power prediction value of the dc bus；
Desired value and the AC/ when the steady state power of the dc bus determined based on the predicted value and the actual value
When the difference of the control and regulation power of DC converters or the DC/DC reversible transducers is less than predetermined threshold value, the microgrid control
Device control change the power of device that is electrically connected with the dc bus so that the desired value return the AC/DC converters or
The adjustable range of the DC/DC reversible transducers；Described device includes at least one below：DC load, distributed power generation dress
It puts or the charge and discharge electric terminals of electric vehicle；The charge and discharge electric terminals of the electric vehicle are used for the charge and discharge of the electric vehicle.
3. system according to claim 1, which is characterized in that further include charging cloud platform；
The charging cloud platform, for the charge and discharge historical information for gathering the charge and discharge electric terminals of electric vehicle and according to described
Charge and discharge historical information predicts the charge status of the electric vehicle.
4. a kind of micro-capacitance sensor energy management method, which is characterized in that applied to claim 1-3 any one of them micro-capacitance sensor energy
Management system, this method include：
When the virtual voltage of the dc bus side is more than or less than the rated voltage of the dc bus side, the AC/DC
Converter and/or the DC/DC reversible transducers adjust the virtual voltage of the dc bus side to the rated voltage.
5. it according to the method described in claim 4, it is characterized in that, further includes：
It gathers the actual value of the steady state power of the dc bus and obtains the power prediction value of the dc bus；
The desired value of the steady state power of the dc bus is determined based on the predicted value and the actual value；
When the desired value and the difference of the AC/DC converters or the control and regulation power of the DC/DC reversible transducers are small
When predetermined threshold value, piconet controller control changes the power for the device being electrically connected with the dc bus so that the desired value
Return the adjustable range of the AC/DC converters or the DC/DC reversible transducers；Described device includes at least one below：
The charge and discharge electric terminals of DC load, distributed power generation unit or electric vehicle；The charge and discharge electric terminals of the electric vehicle are used for institute
State the charge and discharge of electric vehicle.
6. according to the method described in claim 4, it is characterized in that,
The AC/DC converters and/or the DC/DC reversible transducers adjust the virtual voltage of the dc bus side to described
The step of rated voltage, including：
The AC/DC converters are put down with the DC/DC reversible transducers transient stability dc bus with the power for exchanging grid entry point
Weighing apparatus, by the way that feedback loop is controlled to adjust the virtual voltage of the dc bus side to the rated voltage.
7. according to the method described in claim 5, it is characterized in that, piconet controller control changes and the dc bus
The step of power of the device of electrical connection, including：
The piconet controller controls the DC load excision load, the control distributed power generation unit to change generated output
Or the control charge and discharge electric terminals change charge-discharge electric power.
8. it according to the method described in claim 4, it is characterized in that, further includes：
When the micro-capacitance sensor is in grid-connected working method, the AC/DC converters and DC/DC converters progress are described straight
Flow the adjusting of the virtual voltage of bus bar side；Wherein, the adjustable range of the AC/DC converters is more than the adjusting model of the DC/DC
It encloses；
When the micro-capacitance sensor is in isolated power grid mode, the DC/DC reversible transducers carry out the reality of the dc bus side
The adjusting of border voltage.
9. a kind of micro-capacitance sensor energy management apparatus, which is characterized in that including：
Control module, for when the virtual voltage of dc bus side be more than or less than the dc bus side rated voltage when,
AC/DC converters and/or DC/DC reversible transducers adjust the virtual voltage of the dc bus side to the rated voltage.
10. device according to claim 9, which is characterized in that further include：
Acquisition module, for gathering the actual value of the steady state power of the dc bus and obtaining the power of the dc bus
Predicted value；
Computing module, for determining the expection of the steady state power of the dc bus based on the predicted value and the actual value
Value；
Module is adjusted, for working as the desired value and the control and regulation of the AC/DC converters or the DC/DC reversible transducers
When the difference of power is less than predetermined threshold value, piconet controller control change the power of device that is electrically connected with the dc bus with
The desired value is made to return the adjustable range of the AC/DC converters or the DC/DC reversible transducers；Described device is at least wrapped
Include one below：The charge and discharge electric terminals of DC load, distributed power generation unit or electric vehicle；The charge and discharge of the electric vehicle
Terminal is used for the charge and discharge of the electric vehicle.
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