انجام پروژه متلب | متلبی

کد مقاله g107
عنوان مقاله:

Dynamic compensation of reactive power in Various Faults in Power System

جبران دینامیک توان راکتیو برای خطاهای مختلف در سیستم قدرت(statcom)

سال ارائه:  2012       نوع مقاله: JEEE                                       گزارش فارسی: دارد
کلید واژه : 
STATCOM, Voltage Source Converter (VSC), Pulse-width Modulation (PWM), Single line to ground fault

Abstract: The STATCOM (Synchronous Static Compensator) based on voltage source converter (VSC) is used
for voltage regulation in transmission and distribution system. The STATCOM can rapidly supply dynamic
VARs required during system faults for voltage support. Strict requirements of STATCOM losses and total
system loss penalty preclude the use of PWM (Pulse-Width Modulation) for VSC based STATCOM applications.
This constraint of implementing VSC without PWM functionality, results in over-currents and trips of the
STATCOM during and after system faults, when its VAR support functionality is most required. In this paper, we
propose and develop an “emergency PWM” strategy to prevent over-currents (and trips) in the VSC during and
after single line to ground system faults, LLLG faults and to ensure that the STATCOM supplies required
reactive power. The Simulation results are shown for a 48-pulse VSC based ± 100 MVAR STATCOM connected
to a 2- bus power strategy to prevent VSC over-currents and to supply required reactive power under line to
ground system faults.
Keywords: STATCOM, Voltage Source Converter (VSC), Pulse-width Modulation (PWM), Single line to
ground fault.

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