INFRASTRUCTURE ENHANCEMENT FOR RESTORATION OF DISTRIBUTION SYSTEMS FOLLOWING EXTENDED OUTAGES
Title:
INFRASTRUCTURE ENHANCEMENT FOR RESTORATION OF DISTRIBUTION SYSTEMS FOLLOWING EXTENDED OUTAGES
Author:
Pahwa, Anil Ucak, Canbolat
Appeared in:
Electric power components & systems
Paging:
Volume 22 (1994) nr. 6 pages 711-726
Year:
1994-11-01
Contents:
Advances in micro-electronics, computers, and communications technology has made it possible to automate several functions in distribution systems. Such automation will make delivery of electricity more efficient, enhance reliability, and lead to more effective utilization and life-extension of existing electricity distribution infrastructure. Moreover, distribution automation offers opportunities for implementation of new functions. With certain enhancements in the distribution system infrastructure maximum benefits of distribution automation can be accrued. In this paper, an example of such infrastructure enhancement is presented. Specifically, application of remotely controlled three-phase and single-phase sectionalizers in restoration of power in distribution systems following an extended outage is presented. The remotely controlled sectionalizers can be opened and closed to supply power to specific parts of the system. Thus, restoration can be done in steps using these sectionalizers. Therefore, the firm capacity of substation transformers in a distribution system can be decreased. A delayed exponential model is used to represent the load characteristics during cold load pickup following an extended outage. The maximum and the minimum restoration times are determined for two different arrangements of sectionalizers. Also included in the paper is a brief description of SCADA, AM/FM and their relationship to distribution automation, and a short description of communication infrastructure needed for implementation of a Distribution Management System (DMS).
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