利用卫星时间作基准的电力系统同步相量测量

本文首先对同步相量测量的思想进行阐述，然后给出一种新的同步相量测量方案，该方案将基于ＧＰＳ时间信息的时钟同步技术与离散付氏变换算法相结合，能在统一参考基准下实时测量电力系统各节点的电压电流相量。文章对该方案涉及到的算法、同步采样技术、硬件构成以及可行性等进行了详细描述。     

An adaptive approach for three zone operation of digital distance relay with Static Var Compensator using PMU

Modern energy transmission systems suffer from great voltage dropping due to enormous loads. Therefore appropriate schemes should be devised to regulate the voltage. FACTS devices such as Static Var Compensator are often used for this purpose. However, SVC at mid-point of transmission line may leads to deteriorate of distance relay operation, resulting in inaccurate estimation of faults locations i.e. over-reach or under reach for different cases. This paper proposed a new algorithm that utilizes synchronized phasors measurement (SPM) to enhance the operation of distance protection zone in many aspects. The proposed method is tested for 230 kV system simulated in EMTDC/PSCAD with Bergeron model of transmission line. The results prevailed for adaptive approach scheme are more accurate, victor and robust in equivalence with usable transmission line distance protection with SVC.     

基于IEEE C37．118的同步相量测量系统的实时数据传输

在基于ARM微处理器和DSP的同步相量测量系统研究开发的基础上,进行了同步相量测量装置与服务器间实时数据传输方式的研究。本设计中,同步相量测量装置与服务器间在传输层采用TCP通信,应用层采用IEEEC37．118协议传送实时数据和相量数据。本文为同步相量测量装置和数据中心间实时数据传输提供了解决方案,最后还给出了相关技术关键环节的软件流程。