The impact of feeder reconfiguration on automated distribution network with respect to resilience concept
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The impact of feeder reconfiguration on automated distribution network with respect to resilience concept Hossein Lotfi1 · Ali Asghar Shojaei1 · Vahid Kouhdaragh2 · Iraj Sadegh Amiri3 Received: 6 March 2020 / Accepted: 26 August 2020 © Springer Nature Switzerland AG 2020
Abstract Owners of power systems incur high costs and investments to transfer the electrical power to customers in the distribution network. Hence, the reliability of the distribution network is particularly important in the lives of customers. Natural disasters such as hurricane and earthquake or sudden faults may threaten the reliability of the distribution network. Therefore, the focus of this study is to provide a new formulation for the distribution system resilience and voltage security. To improve the mentioned objectives in the automated distribution system, the concept of distribution feeder reconfiguration (DFR) is used in this study. Due attention of distribution network resilience and voltage security issues, energy not supplied and voltage stability index along with power loss are considered as objective functions. According to the increase of distributed generators in the distribution network, the effect of these units is considered in the DFR problem. An improved particle swarm optimization is presented to solve the complex and non-convex DFR problem. The proposed algorithm is tested into two distribution systems including IEEE 33 and 70-node. Keywords Resilience · Distribution feeder reconfiguration · Energy not supplied · Voltage stability index
1 Introduction Developing the resilience of power grids versus natural disasters is the main problem for all countries. Recently, hurricanes, flooding, earthquake, and tsunami have resulted in very high economic and human casualties. More than 129 power lines were damaged by ice disaster in the south of China in 2008 and most of the power facilities were ruined in 13 provinces, causing power blackouts for about 14.66 million families [1]. In 2016, a tornado in the Jiangsu province of China caused power outages of 135,000 households [1]. An 8.8 Richter scale quake occurred in central Chile in February 2010 and a tsunami after an earthquake affected the seaside and crowded parts of the country. The major supplies crumbled, disconnecting electricity, gas, water,
phones caused the suffering of the people [2]. Most of the earthquake damages were due to power distribution networks, so that many large cities did not have electricity for several weeks. Therefore, to investigate the effects of natural disasters on the power grid and to assess the efficiency of the essential reactions against catastrophes, conception of resilience in the power grid was introduced and then the ability of the power grid to cope with natural disasters was assessed [3]. As the distribution grid has the adjoining association to the life of clienteles, the resilience of the distribution grid is mostly appeared by the ability to provision and recovery of dangerous loads under the distribution grid in the natural disaste
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