AU2019100705A4 - Distributed Energy Control - Google Patents

Distributed Energy Control Download PDF

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Publication number
AU2019100705A4
AU2019100705A4 AU2019100705A AU2019100705A AU2019100705A4 AU 2019100705 A4 AU2019100705 A4 AU 2019100705A4 AU 2019100705 A AU2019100705 A AU 2019100705A AU 2019100705 A AU2019100705 A AU 2019100705A AU 2019100705 A4 AU2019100705 A4 AU 2019100705A4
Authority
AU
Australia
Prior art keywords
inverters
battery
server
inverter
storage state
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.)
Revoked
Application number
AU2019100705A
Inventor
Jeff CHANG YU
Anson HONGWEI ZHANG
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.)
Discover Energy Pty Ltd
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Discover Energy Pty Ltd
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Filing date
Publication date
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Priority to AU2019100705A priority Critical patent/AU2019100705A4/en
Application granted granted Critical
Publication of AU2019100705A4 publication Critical patent/AU2019100705A4/en
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
    • G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
    • G05B13/0205—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system
    • G05B13/026—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system using a predictor
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by 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
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Electricity, gas or water supply
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • 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
    • 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
    • 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
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using 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
    • 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
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • 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
    • Y04S20/248—UPS systems or standby or emergency generators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Evolutionary Computation (AREA)
  • Medical Informatics (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A system and method for controlling the system for distributed energy control, the system comprising: a plurality of local installations connected to a power grid, each local installation comprising an energy source, a battery and an inverter, the inverter being operable in at least a storage state and a delivery state, wherein the delivery state comprises energy flowing from the battery to the power grid and the storage state comprises energy flowing from the energy source to the battery; a centralised server in communication with each of the inverters of the local installations; wherein the server is configured to switch all of the inverters between the storage state and the delivery state. ~Th I ( "K ~' N y C> V

Description

DISTRIBUTED ENERGY CONTROL
Technical Field
Embodiments relate to a system of method for distributed energy control.
Background
Domestic energy storage solutions are commercially available. Many of these comprise a solar array, battery and inverter so that electrical energy produced by the solar array can be selectively delivered to charge the battery or fed back to the grid, depending on the user’s preferences.
If a user wishes to control their own inverter, it has previously been necessary to install additional hardware which provides communication between the user and the converter.
Summary of the Disclosure
An embodiment provides a system for distributed energy control, the system comprising:
a plurality of local installations connected to a power grid, each local installation comprising an energy source, a battery and an inverter, the inverter being operable in at least a storage state and a delivery state, wherein the delivery state comprises energy flowing from the battery to the power grid and the storage state comprises energy flowing from the energy source to the battery;
a centralised server in communication with each of the inverters of the local installations;
wherein the server is configured to switch all of the inverters between the storage state and the delivery state.
The server may connect directly to the inverter without any intervening hardware.
The server may be configured to switch all of the inverters selectively between the storage state and the delivery state. The server may be configured to switch all of the inverters between the storage state and the delivery state in unison.
The inverter may convert electrical current between AC and DC.
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-22019100705 27 Jun 2019
The server may be configured to switch all of the inverters regardless of the preferences of an owner of each local installation. This allows the local installations to serve as an emergency backup if the main grid should fail.
The server may be configured to switch all of the inverters taking account of the preferences of an owner of each local installation. For example, the owner may allocate a certain percentage of their battery for distribution to the grid in the case of an emergency, or other circumstances. For example, the owner may specify that, provided the battery is over 60% charge, 20% of that will be available for distribution to the grid.
It is to be realised that the case where the server is configured to switch all of the inverters regardless of the owner preferences may be used in conjunction with the case where the server is configured to switch all of the inverters taking into account the owner preferences. For example, the system may determine a severity of a blackout and choose the corresponding case appropriately. The severity of a blackout may depend on a likely duration of the blackout.
The server and the corresponding functionality may be located in a computing cloud.
A further embodiment relates to a method for controlling a system for distributed energy control, the system comprising:
a plurality of local installations connected to a power grid, each local installation comprising an energy source, a battery and an inverter, the inverter being operable in at least a storage state and a delivery state, wherein the delivery state comprises energy flowing from the battery to the power grid and the storage state comprises energy flowing from the energy 25 source to the battery;
a centralised server in communication with each of the inverters of the local installations;
wherein the method comprises switching all of the inverters between the storage state and the delivery state.
The method may comprise switching all of the inverters selectively between the storage state and the delivery state. The method may comprise switching all of the inverters between the storage state and the delivery state in unison.
The inverter may convert electrical current between AC and DC.
11475891_1 (GHMatters) P111449.AU 27/06/19
-32019100705 27 Jun 2019
The method may comprise switching all of the inverters regardless of the preferences of an owner of each local installation. This allows the local installations to serve as an emergency backup if the main grid should fail.
The method may comprise switching all of the inverters taking account of the preferences of an owner of each local installation. For example, the owner may allocate a certain percentage of their battery for distribution to the grid in the case of an emergency, or other circumstances. For example, the owner may specify that, provided the battery is over 60% charge, 20% of that will be available for distribution to the grid.
It is to be realised that the case where method comprises switching all of the inverters regardless of the owner preferences may be used in conjunction with the case where the method comprises switching all of the converters taking into account the owner preferences. For example, the method may determine a severity of a blackout and choose the corresponding case appropriately. The severity of a blackout may depend on a likely duration of the blackout.
The server and the corresponding functionality may be located in a computing cloud.
A further embodiment extends to system comprising a communications module, an inverter connected to an energy source such as a solar array, a battery 3 and to a power grid, the communications module being connected to a server and being adapted, in response to commands received from the server, to operate the inverter to switch between a storage state and a delivery state, wherein the delivery state comprises energy flowing from the battery to the power grid and the storage state comprises energy flowing from the energy source to the battery
Description of the Drawings
Embodiments are herein described, with reference to the accompanying drawings in which:
Figure 1 is a schematic illustration of a system for regulating distributed energy;
Figure 2 is a schematic illustration of aspects of the system of Figure 1; and
Figure 3 is an illustration of a component of a system according to an
11475891_1 (GHMatters) P111449.AU 27/06/19
2019100705 27 Jun 2019
-4 embodiment.
Detailed Description of Specific Embodiment
Figure 1 illustrates a system 10 for distributed energy control. The system 10 comprises three local installations 12A, 12B and 12C. Each of the local installations 5 comprises a corresponding solar array 14A, 14B and 14C; inverter 16A, 16B and 16C; and battery 18A, 18B and 18C. The three inverters 16A, 16B and 16C are connected to a server 20 which is, in turn connected to a data store 22.
It is to be realised that the depiction of the server 20 and data store 22 is largely symbolic. It is not necessary for embodiments that the server or the data 3 store comprise a standalone hardware instantiation. In further embodiments, the server and data store are implemented using cloud computing resources.
Each of the inverters 16A, 16B and 16C is connected to the main power grid 30. Although Figure 1 illustrates a direct connection between the inverters and the grid, it is to be realised that this connection may be by means of the standard power 5 supply to the location where the respective local installations are installed and therefore is through the usage meters at the location.
The connections between the inverters 16A, 16B and 16C and the grid 30 are physical connections since this will involve the transfer of significant current. Although the connections between the inverters 16A, 16B and 16C and the server 3 20 are illustrated as a physical connection is, it is to be realised that these connections may be virtual in nature and may, for example, be implemented of the Internet, comprising both wired and wireless connections.
Figure 2 illustrates the inverters 16A, 16B and 16C connected to the server 20. Each of the inverters has a storage state (schematically represented by downward arrows 16A.1, 16B.1 and 16C.1) and a delivery state (schematically represented by upward arrows 16A.2, 16B.2 and 16C.2). In the storage state, the inverter delivers electrical energy received from the corresponding solar array 14 to the corresponding battery 18 and this involves providing Direct Current. In the delivery state, the inverter delivers electrical energy received from the corresponding solar array and/or the battery to the grid 30. This involves providing Alternating Current.
The server 20 includes an Application Programming Interface (API) 32
11475891_1 (GHMatters) P111449.AU 27/06/19
-52019100705 27 Jun 2019 schematically illustrated in Figure 2. Although this Figure does not illustrate the data store 22, it is to be realised that the hardware and software elements of the server 20 and the data store 22 interact with one another to provide the functionality as herein described.
Through the use of the API 32, the server is able to switch each of the inverters 16A, 16B and 16C between the storage state and the delivery state. This may be particularly useful if, for example, the main grid 30 experiences a blackout. In this instance, energy stored in the batteries 18A, 18B and 18C can be delivered to the grid, therefore providing electricity to the services which might not otherwise have access there to.
Furthermore, the operator of the server 20 may be able to take advantage of fluctuations in the spot price of the grid, providing energy when it is expensive, and storing energy when it is cheap. Since any number of inverters can be operated together, it is possible to take advantage of economies of scale, which would not be 5 available to an individual attempting to do the same.
In certain embodiments, the user of the local installations 12A, 12B and 12C is able to set a preference, which is stored in the data store 22 that which is read by the API 32. The preference stipulates whether or not that user wishes to allow switching of their inverter from the storage state to the delivery state or vice versa.
The operator of the server may, in certain circumstances, take heed of the user preference and exclude those inverters from the centralised switching. However, in certain circumstances, such as dire emergencies, the user preferences may be overridden when it is deemed that a greater good may be served at the expense of the user’s energy storage.
In a further embodiment the user may specify the circumstances under which switching is permitted. For example, they may specify that 20% of the battery capacity is available for switching to the grid if the battery has a charge of more than a set limit, for example, 50%. It is to be realised that many alternatives and alterations are possible to the stipulated parameters.
In the embodiment discussed, the inverters 16A, 16B and 16C connect to the server 20 without any intervening hardware. By intervening hardware, it is assumed that direct communication between the server and the corresponding inverters is possible by means of a communications network, and it is not necessary to
11475891_1 (GHMatters) P111449.AU 27/06/19
-62019100705 27 Jun 2019 implement any further hardware to facilitate that communication.
However, in an alternate embodiment, where the inverter has no communications abilities, it may be necessary to implement an additional hardware component. Such embodiments make use of a communications module 40 connected to the inverter.
Such a communications module 40 is illustrated in dashed outline in Figure 2, and further illustrated in Figure 3. As shown in Figure 3, the communications module in this embodiment operates by communicating with the use of an aerial 42 which the illustrated module uses to communicate with the server using the cellular phone network. However, embodiments are not limited in the specific mode of communication used. Other communication modules may use wireless or wired communication.
The communications module 42 is further connected to a corresponding inverter (not shown in Figure 3) and is able to direct the inverter to charge the corresponding battery, or to deliver the energy from the corresponding solar array to the main grid.

Claims (4)

  1. Claims
    1. A system for distributed energy control, the system comprising:
    a plurality of local installations connected to a power grid, each local
    5 installation comprising an energy source, a battery and an inverter, the inverter being operable in at least a storage state and a delivery state, wherein the delivery state comprises energy flowing from the battery to the power grid and the storage state comprises energy flowing from the energy source to the battery;
    3 a centralised server in communication with each of the inverters of the local installations;
    wherein the server is configured to switch all of the inverters between the storage state and the delivery state.
  2. 2. The server according to claim 1 configured to switch all of the inverters
    5 selectively between the storage state and the delivery state.
  3. 3. A method for controlling a system for distributed energy control, the system comprising:
    a plurality of local installations connected to a power grid, each local installation comprising an energy source, a battery and an inverter, the
    3 inverter being operable in at least a storage state and a delivery state, wherein the delivery state comprises energy flowing from the battery to the power grid and the storage state comprises energy flowing from the energy source to the battery;
    a centralised server in communication with each of the inverters of the 25 local installations;
    wherein the method comprises switching all of the inverters between the storage state and the delivery state.
  4. 4. The method according to claim 3 comprising switching all of the inverters selectively between the storage state and the delivery state.
    30 5. The method according to claim 4 or claim 5 comprising switching all of the inverters regardless of the preferences of an owner of each local installation.
AU2019100705A 2019-06-27 2019-06-27 Distributed Energy Control Revoked AU2019100705A4 (en)

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Effective date: 20190822