特高压直流换流站设备的降噪措施

Study on Noise Reduce for Equipment at UHVDC Converter Station

为了有效抑制换流站可听噪声水平,在总结现有直流输电工程换流站设备噪声源的基础上,采用SOUNDPLAN软件模拟换流站噪声源,计算分析声场,提出了针对换流站从设备本体设计、抑制噪声传播等方面降噪的方法。同时针对特高压换流站噪声水平进行计算预测,比较特高压换流站采用不同降噪措施后的降噪水平,提出了特高压换流站的换流变压器等设备应采用屏蔽或box-in等措施以抑制噪声水平抑制在国家标准允许的范围内。

For HVDC converter station, acoustic sound level is an important part of the electromagnetic, the noise sources in converter station are investigated and analyzed Different schemes are taken to aim at the exact sound-emitting components. Ventilation noise barriers are built for the converter transformers and smoothing reactors. Low noise reactors are also developed and have much better effect. After the mitigation measures, the noise level of the whole converter station and the adjacent area is evidently improved showing in the noise level map, and also meet the demand of the compulsory Chinese standard. Also soundplan is used to estimate the sound level of a UHVDC converter station, and different reducing sound level method is compared for UHVDC project. At last for the most important equipment in converter station such as transformer screen or ＂box-in＂ shall be used to reduce the sound level according to the GB standard.