中国电力科学研究院，北京市 海淀区 100192

换流站的噪声控制是发展特高压直流输电需要解决的关键技术之一。给出了±800 kV换流站附近居住区和换流站厂界噪声的建议限值；对换流站阀厅和换流变压器按一字形和面对面2种方式布置的换流站噪声分布进行了计算分析；对在换流变压器等主要声源附近加装声屏障和换流变压器加装隔音罩的降噪效果进行了分析。结果表明，±800 kV换流站的阀厅和换流变压器按面对面布置可有效改善站外噪声环境，采取一定降噪措施后，可使围墙外20m的声压级满足II类夜间标准要求(不超过50 dB(A))。

±800 kV换流站   可听噪声   降噪措施   电磁环境

Noise control is one of the key problems to be solved during the development of UHVDC power transmission. In this paper the recommended limit value of audible noise in the residential area near ±800kV converter station and that in the field of ±800kV converter station are given; the noise distribution in converter station, where the layout of valve hall and converter transformer are in single-line form or in face-to-face form, is calculated and analyzed; the effects of noise reduction measures, namely installing sound barrier near the main sound sources such as converter transformers or installing sound proof housing around the converter transformer, are analyzed. Analysis results show that the noise environment outside the ±800kV converter station can be effectively improved by use of the layout of valve hall and converter transformer in face-to-face form; when a certain noise reduction measures are adopted, the sound pressure level at the position that is 20m apart from the wall of converter station can satisfy the nightly standard requirement of the area in second class, i.e., not exceeding 50dB(A).

±800 kV converter stations   audible noise   noise reduction measures   electromagnetic environment