MISO, the regional transmission organization responsible for maintaining reliable transmission of power in 15 states and the Canadian province of Manitoba, recently became one of the first grid operators in North America to use new synchrophasor technology for real-time system monitoring and analysis. This is a major milestone in furthering the U.S. Department of Energy's goal of revitalizing the nation's electric grid through the use of sophisticated, innovative monitoring devices, a critical element of building a smarter grid. Synchrophasor technologies are now using phasor measurement units (PMUs) to collect data from more than 344 MISO installed devices, 30 times per second. In comparison, traditional technology records measurements every four seconds. The data is GPS time-stamped, enabling measurements from different locations to be time-synchronized and combined to create a detailed, comprehensive wide-area assessment of system conditions. With this data, MISO can better detect, diagnose and prevent system disruptions; in effect, it can create a smarter grid.
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