Typical Design of Residential Distributed Photovoltaic Projects

This document, issued by Huaneng New Energy Co., Ltd., provides a typical design for residential distributed photovoltaic power projects. It covers general provisions including purpose, design basis, scope, and scheme descriptions. The overview details project site selection, safety requirements, structural design, equipment selection for photovoltaic modules and grid-connected inverters, electrical design including array and main connection, cable, lightning protection, grounding, grid connection, and monitoring systems. Construction techniques for welding, waterproofing, and installation are specified. Two typical design schemes are presented: flat roof to sloped roof (JG-PA) and sunroom/high support (JG-PC/JG-PD), each with applicable conditions, descriptions, and examples. The standard aims to standardize design practices for residential distributed photovoltaic systems, ensuring safety, efficiency, and reliability.