Bukit Sebukor, Melaka - mbipv project

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IEA PVPS Task 10, Activity 4.1 – 4.2 kWp (Malaysia) July 2007 iii. Cables are properly secured inside conduit. The DC cables under the PV modules are properly secured inside the conduit as reflected in the below pictures. iv. Lightning protection of the house. It was observed that the lightning protection of the house is not available. The house owner was informed and advised during the visit on 27 th June 07 (testing and commissioning was conducted together with the MBIPV <strong>project</strong>) to install the lightning protection for safety of the overall electrical system. 14. Standards, regulations, recommendations, grid connection, links & references The Malaysian Standard (MS 1837: 2005) for installation of grid-connected photovoltaic (PV) system was officially published and available from September, 2005. This standard provides guidelines on BIPV installation and electrical safety requirements. Page 10 of 11
IEA PVPS Task 10, Activity 4.1 – 4.2 kWp (Malaysia) July 2007 Annex 1: Calculation of expected annual energy yield of the system. • Array is rated at 4.2 kWp • Inverter efficiency: Solarmax 4200C is about 95% • Average daily maximum ambient temperature of 35 °C • Allow 5% for manufacturers tolerance and mismatch • Dirt derating of 3% • Total voltage drop of 2% Step 1: The derating of the PV array can be calculated by the following formula: P array = P a.stc × f mm × f temp × f dirt P a.stc = 4.2 kWp f mm = 0.95 (5%) f dirt = 0.97 (3%) f temp = 1 - (γ × (T cell.eff - T stc )) (γ is taken as 0.4%) = 1 - (0.4/100 x ((35 + 25) -25)) (T cell-eff = T a.day + 25 0 C) = 0.86 P array = P a.stc × f mm × f temp × f dirt = 4.2 x 0.95 x 0.86 x 0.97 = 3.32 kWp Step 2: The average yearly energy output of the PV array is calculated as follows: E pv = P array x H tilt P array = 3.32 kWp H tilt = 1,550 kWh/m 2 (Irradiance at Seremban, tilted at 14 degrees) E pv = P array x H tilt = 3.32 x 1,550 = 5,146 kWh per annum Step 3: The sub-system efficiency can be calculated from the following formula: η pvss = η pv-inv x η inv η pvinv = 98% (2% voltage drop) η inv = 95% η pvss = η pv-inv x η inv = 98% x 95% = 93.1% Step 4: The average yearly real energy yield of the PV system is calculated as follows: E real = E pv x η pvss = 5,146 x 0.931 = 4,790 kWh per annum = 13.1 kWh per day Page 11 of 11
Page 1 and 2: Ministry of Energy, Water & Communi
Page 3 and 4: IEA PVPS Task 10, Activity 4.1 - 4.
Page 9: IEA PVPS Task 10, Activity 4.1 - 4.

Bukit Sebukor, Melaka - mbipv project

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