Carry out live line operation to improve the relia

Carry out live working to improve the reliability of power supply

Abstract: the 10kV overhead lines of Zhuhai electric power industry bureau are mostly single power radioactive structures, which have the disadvantages of weak network and poor mutual supply capacity. The whole line power outage is also required for a single user to catch a fire. Due to the characteristics of distribution transformation, with the continuous development of market economy, the requirements for power supply quality are also constantly improving. In many cases, the impact of power failure, especially the power failure of double circuit lines on the same pole, is becoming greater and greater. When users' expectations for power distribution are higher and higher, in order to improve the reliability of power supply and reduce unnecessary power failure losses, we decided to carry out live work on 10kV lines

key words: reliability of live power supply 1 overview the 10kV overhead lines of Zhuhai electric power industry bureau are mostly single power radioactive structures, which have the disadvantages of weak network and poor mutual supply capacity. The whole line power outage is also required for a single user to catch a fire. Due to the characteristics of distribution transformation, with the continuous development of market economy, the requirements for power supply quality are also constantly improving. In many cases, the impact of power failure, especially the power failure of double circuit lines on the same pole, is becoming greater and greater. When users' expectations for power distribution are higher and higher, in order to improve the reliability of power supply and reduce unnecessary power failure losses, we decided to carry out live work on 10kV lines. Because the current technology has made great progress than before, the continuous research, improvement and development of tools and instruments, the adoption of insulated bucket trucks, tight shielding, isolation of electrified bodies and other technical measures, make the current 10kV live line operation safe and feasible. 2 implementation of live working 2.1 organize professional teams to do a good job of training in order to improve the economic and social comprehensive benefits of power supply enterprises, improve the reliability of power supply and provide high-quality services to the society. Our bureau organized and set up live working classes, and sent personnel to Shijiazhuang Electric Power Bureau for live working training. After returning, we reconstructed a 10KV live working simulation line. After one year of theoretical study and practical operation training, after passing the examination of the national live working training center, we officially carried out 10kV live working. 2.2 carry out 10kV indirect live working project (1) live disconnection and connection of unloaded leads; (2) Disconnect leads and replace 10kV equipment; (3) Live replacement of porcelain cross arms and PIN INSULATORS; (4) Live repair the conductor and handle the conductor suspension. 2.3 establishment of live working management system in recent years, 10kV live working in our bureau has experienced a process from nothing to the use of new materials on the surface, from simulation to proficiency, and continues to grow. We will always adhere to the policy of "safety first, prevention first" to eliminate potential accidents in the bud and ensure the safe operation of people and equipment. As 10kV live line operation is a new thing in our bureau, the management of this work is in the process of exploration. How to ensure that there are no personal and equipment accidents in live line operation is a new topic. First of all, pay attention to the construction of regulations and systems, and formulate the professional safety regulations for live working and the management regulations for live working tools. Establish the system of pre operation investigation, application, preliminary examination and approval; Secondly, formulate relevant regulations to ensure the safety of 10kV live line operation; It is required that the downleads of distribution transformers, power cables and column switches all adopt 10kV cross-linked insulated wires, and all kinds of 10kV downleads in operation shall be replaced with 1 during overhaul, change and accident treatment. The weight of B thallium and C thallium shall be appropriately reduced. 0kv cross-linked insulated wires. 2.4 strengthen the safety management and technical management of 10kV live line operation. In view of the particularity and danger of live line operation, summarize and analyze the safety measures in live line operation and the ideological instability factors of personnel, raise vigilance, strengthen prevention, strictly implement safety regulations and various safety regulations, and effectively ensure the safety of operation. 4. Control system damage 3. Improve the reliability. From daily maintenance work to accident emergency repair, from safety assessment and rectification work to Macao's return and reconstruction project, live line work shines everywhere, plays an active role in ensuring the safe operation of equipment and electricity, and makes a positive contribution to the high-quality service of our bureau. A total of 867 10kV live line operations were carried out in the year, reducing the number of households with 25955 hours of power failure, providing more than 3 million KW · h of power supply, and improving the reliability of power supply by 0.2%. 4 outlook with the continuous improvement of customers' requirements for the reliability of the distribution system, it is more necessary to continuously improve and develop the live working technology of 10kV overhead lines. Special attention should be paid to the safety of live working and the relationship between power supply reliability and safety. The design of new overhead lines and platforms should also fully consider the coordination of live working and design standards. Looking forward to the future, 10kV live line operation has great prospects and will make greater contributions to improving the reliability of power supply