适用于柔性直流电网的500 kV级直流电缆与架空线路并联运行控制及保护策略

doi:10.12204/j.issn.1000-7229.2022.07.009

电力建设 ›› 2022, Vol. 43 ›› Issue (7): 80-86.doi: 10.12204/j.issn.1000-7229.2022.07.009

适用于柔性直流电网的500 kV级直流电缆与架空线路并联运行控制及保护策略

钟启迪¹(), 蒲莹¹, 孙建锋², 姜崇学³, 李探¹, 赵鹏⁴, 周扬²

1.国网经济技术研究院有限公司, 北京市 102209
2.国家电网有限公司,北京市 100031
3.南京南瑞继保电气有限公司,南京市 211102
4.中国电力科学研究院有限公司,武汉市 430074

收稿日期:2022-03-10 出版日期:2022-07-01 发布日期:2022-06-30
通讯作者: 钟启迪 E-mail:zhongqidi421@126.com
作者简介:蒲莹(1973),女,博士,教授级高级工程师,主要研究方向为高压直流和柔性直流控制保护系统设计;
孙建锋(1979),男,硕士, 高级工程师,主要研究方向为电力系统自动化;
姜崇学(1987),男,硕士,高级工程师,主要研究方向为直流输电控制保护;
李探(1989),男,博士,高级工程师,主要研究方向为柔性直流输电成套设计;
赵鹏(1993),男,硕士,工程师,主要研究方向为电力电缆运行和绝缘;
周扬(1988),男,硕士,高级工程师,主要研究方向为柔性直流及直流电网技术。
基金资助:
国家重点研发计划项目“柔性直流工程成套设计与系统集成及其工程示范应用”(2016YFB0900905)

Operation Control and Protection Strategy of Domestic 500 kV DC Cable in Flexible DC Grid

ZHONG Qidi¹(), PU Ying¹, SUN Jianfeng², JIANG Chongxue³, LI Tan¹, ZHAO Peng⁴, ZHOU Yang²

1. State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102209, China
2. State Grid Corporation of China,Beijing 100031,China
3. NR Electric Co., Ltd., Nanjing 211102, China
4. China Electric Power Research Institute, Wuhan 430074,China

Received:2022-03-10 Online:2022-07-01 Published:2022-06-30
Contact: ZHONG Qidi E-mail:zhongqidi421@126.com
Supported by:
National Key R&D Program of China(2016YFB0900905)

摘要/Abstract

摘要：

高压直流电缆是跨海长距离输电和新能源并网的重要装备,高电压等级、高通流能力的直流电缆还处于研发阶段。为推进高压直流电缆研发,考验长期运行性能,依托国内某±500 kV柔性直流电网工程建立了直流电缆综合试验站。该柔性直流工程线路主要采用架空线,试验站位于其中一个换流站单极出线处,采用直流电缆与架空线路并联运行方式,其运行控制和保护配合复杂、可靠性要求极高,尚无工程经验可循。针对500 kV级直流电缆试验段与架空线路并联切换运行的接线方式,提出了试验站直流电缆监视和投入退出控制策略、故障保护策略以及过负荷运行控制保护策略。仿真试验结果证明,所提策略可保证直流电缆接入柔性直流电网后可靠运行。

关键词: 柔性直流电网, 高压直流电缆, 国产化, 保护策略, 运行控制

Abstract:

High-voltage DC cables are important equipment for cross-sea long-distance power transmission and new energy grid integration. DC cables with high voltage levels and current capacity are still in the research and development stage.In order to promote the research and development of high-voltage DC cables and test the long-term operation performance, this paper relies on a domestic ±500 kV flexible dc grid project to establish a DC cable comprehensive test station.The DC line of the domestic ±500 kV flexible dc grid project mainly adopts the overhead transmission line scheme. The test station is located at the single-pole outlet of one of the converter stations, and the trial DC cable runs in parallel with the overhead line.The operation control and protection coordination are complex, the reliability requirements are extremely high, and there is no engineering experience to follow.In this paper, aiming at the connection mode of parallel switching operation between 500k V DC cable test section and overhead line, the DC cable monitoring and input and exit control strategy, fault protection strategy and overload operation control protection strategy in the test station are proposed for the first time, and are verified by simulation experiments, it can realize reliable operation of DC cable access to flexible DC grid.

Key words: flexible DC grid, high-voltage DC cable, localization, protection strategy, operation control

中图分类号:

TM247

钟启迪, 蒲莹, 孙建锋, 姜崇学, 李探, 赵鹏, 周扬. 适用于柔性直流电网的500 kV级直流电缆与架空线路并联运行控制及保护策略[J]. 电力建设, 2022, 43(7): 80-86.

ZHONG Qidi, PU Ying, SUN Jianfeng, JIANG Chongxue, LI Tan, ZHAO Peng, ZHOU Yang. Operation Control and Protection Strategy of Domestic 500 kV DC Cable in Flexible DC Grid[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(7): 80-86.

图/表 8

图1 试验电缆在依托柔性直流电网工程中的位置示意图

Fig.1 Schematic diagram of the location of test cable in the flexible DC grid

图2 直流电缆接线示意图

Fig.2 Schematic diagram of DC cable wiring

图3 直流电缆差动保护配置及故障点示意图

Fig.3 Diagram of configuration of DC cable differential protection and failure points

表1 直流电缆差动保护定值

Table 1 Setting values of DC cable differential protection

图4 有无电缆对F2(直流线路换流站Ⅰ侧)故障特性的影响

Fig.4 Influence on the fault characteristics of F2 with or without DC cable (StationⅠside)

图5 有无电缆对F4(直流线路中点)故障特性的影响

Fig.5 Influence on the fault characteristics of F4 with or without DC cable(midpoint of DC line)

图6 有无电缆对F3(直流线路换流站Ⅱ侧)故障特性的影响

Fig.6 Influence on the fault characteristics of F3 with or without DC cable (StationⅡside)

图7 直流电缆载流量控制示意图

Fig.7 Diagram of DC cable current carrying control

参考文献 22

[1]	邵森安, 马勰, 丰如男, 等. 电力电缆国内外研究综述[J]. 电线电缆, 2021(3): 1-6, 10.
	SHAO Senan, MA Xie, FENG Runan, et al. Review of researches on power cables at home and abroad[J]. Wire & Cable, 2021(3): 1-6, 10.
[2]	马人凤, 朱永华, 吴建东, 等. 超高压直流电缆的国产化研究进展[J]. 绝缘材料, 2016, 49(11): 1-8.
	MA Renfeng, ZHU Yonghua, WU Jiandong, et al. Localization research progress of ultra-high voltage direct current cable[J]. Insulating Materials, 2016, 49(11): 1-8.
[3]	张翀, 查俊伟, 王思蛟, 等. 高压直流电缆绝缘材料的发展与展望[J]. 绝缘材料, 2016, 49(2): 1-9.
	ZHANG Chong, ZHA Junwei, WANG Sijiao, et al. Development and outlook of insulating materials for high voltage direct current cables[J]. Insulating Materials, 2016, 49(2): 1-9.
[4]	国内首条应用国产绝缘材料的220 kV高压电缆投运[J]. 电力安全技术, 2021, 23(4): 4.
[5]	欧阳本红, 刘松华, 王诗航, 等. 高压交流电缆用交联聚乙烯绝缘料性能对比实验研究[J]. 中国电力, 2021, 54(4): 87-93.
	OUYANG Benhong, LIU Songhua, WANG Shihang, et al. Comparative experimental study of performance of crosslinked polyethylene insulation materials used for HVAC cables[J]. Electric Power, 2021, 54(4): 87-93.
[6]	郭贤珊, 周杨, 梅念, 等. 张北柔直电网的构建与特性分析[J]. 电网技术, 2018, 42(11): 3698-3707.
	GUO Xianshan, ZHOU Yang, MEI Nian, et al. Construction and characteristic analysis of Zhangbei flexible DC grid[J]. Power System Technology, 2018, 42(11): 3698-3707.
[7]	贾敬礼, 董显. 国产500 kV交联聚乙烯高压电缆运行维护探讨[J]. 水力发电, 2014, 40(10): 29-31, 51.
	JIA Jingli, DONG Xian. Discussion on the operation and maintenance of domestic 500 kV high-voltage XLPE cable[J]. Water Power, 2014, 40(10): 29-31, 51.
[8]	曾鑫辉, 谭建成. 柔性直流输电线路故障分析与保护综述[J]. 浙江电力, 2019, 38(6): 21-28.
	ZENG Xinhui, TAN Jiancheng. Fault analysis and protection of VSC-HVDC line[J]. Zhejiang Electric Power, 2019, 38(6): 21-28.
[9]	韩昆仑. 高压直流输电系统换流器与线路保护动态特性分析与整定研究[D]. 广州: 华南理工大学, 2013.
	HAN Kunlun. Research on dynamic characteristic and protection setting of HVDC converter and line protection[D]. Guangzhou: South China University of Technology, 2013
[10]	田庆. 高压直流线路两种类型接地故障分析[J]. 湖北电力, 2008, 32(1): 37-40.
	TIAN Qing. Analysis of the two kinds of HVDC line ground faults[J]. Hubei Electric Power, 2008, 32(1): 37-40.
[11]	余梦琪. 比例制动差动保护在多种量测误差下的误动风险分析及对策研究[D]. 武汉: 华中科技大学, 2017.
	YU Mengqi. Maloperation risk analyses and novel differential protection schemes under the scenario with measurement errors[D]. Wuhan: Huazhong University of Science and Technology, 2017.
[12]	王思华, 赵磊, 王军军, 等. 基于MMC的直流输电系统双极短路故障保护策略研究[J]. 电力系统保护与控制, 2021, 49(11): 9-17.
	WANG Sihua, ZHAO Lei, WANG Junjun, et al. Research on protection strategy of a bipolar short circuit fault in an HVDC transmission system based on MMC[J]. Power System Protection and Control, 2021, 49(11): 9-17.
[13]	赵冠琨. 基于直流断路器的柔性直流输电线路保护技术研究[D]. 北京: 华北电力大学, 2021.
	ZHAO Guankun. Research on protection technology of flexible direct current transmission line based on DC circuit breaker[D]. Beijing: North China Electric Power University, 2021.
[14]	刘瑞华, 陈敏利. 比例制动式差动保护浅析[J]. 机电信息, 2012(27): 15, 17.
[15]	闵睿, 蓝海波, 翟丙旭, 等. 张北柔直电网运行协调控制关键技术及控制策略探讨[J]. 华北电力技术, 2017(11): 44-48.
	MIN Rui, LAN Haibo, ZHAI Bingxu, et al. Key technologies of control and protection and operation coordination control strategy for Zhang Bei VSC-HVDC[J]. North China Electric Power, 2017(11): 44-48.
[16]	杜晓磊, 郭庆雷, 吴延坤, 等. 张北柔性直流电网示范工程控制系统架构及协调控制策略研究[J]. 电力系统保护与控制, 2020, 48(09): 164-173.
	DU Xiaolei, GUO Qinglei, WU Yankun, et al. Research on control system structure and coordination control strategy for Zhangbei demonstration project of MMC-HVDC grid[J]. Power System Protection and Control, 2020, 48(09): 164-173.
[17]	穆凌杰, 岳娜. 张北柔直电网控保系统接口设计及控制保护策略[J]. 电工技术, 2021(21): 105-109.
	MU Lingjie, YUE Na. Interface design and control protection strategy of control and protection system of Zhangbei flexible direct power grid[J]. Electric Engineering, 2021(21): 105-109.
[18]	王馨, 卢毅. 张北柔直输电线路走廊气候特征分析[J]. 电工技术, 2020(23): 74-78.
	WANG Xin, LU Yi. Analysis of climatic characteristics of Zhangbei flexible HVDC transmission line corridor[J]. Electric Engineering, 2020(23): 74-78.
[19]	郝艳捧, 黄吉超, 阳林, 等. 高压直流电缆稳态载流量解析计算方法[J]. 电网技术, 2016, 40(4): 1283-1288.
	HAO Yanpeng, HUANG Jichao, YANG Lin, et al. Analytical calculation method of steady-state current capacity of HVDC cables[J]. Power System Technology, 2016, 40(4): 1283-1288.
[20]	刘佳鑫, 韦德福, 唐红, 等. 高压电缆分布式光纤测温装置性能评估方法研究[J]. 电气应用, 2021, 40(9): 22-29.
	LIU Jiaxin, WEI Defu, TANG Hong, et al. Research on performance evaluation method of distributed optical fiber temperature sensing device for high voltage cable[J]. Electrotechnical Application, 2021, 40(9): 22-29.
[21]	周琦, 胡慧萍. 分布式光纤测温技术在电力电缆运维中的应用[J]. 江苏电机工程, 2013, 32(5): 65-67.
	ZHOU Qi, HU Huiping. Application of distributed temperature sensor system in power cable operation and maintenance[J]. Jiangsu Electrical Engineering, 2013, 32(5): 65-67.
[22]	王月茹. DTS综合智能实时监控技术的研究与应用[J]. 机械管理开发, 2019, 34(12): 270-271.
	WANG Yueru. Research and application of DTS integrated intelligent real-time monitoring technology[J]. Mechanical Management and Development, 2019, 34(12): 270-271.

适用于柔性直流电网的500 kV级直流电缆与架空线路并联运行控制及保护策略

Operation Control and Protection Strategy of Domestic 500 kV DC Cable in Flexible DC Grid

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 8

参考文献 22

相关文章 15

编辑推荐

Metrics

本文评价

[1]	董朝武, 李哲, 蒲莹, 钟启迪, 李明, 郝俊芳. 一种应用于柔性直流输电控制保护系统的波特率动态自适应通信技术[J]. 电力建设, 2022, 43(7): 57-62.
[2]	陈宁，齐磊，崔翔，马江江. 柔性直流电网单极接地短路电流计算方法[J]. 电力建设, 2019, 40(4): 119-127.
[3]	傅庆燕，高亮，裴翔羽. 基于等效行波的柔性直流电网差动保护研究[J]. 电力建设, 2019, 40(3): 109-116.
[4]	丁骁，汤广福，韩民晓，高冲，王高勇. 基于LC电源的混合式高压直流断路器分断试验方法[J]. 电力建设, 2017, 38(8): 2-.
[5]	张峻榤，向往，林卫星，文劲宇. 基于混合型MMC和直流开关的柔性直流电网直流故障保护研究[J]. 电力建设, 2017, 38(8): 52-.
[6]	尹昌新，李蕴，陈平，黄仁乐，常乾坤，周杨. 分区互联装置桥臂闪络故障保护策略设计[J]. 电力建设, 2017, 38(2): 91-.
[7]	徐兵，张岩，田方媛，文福拴，朱炳铨，徐立中. 利用有限相量测量单元的故障识别与广域后备保护策略[J]. 电力建设, 2016, 37(2): 25-33.
[8]	程林，刘琛，康重庆，吴强. 主动配电网关键技术分析与展望[J]. 电力建设, 2015, 36(1): 26-32.
[9]	刘广一，张凯，舒彬. 主动配电网的6个主动与技术实现[J]. 电力建设, 2015, 36(1): 33-37.
[10]	肖国华，刘安勇，李益民，杨百勋. Super304H钢管国产化和质量现状[J]. 电力建设, 2014, 35(1): 84-87.
[11]	肖国华王学民马忠于田晓曹剑锋李益民. 超（超）临界机组四大管道国产化现状和质量概述[J]. 电力建设, 2012, 33(4): 50-53.
[12]	葛莺鏖. EX2000励磁系统国产化改造及应用[J]. 电力建设, 2010, 31(1): 112-115.
[13]	孙竹森,种芝艺, . 三沪直流工程建设创新与实践[J]. 电力建设, 2007, 28(3): 0-0.
[14]	向长征 . 蔡家冲换流站二次系统的设计改进措施和国产化[J]. 电力建设, 2007, 28(3): 0-0.
[15]	梁旭明,丁燕生,陈秀娟 . 750kV交流输变电工程设备的国产化[J]. 电力建设, 2006, 27(8): 1-0.