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TABLE 4 % GENERATION GAIN OF HSAT W.R.T FIXED TILT From the Table 4, it is observed that there are months which shall have % gain more than 30%.The maximum % gain is observed in the month of May for all locations. Also average value for whole year falls within a range of 16-19%. Hence it is clearly evident that HSAT assures high generation gain in the listed states of India w.r.t fixed tilt solar power plant. Therefore, it can help to maximize the returns fast. The graphical comparison of Performance ratio (PR) for all the considered locations are given below, Performance ratio is calculated considering operating conditions such as plant availability, grid availability, module degradation, shading loss, soiling loss, DC & AC cable loss, inverter & Transformer efficiency, etc. It can be seen from Fig4 that PR of fixed tilt plant is greater than that of HSAT tracker plant. This is due to lesser temperature loss, DC cable loss, auxiliary consumption& plant availability (i.e., superior in performance) than HSAT as shown in Table5. On an annual average, PR for fixed tilt w.r.t HSAT is high by 0.5-1.5% whereas the range of % generation gain of HSAT in comparison to fixed tilt is 16-19% due to much higher radiation on tilt plane. Conclusion From the above analysis for 8 locations in southern states of India, it can be concluded that • HSAT tracker plant produces more energy yield when compared to fixed tilt plant throughout the year. Annually, on an average HSAT plant would generate minimum 17 % more than that of fixed tilt plant • HSAT Tracker performs more than 10% w.r.t fixed tilt for minimum of 9 months over the course of a year • The Maximum % generation gain can be expected in the month of May • Annually, the performance ratio of fixed tilt plant is greater than that of HSAT whereas % generation gain of HSAT w.r.t fixed tilt is 17%(on an average ) since tracking system increases the amount of radiation utilized by the system Fig 4. Comparison of PR between HSAT & Fixed Tilt TABLE5. PERFORMANCE DIFFERENTIATORS OF HSAT W.R.T FT Performance Differentiators : HSAT Vs FT Parameter HSAT FT IAM Factor Loss Temperature Loss Irradiance Level Loss DC Cable Loss Auxiliary Consumption Soiling Loss Plant Availability Superior Relatively Inferior HSAT tracker plant produces more energy yield when compared to fixed tilt plant throughout the year. Annually, on an average HSAT plant would generate minimum 17 % more than that of fixed tilt plant SOLAR POWER 24 energetica INDIA · MAR | APR16


energetica-india-56
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