![]() ![]() In addition to physical (measurement) standards, such as the examples listed above, there is also another type of standard known as a "documentary standard." A documentary standard is a written agreement containing technical specifications or other precise criteria that may contain rules, guidelines, or definitions of characteristics. In today's world, standards encourage innovation and competition, promote international trade, and improve the quality of life. We've become so used to accepting and using many standards that we don't realize how important they are. Finally, in 1120 AD, King Henry the First of England standardized the measurement of length by establishing the "Ell," which was equivalent to the length of his arm. With each new leader, the actual length of a cubit would change. For example, the "Royal Egyptian Cubit," one of the earliest units for measuring length, was based on the specific length of the forearm of the Pharaoh or King ruling at that time. With each system of measurement, it became useful to develop standards. From the very first civilizations, we've adopted many systems of measurement-for length (cubits, ells, inches, centimeters), distance (leagues, fathoms, miles, kilometers, light years), weight (grams, stones, pounds, tons), and calendars (Julian, Mayan, Chinese, Jewish). Human beings have long recognized the value of measurements and standards. Why do we need standards for the smart grid? Or here's an even more basic question: Why do we need standards? The Smart Grid Information Clearinghouse Want even more information? You'll find hundreds of links at this government-sponsored clearinghouse.Department of Energy (DOE), which is the lead federal agency for the smart grid, has developed this information center about electricity and the electric system. is the gateway to information on federal initiatives that support the development of the technologies, polices, and projects transforming the electric power industry.It's been called "electricity with a brain," "the energy internet," and "the electronet." A more comprehensive definition we use at NIST is "a modernized grid that enables bidirectional flows of energy and uses two-way communication and control capabilities that will lead to an array of new functionalities and applications." Unlike today's grid, which primarily delivers electricity in a one-way flow from generator to outlet, the smart grid will permit the two-way flow of both electricity and information. The smart grid is a planned nationwide network that uses information technology to deliver electricity efficiently, reliably, and securely. What is the smart grid? Before we look at the importance of standards for the smart grid, you'll want to know a bit more about the smart grid itself. ![]()
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