دانلود رایگان مقاله انگلیسی تعیین مقاوم پارامترهای تثبیت کننده های سیستم قدرت با روش حساسیت مسیر به همراه ترجمه فارسی
عنوان فارسی مقاله: | تعیین مقاوم پارامترهای تثبیت کننده های سیستم قدرت با روش حساسیت مسیر |
عنوان انگلیسی مقاله: | Robust PSS Parameters Design Using a Trajectory Sensitivity Approach |
رشته های مرتبط: | مهندسی برق، مهندسی صنایع، سیستم های قدرت، بهینه سازی سیستم ها، برق قدرت |
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توضیحات | ترجمه به صورت خلاصه انجام شده است |
نشریه | IEEE |
کد محصول | f127 |
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بخشی از مقاله انگلیسی: I. INTRODUCTION I N modern interconnected power systems, power system stabilizer (PSS) is widely utilized to damp low frequency power oscillations and to improve small signal stability [1]. Generally, a PSS design includes two aspects, the choice of the PSS installation site and the design of the PSS parameters. Eigenvalue analysis and participation methods [1], [2] have been used in the problem of selection PSS site. Various methods such as electric torque analysis, phase compensation and pole replacement [3]–[6] have been proposed and utilized in the design of PSS parameters. New methods in robust design of PSS parameter have been appeared in more recent literatures [7]–[11]. However, all these PSS parameter design methods are based on a linear system model of power systems at a certain operating point. One shortcoming for an effective PSS setting for small-signal stability is that the synchronizing torque may be impaired following a large disturbance [2]. A viable way to overcome this is a discontinuous excitation control scheme called transient stability excitation control [1], whose implementation sometimes needs remote telemetered signals. This paper proposes a trajectory sensitivity based method to address this problem, i.e., toenhance both small and large-signal stability by one PSS parameter setting only. Trajectory sensitivity approach was originally applied in the system control and parameter estimation [12], [13]. A method for trajectory sensitivity simulation of hybrid differential and algebraic discrete systems has been reported in [14]. Recently it has also been successfully applied in analysis of grid disturbance [15], in transient stability analysis and control [12], [16]–[18] and in tuning limiter of system nonlinear controller [19], [20]. Approach of nonlinear trajectory simulation has been widely utilized in verifying the effect of PSS parameter design [7]–[11]. Trajectory sensitivity enables us to extrapolate the system dynamic behavior for a small change in system parameters. It is possible to extend its applications to the area of optimal PSS parameter design for enhancing system overall stability by damping low frequency oscillations. In this paper, an objective function represented by generator speeds is introduced to measure the PSS effect on damping system oscillations. A trajectory sensitivity mapping technique is developed to evaluate the gradient of the objective function with respect to PSS parameters and to coordinately tune PSS parameters. Case studies on the four-generator and the ten-generator New England test systems validate effectiveness of the approach on PSS parameter design. |