Utilization of DFIG-based wind model for robust damping of the low frequency oscillations in a single SG connected to an infinite bus

Shah, Nilay N.; Joshi, Sanjay R.

doi:10.1002/etep.2761

Cited by 10 publications

(12 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is worth mentioning that a TVE of 1% corresponds to a maximum magnitude error of 1%, whenever the error in phase angle is zero. On the other hand, sinusoidal frequency variations are common electrical conditions in power systems [33][34][35][36]. By considering that the proposal aims to compensate magnitude under wide frequency deviations, the aforementioned condition is also analyzed in this work although the Std.…”

Section: Steady-state and Dynamic Testsmentioning

confidence: 99%

“…(M-class filters), which have already been tested; besides, these tests are not related with frequency deviations. Although tests for sinusoidal frequency variations are not considered in the Std., a study case is also presented since those oscillations can occur in real power systems [33][34][35][36]. The obtained results show that total vector error (TVE) is less than 1% for a wide frequency deviation range.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Improved Performance of M-Class PMUs Based on a Magnitude Compensation Model for Wide Frequency Deviations

et al. 2020

View full text Add to dashboard Cite

Phasor measurement units (PMUs) are important elements in power systems to monitor and know the real network condition. In order to regulate the performance of PMUs, the IEEE Std. C37.118.1 stablishes two classes—P and M, where the phasor estimation is carried out using a quadrature oscillator and a low-pass (LP) filter for modulation and demodulation, respectively. The LP filter plays the most important role since it determines the accuracy, response time and rejection capability of both harmonics and aliased signals. In this regard and by considering that the M-class filters are used for more accurate measurements, the IEEE Std. presents different M-class filters for different reporting rates (when a result is given). However, they can degrade their performance under frequency deviations if the LP frequency response is not properly considered. In this work, a unified model for magnitude compensation under frequency deviations for all the M-class filters is proposed, providing the necessary values of compensation to improve their performance. The model considers the magnitude response of the M-class filters for different reporting rates, a normalized frequency range based on frequency dilation and a fitted two-variable function. The effectiveness of the proposal is verified using both static and dynamic conditions for frequency deviations. Besides that, a real-time simulator to generate test signals is also used to validate the proposed methodology.

show abstract

Section: Steady-state and Dynamic Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Improved Performance of M-Class PMUs Based on a Magnitude Compensation Model for Wide Frequency Deviations

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The WTGs are broadly classified as squirrel‐cage induction generator (SCIG), doubly fed induction generator (DFIG), synchronous generators (SGs), permanent magnet synchronous generators (PMSGs), etc. The state of art WECs makes use of DFIG‐based WTG since the DFIG consists of its own RSC and GSC for the control of active‐reactive power and DC link voltage etc . The wind farms are located far away from the grid, hence it is essential to use high capacity, long‐distance transmission network for grid integration.…”

Section: Introductionmentioning

confidence: 99%

“…The state of art WECs makes use of DFIG-based WTG since the DFIG consists of its own RSC and GSC for the control of active-reactive power and DC link voltage etc. [1][2][3] The wind farms are located far away from the grid, hence it is essential to use high capacity, long-distance transmission network for grid integration. Use of long-distance transmission line results in reduction of transmission capacity.…”

Section: Introductionmentioning

confidence: 99%

Detailed modelling and development of a laboratory prototype for the analysis of subsynchronous resonance in DFIG‐based wind farm

Mahalakshmi

Thampatty

2020

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary The interconnection between the grid and nonconventional energy sources has become more essential due to the huge rise in energy demand. In the case of wind energy, the grid integration undergoes lots of stability issues. The long‐distance transmission lines are preferred since the wind farms are positioned far from the grid. However, this lowers the bulk power transfer ability of the line. The simple solution to enhance the power transfer capacity is the insertion of series capacitor in the line. However, the frightening factor in inserting the series capacitor is subsynchronous resonance (SSR) oscillations which can lead to shaft fatigue between turbine and generator set. This paper focuses on the analysis of SSR in series‐compensated doubly fed induction generator (DFIG)–based wind energy conversion systems (WECSs). The detailed mathematical modelling of DFIG‐based wind turbine generator (WTG) in state space form which is essential for SSR analysis is explained. The proposed model is found to be more accurate as it includes the dynamics of the rotor‐side converter (RSC) and grid‐side converter (GSC). The influence of series capacitive compensation in a WECs is dealt by employing eigenvalue approach. The developed model is embedded with RSC and GSC controllers for analyzing SSR effect for different operating conditions such as wind speed variations and varying compensation levels using MATLAB/SIMULINK. Also, the scaled‐down model of a 2‐MW wind turbine is deployed in laboratory using a grid‐integrated, series‐compensated 1.1‐kW DFIG machine to realize the influence of series capacitive compensation. It is found that the stability of SSR is affected by different wind velocities and capacitive compensation levels.

show abstract

“…The FLDC shows good performance compared with PSO-based CDC over the wide range of operating conditions to eliminate SSR. More recently, the low-frequency oscillations with linking DFIGs to a single SG connected to an infinite bus was analysed by Shah et al [17,18], in which 100-300 MW-DFIG wind farms were connected with and without the use of either RSC or GSC controllers.…”

Section: Introductionmentioning

confidence: 99%

Modal analysis for selection of DFIG‐based wind farms for damping and reduction of the risk of SSR

Shah¹,

Joshi²

2019

IET Energy Systems Integration

Self Cite

View full text Add to dashboard Cite

The rapid growth of non-conventional energy sources makes it important to identify the sub-synchronous oscillationdamping capacity of generating systems such as doubly fed induction-generator-based (DFIG) wind farms under the IEEE-first benchmark model (FBM). In this study, a system, in which the FBM is augmented to include DFIG generation was evaluated at various compensation levels, wind speeds, and DFIG ratings. On the basis of this analysis, the authors propose a basis for the selection of an accurate configuration of wind farms penetration at a given compensation for damping and reducing the risk of sub-synchronous resonance (SSR) in the FBM-DFIG augmented system. It is also demonstrated that, with a suitable DFIG rating, carefully choosing the gains of the DFIG inbuilt converter controllers and an acceptable distance of connected short transmission line between the DFIG and the synchronous generator can suppress induced SSR at 60% compensation, eliminating the need for a damping controller. To obtain higher ranges of compensation level, a corresponding DFIG wind farm asset is suggested for reducing the risk of SSR. The proposed model was validated using eigenvalue analysis, calculation of the participation factor, and time-domain simulation.

show abstract

Utilization of DFIG-based wind model for robust damping of the low frequency oscillations in a single SG connected to an infinite bus

Cited by 10 publications

References 17 publications

Improved Performance of M-Class PMUs Based on a Magnitude Compensation Model for Wide Frequency Deviations

Improved Performance of M-Class PMUs Based on a Magnitude Compensation Model for Wide Frequency Deviations

Detailed modelling and development of a laboratory prototype for the analysis of subsynchronous resonance in DFIG‐based wind farm

Modal analysis for selection of DFIG‐based wind farms for damping and reduction of the risk of SSR

Contact Info

Product

Resources

About