CN112821418A - System and method for dynamically adjusting optical storage and charging multi-target power - Google Patents

System and method for dynamically adjusting optical storage and charging multi-target power Download PDF

Info

Publication number
CN112821418A
CN112821418A CN202110079048.6A CN202110079048A CN112821418A CN 112821418 A CN112821418 A CN 112821418A CN 202110079048 A CN202110079048 A CN 202110079048A CN 112821418 A CN112821418 A CN 112821418A
Authority
CN
China
Prior art keywords
power
charging
coordination
subunit
energy storage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110079048.6A
Other languages
Chinese (zh)
Other versions
CN112821418B (en
Inventor
吴洁
奚玲玲
崔寒冰
缪勇
陈国栋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Electric Group Corp
Original Assignee
Shanghai Electric Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Electric Group Corp filed Critical Shanghai Electric Group Corp
Priority to CN202110079048.6A priority Critical patent/CN112821418B/en
Publication of CN112821418A publication Critical patent/CN112821418A/en
Application granted granted Critical
Publication of CN112821418B publication Critical patent/CN112821418B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/63—Monitoring or controlling charging stations in response to network capacity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/64—Optimising energy costs, e.g. responding to electricity rates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/67—Controlling two or more charging stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
    • 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
    • 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
    • H02J3/322—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/388—Islanding, i.e. disconnection of local power supply from the network
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
    • H02J2310/56—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
    • H02J2310/62—The condition being non-electrical, e.g. temperature
    • H02J2310/64—The condition being economic, e.g. tariff based load management
    • 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
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention discloses a system and a method for dynamically adjusting light storage and charging multi-target power, which are characterized in that: the adjusting system comprises a control layer and an equipment layer, the equipment layer comprises a plurality of photovoltaic power generation systems, a plurality of energy storage systems and a plurality of charging piles, the control layer comprises an optical storage and charging coordination controller, the optical storage and charging coordination controller is used for collecting output power information of each device of the equipment layer and controlling the power of each device of the equipment layer in real time, and therefore the power difference between the interactive actual power value and the set power value between the optical storage and charging system and the power grid tends to zero. The invention can self-define the energy flow value between the light storage and charging system and the power grid, can be used for an off-grid system and a grid-connected system, has wide application scenes, and can flexibly set the target energy flow value of the light storage and charging system at the grid-connected point; the adjustment is fast and accurate and the real-time performance is good. The light storage and charging integrated system not only utilizes the generated energy of renewable energy to the maximum extent, but also has good economic benefits.

Description

System and method for dynamically adjusting optical storage and charging multi-target power
Technical Field
The invention relates to a system and a method for dynamically adjusting optical storage and charging multi-target power, in particular to a system and a method for dynamically coordinating and controlling optical storage and charging power of multiple targets, and belongs to the technical field of optical storage and charging micro-grid control systems.
Background
Along with electric automobile is more and more popularized, more and more electric pile that fills has been installed in public places such as residential quarter, parking area, trade power station, but too much electric pile that fills inserts the electric wire netting and may surpass electric wire netting transformer capacity limit value, cause the harm to the electric wire netting, and electric automobile's load has certain randomness, characteristics such as dispersibility, if a large amount of electric automobile use fills electric pile and charges, will bring huge power impact to the distribution network, the normal operating of node voltage, the equipment of high permeability can influence the normal power consumption of user of circuit with the charging of high permeability.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the power coordination control of multiple targets of the optical storage and charging system is realized, and a set of dynamically-adjusted power coordination method is provided.
In order to solve the above problems, the technical solution of the present invention is to provide a system for dynamically adjusting optical storage and charging multi-target power, which is characterized in that: including control layer and equipment layer, the equipment layer includes a plurality of photovoltaic power generation systems, a plurality of energy storage system and a plurality of electric pile that fills, the control layer includes that light stores up and fills the coordinated control ware, light stores up and fills the coordinated control ware and is used for gathering the output power information of each equipment of equipment layer to carry out real-time control to each equipment power of equipment layer, make light store up and fill the power difference of interactive actual power value and setting power value between system and the electric wire netting and tend to zero.
Preferably, the power control system further comprises a scheduling layer, wherein the scheduling layer is used for making a power coordination target and issuing an instruction to the control layer, and the control layer controls the power of each device of the device layer in real time according to the instruction of the scheduling layer.
Preferably, the optical storage and charging coordination controller includes a power coordination main unit, a photovoltaic power coordination sub-unit, an energy storage power coordination sub-unit, and a charging pile power coordination sub-unit, the power coordination main unit distributes a power difference between an actual power value and a set power value interacted between the optical storage and charging system and the power grid to the photovoltaic power coordination sub-unit, the energy storage power coordination sub-unit, and the charging pile power coordination sub-unit, and the photovoltaic power coordination sub-unit, the energy storage power coordination sub-unit, and the charging pile power coordination sub-unit distribute the distributed power difference to a plurality of photovoltaic power generation systems, a plurality of energy storage systems, and a plurality of charging piles of the device layer as power regulation values to control powers of the plurality of photovoltaic power generation systems, the plurality of energy storage systems, and the plurality of charging piles in real time.
Another technical solution of the present invention is to provide a method for dynamically adjusting optical storage and charging multi-target power, which applies the above system for dynamically adjusting optical storage and charging multi-target power, and is characterized in that:
setting the power shortage when the power difference between the power value and the actual power value interacted between the light storage and charging system and the power grid is larger than 0; when the power difference between the interactive actual power value and the set power value between the optical storage and charging system and the power grid is less than 0, the power is in excess;
the power coordination main unit determines the priority of control over a plurality of photovoltaic power generation systems, a plurality of energy storage systems and a plurality of charging piles on the equipment layer according to the current power excess or power shortage;
in the case of power shortage, the power shortage is ranked according to priority:
photovoltaic power coordination subunit: the limited power operation of the photovoltaic power generation system is reduced, and even the photovoltaic power generation system operates at the maximum power;
energy storage power coordination subunit: reducing charging and even discharging of the energy storage system;
fill electric pile power coordination subunit: limiting the output power of the charging pile;
the power is sorted according to the priority level under the condition of excess power as follows:
fill electric pile power coordination subunit: the output power of the charging pile is reduced or even not limited completely;
energy storage power coordination subunit: the discharge and even the charge of the energy storage system are reduced;
photovoltaic power coordination subunit: the photovoltaic power generation system operates in a limited power mode;
the priority of control of the single photovoltaic power generation system, the single energy storage system and the single charging pile is determined by the photovoltaic power coordination subunit, the energy storage power coordination subunit and the charging pile power coordination subunit.
Preferably, in case of power shortage, the photovoltaic power coordination subunit is assigned to the differential power regulation value:
ΔP1set＝MIN(ΔP1posmax,ΔPset)，
wherein
Figure BDA0002908503770000021
ΔP1posmaxIs the maximum value of the forward output power, P, of the photovoltaic power generation systems with the highest priorityThe sum of iIs the maximum power generation power of the ith photovoltaic power generation system, ai% is the limited power percentage of the ith photovoltaic power generation system, delta PsetThe power difference between the interactive actual power value and the set power value between the light storage and charging system and the power grid is obtained, and n is the total number of the photovoltaic power generation systems;
the energy storage power coordination subunit is distributed to a differential power regulation value:
ΔP2set＝MIN(ΔP2posmax,ΔPset-ΔP1set)，
wherein
Figure BDA0002908503770000022
ΔP2posmaxForward direction of multiple energy storage systems with second priorityMaximum value of output power, PThe sum of iMaximum discharge power, P, for energy storageiThe real-time output power of the ith energy storage system is obtained, and n is the total number of the energy storage systems;
the charging pile power coordination subunit distributes a difference power regulation value:
ΔP3set＝MIN(ΔP3posmax,ΔPset-ΔP1set-ΔP2set)，
wherein
Figure BDA0002908503770000031
ΔP3posmaxMaximum value of forward output power of the charging piles of the third priority, PiThe real-time charging power of the ith charging pile is obtained, and n is the total number of the charging piles;
under the power excess condition, fill electric pile power coordination subunit and distribute excess power regulating value:
ΔP1set＝MAX(ΔP1negmax,ΔPset)，
wherein
Figure BDA0002908503770000032
Wherein P isThe sum of iThe real-time charging power of the ith charging pile is a negative value, n is the total number of the charging piles, and ai% is the limited power percentage of the ith charging pile; if each aiPercent to 100%, i.e. without limiting power, then Δ P1negmax＝0；ΔPsetThe power difference between the actual power value and the set power value interacted between the light storage and charging system and the power grid is obtained;
the energy storage power coordination subunit distributes a difference power regulation value:
ΔP2set＝MAX(ΔP2negmax,ΔPset-ΔP1set)，
wherein
Figure BDA0002908503770000033
At this time PThe sum of iMaximum charging power for energy storage, PiThe real-time output power of the energy storage of the ith station is just discharging,negative is charging, and n is the total number of the energy storage systems;
the photovoltaic power coordination subunit assigns a difference power adjustment value:
ΔP3set＝MAX(ΔP3negmax,ΔPset-ΔP1set-ΔP2set)，
wherein
Figure BDA0002908503770000034
ΔP3negmaxMaximum value of forward output power of a plurality of photovoltaic power generation systems with the third priority, PiAnd (4) the real-time power generation power of the ith photovoltaic power generation system, wherein n is the total number of the photovoltaic power generation systems.
Preferably, a target of power coordination is formulated through the scheduling layer and an instruction is issued, and the control layer operates a power coordination algorithm according to the instruction of the scheduling layer to control the power of each device of the device layer in real time.
Compared with the prior art, the invention has the beneficial effects that:
according to the photovoltaic energy storage and storage system, after the photovoltaic system is connected to the power grid, the generated electricity is supplied to the charging pile to be consumed on site, the power supply pressure of the power grid is reduced, meanwhile, due to the fact that actual conditions such as peak-valley electricity price difference exist, after the energy storage system is added, power coordination is conducted on photovoltaic and energy storage through the coordination controller, charging of the charging pile is conducted in order, bidirectional flowing of energy between the photovoltaic energy storage and storage system and the power grid can be achieved, and the maximum economic benefit is achieved.
The invention can self-define the energy flow value between the light storage and the power grid, is also suitable for areas without power grid access, forms a light storage and charging off-grid system with spontaneous and self-use electric energy, can be used for the off-grid system and a grid-connected system, has wide application scenes, and can flexibly set the target energy flow value of the light storage and charging system at the grid-connected point; the adjustment is fast and accurate and the real-time performance is good. The light storage and charging integrated system not only utilizes the generated energy of renewable energy to the maximum extent, but also has good economic benefits.
Drawings
FIG. 1 is a diagram of a light storage and charging multi-target power dynamic adjustment system according to the present invention;
FIG. 2 is a schematic diagram of a light charging and storing system;
FIG. 3 is a diagram illustrating a dynamic adjustment method for optical storage and charging multi-target power in the case of power shortage;
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
The invention relates to a light storage and charging multi-target power dynamic regulation system which is shown in a structural diagram in figure 1, the system is divided into three layers, an equipment layer is composed of a plurality of photovoltaic power generation systems, a plurality of energy storage systems and a plurality of charging piles, a light storage and charging coordination controller is a control layer, and an upper scheduling system is a scheduling layer. And the light storage and charging coordination controller collects the information of the equipment layer, runs a power coordination algorithm according to the instruction of the scheduling layer and controls the equipment in real time. In the three-layer structure, if the target of the optical storage and charging coordination controller is determined to be unchanged, for example, the optical storage and charging off-grid system, there may be no upper-layer scheduling system. And the upper-layer scheduling system formulates a power coordination target and gives an instruction.
Fig. 2 is a schematic diagram of a primary optical storage and charging system, in which arrows represent the direction of energy flow, a photovoltaic power generation system supplies power to a bus, a charging pile absorbs electric energy, and an energy storage system is a bidirectional regulating system. The invention aims to adjust the power value P of a grid-connected point to be a target value PsetIf the system is an off-grid system, Pset0. The upper layer scheduling system makes the target value if Pset>0, the energy flows to the large power grid in the positive direction, otherwise Pset<0, the electric energy is absorbed from the large power grid, and the direction is negative.
Introduction of dynamic power coordination algorithm:
power P and set power value P of grid-connected pointsetPower difference of (1) Δ P ═ Pset-P, where P is the power value of the actual light storage and charging system interacting with the grid. Delta P>0 is considered as a power deficit, Δ P<0 is considered a power excess.
The final control objective of the power coordination control algorithm is to make Δ P → 0. Book calculatorThe method can be divided into a power coordination master unit and a power coordination subunit. Power coordination master unit will power difference Δ PsetThe power coordination subunits are distributed with delta P, and the power coordination subunits adjust the distributed margin powernsetAnd distributing the sub-units to the equipment layer.
The power coordination main unit and the power coordination sub unit can adopt various control algorithms, such as an average control algorithm, a priority control algorithm, a PID control algorithm, a fastest speed control algorithm and the like. In the invention, a priority control algorithm is introduced, and the power coordination main unit determines the priority of each subunit control of the equipment layer according to the current power excess or power shortage. For example, when the power is excessive, the power coordination main unit determines whether to limit the power of the photovoltaic power generation system or to charge the energy storage system. The priority of each device in the device layer subunit is determined by each power coordination subunit, for example, there are 10 sets of photovoltaic power generation systems, and the priority of limiting the power of the 10 sets of photovoltaic power generation systems is determined by the photovoltaic power coordination subunit.
The algorithm has 3 power coordination subunits: the photovoltaic power coordination subunit, the energy storage power coordination subunit and the charging pile power coordination subunit. Referring to fig. 3, taking power deficit as an example, the priority is: the difference power regulating value distributed by the photovoltaic power coordination subunit is greater than the difference power regulating value distributed by the energy storage power and greater than the difference power regulating value distributed by the charging pile, namely the priority sequence is as follows: delta P1set>ΔP2set>ΔP3set。
The power coordination control method is simple, and under the condition of power shortage, the photovoltaic power generation system generates power as much as possible, the energy storage system discharges power, and the charging pile runs in a power-limited mode. Under the condition of excess power, the photovoltaic power generation system is limited to generate power, the energy storage system is charged, and the charging pile operates at the maximum power. However, in the two cases, the priority of each subunit is different, so the two cases of power shortage and power excess are introduced.
In the case of power shortage, the power shortage is ranked according to priority:
1) photovoltaic power coordination subunit: reduced photovoltaic power operation, even at maximum power.
2) Energy storage power coordination subunit: reducing the energy storage charging and even discharging.
3) Fill electric pile power coordination subunit: and limiting the output power of the charging pile.
The power is sorted according to the priority level under the condition of excess power as follows:
1) fill electric pile power coordination subunit: the output power of the charging pile is reduced or even not limited at all.
2) Energy storage power coordination subunit: reducing the energy storage discharge and even charging.
3) A photovoltaic control subunit: photovoltaic power limited operation.
Fig. 2 illustrates power shortage as an example, the photovoltaic priority is highest, the control of the charging pile is lowest, and if the power shortage is exceeded, the sequence is reversed.
The dynamic adjustment process of power is described below by taking the power shortage as an example.
If Δ P >0, the system power is scarce, and each device subsystem requires more power or less power consumption. The priority control algorithm is as follows:
1) power coordination unit 1 differential power regulation value distributed by photovoltaic power coordination subunit
ΔP1set＝MIN(ΔP1posmax,ΔPset),
2) Power coordinating unit 2 differential power regulating value distributed by energy storage power
ΔP2set＝MIN(ΔP2posmax,ΔPset-ΔP1set),
3) A power coordination unit 3 is used for adjusting the target adjustment power of the difference power adjustment value distributed by the charging pile
ΔP3set＝MIN(ΔP3posmax,ΔPset-ΔP1set-ΔP2set),
Wherein Δ P1posmaxThe maximum value of the forward output power of the unit with the highest priority, namely the maximum power which can be output by the photovoltaic subsystem at present, is calculated by the system in real time and adjusted in real time,
Figure BDA0002908503770000061
wherein P isThe sum of iIs the maximum power generation power of the ith photovoltaic, n is the total number of the photovoltaic power generation systems, ai% is the photovoltaic power limit percentage of the ith station if a of each stationiPercent to 100%, i.e. without limiting power, then Δ P1posmax0. Similarly, the subsystem with stored energy as the second priority is also calculated according to the method
Figure BDA0002908503770000062
At this time PThe sum of iMaximum discharge power, P, for energy storageiAnd outputting the real-time output power for the ith station, wherein the positive is discharging, the negative is charging, and n is the total number of the energy storage systems. Similarly, charging pile is used as a subsystem with the third priority
Figure BDA0002908503770000063
PiAnd (5) charging the real-time charging power of the ith charging pile, wherein n is the total number of the charging piles.
If the power is excessive, the adjusting process is reversed.
The dynamic adjustment process in the case of power overage is as follows.
If Δ P <0, the system power is excessive and each device subsystem needs to reduce its power burst or consume it to its maximum. The priority control algorithm is as follows:
1) and the power coordination unit 1 is used for distributing the excess power regulation value to the charging pile power coordination subunit.
ΔP1set＝MAX(ΔP1negmax,ΔPset),
2) Power coordinating unit 2 differential power regulating value distributed by energy storage power
ΔP2set＝MAX(ΔP2negmax,ΔPset-ΔP1set),
3) Power coordination unit 3 excess power regulation value distributed by photovoltaic power coordination subunit
ΔP3set＝MAX(ΔP3negmax,ΔPset-ΔP1set-ΔP2set),
Wherein Δ P1negmaxThe maximum value of the forward output power of the unit with the highest priority, namely the maximum power which can be absorbed by the charging pile system at present, is calculated by the system in real time and adjusted in real time.
Figure BDA0002908503770000071
Wherein P isThe sum of iThe real-time charging power of the ith charging pile is a negative value, n is the total number of the charging piles, and ai% is the power limit percentage of the ith charging pile. If each aiPercent to 100%, i.e. without limiting power, then Δ P1negmax0. Similarly, the subsystem with stored energy as the second priority is also calculated according to the method
Figure BDA0002908503770000072
At this time PThe sum of iMaximum charging power for energy storage, PiAnd outputting the real-time output power for the ith station, wherein the positive is discharging, the negative is charging, and n is the total number of the energy storage systems. Likewise, the photovoltaic system is taken as a third-priority subsystem
Figure BDA0002908503770000073
PiThe real-time power generation power of the ith photovoltaic power generation system is obtained, and n is the total number of the photovoltaic power generation systems.
The output power of each device is acquired and calculated in real time by the controller through industrial communication in millisecond level, the value is updated in real time, and the target regulation value is also updated in real time until the system target value is met.
According to the control method provided by the invention, the output power target value of the optical storage and charging system can be set and changed according to different application scenes and requirements, the power target value of each equipment subsystem is adjusted in real time according to the photovoltaic power generation condition, the stored energy residual quantity and the charging condition of the charging pile, the system response can reach millisecond level, the power generation or power utilization power of all equipment is collected in real time, the power value can be adjusted in a two-way manner for real-time calculation, and the power between the equipment and a power grid can flow in a two-way manner according to a plurality of targets.

Claims (6)

1. A light storage and charging multi-target power dynamic regulation system is characterized in that: including control layer and equipment layer, the equipment layer includes a plurality of photovoltaic power generation systems, a plurality of energy storage system and a plurality of electric pile that fills, the control layer includes that light stores up and fills the coordinated control ware, light stores up and fills the coordinated control ware and is used for gathering the output power information of each equipment of equipment layer to carry out real-time control to the power of each equipment of equipment layer, make light store up and fill the power difference of interactive actual power value and setting power value between system and the electric wire netting and tend to zero.
2. A light storage and charging multiple target power dynamic regulation system as claimed in claim 1, characterized in that: the power control system further comprises a scheduling layer, wherein the scheduling layer is used for making a power coordination target and issuing an instruction to the control layer, and the control layer controls the power of each device of the device layer in real time according to the instruction of the scheduling layer.
3. A light storage and charging multiple target power dynamic regulation system as claimed in claim 1, characterized in that: the light storage and charging coordination controller comprises a power coordination main unit, a photovoltaic power coordination subunit, an energy storage power coordination subunit and a charging pile power coordination subunit, wherein the power coordination main unit distributes power difference between an actual power value and a set power value interacted between a light storage and charging system and a power grid to the photovoltaic power coordination subunit, the energy storage power coordination subunit and the charging pile power coordination subunit, and the photovoltaic power coordination subunit, the energy storage power coordination subunit and the charging pile power coordination subunit distribute the distributed power difference to a plurality of photovoltaic power generation systems, a plurality of energy storage systems and a plurality of charging piles of an equipment layer to serve as power regulation values to control the power of the photovoltaic power generation systems, the energy storage systems and the charging piles in real time.
4. A dynamic regulation method of optical storage, charging and multiple target power, which applies a dynamic regulation system of optical storage, charging and multiple target power as claimed in any one of claims 1 to 3, and is characterized in that:
setting the power shortage when the power difference between the power value and the actual power value interacted between the light storage and charging system and the power grid is larger than 0; when the power difference between the interactive actual power value and the set power value between the optical storage and charging system and the power grid is less than 0, the power is in excess;
the power coordination main unit determines the priority of control over a plurality of photovoltaic power generation systems, a plurality of energy storage systems and a plurality of charging piles on the equipment layer according to the current power excess or power shortage;
in the case of power shortage, the power shortage is ranked according to priority:
photovoltaic power coordination subunit: the limited power operation of the photovoltaic power generation system is reduced, and even the photovoltaic power generation system operates at the maximum power;
energy storage power coordination subunit: reducing charging and even discharging of the energy storage system;
fill electric pile power coordination subunit: limiting the output power of the charging pile;
the power is sorted according to the priority level under the condition of excess power as follows:
fill electric pile power coordination subunit: the output power of the charging pile is reduced or even not limited completely;
energy storage power coordination subunit: the discharge and even the charge of the energy storage system are reduced;
photovoltaic power coordination subunit: the photovoltaic power generation system operates in a limited power mode;
the priority of control of the single photovoltaic power generation system, the single energy storage system and the single charging pile is determined by the photovoltaic power coordination subunit, the energy storage power coordination subunit and the charging pile power coordination subunit.
5. The method of claim 4 for dynamically adjusting optical storage multi-target power, wherein: under the condition of power shortage, the photovoltaic power coordination subunit is distributed to a differential power regulation value:
ΔP1set＝MIN(ΔP1posmax,ΔPset)，
wherein
Figure FDA0002908503760000021
ΔP1posmaxIs the maximum value of the forward output power, P, of the photovoltaic power generation systems with the highest priorityThe sum of iIs the maximum power generation power of the ith photovoltaic power generation system, ai% is the limited power percentage of the ith photovoltaic power generation system, delta PsetThe power difference between the interactive actual power value and the set power value between the light storage and charging system and the power grid is obtained, and n is the total number of the photovoltaic power generation systems;
the energy storage power coordination subunit is distributed to a differential power regulation value:
ΔP2set＝MIN(ΔP2posmax,ΔPset-ΔP1set)，
wherein
Figure FDA0002908503760000022
ΔP2posmaxMaximum value of forward output power of the plurality of energy storage systems with the second priority, PThe sum of iMaximum discharge power, P, for energy storageiThe real-time output power of the ith energy storage system is obtained, and n is the total number of the energy storage systems;
the charging pile power coordination subunit distributes a difference power regulation value:
ΔP3set＝MIN(ΔP3posmax,ΔPset-ΔP1set-ΔP2set)，
wherein
Figure FDA0002908503760000023
ΔP3posmaxMaximum value of forward output power of the charging piles of the third priority, PiThe real-time charging power of the ith charging pile is obtained, and n is the total number of the charging piles;
under the power excess condition, fill electric pile power coordination subunit and distribute excess power regulating value:
ΔP1set＝MAX(ΔP1negmax,ΔPset)，
wherein
Figure FDA0002908503760000024
Wherein P isThe sum of iThe real-time charging power of the ith charging pile is a negative value, n is the total number of the charging piles, and ai% is the limited power percentage of the ith charging pile; if each aiPercent to 100%, i.e. without limiting power, then Δ P1negmax＝0；ΔPsetThe power difference between the actual power value and the set power value interacted between the light storage and charging system and the power grid is obtained;
the energy storage power coordination subunit distributes a difference power regulation value:
ΔP2set＝MAX(ΔP2negmax,ΔPset-ΔP1set)，
wherein
Figure FDA0002908503760000031
At this time PThe sum of iMaximum charging power for energy storage, PiOutputting the real-time output power of the ith energy storage system, wherein the positive power is discharging, the negative power is charging, and n is the total number of the energy storage systems;
the photovoltaic power coordination subunit assigns a difference power adjustment value:
ΔP3set＝MAX(ΔP3negmax,ΔPset-ΔP1set-ΔP2set)，
wherein
Figure FDA0002908503760000032
ΔP3negmaxMaximum value of forward output power of a plurality of photovoltaic power generation systems with the third priority, PiAnd (4) the real-time power generation power of the ith photovoltaic power generation system, wherein n is the total number of the photovoltaic power generation systems.
6. The method of claim 4 for dynamically adjusting optical storage multi-target power, wherein: and a power coordination target is formulated through the scheduling layer and an instruction is issued, and the control layer operates a power coordination algorithm according to the instruction of the scheduling layer to control the power of each device of the device layer in real time.
CN202110079048.6A 2021-01-21 2021-01-21 Optical storage and charging multi-target power dynamic adjustment system and method Active CN112821418B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110079048.6A CN112821418B (en) 2021-01-21 2021-01-21 Optical storage and charging multi-target power dynamic adjustment system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110079048.6A CN112821418B (en) 2021-01-21 2021-01-21 Optical storage and charging multi-target power dynamic adjustment system and method

Publications (2)

Publication Number Publication Date
CN112821418A true CN112821418A (en) 2021-05-18
CN112821418B CN112821418B (en) 2023-07-07

Family

ID=75859083

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110079048.6A Active CN112821418B (en) 2021-01-21 2021-01-21 Optical storage and charging multi-target power dynamic adjustment system and method

Country Status (1)

Country Link
CN (1) CN112821418B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113890113A (en) * 2021-10-12 2022-01-04 国网江苏省电力有限公司常州供电分公司 Coordination control method and device of integrated energy system
CN114268115A (en) * 2021-12-23 2022-04-01 蜂巢能源科技(无锡)有限公司 Off-grid control method and device for optical storage and charging system and electronic equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104242337A (en) * 2014-08-14 2014-12-24 广东易事特电源股份有限公司 Real-time coordination and control method of photovoltaic micro-grid system
CN104979849A (en) * 2015-06-30 2015-10-14 华南理工大学 Grid-connected operation control method for user side microgrid
CN105262135A (en) * 2015-11-11 2016-01-20 广东电网有限责任公司电力科学研究院 Wind, light and diesel storage microgrid system containing composite energy storage and coordinated control method during grid connection
US20160218511A1 (en) * 2013-10-17 2016-07-28 Zhangjiakou Wind And Solar Power Energy Demonstration A monitoring system and method for megawatt level battery energy storage power plant
CN111355259A (en) * 2020-01-19 2020-06-30 中国电力科学研究院有限公司 Energy coordination control method of light storage charging station
CN111900727A (en) * 2020-07-15 2020-11-06 国网上海市电力公司 Light storage, charging and conversion integrated charging station collaborative optimization scheduling method and device based on PSO

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160218511A1 (en) * 2013-10-17 2016-07-28 Zhangjiakou Wind And Solar Power Energy Demonstration A monitoring system and method for megawatt level battery energy storage power plant
CN104242337A (en) * 2014-08-14 2014-12-24 广东易事特电源股份有限公司 Real-time coordination and control method of photovoltaic micro-grid system
CN104979849A (en) * 2015-06-30 2015-10-14 华南理工大学 Grid-connected operation control method for user side microgrid
CN105262135A (en) * 2015-11-11 2016-01-20 广东电网有限责任公司电力科学研究院 Wind, light and diesel storage microgrid system containing composite energy storage and coordinated control method during grid connection
CN111355259A (en) * 2020-01-19 2020-06-30 中国电力科学研究院有限公司 Energy coordination control method of light storage charging station
CN111900727A (en) * 2020-07-15 2020-11-06 国网上海市电力公司 Light storage, charging and conversion integrated charging station collaborative optimization scheduling method and device based on PSO

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113890113A (en) * 2021-10-12 2022-01-04 国网江苏省电力有限公司常州供电分公司 Coordination control method and device of integrated energy system
CN114268115A (en) * 2021-12-23 2022-04-01 蜂巢能源科技(无锡)有限公司 Off-grid control method and device for optical storage and charging system and electronic equipment
CN114268115B (en) * 2021-12-23 2023-12-15 蜂巢能源科技(无锡)有限公司 Off-grid control method and device for optical storage and charging system and electronic equipment

Also Published As

Publication number Publication date
CN112821418B (en) 2023-07-07

Similar Documents

Publication Publication Date Title
CN108470239B (en) Active power distribution network multi-target layered planning method considering demand side management and energy storage
CN108667052B (en) Multi-type energy storage system planning configuration method and system for virtual power plant optimized operation
CN103081290B (en) The regulation of the contribution to electrical network for the secondary energy
CN103986190B (en) Based on the wind-solar-storage joint electricity generation system smooth control method of generated output curve
JP6978572B2 (en) Virtual power plant
CN107994595A (en) A kind of system of peak load shifting control method and system and the application control method
CN107346896A (en) A kind of light stores up micro-grid system energy accumulation current converter host-slave parallel control method
CN106786490A (en) Distributed DC microgrid energy control method
CN107482608B (en) Direct-current micro-grid bus voltage coordination control method based on demand side power distribution
CN112821418A (en) System and method for dynamically adjusting optical storage and charging multi-target power
CN108933451B (en) Microgrid system, microgrid central controller thereof and power distribution control method
CN115296349B (en) Efficient economical power distribution method for comprehensive energy storage power station
CN103956758A (en) Energy storage SOC optimization control method in wind storage system
CN102437566A (en) Direct-current-bus-voltage-based adaptive coordination control method for distributed power supply
JP6821904B2 (en) Power system
CN111009912B (en) Thermal power plant energy storage configuration system and strategy based on power distribution network scene
CN111884221A (en) Micro power supply and energy storage real-time regulation and control method
CN115313453A (en) Multi-energy-storage-system coordination control method based on SOC improved droop control algorithm
CN110061492B (en) Energy storage system capacity optimal configuration method considering power supply reliability of power distribution network
CN111682566A (en) AGC frequency modulation method and device for energy storage auxiliary thermal power generating unit
CN210297275U (en) Stability control system suitable for little electric wire netting off-grid operation mode
JP6892191B2 (en) Power system
CN106253345B (en) A kind of electric power networks and its control method, device and system
CN112968472A (en) Multi-target optical storage and charging power dynamic coordination control system and control method
CN116470528A (en) Multi-time scale auxiliary frequency modulation method for regional power grid optical storage station

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant