北斗主导多模系统在广域电能质量与能效分析方面的应用

Applications of Beidou Dominating Multimode System in Wide-Area Power Quality and Energy Efficiency

现代电力系统结构日趋复杂,现代电网的安全性存在新的挑战,电网的广域电能质量实时监控将越来越重要。现阶段电网主要依赖美国的GPS来完成。但GPS的时间同步精度和定位精度受美国限制,因此可靠性低、自主性差。基于安全性考虑,有必要对基于我国北斗卫星导航系统为主,兼容多种导航模式的北斗主导多模系统进行研究。本文详细分析了利用北斗主导多模系统的高精度授时系统如何提高电能质量监测水平和能效分析可靠性,并通过对比仿真实验验证了北斗主导多模系统的可行性。

Modern power system structure is increasingly complicated, and there exists new challenges about the security of modern power grid, so the grid wide-area real-time monitoring of power quality will be more and more important. At the present stage grid mainly depends on the GPS to complete this task. But the GPS time synchronization accuracy and positioning precision is restricted by the United States, so the reliability is low and autonomy is poor. Based on security considerations, it is necessary to study Beidou dominating multimode system in which China’s Beidou satellite navigation system is given priority to and it is compatible with a variety of navigation modes. This report analyzes the application of synchronous phasor measurement unit (PMU) in detail, and verifies that the application of new system can improve the measuring accuracy.