Giới thiệu hệ thống quang điện.

Giới thiệu hệ thống quang điện.

Introducing Photovoltaic Systems S u b mi tted to D r.O s a ma Ay a d i GENERAL INTRODUCTION DESIGN ELEMENTS CASE STUDY: FLAT ROOF SYSTEM INSTALLATION COMMISSIONING MAINTENANCE The government has issued the Renewable Energy and Energy Efficiency law in April 2012 The government has raised the tariff values since 2013, hence PV Systems have become more feasible than ever  A maximum irradiance of 1,000 W/m2 of direct sunlight can reach the earth when it is:  Normal to the earth’s surface  At sea level  On a clear day Yearly average sum of global radiation  1st practical PV modules were developed in 1954 by Bell labs  There are two types of PV systems:  Off-grid  On-grid  Off-grid PV systems are independent from the electricity grid They use batteries to store energy for later use or directly for pumping  On-grid PV systems are connected to the electricity grid  Basic Components of Off-Grid PV Systems 10 GENERAL INTRODUCTION www.marji.jo DESIGN ELEMENTS CASE STUDY: FREE FIELD SYSTEM INSTALLATION COMMISSIONING MAINTENANCE 66  Installation 67  Installation 68  Installation 69  Testing & Commissioning  Electrical Tests:           Open Circuit Voltage Measurement Short Circuit Current Measurement Reverse Polarity Test Insulation Test Continuity Test Earth Resistance Test AC/DC Power Measurement Power Factor Measurement THD Measurement Commissioning 70  Operation & Maintenance  Plant Owner Responsibilities:  Daily Check for Inverter Errors  Daily Circuit Breaker Check  Daily Yield Check  Cleaning the Array Every Weeks 71 Online System Monitoring 72 Monitoring for a PV System on 15/5/2015 73 Monitoring for a PV System on 14/5/2015 74 75 Irradiance Sensor 76 Irradiance Sensor 77 Temperature Sensors 78 PV Systems Must Be Mainly Evaluated Based on their ACTUAL YIELD on the Field 79 Thank You for your Attention Any Questions? 80