A New Approach to Continuous Latency Compensation With Adaptive Phasor Power Oscillation Damping Controller (POD)

Chaudhuri, Nilanjan Ray; Ray, S.; Majumder, Ritwik; Chaudhuri, Balarko

doi:10.1109/tpwrs.2009.2031908

Cited by 102 publications

(38 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The total time delay in the control loop in CSG's WADC is about 110 ms, of which 40 ms is from the PMU's data processing [40]. Adaptive WACS designed to include transmission delays from 0 to 1.4 s is studied in [44], [45]. Loss of remote signals may be solved by a decentralized control structure [32].…”

Section: Wide-area Damping Controlmentioning

confidence: 99%

Survey on power system stabilizers control and their prospective applications for power system damping using Synchrophasor‐based wide‐area systems

Chompoobutrgool

Vanfretti

Ghandhari

2011

Int Trans Elec Energy Syst

View full text Add to dashboard Cite

Power system oscillation damping remains as one of the major concerns for secure and reliable operation of large power systems, and is of great current interest to both industry and academia. The principal reason for this is that the inception of poorly-damped low-frequency inter-area oscillations (LFIOs) when power systems are operating under stringent conditions may lead to systemwide breakups or considerably reduce the power transfers over critical corridors. With the availability of high-sampling rate phasor measurement units (PMUs), there is an increasing interest for effectively exploiting conventional damping control devices, such as power system stabilizers (PSSs), by using these measurements as control input signals. In this paper, we provide a comprehensive overview of distinct elements (or "building blocks") necessary for wide-area power system damping using synchrophasors and PSSs. These building blocks together shape a tentative methodical framework, and are disposed as follows: (1) fundamental understanding of the main characteristics of inter-area oscillations, (2) wide-area measurement and control systems (WAMS and WACS) and wide-area damping control (WADC), (3) advanced signal processing techniques for mode property identification, (4) methods for model-based small-signal analysis, (5) control input signals selection, and (6) methods for PSS control design. We also describe the latest developments in the implementation of synchrophasor measurements in WAMS and WACS as well as their prospectives for WADC applications. This paper serves both to abridge the state-of-the-art in each of these elements, and to accentuate aspiring ideas in each building block.

show abstract

Section: Wide-area Damping Controlmentioning

confidence: 99%

Survey on power system stabilizers control and their prospective applications for power system damping using Synchrophasor‐based wide‐area systems

Chompoobutrgool

Vanfretti

Ghandhari

2011

Int Trans Elec Energy Syst

View full text Add to dashboard Cite

show abstract

“…9. The details of the system can be found in [29]. The real power flow in line 45-35 was used as the feedback signal to damp power oscillations with a thyristor controlled series capacitor (TCSC) installed on the tie-line connecting the buses 18 and 50.…”

Section: E Case Study On a Larger Power Systemmentioning

confidence: 99%

Damping Control in Power Systems Under Constrained Communication Bandwidth: A Predictor Corrector Strategy

Chaudhuri

Chakraborty

Chaudhuri

2011

IEEE Trans. Contr. Syst. Technol.

Self Cite

View full text Add to dashboard Cite

Abstract-Damping electromechanical oscillations in power systems using feedback signals from remote sensors is likely to be affected by occasional low bandwidth availability due to increasing use of shared communication in future. In this paper, a predictor corrector (PC) strategy is applied to deal with situations of low feedback data rate (bandwidth) where conventional feedback would suffer. Knowledge of nominal system dynamics is used to approximate (predict) the actual system behavior during intervals when data from remote sensors are not available. Recent samples of the states from a reduced observer at the remote location are used to periodically reset (correct) the nominal dynamics. The closed-loop performance deteriorates as the actual operating condition drifts away from the nominal dynamics. Nonetheless, significantly better performance compared to conventional feedback is obtained under low bandwidth situations. The analytical criterion for closed-loop stability of the overall system is validated through a simulation study. It is demonstrated that even for reasonably low data rates the closed-loop stability is usually ensured for a typical power system application confirming the effectiveness of this approach. The deterioration in performance is also quantified in terms of the difference between the nominal and off-nominal dynamics. (e-mail: n.chaudhuri@imperial.ac.uk, b.chaudhuri@imperial.ac.uk Index Terms-Damping

show abstract

“…Several techniques have been reported in the literature to tackle the adverse impact of latency or delay involved in communicating the remote signals [20,21,22]. Another potential problem could be low data rate/bandwidth availability which is likely to be encountered for networked communication if WAMS infrastructure were to be shared between multiple data intensive services in the future.…”

Section: Introductionmentioning

confidence: 99%

Fault‐tolerant control design to enhance damping of inter‐area oscillations in power grids

Sevilla

Jaimoukha

Chaudhuri

et al. 2013

Intl J Robust & Nonlinear

View full text Add to dashboard Cite

SUMMARYIn this paper passive and active approaches for the design of fault-tolerant controllers (FTCs) are presented. The FTCs are used to improve the damping of inter-area oscillations in a power grid. The effectiveness of using a combination of local and remote (wide-area) feedback signals is first demonstrated. The challenge is then to guarantee a minimum level of dynamic performance following a loss of remote signals. The designs are based on regional pole-placement using Linear Matrix Inequalities (LMIs). First, a passive FTC is proposed. It is shown that the computation of the controller reduces to the solution of bilinear matrix inequalities. An iterative procedure is then used to design the controller. Next, as an alternative to active, time varying controllers, one for each fault scenario, we propose an approach for the design of a 'minimal switching' FTC in which only one controller is designed, but where a simple switch is incorporated into the controller structure. A case study in a linear and nonlinear Nordic equivalent system is presented to show that the closed-loop response using a conventional control (CC) design could deteriorate the performance or even destabilize the system if the remote signals are lost and to demonstrate the effectiveness of the proposed FTC designs.KEY WORDS: Fault-tolerant control, regional pole-placement, simultaneous design, power oscillation damping, local and remote feedback.

show abstract

A New Approach to Continuous Latency Compensation With Adaptive Phasor Power Oscillation Damping Controller (POD)

Cited by 102 publications

References 22 publications

Survey on power system stabilizers control and their prospective applications for power system damping using Synchrophasor‐based wide‐area systems

Survey on power system stabilizers control and their prospective applications for power system damping using Synchrophasor‐based wide‐area systems

Damping Control in Power Systems Under Constrained Communication Bandwidth: A Predictor Corrector Strategy

Fault‐tolerant control design to enhance damping of inter‐area oscillations in power grids

Contact Info

Product

Resources

About