Software-in-the-loop simulation for a D-STATCOM

• Main Authors: Wei-yu Chen, 陳威宇
• Other Authors: Kuo-Lung Lian
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/52971559564711956991

碩士 === 國立臺灣科技大學 === 電機工程系 === 100 === $~~~~~~~~~$Simulation plays a vital role in power system as it helps engineers to analyze a large and/or complicated system before the system is actually being implemented. Simulation can greatly save money and help to prevent things such as catastrophic failure from happening. Simulation can be classified into offline simulation and real time simulation. A real time simulator, operated at real time, can be interfaced with an actual hardware to help the engineer to investigate and study a close-to- real-world system.\\ $~~~~~~~~~$A real time simulator can be classified into three types hardware-in-the-loop, rapid control prototyping and software-in-the-loop. A hardware-in-the-loop system consists of a simulated plant interacting with an actual controller. A rapid control prototyping system consists of an actual plant interacting with a simulated controller. Software-in-the-loop system is made of a simulated plant interacting with a simulated controller. This thesis will show how a software-in-the-loop simulation of a D-STATCOM can be implemented in the LABVIEW environment. To account for the problem of external events occurring between the simulation time grids, we employed the method of very small time step. To avoid the problem of inverting a matrix in real time, we proposed to update the dc voltage in every other step. The software-in-the-loop results are compared with those obtained from the offline simulation via PSCAD/EMTDC to show the validity of the proposed method.