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Full-Text Articles in Electrical and Electronics
Voltage Stability Assessment Using P-Q Region Incorporating Wind Power, You Wang
Voltage Stability Assessment Using P-Q Region Incorporating Wind Power, You Wang
Theses and Dissertations
Voltage stability assessment (VSA) is a significant part in planning and operating of the power system. As one of the classic static VSA method, the P-V curve is widely used in identifying the weak buses in one power system. Normally, there is a required range of bus voltage variation that restricts load with fixed power factor within a maximum value. The loading margin can be defined as the distance between the operating point and the maximum load. The proposed P-Q region, which defines safe region for voltage stability, is more effective and intuitional when applying to VSA compared to the …
Optimal Reactive Power Planning For Distribution Systems Considering Intermittent Wind Power Using Markov Model And Genetic Algorithm, Cheng Li
Theses and Dissertations
Wind farms, photovoltaic arrays, fuel cells, and micro-turbines are all considered to be Distributed Generation (DG). DG is defined as the generation of power which is dispersed throughout a utility's service territory and either connected to the utility's distribution system or isolated in a small grid. This thesis addresses modeling and economic issues pertaining to the optimal reactive power planning for distribution system with wind power generation (WPG) units. Wind farms are inclined to cause reverse power flows and voltage variations due to the random-like outputs of wind turbines. To deal with this kind of problem caused by wide spread …
Scr-Based Wind Energy Conversion Circuitry And Controls For Dc Distributed Wind Farms, Ravi Nanayakkara
Scr-Based Wind Energy Conversion Circuitry And Controls For Dc Distributed Wind Farms, Ravi Nanayakkara
Theses and Dissertations
The current state of art for electrical power generated by wind generators are in alternating current (AC). Wind farms distribute this power as 3-phase AC. There are inherent stability issues with AC power distribution. The grid power transfer capacity is limited by the distance and characteristic impedance of the lines. Furthermore, wind generators have to implement complicated, costly, and inefficient back-to-back converters to generate AC. AC distribution does not offer an easy integration of energy storage. To mitigate drawbacks with AC generation and distribution, direct current (DC) generation and high voltage direct current (HVDC) distribution for the wind farms is …