Power Quality Detection System Based On Wireless Sensor Network Research

With the continuous development of science and technology, as a green energy electricity more and more widespread concern, whether it is industrial and mining enterprises or residents' daily lives are inseparable from power. Therefore, the extent of a country's electricity has also become one of the judges an important indicator of its overall national strength and level of development. And with the power electronics technology continues to mature. On one hand, some high-power, non-linear electrical devices continue to enter the grid to use power quality is deteriorating; the other hand, with the extensive application of digital technology, more and more high-precision power electronic devices on the grid electricity the sensitivity of the quality increases. Therefore, the improvement of power quality monitoring system to establish the optimization of design and testing equipment, to ensure a reasonable and healthy development of the power industry are an important way.The first domestic and international power quality detection system research, through research:With China put forward the slogan of the smart grid and every village project implementation, whether it is the power grid tower erected on high mountains or deep valleys or high desert could be seen, but taking into account the geographical environment factors, difficult to achieve real-time online monitoring, wireless sensor network solution to the problems of the wired network, it allows the flexibility of monitoring points greatly increased, justwireless sensor nodes can be placed in a reasonable position of the power detection area, eliminating the need for protracted and painstaking cabling link, and save a lot of effort and cost of installation and maintenance.Findings, this paper proposes a power quality detection scheme based on ZigBee technology, making the monitoring center in real time, accurate remote monitoring of power quality indicators for each detection node, provides a strong technical support for smart grid construction. Power quality detection is the classic fast Fourier transform algorithm (FFT), it can accurately draw the technical indicators and stable. The hardware combination of Zigbee wireless sensor network technology and DSP technology to achieve a rational distribution of the test node to reach the goal of saving resources and comprehensive monitoring of the design concept. DSP technology makes real-time detection of a strong protection; precision, rapid A/D analog to digital converter chip applications in the three-phase voltage and current signals sampled and converted to fully improve the accuracy of the signal into speed; phase-locked loop technology to reduce the possibility of leakage of the spectrum to ensure that the FFT transform synchronization requirements. The entire system using the Zigbee+DSP technology to ensure the accuracy of the indicators of power quality detection and real-time. The interactive interface using ARM, well positioned to meet the system's multi-functional design philosophy.