【作者】 姜文东；

【导师】 郭创新； 俞培祥；

【作者基本信息】 浙江大学 ， 电气工程， 2011， 硕士

【摘要】 对于输电线路覆冰情况进行在线监测,在冰灾期间,能够用于监测导线覆冰情况并进行实时预警,以指导直流融冰装置有选择性的融冰；同时在正常运行情况下,能够充分发挥本系统的在线监测设备作用,在负荷高峰季节,可作为动态增容应用监测。本课题主要对覆冰计算模型、通信传输方式、前端装置电源选用、系统软件功能需求进行研究和分析,建设一套与直流融冰装置配合的输电线路覆冰在线监测系统。本课题研究内容主要有三个创新点：无线网络+OPGW光缆宽带通信方式最高实现高达100M/S通道速率；电能供应系统采用具有比能量高、耐低温、超高温不爆炸、自放电率低等特点的磷酸铁锂电池作为储能和供能电源/太阳能(风光互补)作为充电能源；两档三塔覆冰计算模型、多模式覆冰测量融合及互补策略,克服了单塔模型以及单塔两档模型的缺点,能计算不平衡张力和杆塔荷载变化,也考虑了档内不均匀覆冰的集中荷载情况,提高垂直档距和覆冰厚度计算的准确性。更多还原

【Abstract】 For the transmission line on-line monitoring of ice conditions, during the ice storm, ice can be used to monitor the situation and lead to real-time early warning to guide the DC device to selectively melt the ice melting ice. At the same time under normal operating conditions, the system can fully play the role of online monitoring equipment in the peak load season, the capacity increase as a dynamic application monitoring. The main subject of the calculation model of ice, communications transmission, front-end device power use, functional requirements for system software research and analysis, construction of a melting ice plant and DC transmission lines with ice-line monitoring system.This research mainly has three innovations:wireless broadband communication network OPGW cable up to the highest 100M/s channel rate; Power supply system using a high energy, low temperature, ultra-high temperature non-explosive, low self-discharge characteristics of lithium iron phosphate as the energy storage and energy supply power/solar power as the charging energy; Two tranches of three towers ice computational model, multi-modal integration and complementary ice measurement strategies to overcome the single-tower model and the shortcomings of a single tower two steps of the model can calculate the unbalanced tension and tower load changes, but also takes into account the uneven profile of concentrated load of ice conditions to improve the vertical span and calculated the accuracy of ice thickness.更多还原