Electrical transmission or interconnection systems – Plural load circuit systems – Control of current or power
Patent
1980-12-03
1982-01-12
Hix, L. T.
Electrical transmission or interconnection systems
Plural load circuit systems
Control of current or power
307 39, G05B 602
Patent
active
043107702
ABSTRACT:
System, method and apparatus for carrying out the shedding of electrical loads on a predetermined priority basis. A sensor network (32) detects a demand load at a power input (10) and develops a signal representative thereof. This signal is introduced to a series of controllers (36-39) along with a signal from an allowable load control circuit (48) which represents a predetermined maximum allowable load value. The controllers respond when the demand load is higher than the allowable load, a priority delay network (108) in each having a time-out interval corresponding with the relative priority basis assigned each load. Simultaneously, with the shedding of a load at the termination of the priority delay, a fictitious load feedback signal (102) is summed (96) with the demand load signal of the sensor. A reset control (90) responds in conjunction with a predetermined review interval timing function (144) to re-evaluate the priorities of shed loads in the event of a drop in demand load.
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D. M. Yore, "A Guide to Demand Control", Scientific Columbus, Inc., Columbus, Ohio 43212.
Keener Harold M.
Sciarini Michael J.
Dwyer James L.
Hix L. T,.
Ohio Agricultural Research and Development Center
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