Investigation of NEM solar PV power intergration onto central grid in Malaysia

Mohamad, Hasif (2022) Investigation of NEM solar PV power intergration onto central grid in Malaysia. Project Report. Melaka, Malaysia, Universiti Teknikal Malaysia Melaka. (Submitted)

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Abstract

Installation of solar PV system in Malaysia is at all-time high due to exponential cost reduction and government backing of solar PV generation through scheme as FiT, NEM, and SELCO which drive solar PV growth in generation mix. This research was aimed to investigate and analyze the effects of grid connected solar PV generation on frequency fluctuations, voltage fluctuation, THDV and voltage flickers, in parallels with studying protections applied in ensuring negatives impacts from grid connected solar PV is negated. Mix methods methodology which encompass site visits, field interviews, parameters measurement on sites using PQA, data analysis using statistical methods consisting Pearson correlation analysis, process capability analysis and descriptive analysis, simulations of solar PV systems using PVSYT, and comparing results through standards of ESAH, MGC and NEM Guidelines was done in order to accomplish the objective of the research. The results found out that solar PV system installed was in compliance with protections standards outline by authorities and utilities providers such as ST, SEDA and TNB. The impact of grid connected solar PV to the grid power quality and stability was minimal. From the analysis, the correlation between power generated by solar PV to PQ could be determine. However, loads dynamics had more directs impacts to the grid stability compared to solar PV systems In conclusion, a solar PV system with all the protection and mitigation requirement was in placed in accordance to the standards outlined, the solar PV output PQ was controlled in precise, accurate and within specification manner. Hence, providing minimum impact to the system frequency fluctuations, voltage fluctuation, THDV and voltage flickers compared to loads demand dynamics.

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