±500 kV换流站噪声污染分析及控制措施研究

Analysis of noise pollution and control of domestic ±500 kV converter stations

为掌握±500 kV换流站的噪声污染水平,对正常运行的某±500 kV换流站内的设备噪声水平及其衰减特性进行了系统测量。结果显示该±500 kV换流站的主要噪声污染源为换流变压器、平波电抗器和交流滤波器。厂界噪声测试结果显示正常运行时该±500 kV换流站厂界超标情况较为普遍,且大部分测点的昼夜噪声值均超标。为使厂界噪声达标,在换流站围墙上加装了隔声屏障。厂界噪声监测结果表明该±500 kV换流站的敏感点区厂界噪声全部达标,噪声治理效果良好,这为换流站的设计和噪声控制提供了参考依据。

In order to master the level of transformer noise of domestic ±500 kV converter station, the transform- er noise and attenuation characteristics of device in normal operation were measured and the actual results were analyzed. The results show that the noise source was mainly from the converter transformers smoothing reac- tors and AC filter. Most of the boundary noise exceed the national emission standard. On this basis, the noise control measures are proposed to restrict the noise levels within theallowable range of national standards, which provides a reference for noise control during the designing and constructing process of substations.