Wide-Area Measurement-Based Stabilizing Control of Power System Considering Signal Transmission Delay

Abstract

Abstract-Recent technological advances in the area of widearea measurement systems (WAMS) has enabled the use of a combination of measured signals from remote locations for centralized control purpose. The transmitted signals can be used for multiple swing mode damping using a single controller. However, there is an unavoidable delay involved before these signals are received at the controller site. To ensure satisfactory performance, this delay needs to be taken into account in the control design stage. This paper focuses on damping control design taking into account a delayed arrival of feedback signals. A predictor-based control design strategy is discussed for such time-delayed systems. The concept is utilized to design a WAMS-based damping controller for a prototype power system using a static var compensator. The controller performance is evaluated for a range of operating conditions.

A robust SMES controller design for stabilization of inter-area oscillations based on wide area synchronized phasor measurements

“…The long time delays are detrimental to system stability, degrade the performance and robustness of the system, and deteriorate the effects of power system damping controllers. As mentioned in [11,22], the overshoot of active power oscillation increases and the setting time is lengthened while the time delays occur. Besides, the closed-loop control system may become unstable when the time delay is over a certain value.…”

“…Particularly, the application to wide area stabilization has been paid attentions by many researchers [7][8][9][10][11][12]. In [7,8], the wide area stabilizing control using power system stabilizer (PSS) has been presented.…”

“…In [7,8], the wide area stabilizing control using power system stabilizer (PSS) has been presented. Besides, the phasor measurement has been applied to design of wide area damping controller of flexible AC transmission systems (FACTSs) devices [9][10][11] and high-voltage direct current (HVDC) system [12] for stabilization of inter-area oscillation. Additionally, to enhance the system stability, the superconducting magnetic energy storage (SMES) can be expected as one of the effective device with the ability to swiftly exchange electrical energy with a power system.…”

Minimization of shaft oscillations by fuzzy controlled SMES considering time delay

“…Usually, time delays may range from several microseconds to few hundred milliseconds [13][14][15][19][20][21][22][23][24][25]. In this work, extensive simulations are carried out considering various typical values of time delays.…”

Optimization and coordination of wide-area damping controls for enhancing the transfer capability of interconnected power systems

“…Fortunately, the new technology of wide-area measurement system (WAMS) offers the potential of global damping controls to ameliorate the situation [1][2][3][4][5]. Several wide-area control schemes have been reported, such as the remote feedback controller [5,6], the multi-loop PSS [4,7], the H∞-approach-based supervisory-level PSS [8] and FACTS controllers employing global signals [9,10].…”