Area control and frequency responsive reserve generation

Area control and frequency responsive reserve (generation) 

Transmission system stability is required in order to keep all components on a transmission line in synchronization with each other and thus prevent system collapse [11]. Requirements are 1-100 MVA for 60-6000 ms, about 100 times per year. 

Transmission facility deferral refers to the ability of a utility to postpone installation of new transmission lines and transformers by supplementing the existing facilities with another resource [11], e.g., a BESS. In this application, BESSs function as fast-response sources of generation at selected locations. The requirements of the energy-storage are 0.1-1 MW for about 100 min, perhaps 100 times per year. 

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