UEERE0061 - Design grid-connected photovoltaic power supply systems

Students will also be expected to demonstrate the following knowledge:

• solar resource including:

• peak sun hours, irradiance, irradiation, latitude, azimuth and altitude angles, tilt angle
• interpretation of solar irradiation data
• how irradiation varies throughout the year on the surface of a fixed collector
• factors affecting the optimal tilt and orientation of PV arrays
• effect on solar resource of tracking

• PV modules, including:

• cell, module, array
• types, efficiencies and their typical applications
• mechanical and electrical features necessary for the long life of a PV module

• module characteristics including:

• I-V curve, operating point, MPP, power and voltage temperature co-efficient, Standard Test Conditions (STC), nominal operating cell temperature (NOCT)
• major ratings of a PV module from manufacturer’s information or nameplate data
• configuration of a typical PV array
• the effect of partial shading of a PV module or array

• relevant industry standard requirements for installation of grid-connected PCE
• verification of site survey data and application in design
• PV arrays selection including:

• selection and sizing of PV array for a grid-connected power conversion equipment (PCE), based on energy demand, budget constraints, architectural - constraints or limitations on available PCE sizes
• determining the minimum and maximum number of PV modules in a string for the specified voltage

• system components selection including:

• balance of the system components, including cabling and wiring systems, circuit protection and isolation equipment for a grid-connected PV system
• schematic diagrams of common grid-connected PCE circuit configurations, including metering arrangements, isolation and connection with respect to residual circuit devices (RCDs)

• other design considerations including:

• energy yield, specific energy yield
• calculation of incentives
• regulatory and legal obligations

• PCEs including:

• types of PCEs used in grid connected systems
• the basic function of PCEs
• PCE operation
• PCE characteristics

• PV grid-connected system operation including operation of grid interactive safety requirements
• grid-connected PCE selection including:

• operating window of the PCE for the expected minimum and maximum effective cell temperatures
• selection of an PCE rating with respect to the output power of the array/s

• major installation requirements for all system components which will ensure correct operation, long life, safety and ease of maintenance consistent with industry standards and relevant WHS/OHS guidelines
• selection of a suitable location for the PV array, PCE and other components, at a given installation site
• typical installation configurations for grid connection of PV systems via power conversion equipment
• installation requirements for a grid connected system
• labelling and signage requirements
• relevant manufacturer specifications
• relevant risk mitigation processes
• relevant WHS/OHS legislated requirements
• relevant workplace documentation
• relevant workplace policies and procedures.