Power Quality Monitoring Network Endpoints Prototype

With the advancement of science and technology and the development of economy,electric power quality has captured increasing attention in power engineering in the recent years. Therefore,there is an imminent need for an appropriate power quality measurement system that can be used to perform quick an reliable power quality supervisory. Power quality network monitoring devices are installed in either the power grids or at customer end to monitor the system's real-times power quality. Based on those measured data,the power quality in the power system can be analyzed and thus controlled more efficiently,precisely and systematically.This paper discusses the techniques to develop power quality network monitoring devices by using the technologies in DSP. By combining the latest breakthroughs in DSP and PC,the proposed power quality network monitoring device in this paper is capable of major functions provided by conventional power quality monitoring device,such as frequency analysis. It also provides an option to record the waveforms of the inputs. Besides,in order to conform to the new standards in power quality monitoring network,the proposed device also provides direct data transfer over the internet by adopting the latest technologies in embedded system. The device on function as an independent node in the whole power quality monitoring network. The TCP/IP protocol is used in the developed device as its network interface. All these characteristics simplifies the data handling for the power quality monitoring network server installed in the power grids. We also introduce a new format for power quality and quantity data interchange(PQDIF),It offers a solution to the problem of different power quality file formats.