UEERE0016 - Install, configure and commission LV grid-connected photovoltaic power systems

Unit code: UEERE0016 | Study level: TAFE

Nominal hours:

Location

Sunshine

Prerequisites

UEERE0022 - Solve basic problems in photovoltaic energy apparatus and systems

UEEEL0012 - Install low voltage wiring, appliances, switchgear and associated accessories

(Or equivalent to be determined by unit coordinator)

Overview

This unit involves the skills and knowledge required to install and commission a low voltage (LV) photovoltaic (PV) power system to the grid power system.
It includes working safely and to industry installation standards, matching PV components specified for a given location, placing and securing system components accurately, making required circuit connections and completing the necessary installation documentation.
The skills and knowledge described in this unit require a licence or permit to practice in the workplace where work is carried out on electrical installations which are designed to operate at voltages greater than 50 volt (V) alternating current (a.c.) or 120 V direct current (d.c.).
Competency development activities in this unit are subject to regulations directly related to licensing. Where a licence or permit to practice is not held, a relevant contract of training, such as an Australian Apprenticeship, is required.Additional and/or other conditions may apply in some jurisdictions subject to regulations related to electrical work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations.

Assessment

For Melbourne campuses

Assessment tasks will be designed to reinforce & extend knowledge and skill competence within set & controlled parameters in accordance with each unit’s learning outcomes & performance criteria requirements, incl the setting of work based practical application tasks designed to provide evidence of competence outcomes, within periodic and scheduled timelines.

Students will be expected to demonstrate the following required skills:
*applying relevant WHS/ OHS requirements
*dealing with unplanned events/situations in accordance with workplace procedures
*installing & setting up grid-connected PV system
*tilting & adjusting angle of roof mounted & free-standing PV array frame construction
*connecting & commissioning one PV product.

Students will also be expected to demonstrate the following knowledge:
*PV array installation requirements, incl:

WHS/OHS requirements & methods working on roofs
common methods of roof construction & methods to ensure integrity of waterproofing
common types of roof mounted & free-standing PV array frame construction & methods of tilt angle adjustment
fixing methods
array mounting methods
aesthetic considerations in choosing an array location & type of mounting
mounting & fixing methods for commercially available building integrated PV product
*electrical PV array installation requirements, incl:
considerations involved in wiring of series connected PV modules
PV array wiring diagram incl placement of blocking & bypass diodes
considerations involved in choosing location of associated system equipment
cable route from PV array/s to inverters

installation & maintenance incl:

installation work on a PV power system - correct isolation & shutdown procedures
routine maintenance tasks on PV arrays
required vegetation control to remove or reduce shading or soiling on a PV array
*inverters, incl:
types of inverters used in grid-connected systems
industry standard symbol for LV inverter
function inverter
block diagram of inverter
*inverter operation, incl:
principle of operation of a single phase inverter
operation of a field effect transistor inverter, an inverter bridge & half-bridge configuration
connection of a grid inverter & measurement of inverter parameters for various loads
*inverter characteristics, incl:
distinguish inverters suitable for grid-connected PV array application from standard inverters
using waveform diagrams, function of pulse width modulator techniques in square wave, modified square wave & synthesised sine wave inverters
output voltage waveforms for square wave, modified square wave & synthesised sine wave inverters showing typical voltages & periodic times
6 inverter specifications
*PV grid-connected system operation, incl:
block diagram
operation of grid interactive PV systems
diagrams of grid-connected inverter circuit configurations
installation of grid-connected inverters, incl:
installation requirements for all system components; configurations
installation configurations for grid connection of energy systems
operation of grid protection device
array wiring plan for series connected modules to minimise power loss due to shading
installation requirements & installation of a grid-connected system
*system commissioning & maintenance, incl:
procedures required for grid-connected inverters
commissioning procedures
maintenance for a grid-connected PV system
testing & rectification of grid-connected inverter system

Required reading

The qualified trainer and assessor will provide teaching and learning materials as required in the form of workbooks produced by the Polytechnic and/or via the Polytechnic e-learning system.