Abstract

With the rapid development of ultra-high voltage direct current (U-HVDC) transmission systems, the security and stability control system (SSCS) plays an increasingly important role in ensuring the reliable operation of the power grid as the second line of defense for power system protection. To analyze the impact of SSCS overall architecture on the system reliability, firstly, a reliability analysis method for the SSCS is proposed to correlate the hardware, software and communication channel of the U-HVDC's SSCS under different U-HVDC's SSCS operation modes by establishing a fault tree model of the SSCS. Secondly, the sequential Monte Carlo method is employed to analyze the reliability of the U-HVDC's SSCC model considering the failure rate and maintenance time for each part of the SSCS. The proposed fault tree model and reliability analysis method is used to simulate a real case of the U-HVDC's SSCS commissioned in China. The result compares the reliability of the system architecture under different operation modes and provides significant insights on the selection rules of the U-HVDC's SSCS operation mode for system reliability improvement.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.