DL ICS 29.240.99 CCS K44 柔性低频交流输电用交交换流器技术导则 Technical guidelines for AC -AC converters of flexible low -frequency AC transmission 2026 -06-18实施 2025 -12-18发布 国家能源局 发布 中华人民共和国电力行业标准 DL/T 2990—2025 DL/T 2990—2025 I 目 次 前言 ................................ ................................ ................................ ................................ ................................ ............. II 1 范围 ................................ ................................ ................................ ................................ ................................ ....................... 1 2 规范性引用文件 ................................ ................................ ................................ ................................ ............................... 1 3 术语和定义 ................................ ................................ ................................ ................................ ................................ ........ 1 4 组成与电气结构 ................................ ................................ ................................ ................................ ............................... 2 4.1 组成 ................................ ................................ ................................ ................................ ................................ ............. 2 4.2 电气结构 ................................ ................................ ................................ ................................ ................................ ... 2 5 基本参数 ................................ ................................ ................................ ................................ ................................ ............. 3 5.1 低频交流额定频率 ................................ ................................ ................................ ................................ ................ 3 5.2 低频交流额定电压 ................................ ................................ ................................ ................................ ................ 3 5.3 额定容量 ................................ ................................ ................................ ................................ ................................ ... 3 6 技术要求 ................................ ................................ ................................ ................................ ................................ ............. 3 6.1 环境条件 ................................ ................................ ................................ ................................ ................................ ... 3 6.2 交交换流阀 ................................ ................................ ................................ ................................ .............................. 3 6.3 桥臂电抗器 ................................ ................................ ................................ ................................ .............................. 5 6.4 联接变压器 ................................ ................................ ................................ ................................ .............................. 5 6.5 低频交流变压器 ................................ ................................ ................................ ................................ ..................... 5 6.6 阀基控制设备（ VBC） ................................ ................................ ................................ ................................ ...... 5 6.7 阀冷却系统 ................................ ................................ ................................ ................................ .............................. 5 6.8 损耗 ................................ ................................ ................................ ................................ ................................ ............. 6 6.9 防火防爆 ................................ ................................ ................................ ........