Energy storage control system and method

摘要

A system for providing power to a power network includes an energy storage device connected to the power network, a sensor connected with the energy storage device for measuring a state of the energy storage device during a rest period, which corresponds to a time span during which a current through the energy storage device is reduced to a level that enables an estimation of a state of the energy storage device. The system further includes a controller connected to the sensor for measuring a state of the energy storage device. The controller selectively establishes rest periods for the energy storage device. The rest periods are established by optimizing between minimization of disruption to normal operation and a need to update a measurement of the state of the energy storage device.

主权项

1. A computing system, comprising:
a processor and a memory storing instructions that are operable, when executed by the processor, to instruct the processor to perform a method to measure a state of an energy storage device during a rest period, wherein the energy storage device is configured to provide power over a power network, the method comprising:
establishing one or more rest periods of the energy storage device to enable an estimation of the state of the energy storage device by using a controller to maintain a reduced current across the energy storage device or by physically decoupling the energy storage device from the power network;receiving information regarding the state of the energy storage device from a sensor during the one or more rest periods, and storing the information about the state of the energy storage device during the one or more rest periods;determining a level of confidence in an accuracy of the information regarding the state of the energy storage device;determining a level of disruption to normal operation of the power network that would be caused by maintaining the reduced current across the energy storage device or by decoupling the energy storage device from the power network, wherein the level of disruption is based at least in part on an ability of an electrical power producing unit to support a load amount when maintaining the reduced current across the energy storage device or decoupling the energy storage device; anddetermining when to establish a new rest period to perform a new state measurement of the energy storage device based on both the level of confidence and the level of disruption.