±800kV特高压直流输电换流阀核相试验  

Converter valve phase-check test of±800kV UHVDC transmission project

作　　者：郭绯阳 张涛 吴鑫 李国楷 杨云龙 GUO Feiyang;ZHANG Tao;WU Xin;LI Guokai;YANG Yunlong(He’nan Jiuyu EPRI Electric Power Technology Co.,Ltd,Zhengzhou 450052;He’nan Hezhong Electric Power Technology Co.,Ltd,Zhengzhou 450001)

机构地区：[1]河南九域恩湃电力技术有限公司,郑州450052 [2]河南合众电力技术有限公司,郑州450001

出　　处：《电气技术》2021年第4期63-68,共6页Electrical Engineering

摘　　要：近年来,随着特高压直流工程在远距离大功率输电方面的发展,提高直流输电工程的可靠性成为保证电网安全稳定运行的前提和基础,换流阀低压加压核相试验作为分系统调试项目对检验特高压直流输电工程质量至关重要。本文针对特高压直流工程±800kV换流站第一阶段分系统调试期间的相关内容,详细阐述换流站极I、极II低端换流阀核相试验过程并进行理论分析,通过试验参数计算、试验方案优化及试验波形的分析对比进行说明。另外,优化试验abc三相同步电压获取方式,进一步降低试验误差。最后,提出一种验证触发延迟角的核相方法,为特高压直流输电工程的建设和相关研究提供参考。In recent years,with the gradual development of ultra-high voltage direct current(UHVDC)projects in long-distance and high-power transmission,improving the reliability of DC transmission projects has become a prerequisite and basis for ensuring the safe and stable operation of the power grid.The converter valve low-voltage pressurized checking phase test is used as a sub-system.The commissioning project is very important for testing the quality of UHVDC transmission projects.This article focuses on the relevant content during the first stage of commissioning of the±800kV converter station sub-system of the UHVDC project.This article elaborates the low-pressure pressure test process of the pole I and pole II low-end converter valves of the converter station and conducts theoretical analysis.Parameter calculation,test plan optimization and test waveform analysis and comparison are explained.In addition,the method of obtaining the three-phase synchronous voltage of the test abc is optimized to further reduce the test error.Finally,a checking phase method for verifying the trigger angle is proposed,which has a certain degree of engineering reference value for the construction of UHVDC transmission projects and related research.

关 键 词：±800kV 特高压直流输电 换流阀 核相试验 

分 类 号：TM721.1[电气工程—电力系统及自动化]