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US 2020/0235578 A1Published application
Control of Multiple Energy Storages In A Microgrid
AssigneeABB Schweiz AG
InventorRitwik Majumder
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AssigneeABB Schweiz AG
InventorRitwik Majumder
Estimating the term…
A method performed by a network controller of an electrical microgrid having a plurality of energy storages. Each of the energy storages is associated with a respective storage controller. The method includes receiving information about a measurement made at a remote location in the microgrid. The method also includes obtaining respective participation factors in respect of the remote location for each of at least a first energy storage and a second energy storage of the plurality of energy storages. The method also includes obtaining respective states of charge for each of the at least first and second energy storages. The method also includes, for each of the at least first and second energy storages, calculating a reference value for the energy storage, and sending the reference value to the storage controller with which the energy storage is associated. The calculating includes calculating the reference value based on the obtained participation factors and the obtained states of charge.
A method performed by a network controller (4) of an electrical power microgrid (1) comprising a plurality of energy storages (2), each energy storage being associated with a respective storage controller (3), the method comprising:
The method of any preceding claim, wherein the measurement comprises a voltage measurement and the reference value is for a voltage reference of the energy storage (2), and/or wherein the measurement comprises a current measurement and the reference value is for a current reference of the energy storage (2).
The method of any preceding claim, wherein the obtaining (S2) of participation factors comprises obtaining participation factors for current control mode and/or for voltage control mode of the microgrid (1).
The method of any preceding claim, wherein the obtaining (S2) of participation factors comprises receiving the participation factors from the respective storage controllers (3) and/or from an operating system of the microgrid (1), e.g. a supervisory control and data acquisition, SCADA, operating system.
The method of any preceding claim, wherein the measurement indicates that the microgrid (1) has been islanded.
The method of any preceding claim, wherein the remote location (RL) is at a Point of Common Coupling, PCC, (7) of the microgrid (1) with an AC grid (6).
A network controller (4) for an electrical microgrid (1) comprising a plurality of energy storages (2), each energy storage being associated with a respective storage controller (3), the network controller comprising:
A method performed by a storage controller (3) associated with an energy storage (2) in an electrical microgrid (1), the method comprising:
A storage controller (3) configured for being associated with an energy storage (2) in an electrical microgrid (1), the storage controller comprising:
Dependencies are inferred from the claim text.