With the rapid development of modern industry, based on the popularization and application of high-power power electronic switchgear, the nonlinear equipment and power load in the power grid have increased greatly, and at the same time, due to the continuous use of electronic devices in order to improve system efficiency, these phenomena Various power quality problems have come to the fore. In particular, the continuous increase of impact and non-linear load capacity causes power quality problems such as waveform distortion and three-phase unbalance in the power grid, which seriously affects the safe operation of power systems and power users. The quality of power quality will directly affect the stability and reliability of the entire system, which has attracted the attention of power workers in various countries. The problems caused by power quality become the same as other environmental problems. The detection and analysis of power quality and quality control are increasingly attracting the attention of power supply companies and power users. The problem of power quality depends on the power supply and power consumption. To improve the power quality level of the power grid, so that users can use high-quality power, and also for the safe operation of power equipment, it must be from the power sector and the vast number of power users connected to the power grid. Joint maintenance. In order to effectively protect the interests of the power sector and users, ensure the safe operation of the power grid, and purify the electrical environment, it is necessary to strengthen the detection and management of the power quality of the power system grid. Power quality has increasingly attracted the attention of power companies and users. How to accurately assess the quality of power and how to reliably detect power quality parameters has become a necessary part of power quality research. Studying power quality and formulating corresponding standards is the basis for assessing power quality and the choice of compensation methods, devices and technical measures for power technicians. At present, there are two major power quality standard systems in the world, namely IEEE standards and IEC standards. Based on these power quality standards, China has developed its own power quality standards based on the national conditions of its own country. China's power quality has five indicators: voltage deviation, frequency deviation, harmonics, voltage fluctuations and flicker, three-phase voltage imbalance, these standards are: "Power Quality Supply Voltage Allowable Deviation" (GB12325) "Power Quality Power System Frequency Allowance Deviation" (GB/T 15945) "Power Quality Utility Grid Harmonics" (GB/T 14549) "Power quality supply voltage allows fluctuating flicker" (GB12326) "Power quality three-phase voltage allowable imbalance" (GB/T 15543) The test applications related to these standards are broad in scope and work methods and test items are also numerous. These tests require certain challenges compared to other automation systems. Power applications determine that it is a high-speed and real-time application. Continuous test analysis and statistics require large data throughput, and as a test analysis device or instrument. High requirements for resolution and accuracy. In order to meet the power quality detection needs, research and development of power quality detection and analysis equipment has been ongoing. Many advanced software and hardware technologies and mathematical simulation methods have been adopted at home and abroad, and many research results and corresponding products have emerged. At present, the methods of power quality research and analysis mainly include: time domain simulation method, frequency domain analysis method and transformation based method; these implementations have embedded systems based on microprocessor development, and also developed based on various high-level programming languages ​​running on computers. Software system. Among them, the embedded power quality online detector is the first choice for online detection of power quality due to its strong anti-interference ability, high precision, low power consumption, small size, maintenance-free, and cost-saving. The data transmission channel transfers the acquired raw data to the computer system, and can perform complex analysis calculations and statistics that require a large amount of storage space and computing power. After analysis, we believe that these test requirements have certain commonalities. It is feasible to extract the common parts of power quality detection and analysis, develop a detection and analysis platform, and then develop different test functions and products with different operation modes. . The core of this project is based on PIC32 design and development of power quality detection and analysis platform, using high-performance RISC processor, high-speed real-time acquisition of three-phase current and three-phase voltage analog signals of detection points, real-time analysis and processing of data, calculation of various power grids The power parameter analyzes the power quality of the power grid, displays the information in real time, stores the detected data in place, and transmits the data to the back-end computer system through the communication interface. Lithium Battery Cr2,Film Camera Battery,Industrial 3V Lithium Batteries,Instrument Primary Lithium Battery Jiangmen Hongli Energy Co.ltd , https://www.honglienergy.com