EFFECTS OF BATTERY STORAGE DEVICES ON POWER SYSTEM DISPATCH.

The inability to cycle large plants produces a need for energy storage devices. Currently, several projects are underway to develop batteries to provide energy storage for peak shaving and load leveling. The batteries have a fast rate of response and therefore can potentially be used to provide regulation, thus improving the area control error (ACE). This project utilized the UMC hybrid simulator to study the effects of batteries on either peak shaving or regulation or a combination of peak shaving and regulation. Battery models and rectifier inverter models were developed for the hybrid simulator. These models were added to a power system simulation with a typical generation mix. Dispatching software was designed to allow test runs using a variety of dispatching algorithms. The resulting data illustrate the value of batteries for peak shaving, regulation, and spinning reserve.