CAJ | 학술논문

中国的能源分布和电网结构决定了高压直流输电具有广阔的应用前景。直流输电线路长、故障率高，其继电保护技术性能关系到直流输电系统的安全性和故障恢复速度。目前，运行中的直流输电线路保护方案及装置部分是由ABB或SIEMENS公司提供。工程应用中的直流线路保护存在理论不完备、可靠性差等缺点，线路故障由直流控制系统响应动作，造成直流闭锁而被迫停运的事故时有发生。文中在综述国内外直流线路保护技术与研究现状的基础上，分类对直流输电线路保护原理的优缺点进行了评述。最后，针对现有保护原理上的不足，提出了直流输电线路保护研究的几点建议与设想，并探讨了进一步的研究方向。
중국적능원분포화전망결구결정료고압직류수전구유엄활적응용전경。직류수전선로장、고장솔고，기계전보호기술성능관계도직류수전계통적안전성화고장회복속도。목전，운행중적직류수전선로보호방안급장치부분시유ABB혹SIEMENS공사제공。공정응용중적직류선로보호존재이론불완비、가고성차등결점，선로고장유직류공제계통향응동작，조성직류폐쇄이피박정운적사고시유발생。문중재종술국내외직류선로보호기술여연구현상적기출상，분류대직류수전선로보호원리적우결점진행료평술。최후，침대현유보호원리상적불족，제출료직류수전선로보호연구적궤점건의여설상，병탐토료진일보적연구방향。
High voltage direct current (HVDC) has broad application prospects resulting from energy distribution and network structure in China. The HVDC transmission line is long, and the failure rate is high. Thus the relay performance is of vital* importance to the HVDC transmission system security and fault recovery. At present, the operation of the HVDC transmission line protection system and devices are generally provided by ABB or SIEMENS. In engineering application, the HVDC line protection theory is not complete, and the reliability inadequate. As line fault is responded by the DC control system, DC blocking and unnecessary downtime occur more often than not. Based on the state of the art of the protection principle of the classified study, the advantages and disadvantages of principles of protection are reviewed. Finally, several important problems for further study are suggested.