Photovoltaic, energy storage, direct current, flexible (PEDF) is a new type of building power distribution system to build a carbon neutral target, which is an important technical method to achieve the carbon neutral target in China. The research frontier analysis of the PEDF technology application park is conducted through CiteSpace social network analysis, the research hotspots and characteristics of this technology are analyzed, and the technical atlas and development direction of the PEDF technology is summarized through literature review, laying a theoretical and technical foundation for analysing the application of the PEDF technology in the smart park. Then, taking the construction of the Star of Optical Valley Smart Park as a representative case, the practical technology and existing problems of the application of PEDF in the planning of the smart park are introduced. According to the literature review and practice, the whole process application framework of PEDF in smart park based on five major built environment systems is proposed.It is suggested that the energy of the PEDF technology should be used as the supplementary energy of the park, which is mainly used in four scenarios: mobile energy consumption scenario, municipal utilities energy consumption scenario, supporting public buildings energy consumption scenario, and industrial buildings supplementary energy scenario. The technology of PEDF is an important way to realize the low-carbon intelligent development of the industrial park. In the future, it will conduct in-depth research and exploration in the whole process integration technology, intelligent control technology, expanding the application from architecture to a more macro level, and integrating the "dual carbon" goal into the early planning and design.