锦苏特高压直流输电工程系统试验研究和实践

发布时间：2018-05-20 16:10

本文选题：± + kV直流工程系统试验　；参考：《电网技术》2014年01期

【摘要】：概述了锦屏—苏南(简称锦苏)±800 kV特高压直流输电工程系统试验结果。针对特高压直流主回路46种接线方式进行了研究,确定了系统试验方案分为单换流器、单极、双极和融冰接线方式4部分内容,编制了系统试验方案;针对锦苏送端锦屏侧孤岛运行方式进行了研究,解决了孤岛方式试验过程中发生的频率振荡问题,完成了孤岛运行方式系统试验;对融冰接线方式系统试验进行了研究,解决了系统试验中融冰方式的技术问题,确定了融冰接线方式系统试验项目,顺利完成了融冰接线方式系统试验;对系统试验过程中发现的主要技术问题进行了分析,内容包括:苏州站极I控单元跳闸试验,造成锦屏站中性母线避雷器损坏问题的分析;锦屏站极II高端换流器跳闸闭锁后,低端换流发生跳闸问题分析;锦屏站交流滤波器频繁投切问题分析;苏州站5 612滤波器断路器C相损坏事件分析等。这些问题的解决保证了锦苏特高压直流输电工程系统调试的顺利进行和按期投入运行。
[Abstract]:The test results of Jinping-Sunan 卤800 kV UHV HVDC transmission system are summarized. In this paper, 46 connection modes of UHV DC main circuit are studied. The system test scheme is divided into four parts: single converter, unipole, bipolar and ice-melting connection mode, and the system test scheme is worked out. In this paper, the operation mode of Jinsu terminal is studied, the frequency oscillation in the process of islanding mode test is solved, the system test of islanding operation mode is completed, and the system test of ice-melting connection mode is studied. The technical problem of ice-melting mode in system test is solved, the project of thawing connection mode system test is determined, the system test of ice-melting connection mode is successfully completed, and the main technical problems found in the course of system test are analyzed. The contents include: the tripping test of pole I control unit in Suzhou station, the analysis of the damage of neutral busbar arrester in Jinping station, the analysis of tripping at low end after the tripping of high end converter of pole II of Jinping station; Analysis of frequent switching problem of AC filter in Jinping station, and analysis of C phase damage event of filter breaker in Suzhou Station. These problems are solved to ensure the smooth commissioning and scheduled operation of Jinsuet HVDC transmission system.
【作者单位】：中国电力科学研究院;
【分类号】：TM721.1

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