Self-heating snow melting photovoltaic system of building integrated photovoltaics (BIPV) system

The invention discloses a self-heating snow-melting photovoltaic system of a building integrated photovoltaics (BIPV) system, which relates to the technical field of photovoltaic power stations and comprises a plurality of BIPV roof systems and a plurality of BIPV facade systems, and the BIPV roof systems and the BIPV facade systems are respectively and independently connected to a grid. The BIPV roof system comprises a roof photovoltaic group string formed by a plurality of photovoltaic modules arranged in an array. The BIPV facade system comprises a facade photovoltaic group string formed by a plurality of photovoltaic modules which are arranged in an array; each group of roof photovoltaic group strings is connected with n groups of facade photovoltaic group strings in parallel through a control box, a control switch C0 for controlling grid connection of the roof photovoltaic group strings and n control switches C1 to Cn for controlling conduction of each group of facade photovoltaic group strings and the r