Systems and methods for phase identification using relative phase angle measurements
AssigneeAclara Technologies LLC
InventorsChristopher Fleck, Roger Smith, Rebecca Ross
Life of this patent
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Abstract
Systems for determining a phase of a device coupled to an electrical distribution system. The system includes a number of gateway devices configured to transmit a synchronization signal. The gateway device receives a node response message from a first node device that includes a duration value indicating a time between a receipt of the transmitted synchronization signal and a detected zero crossing. The gateway device compares the duration value against duration values received from node devices with a known phase connection and determines a phase of the first node device based on the comparison.
Claims20
A system for determining a phase of one or more nodes coupled to an electrical distribution system, the system comprising:
- a plurality of gateway devices, each of the gateway devices in electronic communication with one or more node devices connected to a power distribution network and having a memory and one or more electronic processors configured to:
- transmit a synchronization message;
- receive a node response message from a first node device of the one or more node devices, wherein the node response message includes a duration value indicating a duration between a receipt of the transmitted synchronization message and a detected zero crossing;
- compare the duration value against previous duration values received from at least a second node device with a known phase connection;
- determine a phase of the first node device based on the comparison;
- and
- store the phase of the first node device in the memory.
A method for determining a phase at a node device connected to a power distribution network, the method comprising:
- transmitting a first synchronization message to one or more node devices;
- receiving a data message from a first node device of the one or more node devices, wherein the data message includes a duration value;
- comparing the duration value received from the first node device against duration values received from at least a second node devices with a known phase connection;
- determining a phase of the first node device based on the comparison;
- and
- storing the phase of the first node device in a memory.
A method for determining a phase at a node device connected to a power distribution network, the method comprising:
- transmitting a first synchronization message to one or more node devices;
- receiving a data message from a first node device of the one or more node devices, wherein the data message includes a duration value;
- comparing the duration value received from the first node device against duration values received from at least a second node devices with a known phase connection;
- determining a phase of the first node device based on the comparison, wherein determining the phase of the first node device comprises determining a relationship of the duration value of the first node device to the durational values received from the at least one node device with a known phase connection, and wherein the phase of the first node device is determined to be one of the same phase, a +120° offset phase, and a −120° offset phase based on the determined relationship;
- and
- storing the phase of the first node device in a memory.
Dependencies are inferred from the claim text.