A smart grid is an electrical grid that uses information and communications technology to gather and act on information providing intelligence to any electrical grid. It consists of a system of very precise measurements of power system voltages and currents.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/smart-grid-transmission-wams-applications-urtdsm-project-powergrid
[2] http://admin.indiaenvironmentportal.org.in/category/author/n-s-sodha
[3] http://admin.indiaenvironmentportal.org.in/category/journal/water-energy-international
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/power-industry
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/technology
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-efficiency
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/power-transmission