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Development and Application of the Calculation Software for Very Fast Transient Overvoltage in Gas Insulated Substation

Author: ShiZuo
Tutor: ZhangZhongYuan
School: North China Electric Power University
Course: High Voltage and Insulation Technology
Keywords: Gas-insulated substation Very Fast Transient Overvoltage Finite Element Method Transient calculation Software Development
CLC: TM769
Type: Master's thesis
Year: 2011
Downloads: 43
Quote: 0
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Abstract


Gas insulated substation (GIS) with its small footprint , stable operation and easy maintenance , a series of advantages , more and more used in power systems . Switching operations in GIS will be generated within the GIS Very Fast Transient Overvoltage (VFTO). Such chopping features overvoltage has a few nanoseconds to tens of nanoseconds very steep wave head , great harm to different parts of the GIS equipment insulation , the transient process to the secondary side and external dissemination would endanger the safe operation of the secondary equipment and transformer longitudinal insulation . Simulation application VFTO EMTP , EMTP require users must have a solid theoretical knowledge overvoltage professional , a lot of inconvenience to use GIS site operating personnel . Therefore , research and development in line with the site operating personnel working habits , the friendly interface VFTO simulation software has an important significance . Firstly, research and summarizes the gas-insulated substation element modeling method based on the actual structure of GIS , the use of finite element software ANSYS electric field analysis and calculation of parameters of the equipment ( components) , laid the foundation for subsequent simulation calculation . Secondly, based on the development platform of Microsoft VisualStudio2008 difficult transient modeling , using the C # language development Bergerac Long algorithm as the core VFTO simulation software GISTP , the software -based GIS once the system diagram for modeling computational site operators without having to learn knowledge can operate ; functional testing of the software through the provincial software Association , and with EMTP contrast verify its accuracy . Finally, the calculated device parameters ( elements) and GISTP, the two actual GIS substation in a different operating mode VFTO the simulation , based on the results , the proposed protective measures and run rationalization proposals .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system automation > Computer application in power system
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