TCEC1662018中压直流配电网典型网架结构及供电方案技术导则50

ICS29.240.01F21备案号：53939-2016准T/CEC166—2018中压直流配电网典型网架结构及供电方案技术导则GuidelinesfortypicalconfigurationandpowersupplyschemesofmiddleVoltageDCdistributionnetwork2018-01-24发布2018-04-01实施中国电力企业联合会发布中国电力企业联合会标准中压直流配电网典型网架结构及供电方案技术导则T/CEC166—2018*中国电力出版社出版、发行（北京市东城区北京站西街19号100005）北京传奇佳彩印刷有限公司印刷*2018年7月第一版2018年7月北京第一次印刷880毫米×1230毫米16开本0.75印张16千字*统一书号155198·901定价11.00元版权专有侵权必究本书如有印装质量问题，我社发行部负责退换T/CEC166—2018T/CEC166—2018I目次前言···································································································································································II1范围······························································································································································12规范性引用文件··········································································································································13术语和定义··················································································································································14一般要求······················································································································································25典型网架结构··············································································································································25.1单端单路辐射状结构··································································································································25.2单端双路辐射状结构··································································································································25.3单端环状结构············································································································································35.4双端结构··················································································································································35.5多端树枝状结构········································································································································45.6多端环状结构············································································································································46供电方案技术要求与典型供电方案···········································································································56.1电压等级的确定········································································································································56.2网架结构的选择········································································································································56.3直流配电一次设备的选型···························································································································56.4直流配电的保护与自动化···························································································································66.5典型场景下的中压直流配电供电方案··········································································································6附录A（资料性附录）供电区域···················································································································7T/CEC166—2018II前言本标准按照GB/T1.1—2009《标准化工作导则第1部分：标准的结构和编写》给出的规则起草。请注意本标准的某些内容可能涉及专利。本标准的发布机构不承担识别这些专利的责任。本标准由中国电力企业联合会提出并归口。本标准起草单位：中国电力科学研究院有限公司、国网江苏省电力有限公司（常州供电分公司、电力科学研究院）、国网经济技术研究院有限公司、国网湖北省电力有限公司（经济技术研究院）、国网内蒙古东部电力有限公司、南瑞集团有限公司（中电普瑞科技有限公司）、国网山东省电力有限公司（泰安供电分公司）、西安交通大学、北京交通大学。本标准主要起草人：盛万兴、张海、李蕊、侯义明、吴鸣、孙丽敬、刘海涛、季宇、杨晓梅、蔡杰、徐政、张伟、罗国敏、焦在滨、陈亮、姜世公、熊雄、王轩、徐大鹏、李强、刘国明。本标准为首次发布。本标准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）。T/CEC166—20181中压直流配电网典型网架结构及供电方案技术导则1范围本标准提出了中压直流配电网的典型网架结构及中压直流配电供电方案的技术要求。本标准适用于±1.5kV～±50kV直流配电系统的规划、设计、建设及运行。2规范性引用文件下列文件中对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是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/T2900.50电工术语发电、输电及配电通用术语GB/T14285继电保护和安全自动装置技术规程DL/T5729—2016配电网规划设计技术导则T/CEC107直流配电电压Q/GDW10370—2016配电网技术导则3术语和定义下列术语和定义适用于本文件。3.1直流配电DCdistribution配电网中采用直流向用户分配电能的形式。3.2中压直流配电网DCdistributionnetwork直流电压范围在±1.5kV～±50kV之间的，从电源侧（输电网、发电设施、分布式电源等）接受电能，并通过配电设施采用直流就地或逐级向各类用户分配电能的网络。3.3典型网架结构typicalgridconfiguration具备代表性且在一定情况下可复制应用的电网拓扑及主设备配置方式。3.4电源端powersourceport由电源或大系统联结的、供电稳定且具有系统电压支撑能力的母线节点，简称为端。3.5直流母线DCbusline用高导电率的铜（铜排）、铝质材料制成的，配置于变电站或变电站用以传输直流电能的，具有汇集和分配直流电力功能的裸导线或绞线。3.6N－1准则N－1principle指电力系统的N个元件中的任一独立元件发生故障而被切除后，应不造成因其他线路过负荷跳闸而导致用户停电，不破坏系统的稳定性，不出现电压崩溃等事故。其中所谓元件，在交流系统中指发电机、输电线路、变压器等交流电力设备与设施，在直流系统中指电源端的AC/DC换流器或DC/DCT/CEC166—20182换流器、直流线路等直流电流设备与设施。4一般要求4.1中压直流配电网的网架结构应具备供电可靠性、安全性、灵活性、经济性和适用性。4.2中压直流配电网的网架结构应具有适当的负荷转移能力、合理的分布式电源接纳能力，高可靠性供电区域的网架结构，还应具有一定的网络重构能力和自愈能力。4.3中压直流配电网供电方案的确定应遵循差异化原则。根据不同供电区域内电源及负荷分布特点、经济社会发展水平和用户性质等情况，通过技术经济比选最终确定供电方案。4.4中压直流配电网供电方案的确定应满足分布式电源、储能设备、电动汽车充电站等直流电源与直流负荷的接入需求。4.5中压直流配电网供电方案的设备选型应与现有直流设备的制造能力与直流配电技术发展水平相适应。4.6中压直流配电网的建设初期及过渡期，可根据区域供电安全水平要求，综合考虑区域负荷与分布式电源的发展和目标网架规划情况，合理选择过渡网架结构、接线方式及扩展方式。5典型网架结构5.1单端单路辐射状结构5.1.1单端单路辐射状拓扑示意结构如图1所示。注1：电源端直流母线位于电源侧，上级电网/电源通过对应接口装置与其连接，所连上级电网/电源既可以是交流也可以是直流，或两种形式并存。注2：图中单纯