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Title: Engineered setpoints for autonomous distributed sensors and actuators

Patent ·
OSTI ID:1107356

Loads on an electric power system are configured with under-frequency relays in which the frequency setpoints and delay times for reclosure are uniformly distributed. If demand exceeds supply in the system, frequency will decrease. The decrease in frequency will actuate relays and reduce load to the point where demand will meet the available supply. After its engineered delay time, each relay will attempt to close contact and reestablish the load.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Secuirty, LLC. (Livermore, CA)
Patent Number(s):
8,548,636
Application Number:
12/566,869
OSTI ID:
1107356
Country of Publication:
United States
Language:
English

References (19)

Electrical appliance energy consumption control methods and electrical energy consumption systems patent September 2008
Digital peak detector patent June 2000
Motor control circuit with a low voltage monitor patent September 1998
Distributed frequency relay patent November 2001
Grid Responsive Control Device patent-application March 2010
Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices patent-application December 2004
Intelligent distributed energy storage system for demand side power management patent June 2008
Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices patent December 2006
Grid responsive control device patent March 2013
Multi-function intelligent electronic device with secure access patent August 2008
Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices patent-application October 2006
Thermostat device with line under frequency detection and load shedding capability patent July 2007
System and method for island detection patent February 2005
Data transfer switching device and method of use therefore patent March 1999
Device and a method for power balancing patent June 2011
Electrical appliance energy consumption control methods and electrical energy consumption systems patent March 2006
Line linkage protective device for electricity generation equipment patent May 2004
Voltage fluctuation compensating apparatus patent October 2005
Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices patent December 2011

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Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION