Improvement of Oscillatory Stability in Wide Area Controlled Systems Using Power Injection
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Improvement of Oscillatory Stability in Wide Area Controlled Systems Using Power Injection T. Prakash1 · V. Senthil Kumar1
© Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract This paper presents a novel method for determination of location and tuning of parameters of electronic static synchronous compensator (E-STATCOM) for oscillation control in Wide area monitored power systems. The effect of active and reactive power injection by E-STATCOM, on the damping performance of a two-area interconnected system has been studied and analyzed. Dynamic non-linear simulations of the test system with appropriate modeling were carried out for evaluation of performance of the proposed controller design, and to take forward the previous works done on wide area control of power systems. Novel attempt has been made for optimal selection of nodes for positioning E-STATCOMs in multi-machine power system, by considering the participation factor of angular variation of voltage vector in modal analysis. Many operating conditions have been considered for the proposed study under both normal states and contingencies. Results of the simulation indicate that the proposed method is highly effective in suppressing the low frequency oscillations of the targeted modes and performs better than the flexible alternating current transmission system devices without the support of energy storage. This method is also used for cloud application. Keywords Power System oscillation control · POD · E-STATCOM · Active power injection · Low frequency damping controllers · WAMPAC · Cloud computing
1 Introduction The world-wide power system today is approaching towards open access, transparency to customer, smart planning, and operation. The basic requirements for such a power system are flexibility and reliability in operation and control of power system. On the other hand, the thrust on green energy have put considerable constraints on the operation and control of conventional power systems. These necessities have opened the way for flexible AC transmission systems (FACTS) and energy storage systems (ESS) to play a significant role in * T. Prakash [email protected] V. Senthil Kumar [email protected] 1
Anna University, Chennai 600002, India
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the times ahead. Both FACTS and ESS have resulted from the advancement in technology and design and have also proved their worth and benefits. Even though the FACTS is a high-cost technology compared to the traditional control systems such as PSS and local control systems, they have become popular world-wide in view of their tremendous performance and reliability. The important information’s are stored on cloud to avoid security Issues. Low frequency oscillations appear due to the inertia of the synchronous machines in responding to the disturbances that happen in large power systems. Though all the generators involved are under synchronism, a finite time is needed to adjust their speeds by acceleration or by deceleration in th
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