±1100kV特高压直流工程简化直流滤波器研究  

Research of ±1100kV UHVDC Project Simplified DC Filter

作　　者：刘泽洪[1] 余军[1] 郭贤珊[1] 付颖[1] 季一鸣[2] 刘杰[1] 

机构地区：[1]国家电网公司,北京市西城区100031 [2]国网北京经济技术研究院,北京市昌平区102211

出　　处：《中国电机工程学报》2017年第21期6347-6352,共6页Proceedings of the CSEE

摘　　要：通信光缆的广泛应用显著提升通信系统抗干扰能力,直流输电工程具备简化直流滤波器设计、提高干扰限值的技术条件。±1100kV工程直流滤波器体积庞大,研制难度大,且严重影响户内直流场的技术方案,有必要进行简化。该文研究突破直流工程通信干扰限值要求,开展直流滤波器简化设计的原则和步骤;提出简化直流滤波器必须保留的谐振支路,确定简化滤波器的基本形式。计算比选主电容取值、并联谐振频率、滤波器电阻取值、滤波器电阻接线形式对直流侧运行电压峰值的影响,提出世界首个±1100kV直流工程简化直流滤波器技术方案,降低直流滤波器主电容值及滤波器塔的体积和占地,同时还可以降低设备研制难度、节约工程投资。The wide application of communication optical cable can significantly improve the anti-interference ability of the communication system, and the DC transmission project has the technical conditions to simplify the design of direct current filter （DCF） and improve the interference limit value.±1100kV UHVDC project DCF is huge and difficult to develop, which will seriously affect the technical scheme of the indoor DC Yard, and it is necessary to simplify the design. Simplified DCF design principle and step were proposed. The basic form of simplified filter was determined with the minimum resonant branch which is necessary. Based on ±1100kV project, to limit crest value of continuous operating voltage （CCOV） of the DC circuit, the main capacitor, parallel resonant frequency, filter resistance value, filter resistance connection form were optimized. The simplified DC filter technique program was put forward for the world＇s first ±1100kV UHVD project, which reduces the main capacitance value of the DC filter, reduces the volume and occupation of the filter tower, reduces the difficulty of the equipment development, and saves the investment of the project.

关 键 词：±1100kV特高压直流工程 简化直流滤波器 通信干扰 运行电压峰值 

分 类 号：TM85[电气工程—高电压与绝缘技术]