A novel dynamic model on power failure propagation and its application to load shedding optimization
Publication date: Available online 23 April 2019Source: Physics Letters AAuthor(s): Shihao Nie, Li Ding, Mingyu Huang, Ping HuAbstractIn this letter, we proposed a novel individual-based dynamical model to study failure propagation in power system. In this model, a transmission line fails with a probability related to additional load transferred by other failed lines, where load upon failure of power lines is based on global and equal redistribution. Besides, the line recovers with a certain probability, and the failure levels of lines is depicted as a probability rather than a Boolean value subject to the mean-field theory. Based on this model, the outbreak threshold of the power system was analyzed. We gave the mathematical expression of the threshold for the outbreak of power failure scale and conducted simulation experiments to verify the theoretical value. Additionally, we discussed the optimal load shedding problem to minimize the objective function related to the cost of failure and load shedding. Lastly, the numerical simulations were provided to illustrate our theoretical results.
Public transport suspended in at least 13 cities in China as death toll rises and France identifies Europe ’s first casesWhat we know so farLessons from Sars outbreak help in race for vaccineChina has expanded an unprecedented lockdown during the country ’s most important holiday to 13 cities and at least 36 million people, as efforts to contain the deadly new coronavirus were stepped up around the world and the first cases were reported in Europe.Restrictions on movement were widened on Friday in China in an effort to stop the spread of the disease. Late on Friday, authorities confirmed a further 15 deaths and...
Liang Wudong, 62, died after treating patients in Wuhan amid signs that health workers are overwhelmed by the outbreakA doctor treating victims infected with the coronavirus in the Chinese city of Wuhan has died from the virus amid further signs that the local health system has been overwhelmed and that the outbreak is worsening.The 62-year-old doctor Liang Wudong died on Saturday morning, state media said, and it was also reported by the Chinese Global Times website that another doctor who had been treating patients in Wuhan died of a heart attack later in the day. It was not clear if Jiang Jijun, 51, had contracted the v...
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