【摘要】 为有效控制和治理超/特高压变电站噪声,以西北电网某750 kV变电站为研究背景,对站内已投运的主要电气设备的噪声进行测量。对每个需测设备选取沿轮廓线分布的测量点,每个测量点均测量3次,取平均值;然后,对测量数据进行特性分析和频谱分析。结果表明,主变压器和高压电抗器的各相频谱图整体呈对称分布,其中变压器噪声值在100～800 Hz频段较高,电抗器在100～500 Hz频带范围内的噪声值较高,冷却装置、带电架构对变压器和电抗器的噪声频谱分布具有一定影响,环境噪声对变电站噪声的影响基本可以忽略不计。经过测量和分析可知,高压电抗器和主变压器是站内主要噪声源,并且各个设备间会相互影响。更多还原

【Abstract】 In order to control and manage the noise of UHV/EHV high voltage substation effectively, taking a 750 kV substation in Northwest Power Grid as the research background, the noise of the main electrical equipments in the station is measured. The measuring points are selected along the contour line for each equipment to be measured, each of which is measured three times and the average value is obtained. And then, the characteristics and spectrum of the measured data are analyzed. The results show that the phase spectra of the main transformer and the high voltage reactor are symmetrically distributed, that the noise value of the transformer is higher in the frequency band of 100～800 Hz and the noise value of the reactor is higher in the frequency band of 100～500 Hz,that cooling device and live structure have certain influence on noise spectrum distribution of transformer and reactor,and that the influence of environmental noise on substation noise can be neglected. Through measurement and analysis, it is known that high-voltage reactor and main transformer are the main noise sources in the station, and each equipment would interact with each other.更多还原