Naslov
Probabilistic risk assessment of island operation of grid connected multi-inverter power plant

Autori
Ivas, Mihovil

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
International Congress Energy and the Environment 2014: 24th Scientific Conference on Energy and the Environment / Franković, Bernard - Opatija : Hrvatska stručna udruga za sunčevu energiju, 2014, 193-202

ISBN
978-953-6886-18-0

Skup
International Congress Energy and the Environment 2014: 24th Scientific Conference on Energy and the Environment

Mjesto i datum
Opatija, Hrvatska, 22.10.2014. - 24.10.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
otočni pogon; vjerojatnosna analiza rizika; distribuirani izvori; izmjenjivač; sunčana elektrana; zaštita od otočnog pogona
(island operation; probabilstic risk analysis; distributed generation source; inverter; solar power plant; island protection)

Sažetak
Island operation of distributed generation source without possibility of regulation of the generation power, with part of local network grid, is unwanted operation situation which can happen when one of the switching devices switches out and disconnects part of local grid, including distributed generation source, from the main grid supply. Such unwanted operation situation imposes danger for personnel safety, prevents the fault arc to extinguish during automatic re-closing dead time, allows switching onto unsyncronized part of network, and reduces power quality. Typical example for distributed generation source without regulation, which requires some kind of islanding protection, are power plants composed of grid connected inverter units, like photovoltaic power plants. Standardized islanding protections are integrated within inverters. Probability of island operation depends on balance of generation power and load power, where neither one of the values is constant. Both load power and generation power are independent variables, i.e. probability functions which can be derived from long-term measurements in operation. Real example of one of the largest solar power plants in Croatia is used for risk probability assesment of island operation and to justify the need for further research of this phenomenon and for investment in additional island protection.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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