摘要
依据特高压直流输电的相关理论知识,对锡盟-泰州±800 kV/10000 MW特高压直流工程的主回路参数进行了设计研究,根据计算结果,确定了主要设计参数:锡盟整流站和泰州逆变站设计的额定相对感性压降分别为10.5%和10%,而额定相对阻性压降为0.3%。在完整双极额定运行方式下,整流侧和逆变侧消耗的无功功率分别为5756 MVar和5639 MVar,可为后续的交直流滤波器设计提供参考依据。换流变均采用单相双绕组换流变压器的方案,锡盟站换流变设计容量为509.3 MVA、额定线电压为172.8 kV、分接头档位数为+23/-5,泰州站高端换流变设计容量为488.7 MVA、额定线电压为165.8 kV、分接头档位数为+24/-4,泰州站低端换流变设计容量为488.7 MVA、额定线电压为165.8 kV、分接头档位数为+19/-9。锡盟整流站及泰州逆变站高低端设备选型需要的绝对空载最大直流电压分别为242 kV和234 kV。
Based on the relevant theory of UHVDC power transmission,main circuit parameters of the ±800 kV/10000 MW DC power transmission project from Ximeng to Taizhou was studied and designed. The calculation results determined the main design parameters ： the rated relative inductive voltage drop of Ximeng Rectifier Station and Taizhou Inverter Sta- tion was 10.5% and 10% ,and the rated relative resistance voltage drop was 0.3%. In the complete bipolar operating mode ,the reactive power consumed by the rectifier side and the inverter side was 5756 MVar and 5639 MVar,which could provide reference for the design of AC/DC filter. The converter transformers were composed of single-phase two-winding transformers. At Ximeng side the rated capacity of each single-phase transformer was 509.3 MVA and its rated phase voltage was 172.8 kV,the number of transformer taps was set to ＋ 23/-5; At Taizhou high-end side the rated capacity of each single-phase transformer was 488.7 MVA and its rated phase voltage was 165.8 kV,the number of trans-former taps was set to ＋ 24/- 4; At Taizhou low-end side the rated capacity of each single-phase transformer was 488.7 MVA and its rated phase voltage was 165.8 kV,the number of transformer taps was set to ＋ 19/-9. The absolute maxi-mum no-load DC voltage for equipment selection was 242 kV at Ximeng side, 234 kV at Taizhou high-end side and low-end side.
出处
《能源工程》
2017年第3期27-33,共7页
Energy Engineering
关键词
特高压直流输电
换流变压器
主回路参数
UHVDC power transmission
conveiter transformer
main circuit parameters
