摘要
针对传统工业整流系统谐波抑制和无功补偿方案存在的问题,提出一种基于谐波抑制整流变压器及其滤波系统的新型工业整流系统。新系统中整流变压器采用三绕组结构,阀侧滤波绕组采用独特的变压器零等值阻抗设计,配之以全调谐滤波装置,利用基于谐波磁通抑制机理的变压器滤波技术,可以实现阀侧谐波源处就近抑制谐波和补偿无功,从根本上解决了谐波和无功对整流变压器的影响。对新型谐波抑制整流变压器及其滤波系统的接线方案、谐波抑制机理和无功补偿原理进行研究,建立了新型工业整流系统仿真模型。仿真与现场测试结果表明,新型整流系统谐波抑制和无功补偿效果显著,整流变压器网侧绕组电流中谐波含量大大降低;改变了谐波和无功功率在系统中的传递路径,从而降低了系统谐波和无功损耗,提高了系统供电效率,实现了节能降耗;同时明显降低谐波在整流变压器中引起的振动和噪音。
Aiming at problems of harmonic suppression and reactive power compensation existing in the traditional industrial rectifier system,we put forward a novel rectifier system based on harmonic suppression rectifier transformer and its filter system.The new rectifier transformer adopts a three-winding structure,and its filter windings at the valve-side adopt unique zero equivalent impedance design and configure the related full-tuned filter equipment.Using the transformer filtering technology based on harmonic magnetic flux suppressing mechanism,the novel rectifier system can effectively restrain harmonic and compensate some reactive power at valve-side of the new rectifier transformer.Consequently,the effect of harmonic and reactive power on the rectifier transformer can be essentially resolved.Moreover,the connection scheme,harmonic suppressing mechanism and reactive power compensating principle of the new rectifier transformer and its filter system are analyzed.Thereby,the simulation model of novel industrial rectifier system is established.The simulation and on-site test results show that： compared with traditional rectifier system,the new system has excellent harmonic suppressing and reactive power compensating effects,and the harmonic content of the grid-side winding current of new rectifier transformer is greatly reduced;The power flow path of harmonic and reactive power in the system is changed so as to reduce the harmonic and reactive power loss,to improve power supply efficiency of rectifier system,and to realize energy saving and lowering consumption;In addition,the vibration and noise of rectifier transformer caused by harmonic current are significantly reduced.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2011年第12期3164-3170,共7页
High Voltage Engineering
基金
湖南省"十一五"重大科技专项项目(06GK1003-1)
国家自然科学基金(50907018)~~
关键词
新型整流变压器
谐波抑制
无功补偿
零等值阻抗设计
全调谐滤波装置
节能降耗
novel rectifier transformer
harmonic suppression
reactive power compensation
zero equivalent impedance design
full-tuned filter equipments
energy saving
