Research On Electric Network Comeprehensive Line Loss Calculation And Loss Reduction Design Support System

With the rapid development of our economy and the aggravated tension of international energy, improving the quality of power and reducing line loss has become more and more important in the national policy. Line loss is a kind of power loss generated in power transmission and distribution. As an important economic and technical indicator of electric power enterprise, line loss rate is also a comprehensive technological and economic indicator which can be used to measure the level of power system planning, design and management. Therefore, theoretical line loss calculation is an important work in the electric power enterprise. By means of line loss analysis and optimization we can save energy, improve economic efficiency and achieve the ultimate purpose of the line loss management work. High-quality line loss calculation and optimization, correct and effective loss reduction decision making depend on advanced theories, methods, convenient and practical power application software.This thesis analyzed the status quo of power line loss calculation and loss reduction investigation domestic and overseas at present. According to the structure and properties of different voltage grade power grid, relative practical loss calculation method and loss reduction optimization theory were investigated, including the mathematical model of the power gird tide calculation, optimal reactive power calculation, high voltage power grid loss calculation, medium voltage power grid loss calculation, medium voltage power grid distribution circuit reactive power compensation, low voltage network load configuration optimization, etc.A secondary development is realized based on Microsoft Visio 2003 platform for purpose of designning line loss comprehensive calculation and loss reduction decision making support system. The software is multifunction which contains convenient and effective visualized modeling platform, loss calculation and loss reduction optimization, drawing and editing electric diagrams, calculation and optimization results automatic generation. It provides line loss managers with visual loss calculation tools, loss calculation results, and optimized configuration and loss reduction measures. The software provides strong support for various power supply company on energy saving, line loss management and decision making.