A new PMU placement algorithm to meet a specified synchrophasor availability

摘要

As real-time monitoring and control are entering to smarten power grids, imposing data availability criterion on PMU placement into an existing (or a new) measurement network becomes ever more important. This criterion decreases the probability of a wrong action. Synchrophasor availability (SA) at a bus measures the fraction of time in the long run when its PMU output data are correct and accessible. The SA-based placement goal is to meet a prescribed SA profile across the power system with a minimum number of PMUs. This paper reports two new developments in the SA-based PMU placement. (1) Consideration of equipment faults, in addition to data communication interruptions. (2) An efficient iterative linear program is developed to solve the problem, and the solutions always meets the full static observability. The solution is demonstrated through PMU placement in several IEEE test systems under a variety of SA specifications and random event rates.