Energy Storage for Power Systems with Rapidly Changing Loads

In areas with rapidly changing loads of large magnitude, utility companies often experience large deviations in frequency and area control error. Inadvertent tie-line power flow also occurs. The purpose of this research is to examine the effects a large scale energy storage device has on the system response to a rapidly changing load. Two control areas connected by a tie-line are modelled and simulations are performed to determine the response to a step change in load and also to a five-stand rolling mill load. For each type of load, three cases are studied: no energy storage in the system, a superconducting magnetic energy storage device in the system, and a battery energy storage device in the system. Each case is analyzed and the improvements in system operation for each of the energy storage devices is discussed. CHAPTER

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