Structural safety of transmission towers is directly related to the reliability of the state grid. In fact, wind loading is taken as one of the main harmful factors.
输电塔结构的安全直接关系到国家电网的运行可靠性，而风荷载则是威胁其安全的主要外因之一。
2
Container takes charge of many important tasks, for example issuing services, loading dynamically gird service programs and assuring security of grid service programs.
In the ice calamity accident of power grid on beginning of 2008, the common condition in the accident of transmission line was the ice loading on earth wire fittings and insulators.