STUDY OF POWER QUALITY IN MICROGRID BASED ON SOLAR/MICRO-HYDRO/WIND POWER PLANT FOR ISOLATED AREA
Global population growth is increasing from year to year. It also impacts increasing energy consumption, including in the power generation sector. Power plants are mostly still based on fossil energy and produce ever-increasing greenhouse gas emissions. The commitment of each country in the Paris...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/63550 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Global population growth is increasing from year to year. It also impacts
increasing energy consumption, including in the power generation sector. Power
plants are mostly still based on fossil energy and produce ever-increasing
greenhouse gas emissions. The commitment of each country in the Paris Agreement
to encourage the use of power plants based on renewable energy to produce cleaner
and more environmentally friendly energy, including Indonesia. Yet renewable
energy generation faces challenges such as the seasonal and intermittent nature of
renewable energy, which has the potential to yield power quality problems.
Furthermore, the increasing application of power electronics loads on the
consumer side and power electronics on the source side of renewable energy
generation lead to serious problems of harmonics in the power system.
The aim of this research especially studies the power quality aspect of the microgrid
sourced from three types of renewable energy sources for the isolated area, i.e.,
solar PV, micro-hydro, and wind energy plant. Passive filters LC and LCL are
applied to the solar PV and wind energy systems, respectively, to reduce harmonics
appearing from power electronics. The battery system is applied to the solar power
plant to compensate for the voltage fluctuations generated from renewable energy
power plants. The microgrid system utilized as a case study is based on the
development of an off-grid power system in Teluk Sumbang Village, East
Kalimantan, Indonesia, which is sourced from a 414 kWp solar PV plant, 30 kW
micro-hydro plant, and 550 kWh battery system. The method to analyze power
quality is using the MATLAB/Simulink environment. Analysis of the Total
Harmonic Distortion (THD) index is carried out through Fast Fourier Transform
(FFT). Furthermore, transient overvoltage phenomenon is observed using
simulation of three-phase ground faults. The overall results of the power quality
analysis are compared with the IEEE and IEC standards. |
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