Ivica Pavić

University of Zagreb

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Božidar Filipović-Grčić

University of Zagreb

Ivo Uglešić

University of Zagreb

Ivana Damjanović

University of Zagreb

Zdravko Hebel

University of Zagreb

Marko Delimar

University of Zagreb

Viktor Milardić

University of Zagreb

Domagoj Peharda

University of Zagreb

DŠ

Dina Šimunić

University of Zagreb

Jakša Mišković

University of Split

Frano Tomašević

University of Zagreb

Cooperative Institutions

Artificial Intelligence in Medicine (Canada)

106

Software (Spain)

105

Bridge University

104

University of Zagreb

University of Split

Faculty of Electrical Engineering and Computing in Zagreb

Algebra University College

University of Rijeka

University of Osijek

Bavarian Research Institute for Digital Transformation

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PRENAPONSKA ZAŠTITA OBJEKATA SPOJENIH NA NADZEMNU NISKONAPONSKU MREŽU

Viktor Milardić Ivo Uglešić Ivica Pavić

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SURGE PROTECTION OF BUILDINGS CONNECTED TO AN OVERHEAD LOW-VOLTAGE NETWORK

Viktor Milardić Ivo Uglešić Ivica Pavić

U prenaponskoj zastiti na niskom naponu postoje tri klase uređaja prenaponske zastite. Razvijena metoda može se koristiti pri donosenju odluke koje klase treba biti uređaj prenaponske zastite koji se postavlja u prikljucni mjerni ormaric objekta. Metoda je testirana na jednoj tipicnoj nadzemnoj niskonaponskoj mreži u Hrvatskoj. S obzirom na dobro iskustvo s uređajima prenaponske zastite klase II u transformatorskim stanicama u toj mreži, može se zakljuciti da je uređaj prenaponske zastite klase II sasvim primjeren i za objekte spojene na niskonaponsku mrežu.

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Supranational Innovation and Standards Circles

Springer eBooks (2020)

Dina Šimunić Ivica Pavić

Position (finance)

10.1007/978-3-030-44417-4_7

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Innovation and Technical Standardization Documents

Springer eBooks (2020)

Dina Šimunić Ivica Pavić

Technical standard

Open standard

10.1007/978-3-030-44417-4_4

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Analiza elektroenergetskih mreža

Zdravko Hebel Srdjan Babić Ivica Pavić Boris Kajganić Atila Barta

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Short circuit currents computation according to the IEC 60909

Srete Nikolovski Ivica Pavić

Jedan od osnovnih proracuna za analizu rada sustava u uvjetima kvara je proracun kratkog spoja. Primjena kod dimenzioniranje opreme, podesenje relejne zastite, dimenzioniranje uzemljivaca, određivanje elektromagnetskog utjecaja na ostale objekte. Podjela kvarova na poprecne i uzdužne, jednostruke i visestruke. Nacin uzemljenja sustava: - kratki spoj (kruto uzemljenje ili preko impedancije) - zemljospoj (dozemni spoj). Tok proracuna struje kratkog spoja obradit ce se standardom IEC 60909 (EN 60909), koji se može primijeniti u zamkastim i u zrakastim mrežama. Metoda opisana u standardu bazira na Thevenin-ovom teoremu, te na mjestu kratkog spoja pretpostavlja nadomjesni izvor, pomocu kojeg se može odrediti struja kratkog spoja. Impedancije mrežnih elemenata mogu se izrazit apsolutnim ili relativnim vrijednostima.Za matematicko modeliranje nesimetricnih kratkih spojeva koristi se metoda simetricnih komponenata, koja ce se a u svrhu uniformnosti matematickog postupka primijeniti i u slucaju simetricnog, trofaznog kratkog spoja. Pri proracunu struje kratkog spoja usvajaju se slijedece pretpostavke: - zanemaruju se struje opterecenja mreže, - ne uzima se u obzir impedancija luka na mjestu kratkog spoja, - za vrijeme trajanja tropolnog kratkog spoja struja kratkog spoja nastupa istovremeno u sve tri faze.

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KUTNA REGULACIJA NA TRANSFORMATORU 400/220 kV U TS KONJSKO

Zdravko Hebel Ivica Pavić Zorko Cvetković

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Substation reconfiguration selection algorithm based on PTDFs for congestion management and RL approach

Expert Systems with Applications (2024)

Ivana Hrgović Ivica Pavić

Control reconfiguration

Power transmission

10.1016/j.eswa.2024.125017

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Application of artificial neural networks for external network equivalent modeling

Journal of Energy - Energija (2022)

Ivica Pavić Frano Tomašević Ivana Damjanović

In this paper an artificial neural network (ANN) based methodology is proposed for determining an external network equivalent. The modified Newton-Raphson method with constant interchange of total active power between internal and external system is used for solving the load flow problem. A multilayer perceptron (MLP) with backpropagation training algorithm is applied for external network determination. The proposed methodology was tested with the IEEE 24-bus test network and simulation results show a very good performance of the ANN for external network modeling.

Backpropagation

Multilayer perceptron

Perceptron

10.37798/2015641-4156

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Development of the international standards for hydrographic surveys

Ivica Pavić

This article presents the standards for hydrographic survey developed by the International Hydrographic Organization. Hydrographic activity has a distinct international character because the products of hydrographic organizations are designed to use in international maritime transport. For this reason, any information on nautical charts and publications must have the required level of accuracy and reliability. Therefore, it was necessary at the global level to develop appropriate regulations and standards which will regulate the international hydrographic activity in the field of hydrographic survey.

Hydrographic survey

Nautical chart

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