Source: https://patents.google.com/patent/US9647994B2/en
Timestamp: 2019-09-21 21:45:44
Document Index: 305796576

Matched Legal Cases: ['§119', 'Application No. 61', 'Application No. 2014219244', 'Application No. 2014219246', 'Application No. 14754339', 'Application No. 14754714', 'Application No. 14808081', 'Application No. 14810273', 'Application No. 14811042', 'Application No. 2322', 'Application No. 2323', 'Application No. 2325', 'Application No. 15', 'Application No. 14754339', 'Application No. 14754714']

US9647994B2 - System and method for grid based cyber security - Google Patents
US9647994B2
US9647994B2 US14/720,780 US201514720780A US9647994B2 US 9647994 B2 US9647994 B2 US 9647994B2 US 201514720780 A US201514720780 A US 201514720780A US 9647994 B2 US9647994 B2 US 9647994B2
US14/720,780
US20160112378A1 (en
2015-05-23 Application filed by DOMINION ENERGY TECHNOLOGIES, INC., Astrolink International LLC filed Critical DOMINION ENERGY TECHNOLOGIES, INC.
2016-04-21 Publication of US20160112378A1 publication Critical patent/US20160112378A1/en
2017-05-09 Publication of US9647994B2 publication Critical patent/US9647994B2/en
The present application is a continuation of United States non-provisional patent application number 13/493,983 filed on Jun. 11, 2012 and entitled System and Methods for Grid Based Cyber Security, now U.S. Pat. No. 9,059,842 B2, the disclosure of which is herewith incorporated by reference in its entirety, which in turn claims benefit under 35 USC §119(e) of U.S. Provisional Application No. 61/495,173, filed on Jun. 9, 2011.
1. A method for establishing a secure communication path over an electrical distribution grid, comprising:
receiving, by a computing device, a signal from a receiver coupled to the electrical distribution grid in an electrical substation, the signal comprising:
a request, received by the receiver via the electrical distribution grid from an intelligent communicating device (ICD) located at an edge of the electrical distribution grid, for a key token for use in secure communications;
an electrical phase on which the signal was received by the receiver; and
an electrical feeder on which the signal was received by the receiver;
based on the electrical phase and the electrical feeder, inferring an inferred location of the ICD;
based on the inferred location of the ICD, obtaining the key token; and
causing, by the computing device, the key token to be communicated to the ICD via the electrical distribution grid.
2. The method of claim 1 wherein the request further comprises a unique identifier (ID) that uniquely identifies the ICD, and wherein based on the inferred location of the ICD, obtaining the key token comprises:
accessing a grid map that correlates unique IDs of ICDs coupled to the electrical distribution grid to corresponding physical locations of the ICDs;
determining that the inferred location of the ICD matches the physical location of the ICD identified in the grid map; and
based on determining that the inferred location of the ICD matches the physical location of the ICD identified in the grid map, obtaining the key token.
3. The method of claim 1 wherein obtaining the key token comprises:
sending a request to a key distribution server for the key token; and
receiving the key token from the key distribution server.
4. A system for establishing a secure communication path over an electrical distribution grid, comprising:
receive a signal from a receiver coupled to the electrical distribution grid in an electrical substation, the signal comprising:
a request received by the receiver via the electrical distribution grid from an intelligent communicating device (ICD) located at an edge of the electrical distribution grid for a key token for use in secure communications;
based on the inferred location of the ICD, obtaining a key token; and
causing, by the computing device, a transmitter to transmit the key token to the ICD via the electrical distribution grid.
5. The system of claim 4 wherein the request further comprises a unique identifier (ID) that uniquely identifies the ICD, and wherein to obtain the key token the processor device is further configured to:
access a grid map that correlates unique IDs of ICDs coupled to the electrical distribution grid to corresponding physical locations of the ICDs;
determine that the inferred location of the ICD matches the physical location of the ICD identified in the grid map; and
based on determining that the inferred location of the ICD matches the physical location of the ICD identified in the grid map, obtain the key token.
6. The system of claim 4 wherein to obtain the key token the processor device is further configured to:
send a request to a key distribution server for the key token; and
receive the key token from the key distribution server.
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US13/493,983 Continuation US9059842B2 (en) 2011-06-09 2012-06-11 System and method for grid based cyber security
US15/450,153 Division US10356055B2 (en) 2011-06-09 2017-03-06 System and method for grid based cyber security
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