500kV变电站噪声源强迭算与预测方法优化  

Calculation of Noise Source Intensity and Optimization on Prediction Method for 500kV Substation

作　　者：严青[1] 何清怀 曾媛[1] 陈笠[1] YAN Qing;HE Qinghuai;ZENG Yuan;CHEN Li(Sichuan Electric Power Design & Consulting Co., Ltd., Chengdu, Sichuan 610041, China)

机构地区：[1]四川电力设计咨询有限责任公司,四川成都610041

出　　处：《广东电力》2018年第12期1-11,共11页Guangdong Electric Power

基　　金：四川电力设计咨询有限责任公司科技项目(kj2015-b-5)

摘　　要：为提高变电站噪声预测准确率,需要建立变电站噪声预测的源强数据库,同时优化变电站噪声预测方法。依托四川电网具有代表性的5个500kV变电站内外噪声实测数据,采用噪声源强迭算方法,获得了主变压器、高压电抗器、低压电抗器、电容器、金具的噪声源强大小与频谱特性,同时对主要声源采用简化垂直面源设置、地形分区贴合辅助控制面技术等手段优化变电站噪声预测方法。通过Cadna/A建模预测,变电站内外不同区域噪声预测结果和监测结果总体吻合,该预测方法能较准确地反映变电站投运后的噪声情况。In order to improve prediction accuracy of substation noise,it is required to establish the noise source intensity database and optimize the prediction method.According to measured data outside and inside five representative500kV substations of Sichuan power grid,this paper adopts the noise source calculation method to obtain noise source intensities and spectrum characteristics of the main transformer,the high-voltage reactor,the low-voltage reactor,the capacitor and the amour clamp.Meanwhile,it uses methods such as simplifying layout of the main sources as vertical area source and the technology of partitioned terrain fitting assistant control plane to optimize prediction method for substation noise.By means of Cadna/A modeling prediction,it obtains close results of prediction and monitoring of noise outside and inside the substation,which indicates this prediction method can accurately reflect noise of the substation.

关 键 词：500KV变电站 噪声源 源强迭算 噪声监测 噪声预测 

分 类 号：TM63[电气工程—电力系统及自动化] TB52[理学—物理]