Planning for uncertainty: NYISO planning process and smart grid

To maintain the capability to reliably run the New York power systems and its electricity market, NYISO has developed a comprehensive planning process to systematically address the reliability needs and system expansion under the condition of limited rights-of-way and tight available transmission capability. Market responses to the planning process have been active, and specific technologies have been introduced utilizing ldquosmart gridrdquo controls to make full use of the transmission systems. This has included the application of conventional devices, such as phase angle regulators, as well as high voltage direct current, flexible alternating current transmission systems, and variable frequency transformer installations. The ability to control transmission flows has also promoted the development of merchant transmission ties to neighboring systems leveraging the competitive markets in the Northeast region in the US.