ICS 29.240.10 CCS F 23 备案号：53939-2016 准 T / CEC 298—2020 高压直流输电换流阀年度检修 化学检查导则 Directive of chemistry check- up for annual maintenance in HVDC converter valves 2020-06-30 发布 2020-10-01 实施 中国电力企业联合会 发 布 全国团体标准信息平台 T / CEC 298—2020 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 总 则 ······························································································································· ······························· 2 5 检查准备工作 ······························································································································· ··············· 2 6 换流阀塔检查 ······························································································································· ··············· 2 7 阀冷室检查 ······························································································································· ··················· 3 8 空气冷却器检查 ······························································································································· ··········· 4 9 外冷却水系统检查 ······························································································································· ······· 4 10 阀厅空气调节及净化处理系统检查 ········································································································· 4 附录 A（资料性） 换流阀年度检修化学检查报告模板 ················································································ 5 附录 B（资料性） 换流阀年度检修化学检查工器具及记录表 ····································································· 7 全国团体标准信息平台 T / CEC 298—2020 II 前 言 本文件按照 GB/T 1.1—2020 《标准化工作导则 第 1部分：标准化文件的结构和起草规则》给出 的规则制定。 请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别这些专利的责任。 本文件由中国电力企业联合会提出并归口。 本文件主要起草单位：云南电网有限责任公司电力科学研究院、国网陕西省电力公司电力科学研 究院、云南电力技术有限责任公司、国网冀北电力有限公司电力科学研究院。 本文件参与起草单位：国网陕西省电力公司、国网新疆电力有限公司电力科学研究院、国网陕西 省电力公司检修公司、国网四川省电力公司电力科学研究院、国网河南省电力公司直流管理处、国网上海市电力公司电力科学研究院、国网湖北省电力有限公司电力科学研究院、国网湖南省电力有限公司电力科学研究院、江西问天科技有限责任公司、漂莱特（中国）有限公司。 本文件主要起草人：郭新良、丁德、詹约章、李志成、吴跃伟、赵勤虎、刘磊、王志高、姜丹、 左坤、付纪华、任博、薛盘安、吴书亚、宋玉锋、徐松、杨宇玲、靳海路、赵军、田昊洋、杨定乾、王洁、周利兵、徐磊、孙杰。 本文件为首次发布。 本文件在执行过程中的意见或建议反馈至中国电力企业联合会标准化管理中心（北京市白广路二 条一号， 100761）。 全国团体标准信息平台 T / CEC 298—2020 1 高压直流输电换流阀年度检修化学检查导则 1 范 围 本文件规定了高压直流输电换流阀年度检修化学检查的内容、方法。 本文件适用于高压直流输电换流阀年度检修化学检查。 2 规范性引用文件 下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文 件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用于本文件。 GB/T 23942 化学试剂 电感耦合等离子体原子发射光谱法通则 DL/T 519 发电厂水处理用离子交换树脂验收标准 DL/T 673 火力发电厂水处理用 001×7强酸性离子交换树脂报废标准 DL/T 794 火力发电厂锅炉化学清洗导则 DL/T 1151.22 火力发电厂垢和腐蚀产物分析方法 第 22部分： X-射线荧光光谱和 X-射线衍射分析 3 术语和定义 下列术语和定义适用于本文件。 3.1 均压电极 grading electrode 阀塔中均衡冷却水管内外壁电位差、均衡水路首尾金属电位差，转移泄漏电流的惰性金属构件。 3.2 换流阀冷却系统 valve cooling system 使用去离子水和空气作为冷却介质，对换流阀电气设备进行冷却散热的循环系统，包括内冷却水 系统、外冷却水系统或空气冷却器、阀厅空气调节及净化处理系统。 3.3 阀厅空气调节及净化处理系统 valve hall air condit ioning and purificatio n treatment system 对阀厅空气进行过滤除尘及温、湿度调节的循环系统。 3.4 内冷却水系统 inside cooling water system 使用去离子水作为冷却介质，对换流阀电气设备进行冷却散热的闭式循环水系统。 3.5 内冷却水处理系统 inside cooling water treatment system 对内冷却水中的胶体、盐分、颗粒物等杂质进行去除的水处理系统。 3.6 外冷却水系统 outside cooling water system 对内冷却水进行冷却的循环水系统。 3.7 外冷却水处理系统 out cooling water treatment system 对外冷却水及其补充水中的胶体、颗粒物、硬度、盐分等进行去除的水处理系统。 全国团体标准信息平台 中国电力企业联合会标准 高压直流输电换流阀年度检修 化学检查导则 T