Analysis on TD-LTE wireless private network capacity meeting the interaction demand of future smart grid

Along with the usage of green energy, electricity, and the advanced innovation of energy, new power services will grow explosively, such as distributed photovoltaic, electric vehicle charging pile and so on. As a result, the interaction mode ‘source-net-load–storage’ will change. Aiming to promote the power grid operation and service level, it is required to improve the ability of distribution network control and awareness, especially the ability of real-time operating state collection in the low voltage power grid (380 kv / 220 kv). Power wireless private network based on TD-LTE is one of the most important technologies to realize the power terminal access and data collection which can solve the ‘last mile’ problem of terminal access. However, the wireless communication capacity is limited by the bandwidth, frequency, technology, etc. In this paper, we analyze the requirements of power grid basic services for TD-LTE wireless private network. And the basic services include power utilization information collection, distribution automation, distributed photovoltaic and electric vehicle charging pile. The conclusion of this paper has an important guiding significance to power wireless private network planning and construction.