Analysis of the Environment Factors and Power Quality of LV Distribution Networks for Residential Solar Power System in Yangon, Myanmar

Analysis of the Environment Factors and Power Quality of LV Distribution Networks for Residential Solar Power System in Yangon, Myanmar

최적의 태양광 발전 시스템은 환경 인자의 분석과 지역 전력 상태를 기반으로 설계될 수 있다. 환경 인지에 대한 빅데이터를 이용하여 출력에 영향을 미칠 수 있는 문제를 예측할 수 있다. 본 연구에서, 미얀마 가정용 태양광 발전시스템을 효과적으로 설계하기 위해 미얀마 양곤의 환경 인자와 저압계통 전력품질을 측정하였다. 환경 인자는 1년 동안 분마다 데이터를 수집하도록 설계된 모니터링 시스템에 의해 측정되었다. 수평/경사일사량, 대기온도 및 풍속을 포함한 환경 인자가 측정되었다. 양곤 지역의 기온은 3월부터 5월 사이에 가장 높았다. 이 기간 동안 평균 기온은 34℃였고 정오의 온도는 40℃ 이상이었다. 경사일사량은 3월 >6.0 kW·m⁻²/day로 최고치를 기록했고 우기가 시작되는 6월과 10월 사이에 <4.0 kW·m⁻²/day로 감소했다. 저압계통 전력품질은 불안정하였고 전압은 최소값에서 105Vac, 최대값에서 214Vac로 측정되었다.

The optimization of photovoltaic power system should be designed based on measuring the environmental factors and analyze the condition of electric power distribution in the region where it is to be installed. Using big data analysis on the environmental factors can solve the problems that could potentially affect power output. In this study, the environmental factors and LV grid quality in Yangon, Myanmar are measured and examined to establish whether a photovoltaic power system can be used. The environmental factors were collected specifically with the specially designed monitoring system which are gathering the environmental data every minute for one year. The monitoring system simultaneously measured environmental factors including horizontal/inclined solar irradiation, ambient temperature, and wind speed. The temperature was the highest from March to May in the Yangon region. During this period, the average temperature was 34℃ and temperature at noon was 40℃ or higher. Inclined solar irradiation reached its highest at > 6 kW·m⁻²/day in March and decreased to < 4 kW·m⁻²/day from July to October, when the rainy season began. In terms of LV grid quality, the voltage was determined to be unstable as it was 105 Vac at its minimum and 214 Vac at its maximum.