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The extensive existence of governor deadband has a significant influence on the minimum frequency of power system after a disturbance. However, the strong nonlinearity of deadband makes it difficult to quantify its impact on the frequency response. For this end, the backlash non-linearity is adopted to represent for the governor with deadband. The non-linear characteristics of governor with deadband...
Fractional Frequency Transmission System (FFTS) is a new approach to integrate large-scale, remote wind power into grid. It adopts lower frequency, such as 50/3Hz, to transmit remote wind power to the load center directly. Therefore, it could reduce the voltage influence caused by the intermittence of wind power. In order to analysis the Stable characteristics of FFTS, power flow analysis of this...
Fractional Frequency Transmission System (FFTS) provides a novel approach to integrating the remote wind farm into grid. This approach can overcome the great challenges caused by the randomicity and the intermittence of the wind power. In 2005, the FFTS has been realized for the first time under the conditions of active inversion of phased-controlled cycloconverter, the result of it proves its effectiveness...
Fault current through the cycloconverter is analyzed by PSCAD/EMTDC, when the three-phase short-circuit fault occurs on bus of the lower frequency side (LFS) of the converter station in fractional frequency transmission system (FFTS). After introducing the simulation model of FFTS, some discussion is made for some phenomena which are different from the traditional transmission approach, such as the...
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