GB/T 37663.3-2019 "Requirements for outdoor empirical testing of distributed photovoltaics in the humid tropical zone, Part 3: Grid-connected photovoltaic systems" specifies the requirements for outdoor empirical testing of distributed grid-connected photovoltaic systems in warm-moist climate zones. The standard includes test methods for solar energy resources, power generation efficiency, power generation operation, and grid-connected performance. Applicable to distributed photovoltaic systems connected to the grid through AC380V or AC10 (6) kV voltage levels, but excluding concentrated photovoltaic systems, large ground-based power stations, and systems in "sub-humid tropical" climate zones. The standard cites a number of relevant technical requirements and environmental conditions standards to ensure the performance Reliability of photovoltaic systems in heat and humidity environments.