拉西瓦水电站750 kV出线电磁干扰分析研究

Study on Electromagnetic Interference of 750 kV Outgoing of Laxiwa Hydropower Station

结合拉西瓦水电站750 kV出线站设计,针对其工频电场、工频磁场、无线电干扰和电晕噪声等电磁参数进行了分析与计算。经计算,750 kV出线站距地1.5 m高处最大电场强度为9.0 kV/m,最大无线电干扰强度为48.07dB,湿导线条件下最大可听噪声45.77 dB,各电磁环境参数满足750 kV变电所设计暂行技术规定的要求。

For the design of 750 kV outgoing station of Laxiwa Hydropower Station, electromagnetic parameters, such as power frequency electric field, power frequency magnetic field, radio interference and corona noise are analyzed and calculated, and the results shows that, for the place with a height of 1.5 m to ground in outgoing station, the maximum electric field density is 9.0 kV/m, the largest radio interference intensity is 48.07 dB, and the largest audible noise is 45.77 dB under the condition of wet-conductor. All electromagnetic parameters for this outgoing station meet the requirement of relating design specifications.