magistrsko delo
Stefan Najdovski (Author), Boštjan Polajžer (Mentor), Gorazd Hrovat (Co-mentor)

Abstract

Magistrska naloga analizira hipotetičen dogodek N-2, tj. izpad dvosistemskega 400-kV daljnovoda Maribor–Kainachtal, ki bi kritično povečal obremenitev obravnavanega 220-kV daljnovoda Podlog–Obersielach. Posledično bi delovala distančna zaščita 220-kV daljnovoda v tretji ali četrti coni. Z namenom preprečevanja delovanja zaščite je raziskava usmerjena v vpeljavo modularnega statičnega sinhronskega serijskega kompenzatorja (m SSSC) na obravnavanem 220-kV daljnovodu. Naprava m-SSSC je namreč tovrstne nepotrebne izklope zmožna preprečiti z aktivacijo funkcije hitrega omejevanja toka. Raziskovalni proces je vključeval modeliranje omrežja, simulacijo dogodka N-2, parametriziranje in analizo odzivov dinamičnega modela naprave m-SSSC ter preizkušanje distančne zaščite v zaprti zanki in realnem času z digitalnim simulatorjem NovaCor. Rezultati simulacij delovanja naprave m-SSSC potrjujejo, da predlagane nastavitve funkcije za hitro omejevanje toka omogočajo hitre in stabilne odzive. Poleg tega rezultati preizkušanja dveh zaščitnih relejev Siemens Siprotec 7SD5 kažejo, da naprava m-SSSC pri obravnavanem dogodku N-2 za smer pretoka Obersielach–Podlog preprečuje nepotrebno delovanje distančne zaščite

Keywords

statični sinhronski serijski kompenzator;preobremenitev daljnovoda;distančna zaščita;digitalni simulator v realnem času;preizkušanje opreme v zaprti zanki;magistrske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UM FERI - Faculty of Electrical Engineering and Computer Science
Publisher: [S. Najdovski]
UDC: 621.316.915.45(043.2)
COBISS: 236166659 Link will open in a new window
Views: 0
Downloads: 19
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Fast current override with an m-sssc device and testing distance protection backup zones using a real time digital simulator
Secondary abstract: This master's thesis analyzes a hypothetical N-2 event, i.e. a disconnection of the two system 400 kV transmission line Maribor-Kainachtal that would critically increase the loading of the considered 220 kV transmission line Podlog-Obersielach. As a result, the distance protection of the 220 kV line would operate in the third or fourth zone. To prevent protection from tripping, the research is focused on the implementation of a modular static synchronous series compensator (m-SSSC) on the discussed 220 kV transmission line. The m-SSSC device can prevent such unnecessary outages by activating the current control override (CCO) function. The research process involved grid modeling, an N-2 event simulation, parameterization, and analysis of the m-SSSC dynamic model responses, as well as distance protection closed-loop testing using a NovaCor real-time digital simulator. The results of the simulations of m-SSSC device operation confirm that the proposed settings for CCO enable fast and stable responses. Furthermore, the results of testing two Siemens Siprotec 7SD5 protection relays show that the m-SSSC device prevents the unnecessary operation of distance protection for the Obersielach-Podlog flow direction during an N-2 event.
Secondary keywords: static synchronous series compensator;transmission line overload;distance protection;real-time digital simulator;hardware-in-the-loop testing;
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za elektrotehniko, računalništvo in informatiko, Elektrotehnika
Pages: 1 spletni vir (1 datoteka PDF (XXI, 72 str.))
ID: 26153387