摘要
变电站运行噪声带来的环境影响逐渐得到重视,因此需要合适的噪声预测模型来准确评估站内噪声水平。500 kV变电站的主要噪声源是主变压器,在以往的工程实践中常采用现有技术规范中给出的概化的主变噪声模型,预测结果往往与实际情况有一定差距。基于Cadna/A和实际测量,在以往研究的基础上提出声源具有指向性的多点等效源主变模型。对某典型500 kV变电站的仿真计算与实测数据的对比分析表明,以该模型构建的500 kV变电站噪声预测模型能较为准确地预测500 kV变电站站内及厂界噪声值,误差不超过2 dB(A)。
More and more attention has been paid to the environmental impact caused by noise in substation operation.Therefore,appropriate noise prediction models are needed to accurately assess the noise level in substation.The main noise source of 500 kV substation is the transformer.In the past engineering practice,the generalized noise model of the main transformer given in the existing technical specifications is often used,and the prediction results often have a certain gap with the actual situation.Based on Cadna/A and actual measurement,this paper proposes a multi-point equivalent source main transformer model with directivity of sound source based on previous research.The comparison between the simulation calculation and the measured data of a typical 500 kV substation shows that the 500 kV substation noise prediction model constructed by this model can accurately predict the noise value in the 500 kV substation and the boundary of the plant,and the error does not exceed 2 dB(A).
作者
孙和泰
华伟
邱勇军
李浩然
李慧奇
杨光
Sun Hetai;Hua Wei;Qiu Yongjun;Li Haoran;Li Huiqi;Yang Guang(Jiangsu Fangtian Electric Technology Co.,Ltd.,Nanjing 211100,Jiangsu,China;Department of Electric Power Engineering,North China Electric Power University,Baoding 071000,Hebei,China)
出处
《计算机应用与软件》
北大核心
2021年第7期120-123,158,共5页
Computer Applications and Software
基金
国家电网公司科技项目(SGTYHT/17-JS-199)。
关键词
变电站
变压器
指向性
噪声模型
噪声预测
Substation
Transformer
Directivity
Noise model
Noise prediction
