摘要
为适应远距离、大容量的输电场景,远海风电直流汇集送出系统应时而生,其发展呈现出新特征、新趋势,给其直流线路继电保护带来严峻挑战。为此,首先明确了远海风电直流汇集送出系统的组网方式,并阐述了新型系统中直流线路继电保护的特殊性。其次,针对故障分析方法、故障识别原理、故障隔离策略等关键问题,对研究成果进行归纳与总结,厘清现有方法在新型系统中的适用范围。最后,展望了上述关键问题的技术发展趋势,为远海风电直流汇集送出系统的直流线路继电保护技术研究提供支撑与参考。
In order to adapt to long-distance and large-capacity transmission scenarios, a system of distant offshore wind DC collection and transmission is proposed, and its development presents new features and trends, bringing serious challenges to its relay protection for DC lines. Firstly, the network configuration of distant offshore wind DC collection and transmission system is clarified, and the special characteristics of relay protection for DC lines in the new system are explained. Secondly, the research results are classified and summarized with regard to the key issues of fault analysis methods, fault identification principles, and fault isolation strategies, and the application scope of existing methods in the new system are clarified. Finally, the technical development trend of the above key issues is foreseen so as to provide support and reference for the research on the relay protection technology for DC lines in the distant offshore wind DC collection and transmission system.
作者
郝治国
谢凡
张雨宁
杨松浩
叶冬萌
梁天宇
HAO Zhiguo;XIE Fan;ZHANG Yuning;YANG Songhao;YE Dongmeng;LIANG Tianyu(State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2023年第1期1-18,共18页
High Voltage Engineering
基金
国家自然科学基金(52007143)。
关键词
海上风电
直流汇集
直流送出
边界特性
继电保护
故障隔离
offshore wind
DC collection
DC transmission
boundary characteristic
relay protection
fault isolation
