Limits the Time Relay Coordination of Photovoltaic Power System using ETAP

Abed, Mohammed Jawad; Mhalla, Anis; Shalash, Nadheer A.

doi:10.1109/sta56120.2022.10019209

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…By connecting new photovoltaic power plants, power flows changes, leading to an increase in short-circuit currents. The short-circuit current of photovoltaic sources (Iks) is 10% higher than the rated current, and due to the large number of photovoltaic power plants, there is a significant contribution to the short-circuit current [8][9][10]. With a significant contribution to the shortcircuit current, all photovoltaic power plants with a 50 kW or higher capacity must meet grid connection requirements.…”

Section: Introductionmentioning

confidence: 99%

Protection Coordination of Photovoltaic Power Plant in the Time Domain

Čolak,

Nikolovski,

Kljajić

et al. 2024

adeletters

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The safety of workers and equipment in the power grid requires the shutdown of power plants in case of maintenance or malfunction. The shutdown relies on protective devices that must be properly coordinated to isolate only the part of the grid affected by the malfunction. Using the DIgSILENT PowerFactory software, an analysis was conducted on a model of an accurate real grid integrating a photovoltaic power plant with a capacity of 390 kW. Protection coordination testing was carried out for three-phase, two-phase, and single-phase short circuit currents at arbitrarily selected locations at medium and low voltage levels. Protection in the time domain is coordinated on lines and busbars to determine the speed and selectivity of protective devices. The analysis results indicate that adequately adjusting the three-phase short circuit at the main transformer output 110/10 kV with an impedance of 0 Ω and an allowed protection operation time of up to two seconds can be correctly addressed within 36.7 ms.

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Section: Introductionmentioning

confidence: 99%