Hybrid power management system and method for unmanned remote cell sites

摘要

A method is disclosed for managing power at an unmanned remote cell site having at least one battery and at least one generator. The method includes the steps of determining whether there is a commercial power outage at the remote cell site and determining whether site temperature at the remote cell site and battery charge of the at least one battery at the remote cell site meet predetermined limits for battery discharging. Discharge of the at least one battery is automatically initiated to power the remote cell site if there is a commercial power outage and the site temperature and the battery charge both meet the predetermined limits for battery discharging. Operation of the at least one generator is automatically initiated to power the remote cell site if there is a commercial power outage and the site temperature and the battery charge do not both meet predetermined limits for battery discharging. Power load is transferred from the at least one generator to the at least one battery whenever the site temperature meets the predetermined limits and the battery charge is at full charge. Load is transferred back to commercial power when commercial power is restored.

主权项

1. A method for managing power at an unmanned remote site having at least one battery and at least one generator, said method comprising the steps of:
determining whether site temperature at the remote site meets a predetermined upper limit for initiating battery discharging; determining whether battery charge of the at least one battery at the remote site meets a predetermined lower limit for initiating battery discharging; initiating discharge of the at least one battery to power the remote site if commercial power is unavailable at the remote site, the site temperature is below the predetermined upper limit for initiating battery discharging, and the battery charge is above the predetermined lower limit for initiating battery discharging; initiating operation of the at least one generator to power the remote site if commercial power is unavailable at the remote site and at least one of the site temperature is not below the predetermined upper limit for battery discharging and the battery charge is not above the predetermined lower limit for initiating battery discharging; transferring load from the at least one generator to the at least one battery to power the remote site if the at least one generator is operating, the site temperature is below the predetermined upper limit, and the battery charge is at full charge; and transferring load to commercial power if commercial power becomes available at the remote site when one of the at least one battery and the at least one generator is powering the remote site.