Abstract
To solve load growth of an existing electrical system, we at first inject the power in system by building new electrical plants as wind, solar or thermal. And secondly in year 2030, when the system is so meshed, some customers are far away at production stations. We propose the installation of FACTS devices to enhance voltage in stability margins of power system under study. The power flow analysis using Newton Raphson method was running on Matlab and PSS/E Simulator. The results of simulation without STATCOM show the most affected buses. To improve the voltage for all these buses, reduce the power mismatches and tranmit more ative power, we insert STATCOM. STATCOM is a shunt connected FACTS application which facilitate the fast voltage control, the reactive power control and reduce the harmonics in a power system.
Highlights
The concern for good power grid management is to ensure that transits power are lower than the transmission capacity
Where VSTC and VSTC are STATCOM’s minimum and maximum voltages Equation (1) is transformed into a power flow expression for STATCOM and power injected at bus (i) by equations (3) and (4) respectively: SSTC
Table 5 shows the results of Newton Raphson (NR) without and with STATCOM
Summary
The concern for good power grid management is to ensure that transits power are lower than the transmission capacity. STATCOM a shunt connected FACTS application can facilitate the fast voltage control, the reactive power control and reduce the harmonics in a power system This is done while keeping constant and close the frequency to nominal value, the alternators speed rotation and the voltage magnitude in the various network buses [10], [11], [12], [13], [14], [15]. The electrical network consists of 13 transmissions lines, 8 generators (two wind power, two solar plants, three thermal plants and 1 Dual fuel) and 6 loads at bus 2,4,5,6,7 and 9 (Figure 1).The active and reactive powers generated are given in MW and MVAR respectively. A STATCOM is controlled reactive power source and improve the transient stability of systems [18] It provides voltage support by generating or absorbing reactive power at the point of common coupling without the need of large external or capacitor banks.
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