County Power Enterprises Power Quality Supervision Technology

With the continuous development of the national economy, power system load structure has undergone significant changes. Many electrical power grid into the access device, which is a nonlinear load, harmonic grid problem becomes more severe. Power quality monitoring and analysis of the status quo has become a major issue to be resolved is the power company.Chongqing county economy in recent years has developed rapidly, all kinds of electrical equipment to industrial enterprises large number of harmonics injected into the power grid, which results in power quality is getting worse, so the county power quality problem detection and treatment have very important practical significance.In this paper, The main contents of this paper are as following:1. Describe the concept of power quality in detail, and discuss the basic steady-state power indicators, such as supply voltage deviation, voltage fluctuation and system frequency deviation, and further explain the national power quality standard.2. Study the current status of the power quality of the research object, and determine the development trend diagram of the power quality, and get the relevant data and corresponding research data.3. The analysis and research on the power quality of a county is mainly focused on harmonic, voltage and power detection technology and analysis of the power quality index analysis method, providing accurate theoretical guidance for the follow-up power quality analysis.4. Study the current situation of power management in a county, and put forward the corresponding suggestions and measures according to the research data, and put forward the solutions and opinions of the integrated harmonic and voltage sag.