论文部分内容阅读
为了有效降低广域测量系统(WAMS)主站与相量测量装置(PMU)子站之间实时数据的传输频率,同时又不影响WAMS基于PMU实时数据的各类高级应用,提出了一种实现PMU实时数据“三段式变频传输”方法。对PMU数据的应用现状和应用场景进行了分析总结,在此基础上提出了PMU实时数据的“三段式变频传输”方法,将PMU实时数据分为A,B,C三段,在电网正常运行时,PMU子站以较低传输频率传输PMU实时数据,当PMU子站在检测到电网发生扰动时,PMU子站立即以较高传输频率先传输缓冲区内的A段数据,然后再继续以较高传输频率传输扰动过程中的B段实时数据,直至扰动消失后,再将传输频率降低,传输C段实时数据。通过对现行的PMU通信规约进行扩展,实现了与现有通信规约兼容的PMU实时数据“三段式变频传输”方法。最后,通过仿真验证了该方法的可行性及效果。
In order to effectively reduce the transmission frequency of real-time data between WAMS master stations and PMU substations without affecting WAMS’s various advanced applications based on PMU real-time data, an implementation is proposed PMU real-time data “three-stage variable frequency transmission ” method. The application status and application scenarios of PMU data are analyzed and summarized. Based on this, PMU real-time data “three-stage variable frequency transmission ” method is proposed. PMU real-time data is divided into three sections A, PMU sub-station transmits PMU real-time data with lower transmission frequency during normal operation of the power grid. When the PMU sub-station detects the disturbance of the power grid, the PMU sub-station first transmits the A-segment data in the buffer at a higher transmission frequency and then Then continue to transmit the real-time data of section B in the disturbance process at a higher transmission frequency until the disturbance disappears, then reduce the transmission frequency and transmit the real-time data in section C. By extending the existing PMU communication protocol, real-time data of PMU “three-segment frequency conversion ” is compatible with the existing communication protocol. Finally, the feasibility and effectiveness of this method are verified by simulation.