Paper Information

Title: 

INTERRUPTIBLE LOAD MANAGEMENT METHOD BY CONSIDERING VOLTAGE STABILITY IN A RESTRUCTURED POWER SYSTEM: AN OPF APPROACH

Type: PAPER
Author(s): MOZAFARI B.,AMRAEE T.,RANJBAR A.M.,SHIRANI A.R.,OSTADI A.
 
 
 
Name of Seminar: INTERNATIONAL POWER SYSTEM CONFRENCE
Type of Seminar:  CONFERENCE
Sponsor:  SHERKATE TAVANIR
Date:  2004Volume 19
 
 
Abstract: 

TODAY’S THE TRADITIONAL STRUCTURE OF THE POWER SYSTEM ALL OVER THE WORLD HAS BEEN CHANGED. IN NEW STRUCTURE ELECTRICITY IS GOING TO BE SUPPLIED BY THE FREE MARKET. THIS WILL CAUSE THAT EVERY COMPETITORS TRY TO USE THE MAXIMUM CAPACITY OF POWER SYSTEM, WHICH HAVE A DIRECT EFFECT ON THE SYSTEM SECURITY AND STABILITY. ON THE OTHER HAND THE RECENT BLACKOUTS IN DIFFERENT PARTS OF THE WORLD HAVE DRAWN ATTENTION TO THE NETWORK STABILITY ISSUE.
VOLTAGE STABILITY MARGIN (VSM) IS AN IMPORTANT FACTOR THAT REPRESENTS THE MAXIMUM STRESS CAN BE BORE BY THE SYSTEM. IT HAS BEEN SHOWN THAT REACTIVE POWER AND INTERRUPTIBLE LOADS HAVE A SIGNIFICANT EFFECT ON IMPROVING THIS INDICATOR. IN THIS PAPER WE USED VSM AS A MAIN CONSTRAIN IN THE PROPOSED OPTIMAL POWER FLOW EQUATION. THE AMOUNTS OF REACTIVE POWER FROM INDEPENDENT RESOURCES AS WELL AS INTERRUPTIBLE LOADS ARE ASSUMED TO BE DECISION MAKING VARIABLES IN OUR PROGRAMMING, HENCE WE STUDY DIFFERENT STRATEGIES THAT INDEPENDENT SYSTEM OPERATOR CAN BE SELECTED TO INCREASE VSM AND INVESTIGATE THE IMPACT OF DISTINCTIVE DECISIONS ON THE PRICE OF USED ANCILLARY SERVICES.
COST AND VOLTAGE STABILITY ANALYSIS ARE INTEGRATED USING AN OPTIMAL POWER FLOW FORMULATION WHICH IS SOLVED USING PARTICLE SWARM OPTIMIZATION ALGORITHM. THE PROPOSED METHODOLOGY IS TESTED ON THE IEEE 14- BUS SYSTEM.

 
Keyword(s): RESTRUCTURED POWER SYSTEM, VOLTAGE STABILITY, OPF, INTERRUPTIBLE LOADS
 
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