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发明公开
CN109143138A 一种特高压设备外绝缘耐受电压海拔修正的方法 无效 - 驳回

一种特高压设备外绝缘耐受电压海拔修正的方法
摘要：
本发明公开了一种特高压设备外绝缘耐受电压海拔修正的方法，属于高电压绝缘技术领域。具体包括：步骤一，获取计算特高压设备外绝缘耐受电压要求值所需的安全因数ks、配合系数kc、操作冲击电压配合系数ksc和代表性过电压Urp，根据ks、kc、ksc和Urp确定不同类型作用电压的耐受电压Uw，并将Uw做为海拔修正的基准电压；步骤二，根据需要进行外绝缘耐受电压修正的海拔高度，计算海拔修正系数Ka，步骤三，计算所述目标特高压设备的外绝缘耐受电压要求值U1，步骤四，根据U1确定目标特高压设备修正后的外绝缘额定耐受电压。本发明降低了高海拔特高压设备的外绝缘水平、制造难度、成本、运输难度和占地面积等，提高了特高压输电技术的经济性和实用性。
摘要（英）：

The invention, which belongs to the technical field of high-voltage insulation, discloses a method for correcting an external-insulation voltage-withstanding elevation of an ultra-high voltage device.The method comprises: step one, acquiring a safety factor ks, a matching coefficient kc, an operating impulse voltage matching coefficient ksc, and a representative overvoltage Urp that are needed for calculating an external-insulation withstanding voltage required value of an ultra-high voltage device, determining withstanding voltages Uw of different types of acting voltages based on the ks, kc, ksc, and Urp, and using the Uw as a reference voltage for elevation correction; step two, calculating an elevation correction coefficient Ka according to the elevation needing external-insulation withstanding voltage correction; step three, calculating an external-insulation withstanding voltage required value U1 of a target ultra-high voltage device; and step four, according to the U1, determining a corrected external-insulation rated withstanding voltage of the target ultra-high voltage device. Therefore, the external insulation level, manufacturing difficulty, cost, transportation difficulty and occupied space of the high-altitude ultra-high voltage device are reduced; and the economy and practicability of the ultra-high voltage device are improved.

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