Real time simulation of a robust LQG based wide area damping controller in power system

Bhadu, Mahendra; Senroy, Nilanjan

doi:10.1109/isgteurope.2014.7028850

Cited by 15 publications

(7 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both linear time-invariant and linear time-variant systems are accessible to LQG control. This examines unpredictable linear models with inadequate state knowledge that are influenced by additional white Gaussian noise (Bhadu and Senroy, 2014). The proposed modeling of the suggested LQG controller is presented in this research article to enhance performance under the disturbance with uncertainties of modern power systems.…”

Section: Developed Simultaneous Frequency and Podc Schemementioning

confidence: 99%

Simultaneous Damping and Frequency Control in AC Microgrid Using Coordinated Control Considering Time Delay and Noise

Arora,

Bhadu,

Kumar

2024

Transactions of the Institute of Measurement and Control

Self Cite

View full text Add to dashboard Cite

The incorporation of converter-based generating sources in utility-scale microgrids causes frequency instability and low-frequency oscillations (LFOs), which is also a reason for degeneration in system stability. Damping frequency control is an essential part of alternating current (AC) microgrid system operation and control. Sudden changes in load, variations in renewable power outputs due to changes in solar insolation or wind speed, and so on factors cause the system frequency to deviate from the nominal value. Therefore, the role of a frequency controller is to maintain the dynamic stability in an AC microgrid by retaining the system frequency at the nominal value. Again, AC microgrids with high renewable power penetration face even more difficulty in maintaining frequency stability because of their poor inertial response. The research presented here proposes a novel approach for grid-connected AC microgrid oscillation damping and frequency control that simultaneously takes into consideration time delay and noise. To improve the frequency response and dampen LFOs by providing the voltage and frequency within the specified range, a coordinated technique-based control approach is adopted. In the developed hybrid control, the frequency controller relies on active power modulation, while the power oscillation damping controller is dependent on reactive power modulation. To improve stability and reduce communication consequences such as noise and signal latency (time delay), the developed power oscillation damping controller and frequency controller are coordinated along with the robust linear quadratic Gaussian controller. The comparative investigation of the effectiveness of the coordinated control technique is employed in the software of MATLAB/Simulink for grid-connected AC microgrid. The outcome of the simulation illustrates the superior effectiveness of the suggested controller over the traditional droop controller for huge power flows under disturbance with various operating conditions, under/overfrequency events, time delay, and noise. This grid encouragement capability for AC microgrids is anticipated to lead to novel possibilities for generating revenue.

show abstract

Section: Developed Simultaneous Frequency and Podc Schemementioning

confidence: 99%

Simultaneous Damping and Frequency Control in AC Microgrid Using Coordinated Control Considering Time Delay and Noise

Arora,

Bhadu,

Kumar

2024

Transactions of the Institute of Measurement and Control

Self Cite

View full text Add to dashboard Cite

show abstract

“…Step 6: Calculate the mean prediction x k pre and error covariance P k pre according to (8) and (9).…”

Section: Implementation Algorithmmentioning

confidence: 99%

“…The utilisation of wide-area measurement systems (WAMS) enables remote state estimation using phasor measurement unit (PMU) measurements. State estimation is involved in control strategies such as linear quadratic regulator control [1][2][3][4][5][6], linear quadratic Gaussian control [7][8][9] etc. It is also utilised in the design of protection schemes, which are based on the dynamic model of the system or apparatus under protection [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Dynamic state estimation of generators using spherical simplex unscented transform‐based unbiased minimum variance filter

Joseph

Tyagi

Kumar

2020

IET Generation, Transmission & Distribution

View full text Add to dashboard Cite

“…) acts as a input to the controller. The system (5) and controller (8) can be written as a continuous-time augmented system as in (10). (10) where, matrix .…”

Section: Modelling Of Event-triggered Communication In Wide Area Controlmentioning

confidence: 99%

“…The design and application of WADC in the presence of imperfect communication medium has been studied in recent years [2, 5–9]. Most proposed control schemes rely on the continuous availability of the remote signal for their success.…”

Section: Introductionmentioning

confidence: 99%

Event‐triggered communication in wide‐area damping control: a limited output feedback‐based approach

Bhadu

Tripathy

Kar

et al. 2016

IET Generation, Transmission & Distribution

Self Cite

View full text Add to dashboard Cite

A conceptual design methodology is proposed for event-triggered based power system wide area damping controller. The event-triggering mechanism is adopted to reduce the communication burden between origin of the remote signal and the wide area damping controller (WADC) location. The remote signal is transmitted to the WADC only when an eventtriggering condition based on a predefined system output, is satisfied. The triggering condition is derived from a stability criterion, and is monitored continuously by a separate eventmonitoring unit located at the origin of the remote signal. The stability of the resulting closed loop system is guaranteed via the input-to-state stability (ISS) technique. The proposed event triggered WADC (ET-WADC) is implemented on two typical test power systems -two area four machine and IEEE 39 bus 10 machine. The validation of proposed mechanism is carried out through non-linear simulation studies on MATLAB/Simulink platform. The numerical results show the efficacy of the controller in managing the communication channel usage without compromising the stated system stability objectives.

show abstract

Real time simulation of a robust LQG based wide area damping controller in power system

Cited by 15 publications

References 17 publications

Simultaneous Damping and Frequency Control in AC Microgrid Using Coordinated Control Considering Time Delay and Noise

Simultaneous Damping and Frequency Control in AC Microgrid Using Coordinated Control Considering Time Delay and Noise

Dynamic state estimation of generators using spherical simplex unscented transform‐based unbiased minimum variance filter

Event‐triggered communication in wide‐area damping control: a limited output feedback‐based approach

Contact Info

Product

Resources

About