An Islanding Algorithm to Restore a PMU Installed Power System

Abstract

This paper is concerned about islanding of network and observability of these islands in power system restoration. It is assumed that a black out happened on a system which have minimum PMUs (phasor measurement units) for measuring network's parameters. To restore this system an algorithm of islanding that keeps all islands observable to make the restoration process shorter is introduced and developed step by step on the IEEE 14 bus system and it is applied to the New England 39 bus system to show the result for a bigger system.

An improved algorithm for PMU assisted islanding in smart grid

“…An algorithm for intentional islanding of a power grid satisfying various islanding constraints was presented in [2], [3]. However the algorithm is not applicable to all networks and failed to keep the islands observable in some cases, as shown in the present paper.…”

Robust Wide Area Controller Design with DFIG-Fractional Order PID for Inter-Area Oscillations Damping

“…In this paper, SSI [26] is adopted to estimate state space model and derive low frequency oscillations parameters of power system online using measured signals to make sure whether to use DFIG-WADC is used to suppress inter-area oscillation.…”

“…The discrete time invariant system can be shown in the following [26]: [27] is adopted to determine state space model of system from impulse responses due to N4SID algorithm is noniterative, with no nonlinear optimization part involved.…”

A power system build-up restoration method based on wide area measurement systems

“…The boundary lines: transmission lines between the islands which are out of operation when the network works in island operation condition [9].…”