Analysis of load electricity consumption on a low-voltage distribution system with community energy storages

摘要

Distributed and controllable energy storages are commonly used to provide specific benefits to help the operation of electric power networks. The major benefits may include peak load reduction, renewable energy intermittent problem mitigation, as an emergency/stand by power supply, and provide auxiliary services to networks etc. Recently, more and more homeowners install various sizes of solar power systems to generate clean, low emission, and free electricity for their own homes; meanwhile, the “community solar” may thus formed in a certain of electric power area. To raise the utilization of solar power and to well manage the power generation and load demand in these areas, community energy storage has been considered as a feasible solution. In this work, a low-voltage residential electric network that integrates solar power generation and community energy storage is investigated, and analysis of load electricity consumption under different scenarios and voltage fluctuation problems are discussed by OpenDSS time-series simulation. Finally, the benefit on electricity-saving of the studied system can be presented.