Algoritmi za analize slučajnih ispada elemenata elektroenergetske mreže

scientific master's theses

• Author: Nijaz Dizdarević
• Mentor: Srđan Babić (mentor)
• Committee member: Srđan Babić (član povjerenstva)
• Committee member: Zdravko Hebel (član povjerenstva)
• Committee member: Petar Javor (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Energy and Power Systems); Zagreb
• Defense date and country: 1994-02-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering; Power Engineering
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

Svrha sigurnosnih analiza elektroenergetskog sustava u stacionarnom stanju nalazi se u određivanju elemenata čiji ispadi uzrokuju narušavanje postavljenih ograničenja kao i u procjeni stupnja ozbiljnosti svakog od tih narušenja. Za veće sustave, čak i ako se
razmatraju samo jednostruki ispadi i ako se koriste brze metode rješavanja, cjelovita izmjenična analiza svih slučajeva ispada zahtjeva dugotrajan postupak koji za primjenu u realnom vremenu nije prihvatljiv. Stoga se u svrhu oblikovanja... More liste kritičnih slučajeva ispada koriste brzi i aproksimativni postupci proračuna tokova snaga pomoću kojih se unaprijed u kratkom vremenu predviđaju kritični elementi čiji ispadi uzrokuju preopterećenja ili naponske neprilike, nakon čega se cjelovita izmjenična analiza izvodi samo nad najtežim slučajevima. Oblikovanje liste ispada izvodi se automatski korištenjem metoda rangiranja prema vrijednostima indeksa ozbiljnosti učinka ispada ili korištenjem metoda ukazivanja na kritične elemente pri čemu nije nužno proračunavati vrijednosti indeksa, jer je od značenja samo utvrđivanje postojanja ili nepostojanja narušenja ograničenja. Pri izvođenju algoritama od izuzetnog su značenja matematički postupci rada s rijetko popunjenim matricama te postupci ekvivalentiranja vanjskog dijela sustava čijim korištenjem se cijeli proces ubrzava i sažima skraćujući time ukupno vrijeme izvođenja. Less

Abstract (english)

The purpose of steady-state power system security analysis is to determine which
contingencies cause component limit violations and also severity of any such violations.
For large systems, even if only single component contingencies were considered, and
even if fast solution methods were employed, full AC analysis of all cases could be
prohibitively time consuming especially in real time mode. In order to avoid this
computational burden contingency list is formed by approximate... More load flow solution
methods which in contingency selection procedure estimate in advance contingencies
more likely to cause limit Violations, following by full AC analysis only for the more severe
cases. Contingency selection procedure is automated using ranking methods according
to their performance index values or using screening methods which do not necessary
need ranking by severity, because the most important issue within these methods is to
identify cases which cause limit violations. These methods are enhanced by using sparse
matrix techniques and local solution concept involving external equivalents in field of
avoiding time consuming routines and reducing whole problem.
Keywords Less

• Keywords: Sigurnosna analiza; izbor ispada; analiza ispada
• Keywords (english): Security analysis; contingency selection; contingency analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:168:514575
• Study programme: Title: Postgraduate master programme in electrical engineering; Study programme type: university; Study level: postgraduate; Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
• Type of resource: Text
• File origin: Reformatted digital
• Access conditions: Closed access
• Created on: 2019-03-20 08:20:41