An effective approach is introduced to apply Transmission Line Model (TLM) to calculate induced voltage and current on a buried pipeline due to electrical power line. The approach can be applied to the parallel or nonparallel pipelines. The method also extended for any More
An effective approach is introduced to apply Transmission Line Model (TLM) to calculate induced voltage and current on a buried pipeline due to electrical power line. The approach can be applied to the parallel or nonparallel pipelines. The method also extended for any complexity system with different conditions and locations of the pipeline. A two ports circuitry network or model is achieved for a parallel pipeline. This two ports network is then modified for each small length, straight and ramped pipeline relative to the power line, which are used for circuitry modelling a complicated configuration of the pipeline. Two numerical services is proceeded to show the simplicity and effectiveness.
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Abstract— Electrical output power fluctuations of wind farms inject poor quality of power into the grid. This problem is more remarkable for the wind farms utilizing fixed speed wind turbine generators (WTGs). In this paper the output power of a 10MW wind farm wit More
Abstract— Electrical output power fluctuations of wind farms inject poor quality of power into the grid. This problem is more remarkable for the wind farms utilizing fixed speed wind turbine generators (WTGs). In this paper the output power of a 10MW wind farm with 24 fixed speed WTGs, is investigated. The most appropriate location for power smoothing based on the short-term power recording and effective power oscillation frequency is determined. A transformerless cascaded H-bridge STATCOM (CHB STATCOM) combined with a mechanically switched capacitor (MSC) is proposed to compensate variable reactive power of the wind farm, as well as to smooth the short-term active power fluctuations. The active power flattening is accomplished by proper sizing of the CHB dc link capacitors according to necessary energy exchange. By comparing several distributed and centralized schemes, a 2MVar CHB STATCOM, which is economically justified, is proposed. The STATCOM performance for improving power quality of the wind farm is investigated by applying several power profiles acquired from the wind farm using simulink MATLAB environment.
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