Network protector that detects an error condition
AssigneeEaton Intelligent Power Limited
InventorsHossein Ghassempour Aghamolki, Swaroop Gajare, Amal Thomas, Amit Govind Kolge
Life of this patent
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Abstract
A network protector includes: a resettable switching apparatus configured to control an electrical connection between a first distribution transformer and a first electrical feeder of a secondary electrical distribution network; a sensor apparatus configured to sense one or more properties of electrical power in the first electrical feeder; and a controller configured to: analyze one or more of the sensed properties of the electrical power in the first electrical feeder to determine whether an error condition exists in the secondary electrical distribution network; and open the resettable switching apparatus if an error condition exists.
Claims21
A network protector comprising:
- a resettable switching apparatus configured to control an electrical connection between a first distribution transformer and a first electrical feeder of a secondary electrical distribution network;
- a sensor apparatus configured to sense one or more properties of electrical power in the first electrical feeder;
- and
- a controller configured to:
- determine whether reverse power flow exists in the first electrical feeder,
- analyze one or more of the sensed properties of the electrical power in the first electrical feeder to determine whether an error condition exists in the secondary electrical distribution network;
- open the resettable switching apparatus if an error condition exists;
- and
- maintain the resettable switching apparatus in a closed state if an error condition does not exist regardless of whether reverse power flow exists such that the network protector allows bi-directional current flow in the absence of an error condition.
A system comprising:
- a first network protector configured to control an electrical connection between a first distribution transformer and a first electrical feeder of a secondary electrical distribution network, the first network protector comprising:
- a first resettable switching apparatus;
- a first sensor apparatus configured to sense one or more properties of electrical power in the first electrical feeder;
- and
- a first controller configured to analyze one or more of the sensed properties of the electrical power in the first electrical feeder to determine whether an error condition exists in the secondary electrical distribution network;
- and
- a second network protector configured to control an electrical connection between a second distribution transformer and a second electrical feeder of the secondary electrical distribution network, the second network protector comprising:
- a second resettable switching apparatus;
- a second sensor apparatus configured to sense one or more properties of electrical power in the second electrical feeder;
- and
- a second controller configured to analyze one or more of the sensed properties of the electrical power in the first electrical feeder to determine whether an error condition exists in the secondary electrical distribution network,
- wherein the first electrical feeder and the second electrical feeder are configured to electrically connect to the same load.
A network protector comprising:
- a resettable switching apparatus configured to control an electrical connection between a first distribution transformer and a first electrical feeder of a secondary electrical distribution network;
- a sensor apparatus configured to sense one or more properties of electrical power in the first electrical feeder;
- and
- a controller configured to:
- analyze one or more of the sensed properties of the electrical power in the first electrical feeder to determine whether an error condition exists in the secondary electrical distribution network;
- and
- open the resettable switching apparatus if an error condition exists, wherein the first electrical feeder is configured to be electrically connected to one or more distributed energy resources.
Dependencies are inferred from the claim text.