Institute of Standard Metrology, China Academy of Railway Sciences Corporation Limited、School of Electric Engineering, Southwest Jiaotong University 在知网中查找 在百度中查找 在本站中查找
Traveling wave protection is an important part of HVDC transmission line protection system. In order to analyze the reasons for the lack of reliability of Siemens traveling wave protection in existing projects, based on traveling wave protection logic used in practical projects, a Siemens traveling wave protection model considering signal broadening is established. On this basis, the adaptability of Siemens traveling wave protection under different types of internal and external grounding faults is analyzed, and the reasons for the lack of adaptability are analyzed. The simulation results show that the signal broadening improves the reliability of Siemens traveling wave protection to a certain extent, but the voltage variation criterion in the protection criterion greatly affects its selectivity for high resistance faults in the area and low resistance faults outside the area.
戴文睿,李小鹏,林圣.考虑信号展宽的西门子行波保护适应性分析[J].四川电力技术,2021,44(5):2-5. Dai Wenrui, Li Xiaopeng, Lin Sheng. Adaptability Analysis of Siemens Traveling Wave Protection Considering Signal Broadening[J]. SICHUAN ELECTRIC POWER TECHNOLOGY,2021,44(5):2-5.