Research Reports from the Department of Operations
Document Type
Report
Publication Date
9-15-1965
Abstract
The study described in this working paper is a first attempt of its kind to develop a computerized mathematical procedure for controlling an electric power system in emergency situations. An emergency situation arises when there is reason to believe that the system is unable to supply all the power demanded by customers. The C.E.I. system is supported by interconnection tie lines that help overcome power deficiency in almost all conceivable situations. Nevertheless, in cases of a breakdown involving more than one major component of the network, the interconnections might not be able to withstand the additional flows into the C.E.I. system. Such situations, although they do not frequently occur, may result in major damage, particularly when there is a loss in the tie connection. Emergency situations require quick corrective action to prevent deterioration of the system. The main function of the procedures developed in this study is to enable the human who controls the system to perform the best corrective actions in the shortest time possible. For this purpose, the procedure requires further development to be used as an on-line decision-maker. The basic part of the emergency procedures is the "optimizer" that calculates what power should be generated by each generator to maximize the satisfied amount of load, subject to the system constraints and characteristics under the prevailing emergency conditions. The general procedure, which is called the dynamic restoration procedure, uses the optimizer to issue instructions for shifting the system from its present deteriorated state to the optimal state, where satisfied demand is maximized. The optimizer is a general procedure that will maximize or minimize any given objective function subject to the constraints and characteristics of any given electrical power network. The optimizer can also be used for solving various planning and operations problems which are not on-line. For example, it is possible to determine the best allocation and capacity of capacitors to be installed in the system, or, if required, the most economical dispatch of imaginary power, etc. The procedures given in this report are not directly available for immediate use. It is necessary to adapt them to the C.E.I. computer and perform some test runs for debugging purposes.
Keywords
Operations research, Electric power systems--Control, Emergency management--Mathematical models, Electric power system stability, Electric power failures, Mathematical optimization
Publication Title
Technical Memorandums from the Department of Operations, School of Management, Case Western Reserve University
Issue
Technical memorandum no. 41
Rights
This work is in the public domain and may be freely downloaded for personal or academic use
Recommended Citation
Avi-Itzhak, Benjamin; Dean, Burton V.; and Sasieni, Maurice W., "A Dynamic Restorative Emergency Procedure for an Electrical Power Network" (1965). Research Reports from the Department of Operations. 168.
https://commons.case.edu/wsom-ops-reports/168