Ethiopia is nowadays in urgent need of developing a modern power grid to meet the growing demand for reliable, cost-effective and environmentally friendly transmission and distribution of electric energy. The population growth, as well as development of various industries and agricultural and mining activities, increases pollution sources and yield new types of pollutants. Ensuring the safety and reliability of the network operation is thus among the top priorities for the local power companies. In addition, proper selection and dimensioning of outdoor insulation play a significant role in preventing or limiting the number of pollution induced flashovers on high voltage (HV) insulators in high voltage overhead lines, power generation plants and substations.

中文翻译：

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评估与埃塞俄比亚污染和气候条件相关的外部绝缘问题

埃塞俄比亚现在迫切需要发展现代电网，以满足对可靠、经济和环保的电能传输和分配日益增长的需求。人口增长，以及各种工业和农业和采矿活动的发展，增加了污染源并产生了新型污染物。因此，确保电网运行的安全性和可靠性是当地电力公司的首要任务之一。此外，户外绝缘的正确选择和尺寸设计对于防止或限制高压架空线路、发电厂和变电站中的高压 (HV) 绝缘子上的污染引起的闪络次数具有重要作用。