Blackout

About: Blackout is a research topic. Over the lifetime, 2088 publications have been published within this topic receiving 30433 citations.

A New Restoration Strategy in Microgrids after a Blackout with Priority in Critical Loads

Abstract: The danger of a total blackout in a wide area or, even worse, in a country is always present. The restoration methods after a blackout mainly focus on the strategy that the dispatchers in the control centers of the Transmission System Operator will follow than the abilities that the distribution’s microgrids have. This study suggests a restoration technique to improve distribution system resilience following a blackout, using distributed generation for the restoration of important loads. The goal of the restoration problem is to maximize the number of critical loads that are restored following the catastrophic incident. Under the restrictions of the DGs and the network, the DGs with good black start capability are restored first. Load weight and node importance degree are suggested during the recovery path selection procedure, while taking node topological importance and load importance into account. A mixed-integer linear program (MILP) is used to simulate the issue, and the modified IEEE 39-bus test system is used to verify the efficacy of the suggested restoration approach.

Adaptive and optimal under frequency load shedding

Abstract: Power systems in many countries are stressed towards their stability limit. If these stable systems experience any unexpected serious contingencies, or disturbances, there is a significant risk of instability, which may lead to wide-spread blackout. Frequency is a reliable indicator for such instability condition exists on the power system; therefore under-frequency load shedding technique is used to stable the power system by curtail some load. In this paper, the SFR-UFLS model redeveloped to generate optimal load shedding method is that optimally shed load following one single particular contingency event. The proposed optimal load shedding scheme is then tested on the 39-bus New England test system to show the performance against random load shedding scheme.

Analysis of Large-Scale Blackout Occurred on July 30 and July 31,2012 in India and Its Lessons to China’s Power Grid Dispatch and Operation

Abstract: The occurrence and expansion of large-scale blackouts occurred on July 30 and 31,2012 respectively in India Power Grid and the restoration of the power grid from the blackouts as well as the analysis on the reason causing the large-scale blackouts are presented.On the basis of summing up the lessons from the large-scale blackouts occurred in India,the main large-scale blackouts occurred in foreign countries in recent years are retrospected and the common character of these blackouts and differences among them are summarized.Finally,based on China’s power grid operation and management and actual conditions of interconnected interregional power grids in China,the lessons to be learnt from large-scale blackouts occurred abroad for China’s power grid dispatch and operation are listed.