Consulting Report Template V5 April 2009

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Chile Consulting Polarization-Maintaining Fiber Optic G 652

Polarization-maintaining fibers work by intentionally introducing a systematic linear in the fiber, so that there are two well defined polarization modes which propagate along the fiber with very distinct phase velocities. The beat length Lb of such a fiber (for a particular wavelength) is the distance (typically a few millimeters) over which the wave in one mode will experience an additional delay of one wavelength compared to the other polarization mode. Thus a length Lb /2 of such fiber is equivalent to a.
DSP Relay Protection Experiment Report

In this paper, an overcurrent relay is built and investigated using DSP, TMS320F2812. The overcurrent protection is chosen since it is used as a major protection in the distribution systems. Comparison results. Various DSP techniques such as Fast Fourier Transform (FFT), Discrete Fourier Transform (DFT) and Wavelet Transform along with Artificial Neural Networks (ANN) can be used to detect spurious signals and disturbances. These relays are capable of performing complex processing faster and with higher accuracy as. Nevertheless, numerical relays embedded with digital signal processor (DSP) are able to improve the protection operation significantly. It integrates computation, visualization, and programming in an easy-to-use environmen where problems and solutions are easy access to matrix software developed by the LINPACK and EISPACK projects.
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