摘要
针对换流变压器噪声超标问题,采用6台20 kVA、220 V、阻抗18%的单相四柱式变压器(仅器身),与两套6脉波整流桥一起,连接成12脉波整流装置,模拟高压直流输电系统中的整流站.运用实验方法测定各种工况下单台换流变压器的振动和噪声,对实验数据的分析表明,阀侧绕组高次谐波电压是导致换流变压器的振动及噪声加剧的主要因素.进而提出在换流变压器阀侧并联电容的方案,通过该电容减小阀侧高次谐波电压,从而降低换流变压器的振动及噪声.实验结果表明该方法降噪效果明显.
Six single-phase four-column transformers of 20 kVA,220 V,and short-circuit impedance of 18%(only as the body of the transformer)connected with two sets of 6-pulse rectifier bridges were regarded as 12 pulse rectifier devices to simulate the rectifier stations in the HVDC transmission system.The noise of single-phase converter transformer was measured by means of the experimental method under various conditions.Through the analysis of the experimental data,it is concluded that the higher harmonic voltage of the valve side winding is the main factor leading to the vibration and noise of the converter transformer.The shunting capacitor at the valve side was proposed to reduce high-order harmonic voltage of valve side,as well as the vibration and noise of converter transformer.The experimental results show that this proposed method is effective in noise reduction.
作者
赵亮
臧英
樊纪超
代双寅
张民
孙建涛
金兆伟
罗隆福
ZHAO Liang;ZANG Ying;FAN Jichao;DAI Shuangyin;ZHANG Min;SUN Jiantao;JIN Zhaowei;LUO Longfu(College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;Shandong Electrical Engineering&Equipment Group CO.LTD,SPECO,Ji’nan 250022,China;State Power Economic Research Institute,Beijing 102209,China;Henan Electric Power Research Institute,Zhengzhou 450052,China;State Grid Corporation of China,Beijing 100031,China;China Electric Power Research Institute,Beijing 100192,China)
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2021年第2期71-79,共9页
Journal of Hunan University:Natural Sciences
基金
国家电网公司总部科技项目(5200-201955096A-0-0-00)。
关键词
换流变压器
振动
噪声
谐波电压
并联电容
converter transformer
vibration
noise
harmonic voltage
shunt capacitor
