Photovoltaic Power Systems -2 Grid connected PV - Curtin University

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Anti islanding methods Inverters are required to have measures to protect against this occurring – Passive methods • Under/Over voltage • Under/Over Frequency – Active Methods • Frequency drift • Impedance measurement • <strong>Power</strong> Shifting
Earth Leakage Current In the US, the National Electrical Code, NEC, requires all <strong>PV</strong> installations with system voltages above 50 V DC to be earthed. Ground fault protection ('GFP') devices are used to measure the earth leakage current, in order to disconnect from the ground (that is, unearth the installation), in the case of fault. Stray leakage currents may be an issue in the sensitivity of this protection.
Page 1 and 2: Photovoltaic Power Systems -2 Grid
Page 3 and 4: Grid Connect PV Systems Net Meteri
Page 5 and 6: PV PANELS SPECIFICATION (NOMINAL VA
Page 7 and 8: Connecting Solar Panels Series conn
Page 9: Array of sub arrays
Page 12 and 13: Cable Sizing Size for volt drop - M
Page 14 and 15: Australian Requirement Breaker trip
Page 16 and 17: Components cont. Blocking diodes -
Page 18 and 19: GRID CONNECTED INVERTER SYSTEM Con
Page 20 and 21: PV/Grid Energy System Inverter Conf
Page 22 and 23: Kalbarri PV System in Western Austr
Page 24 and 25: Grid-Connected PV Inverter (String
Page 26 and 27: Grid-Connected PV System with Back
Page 28 and 29: DC Linked Lboost S1 3 String #1 HFT
Page 30 and 31: Inverter characteristics Efficiency
Page 32 and 33: DC-AC ELECTRICAL CONVERSION EFFICIE
Page 34 and 35: Experimental inverter efficiencies
Page 36 and 37: MAXIMUM POWER POINT TRACKING EFFICI
Page 38 and 39: Power Factor Traditionally poor due
Page 40 and 41: DC Injection Is possible if an outp
Page 42 and 43: Frequency Control Locked to the gri
Page 46 and 47: Fault currents Battery-less systems
Page 48 and 49: Mismatch in Arrays
Page 50 and 51: Mismatch in Arrays
Page 52 and 53: System design 6. Check ampere capac
Page 54 and 55: Case Study : A PV grid connected sy
Page 57 and 58: Calculate annual energy output Use
Page 59 and 60: System Acceptance Test 1. Sum total
Page 61 and 62: Power generating from Grid Connecte
Page 63 and 64: Tracking Array The PV array may eit
Page 65 and 66: Power Energy from Power of the Sun
Page 67 and 68: Irradiance S (W/sqm) Solar Irradian
Page 69 and 70: Calculate annual energy output Use
Page 71: Suboptimal orientation - the impact

Photovoltaic Power Systems -2 Grid connected PV - Curtin University

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