Research And Application Of Fault Self-healing Technology In Shaoguan Power Distribution Network

Distribution lines are an important part of the power system and are responsible for the transmission of electrical energy to power users in the power system.At present,the urban distribution network lines are mainly cable lines,and the mountain distribution network lines are mainly overhead lines.Although the power supply reliability of the cable line in line operation is high and the failure rate is low,it often encounters faults and power failures caused by insulation aging and external force damage.Overhead lines face more failure factors such as lightning strikes,insulation equipment damage,Disconnection,grounding caused by over-height trees,etc.Therefore,how to improve the reliability of the power supply of the distribution network,and quickly realize the fast fault location,fault isolation and restoration of the power supply of the non-faulty line section when the distribution network line and equipment fail,so as to achieve the self-healing of the distribution network fault and reduce the faulty power failure section and The duration of power outages is one of the long-term and widespread concerns of power systems.In recent years,with the rapid economic development in Shaoguan,power customers have increasingly higher requirements for power supply reliability.Shaoguan City is located in the northern part of Guangdong Province.Most areas are mountainous and hilly,with complex terrain and harsh atmospheric conditions.The Shaoguan distribution network is dominated by overhead lines,with long power supply radius,many line corridors passing through mountains and forests,some places are inaccessible,and the line T is connected to many small hydropower stations.Therefore,the line failure rate is high,the line fault finding workload is heavy,and the task is heavy.The research and application of distribution network fault self-healing technical measures can effectively improve the level of distribution network fault location and fault isolation,and reduce the power failure area and power failure time of the distribution network line.This paper takes the Shaoguan distribution network as the research object,demonstrates and analyzes the research and application of the distribution network fault self-healing technology.The full text is divided into five parts,the first part is the introduction,mainly to elicit the research purpose and content of this article.The second part mainly introduces the scale and operation of the distribution network of Shaoguan distribution network.The third to fifth parts are the key parts of this article.Before conducting the research and application of the distribution network fault self-healing technology,it is first necessary to determine which distribution network fault self-healing technologies and the advantages and disadvantages of various distribution network self-healing technologies.Therefore,there is the third part of this article,the third part is mainly research The types and differences of the current distribution network self-healing technology.The fourth part introduces the automation construction of Shaoguan distribution network,and combined with the distribution network fault self-healing technology introduced in Chapter 3,a fault self-healing scheme suitable for the distribution network in the mountainous area of Shaoguan is selected;the fifth part is determined in the fourth part The application research of the distribution network fault self-healing scheme is carried out to verify the self-healing effect of the distribution network fault.Since the typical mountain distribution lines are selected,the research results of this article can provide a good reference value for the self-healing of mountain distribution lines.