شبیه سازی و ترجمه مقاله بهبود پایداری گذرا سیستم های قدرت با استفاده از TCSC، SSSC و UPFC

Introduction
Power system stability control is an important aspect. In the event of large disturbances, sudden faults, opening or closing of circuit breaker, load changes etc or internal mechanical torques affects the power system stability of the system. Since power systems is a large interconnected system it is required that it must have secure and stable operation. In the last two decades the Flexible AC transmission system (FACTS) devices are becoming more popular. The main objectives of FACTS devices are to improve transient stability, voltage stability and line transfer capacity. Out of these three objectives the improvement of transient stability is one of the most important aspects [18}. Using FACTS devices the enhancement of transient stability can be done by controlling the real and reactive power during fault conditions. Blackout can occur if the system has low transient stability because of which the generators may go out of synchronism. Due to nonlinear characteristics of power system components, undesirable oscillations and transients are produced under small and large signal perturbations. In long transmission lines series compensation, shunt compensation, series and shunt compensation schemes are used in order to enhance the transient stability of the system as well as the power transfer capability .Due to advancement of solid state power electronic, FACTS devices have fast and reliable operation. Different types of FACTS devices are available like TCSC, SVC, SSSC, UPFC etc [5]. In this paper transient stability analysis has been done by using TCSC, SSSC and UPFC. The present paper is laid out as follows: Section I – Introduction, Section II- Study system, Section III- Simulation results using PSAT model on IEEE 9 bus system prefault condition, faulty condition and post fault condition with different types of FACTS Controllers. Simulations results show that the transient stability of the system can be enhanced by different types of series FACTS controllers. UPFC has better transient stability enhancement characteristics as compared to other series FACTS controllers’ i.e TCSC and SSSC.

ترجمه مقاله:

بهبود پایداری گذرا سیستم های قدرت با استفاده از TCSC، SSSC و UPFC

چکیده مقاله : این مقاله افزایش ثبات گذرا در یک سیستم چند منظوره را با استفاده از کنترل کننده های سری FACTS ارائه می دهد. سری ادوات FACTS کنترل به عنوان مثال سیستم TCSC، SSSC و UPFC در این مقاله برای افزایش پایداری گذرا از استفاده شده است. شبیه سازی دامنه زمان در PSAT (جعبه برق ابزار تجزیه و تحلیل) انجام شده است. نتایج شبیه سازی که پایداری گذرا با استفاده از TCSC، SSSC و UPFC نشان می دهد ،که از سیستم چند منظوره پایداری گذرا بهبود می یابد. تجزیه و تحلیل در طول شرایط پیش خطا، شرایط خطا و با کنترل سری ادوات FACTS به عنوان مثال TCSC، SSSC و UPFC انجام شده است. که مشاهده شد که UPFC در مقایسه با TCSC و SSSC،در بهبود پایداری گذرا عملکرد بهتری دارد.

کلید واژه ها – سیستم قدرت، PSAT، FACTS، UPFC، TCSC، SSSC، پایداری گذرا، سیستم استاندارد 9 باسه، سیستم چند منظوره