直流输电的谐波特性.pdf

直流输电的谐波特性徐政 浙江大学 HVDC&FACTS Research Center 0571-87952074, 2008年8月徐政 浙江大学 HVDC&FACTS Research Center 0571-87952074, 2008年8月内容提要1、六脉波换流器谐波特性2、十二脉波换流器谐波特性3、总结第1章六脉波换流器谐波特性六脉波换流器谐波特性直流输电系统三相6脉波换流器工作模式三相6脉波换流器工作模式阀的触发次序-200-10001002000.800.810.820.830.84Magnitude (Mag)Time (s)Va Vb Vc 三相6脉波换流器工作模式-200-10001002000.800.810.820.830.84Magnitude (Mag)Time (s)FYY1FYY4VaVcα＝00三相6脉波换流器工作模式α＝600-200-10001002000.800.810.820.830.84Magnitude (Mag)Time (s)FYY1FYY4VaVc三相6脉波换流器工作模式α＝00-1.5-1.0-0.50.00.51.01.50.800.810.820.830.84Magnitude (Mag)Time (s)IAYIBYICY 三相6脉波换流器工作模式α＝600-1.0-0.50.00.51.00.800.810.820.830.84Magnitude (Mag)Time (s)IAYIBYICY 三相6脉波换流器工作模式α＝00与α＝600的比较-1.5-1.0-0.50.00.51.01.50.800.810.820.830.84Magnitude (Mag)Time (s)IAY a=0IAY a=60三相6脉波换流器工作模式α＝00-500501001502000.800.810.820.830.84Magnitude (Mag)Time (s)Udc1 Udc2 三相6脉波换流器工作模式α＝600-500501001502000.800.810.820.830.84Magnitude (Mag)Time (s)Udc1Udc2三相6脉波换流器工作模式交流侧电流频谱0.00.20.40.60.81.00.00.10.20.30.40.503006009001200IAY kA-Main (Mag)IAY60-MAIN (Mag)Frequency (Hz)IAY @a=0IAY @a=60三相6脉波换流器工作模式Alpha=0时的直流电压频谱0100200300400010020030040003006009001200Udc1 kV-Main (Mag)UDC2-MAIN (Mag)Frequency (Hz)Udc1UDC2三相6脉波换流器工作模式Alpha=60时的直流电压频谱05010015020005010015020003006009001200UDC1_60-MAIN (Mag)UDC2_60-MAIN (Mag)Frequency (Hz)UDC1UDC2第2章十二脉波换流器谐波特性十二脉波换流器谐波特性12脉波换流器两个相同的六脉动换流器通过Y−Y和Δ−Y 接法的变压器并联运行12脉波换流器-6-4-202460.800.810.820.830.84Magnitude (Mag)Time (s)IADIAS IAY α＝0012脉波换流器α＝300-4-20240.800.810.820.830.84Magnitude (Mag)Time (s)IADIASIAY12脉波换流器α＝00-10001002003004000.800.810.820.830.84Magnitude (Mag)Time (s)Udc1 Udc2 12脉波换流器α＝300-10001002003004000.800.810.820.830.84Magnitude (Mag)Time (s)Udc1Udc2 12脉波换流器α＝00时的电流频谱0.00.51.01.50.00.51.01.52.02.53.00.00.51.01.503006009001200IAD kA-Main (Mag)IAS kA-Main (Mag)IAY kA-Main (Mag)Frequency (Hz)IADIAS IAY12脉波换流器α＝300时的电流频谱0.00.51.01.50.00.51.01.52.02.53.00.00.51.01.503006009001200IAD 30-MAIN (Mag)IAS 30-MAIN (Mag)IAY 30-MAIN (Mag)Frequency (Hz)IADIASIAY12脉波换流器α＝00时的电压频谱0200400600800020040060080003006009001200Udc1 kV-Main (Mag)Udc2 kV-Main (Mag)Frequency (Hz)Udc1Udc212脉波换流器α＝300时的电压频谱0100200300400500600010020030040050060003006009001200UDC1 30-MAIN (Mag)UDC2 30-MAIN (Mag)Frequency (Hz)UDC1UDC2第3章总 结总 结小结?一个p脉波换流器在交流侧产生谐波电 流，次数为h=pn±1，在直流侧产生谐 波电压，次数为h=pn?一个12 直流输电系统在交流侧产生11、 13、23、25、35、37等次谐波电流，在 直流侧产生12、24、36、48等次谐波电 压。