Wide-area measurement system-based supervision of protection schemes with minimum number of phasor measurement units.

ABSTRACT: Cascade tripping of power lines triggered by maloperation of zone-3 relays during stressed system conditions, such as load encroachment, power swing and voltage instability, has led to many catastrophic power failures worldwide, including Indian blackouts in 2012. With the introduction of wide-area measurement systems (WAMS) into the grids, real-time monitoring of transmission network condition is possible. A phasor measurement unit (PMU) sends time-synchronized data to a phasor data concentrator, which can provide a control signal to substation devices. The latency associated with the communication system makes WAMS suitable for a slower form of protection. In this work, a method to identify the faulted line using synchronized data from strategic PMU locations is proposed. Subsequently, a

SUBMITTER: Gajare S 

PROVIDER: S-EPMC5514353 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature