By reviewing the application status of traditional clock synchronization methods and architectures under different protocols in a comparative way in China, this paper analyzes the application of IEEE1588 protocol in power dispatching automation and puts forward new clock synchronizing schemes in electricity dispatching communication network based on IEEE1588 protocol (or Std. IEC61588) and proposes some futuristic research fields referring to IEEE1588 protocol in power dispatching automation. New schemes have better clock synchronizing precision, featuring in low implementation cost compared with other clock synchronization schemes. At the same time, it will effectively lower system resource requirements, relieve current excessive reliance on GPS clock source, mitigate data fetching and exchange congestion. It will shed light on building domestic power dispatching networks under the PTP protocol as well as constructing smarter power grid both at home and abroad in the future. This work is supported by North China Electric Power University, Sifang & Huaneng Power System Control Co., Ltd and Zhuhai Power Electricity Supply Company in SMART SYNCHRONOUS DEVICE RESEARCH BASED ON IEC61850 AND IEEE 1588 project, which involves a wholesale research in clock synchronization of power dispatching communication networks and developed China’s first set of smart clock synchronization devices, including the clock synchronization handler CSE6000 (briefly introduced in part v) and corresponding kilomega Ethernet switch. Our research results have reached the advanced level at home, and we are applying for a patent protection accordingly.
Discussion on application status and development trend of electric power dispatching automation system
