US 11,953,534 B2Granted

Detection of lightning and related control strategies in electric power systems

AssigneeSchweitzer Engineering Laboratories, Inc.

InventorCody W. Tews

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Abstract

The present disclosure pertains to systems and methods for detecting lightning and using such information to implement appropriate control strategies in an electric power system. In one embodiment, a system may include a data acquisition subsystem configured to receive a plurality of representations of electrical conditions associated with at least a portion of the electric power system. The system may also include a traveling wave subsystem to identify an initial traveling wave in the electric power system and generated by lightning and identify at least one subsequent traveling wave in the electric power system and generated by lightning. A lightning analysis subsystem may perform an analysis of the initial traveling wave and the at least one subsequent traveling wave to determine a characteristic of the ionosphere based on the analysis and a lightning location. An adaptive control subsystem may adjust a control strategy based on the lightning location.

Claims19

Dependent claims

A system to detect lightning and to control at least a portion of an electric power system, the system comprising:

a data acquisition subsystem configured to receive a plurality of representations of electrical conditions associated with at least a portion of the electric power system;
a traveling wave subsystem to:
identify an initial traveling wave generated by lightning and traveling in an electrical conductor configured to provide electric power as part of the electric power;
open a detection window upon detection of the initial traveling wave;
monitor for at least one subsequent traveling wave during the detection window;
and
identify the at least one subsequent traveling wave generated by lightning and traveling in the electrical conductor configured to provide electric power as part of the electric power;
a lightning analysis subsystem to perform an analysis of the initial traveling wave and the at least one subsequent traveling wave and to determine:
an ionosphere characteristic based on the analysis;
and
a lightning location;
and
an adaptive control subsystem to adjust a control strategy based on the lightning location and during the detection window;
wherein, the adjusting of the control strategy comprises blocking an automatic reclosure algorithm following a trip, and the adjusting of the control strategy is retrained to reduce the risk of fire.

11 more elements

A method of detecting lightning and controlling at least a portion of an electric power system, the method comprising:

receiving, using a data acquisition subsystem, a plurality of representations of electrical conditions associated with at least a portion of the electric power system;
identifying, using a traveling wave subsystem, an initial traveling wave generated by lightning and traveling in an electrical conductor configured to provide electric power as part of the electric power system;
opening, using the traveling wave subsystem, a detection window upon detection of the initial traveling wave;
monitoring, using the traveling wave subsystem, for at least one subsequent traveling wave during the detection window;
identifying, using the traveling wave subsystem, the at least one subsequent traveling wave generated by lightning and traveling in the electrical conductor configured to provide electric power as part of the electric power;
performing, using a lightning analysis subsystem, an analysis of the initial traveling wave and the at least one subsequent traveling wave to determine:
an ionosphere characteristic based on the analysis;
and
a lightning location;
and
adjusting, using an adaptive control subsystem, a control strategy based on the lightning location and during the detection window;
wherein, adjusting the control strategy comprises blocking an automatic reclosure algorithm following a trip to reduce the risk of fire.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/242,449Filed 28 Apr 2021
Published: US 2022/0349929 A13 Nov 2022
Granted: 9 Apr 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G01R 29/0842
Field measurements related to measuring influence on or from apparatus, components or humans , e.g. in ESD, EMI, EMC, EMP testing, measuring…:…
G01R 29/085
Field measurements related to measuring influence on or from apparatus, components or humans , e.g. in ESD, EMI, EMC, EMP testing, measuring…: for…
H02H 7/265
Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has…:…
G01R 31/08
Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by…