System for monitoring and assessing electrical circuits and method of operation
AssigneesConsolidated Edison Company of New York, Inc., Softstuf, Inc.
InventorsSanjay Bose, Anthony T. Giuliante, Amir Makki, Maria Rothweiler Makki
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Abstract
A system for collecting data and monitoring the operation of electrical circuits, such as branch circuits at a substation is provided. The system collects data from a plurality of sensors coupled to a plurality of electrical equipment associated with a circuit. The data from the sensors is collected and used to determine the activation of the electrical equipment, such as a protective relay for example. The data is further transformed to allow assessment of the circuit's performance against desired parameters.
Claims31
A method of identifying a relay, said method operable via a processor, said method comprising:
- coupling a first plurality of sensors to a relay trip ladder, wherein each of said first plurality of sensors is associated with one of a plurality of relays;
- collecting a first electrical data from said first plurality of sensors;
- identifying a trip signal on said trip ladder;
- determining a first relay of said plurality of relays from said first electrical data, wherein said first relay generated said trip signal.
A method of identifying an activated relay in a protective relay cabinet, where said protective relay cabinet includes a first relay, a second relay and a third relay, each of said first relay, said second relay and said third relay being operably coupled to a circuit breaker by a trip ladder, said method operable via a processor, said method comprising:
- coupling a first sensor to said trip ladder adjacent said first relay;
- coupling a second sensor to said trip ladder adjacent said second relay;
- coupling a third sensor to said trip ladder adjacent said third relay;
- detecting a trip signal on said trip ladder;
- determining which of said first sensor, said second sensor and said third sensor measured said trip signal;
- and,
- determining said second relay generated said trip signal.
A method of assessing an electrical circuit, said method operable via a processor, said method comprising:
- collecting a first data set representing a first electrical parameter;
- collecting a second data set representing a second electrical parameter;
- creating a graphical plot of said first data set and said second data set;
- comparing a characteristic of said graphical plot to a threshold parameter;
- determining that said threshold parameter has been violated by said characteristic.
A method of assessing an electrical circuit, said method operable via a processor, said method comprising:
- collecting a first data set representing a first electrical parameter;
- collecting a second data set representing a second electrical parameter;
- collecting a third data set representing a third electrical parameter;
- storing said first data set, said second data set and said third data set;
- generating a polar plot of said stored first data set, said stored second data set, and said stored third data set;
- comparing a characteristic of said polar plot to a threshold parameter;
- initiating an action if said threshold parameter has been violated by said characteristic.
A system for assessing an electrical circuit comprising:
- a first sensor measuring a first electrical parameter of said electrical circuit;
- a second sensor measuring a second electrical parameter of said electrical circuit;
- a data storage device operably coupled to store data received from said first sensor and said second sensor;
- and,
- a controller responsive to executable computer instructions when executed on the controller for generating a polar plot of said stored data, said controller further responsive to executable instructions to compare a characteristic of said polar plot to a threshold parameter and determining if said threshold parameter has been exceeded.
Dependencies are inferred from the claim text.