CAJ | 학술논문

现时高压直流输电线路保护广泛采用ABB或西门子保护方案和配置。通过对ABB和西门子行波保护动作特性仿真结果分析及运行经验表明，二者保护方案无法可靠、灵敏地切除高阻接地故障，且易受噪声等外界信号干扰。同时，对国内外直流线路暂态保护的新思想进行分析总结，提出了提高高压直流输电线路暂态保护抗过渡电阻能力及区内、区外故障暂态分析所必须解决的几个关键性问题，为日后高品质直流线路保护判据的提出提供研究方向。
현시고압직류수전선로보호엄범채용ABB혹서문자보호방안화배치。통과대ABB화서문자행파보호동작특성방진결과분석급운행경험표명，이자보호방안무법가고、령민지절제고조접지고장，차역수조성등외계신호간우。동시，대국내외직류선로잠태보호적신사상진행분석총결，제출료제고고압직류수전선로잠태보호항과도전조능력급구내、구외고장잠태분석소필수해결적궤개관건성문제，위일후고품질직류선로보호판거적제출제공연구방향。
Nowadays, most HVDC transmission lines use the protections developed by ABB or Siemens Company. The two traveling wave protections are simulated and their merits and drawbacks are summarized, which show that these protection schemes can not reliably and sensitively cut out the high impedance ground fault and be vulnerable to external noises interference. At the same time some new ideas about the transient protection of the DC line are introduced; at last several key issues that could advance the reliability and sensitivity of the transient protection for HVDC transmission line are proposed, which will provide a theoretical basis for raising high-quality DC line protection criteria.