特高压变压器用绝缘材料性能研究

发布时间：2018-06-18 00:53

本文选题：绝缘纸板 + 成型绝缘件　；参考：《山东大学》2017年硕士论文

【摘要】：特高压输电能够大大提高电能的传输容量和传输距离,提高电能传输的经济性,节省线路走廊,非常适用于我国输电距离长的特点。目前,我国在特高压输电领域处于世界领先的地位。特高压电网的建设带来特高压变压器及其原材料和组部件批量化采购的需求。依托特高压交流和直流输电工程的发展和建设,国内特高压变压器制造企业在特高压变压器整机自主设计和生产制造方面取得了巨大进步,特高压变压器制造厂的产能已能满足工程应用需求。目前,国内绝缘材料制造企业生产的产品在交流750kV及以下电压等级的变压器项目上得到了广泛应用,但在特高压变压器上应用较少。缺乏特高压工程运行经验是国内绝缘材料制造企业的短板,而已经顺利通过型式试验和特高压工程带电运行考核的特高压变压器的设计、工艺运行性能都是在采用国外进口绝缘材料的基础上实现的。特高压绝缘材料的进口造成当前特高压变压器的制造成本高、生产周期长,随着后续特高压工程的快速推进,国产绝缘材料在特高压变压器上的应用需求更大。本论文主要针对特高压交流变压器绝缘纸板、绝缘成型绝缘件的性能进行了研究。主要对国产及进口绝缘纸板和成型绝缘件的电气性能、机械性能进行对比分析;提出了绝缘纸板及成型绝缘件制作的工艺改进措施;仿真分析了特高压变压器主绝缘设计结构中的电场分布情况;同时考核了国产及进口绝缘纸板的老化试验,对比分析国产及进口绝缘材料对特高压变压器长期运行稳定性的影响。通过以上研究分析,国产绝缘纸板及成型绝缘件在性能上已经能够满足特高压交流变压器的使用要求,为实现特高压变压器绝缘材料国产化提供理论基础。随着特高压直流技术的不断发展,特高压直流线路建设会持续增强,特高压换流变压器必然会占据更大的市场。在产品结构方面会向更大电压、更大容量发展,对产品绝缘性能要求更高。
[Abstract]:UHV transmission can greatly improve the transmission capacity and distance of electric energy, improve the economy of power transmission, and save the line corridor, which is very suitable for the long transmission distance in China. At present, our country is in the world leading position in the field of UHV transmission. The construction of UHV power grid brings the demand of bulk purchasing of UHV transformers and their raw materials and components. Relying on the development and construction of UHV AC and DC transmission projects, domestic UHV transformer manufacturing enterprises have made great progress in the independent design and manufacture of UHV transformers. The production capacity of UHV transformer factory can meet the requirement of engineering application. At present, the products produced by domestic insulating materials manufacturing enterprises have been widely used in transformer projects with AC voltage grades of 750 kV and below, but few in UHV transformers. The lack of operation experience in UHV projects is the short board of domestic insulating material manufacturing enterprises, and the design of UHV transformers, which have passed the type test and live operation assessment of UHV projects successfully, The process performance is realized on the basis of imported insulating materials. The import of UHV insulation materials causes the high manufacturing cost and long production cycle of UHV transformers. With the rapid development of subsequent UHV projects, the application demand of domestic insulating materials on UHV transformers is greater. In this paper, the performance of insulating board and insulating parts of UHV AC transformer is studied. The electrical and mechanical properties of domestic and imported insulator board and moulded insulating parts are compared and analyzed, and the technological improvement measures for the manufacture of insulator paper board and moulded insulating parts are put forward. The electric field distribution in the main insulation design structure of UHV transformer is simulated and analyzed, and the aging test of domestic and imported insulating paperboard is also examined. The effects of domestic and imported insulating materials on the long-term operation stability of UHV transformers are compared and analyzed. Through the above research and analysis, the performance of domestic insulator paper board and shaped insulating parts can meet the requirements of UHV AC transformers, which provides a theoretical basis for realizing the localization of UHV transformer insulation materials. With the development of UHV DC technology, UHV DC line construction will continue to strengthen, UHV converter transformer will inevitably occupy a larger market. In the product structure will develop to greater voltage, greater capacity, higher requirements for product insulation.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM41

【参考文献】