Estimating loss rates of links in smart grids

摘要

An apparatus and article of manufacture for estimating loss rates of links in a smart grid include identifying end-to-end passage rates from a source to each of multiple receiver and/or load meters in a smart grid, and estimating a loss in at least one link of the grid by identifying the sparsest solution of link loss rates that matches the end-to-end passage rates. Also, a system includes a memory, a processor coupled thereto, and software modules executing on the processor, including a monitoring module for monitoring power flow of receiver and/or load meters in a smart grid, a measurement collector module for collecting measurements to compute end-to-end passage rates from a source to each receiver and/or load meter, and a processing module for estimating a loss in a link of the grid by identifying the sparsest solution of link loss rates matching the end-to-end passage rates.

主权项

1. An article of manufacture comprising a computer readable storage memory having computer readable instructions tangibly embodied thereon which, when implemented, cause a computer to carry out a plurality of method steps comprising:
identifying an end-to-end passage rate from a source to each of multiple receiver meters and/or load meters in a smart grid based on a time series of end-to-end power-flow measurements for common time intervals at the source and each of the multiple receiver meters and/or load meters in the smart grid; estimating a loss rate of each of multiple intermediate links of the smart grid between the source and each of the multiple receiver meters and/or load meters without utilization of measurements at the multiple intermediate links by identifying the sparsest solution of link loss rates that matches the end-to-end passage rates; and localizing a faulty link among the multiple intermediate links of the smart grid between the source and each of the multiple receiver meters and/or load meters based on a comparison of the estimated loss rate of each of the multiple links to an expected loss rate for each of the multiple intermediate links determined based on (i) materials used in the smart grid, (ii) distance of each of the multiple receiver meters and/or load meters from the source, (iii) topology of the smart grid, (iv) ambient conditions associated with the smart grid, and (v) measurements of loads and supply associated with the smart grid.