Method and system for distributed power management
AssigneeABB Technology AG
InventorsGanesh KULATHU, Martin Nykvist, Wolfgang Wimmer, Otto Van Der Wal
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Abstract
A method and system for distributed power management with individual IEDs in a substation are disclosed. An exemplary technique can include providing multiple IEDs in a power network in the substation and integrating an intrinsic load shedding function in each IED. The technique can include identifying a power imbalance state at an individual IED and load shedding the individual IED using an intrinsic load shedding function when a power imbalance state is identified in a coordinated manner to achieve distributed power management in the substation.
Claims15
A method for distributed power management in an electrical power network divided into one or more sections and having plural intelligent electronic devices (IEDs) communicatively connected in a communication network configured for power management function in the one or more sections of the electrical power network, the method comprising:
- identifying a first IED from the plural IEDs in a section of the electrical power network that issues a load shed command;
- exchanging power network data between the first IED and one or more IEDs from the plural IEDs in the electrical power network;
- having the first IED or a second IED of the plural IEDs in the electrical power network identify a power imbalance state in the electrical power network based on the exchanged power network data and generate a load shed trigger in the electrical power network;
- having the first IED estimate a power balance condition in the electrical power network based on the load shed trigger generated in the electrical power network;
- and
- having the first IED or the second IED perform coordinated power management in the electrical power network based on the estimated power balance condition in the electrical power network.
A system for distributed power management in an electrical power network divided into one or more sections and having plural intelligent electronic devices (IEDs) communicatively connected in a communication network configured for a power management function in the one or more sections of the electrical power network, the system comprising:
- a plurality of identified IEDs for one or more sections in a electrical power network to issue a load shed command in their respective sections in coordination with each other, wherein the coordination is established with a programmed time delay in each of the identified IEDs based on a priority of the identified IED or/and through message communication between the identified IEDs.
An IED for distributed power management in an electrical power network, the IED comprising:
- means for communicating with other IEDs;
- and
- means for issuing a load shed command at a programmed time delay and/or based on a message communication received by the IED.
Dependencies are inferred from the claim text.