Impact of reduced inertia on transient stability of networks with asynchronous generation

Naik, Prem Kumar; Nair, Nirmal-Kumar C.; Swain, Akshya

doi:10.1002/etep.2079

Cited by 22 publications

(14 citation statements)

References 34 publications

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“…In Ref. , the energy function based on the potential energy boundary surface method is used to analyze the influence of reduced inertia on the system transient stability. With the direct computation of the critical energy and the critical fault clearing time, study result reveals that the reduced effective system inertia due to DFIG wind turbines causes a degradation of the system's critical clearing time and transient stability margin.…”

Section: Impact Of Dfig Wind Turbine On the Power System Dynamicmentioning

confidence: 99%

Review of DFIG wind turbine impact on power system dynamic performances

Ngamroo

2017

IEEJ Transactions Elec Engng

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Recently, the variable-speed wind turbine with doubly fed induction generator (DFIG) has drawn significant attention because of its many advantages such as small power converter rating, the ability to control the output power, etc. Nevertheless, the large penetration of DFIG wind turbines may affect the power system dynamics. This paper provides a general review of the DFIG wind turbine's impact on power system dynamic performances such as frequency stability, transient stability, small-signal stability, and voltage stability. Besides, ancillary services from the DFIG wind turbine for the power grid, such as frequency support, reactive power, and voltage support, are explained. Especially, the survey emphasizes power oscillation damping methods by the DFIG wind turbine.

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Section: Impact Of Dfig Wind Turbine On the Power System Dynamicmentioning

confidence: 99%

Review of DFIG wind turbine impact on power system dynamic performances

Ngamroo

2017

IEEJ Transactions Elec Engng

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“…Substituting Equation 19 into Equation 17, the transfer function matrix for the block JK takes the form as…”

Section: Building Feedback Modelmentioning

confidence: 99%

Developing feedback model for power system dynamic sensitivity analysis

Hill

et al. 2017

Int Trans Electr Energ Syst

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Summary Since sensitivity analysis provides information on changes of the system dynamics with respect to changes of system parameters, it has been long recognized as an important tool for power system small‐signal stability analysis and controller designs. Sensitivity analysis is now much more important due to all the anticipated changes of future power systems, so more efficient and feasible methods are needed. The current sensitivity analysis methods are either simulation based or eigenvalue based. The eigenvalues and/or the time domain trajectories of the investigated system are solved for scenarios both before and after the parameter changes to evaluate the impacts of these changes on the system dynamics. However, both methods are actually numerically based, so often insufficient in fully revealing system physical characteristics. This paper analyzes the drawbacks of the available methods for analyzing the dynamic impacts of parameter changes in a power system and then develops a feedback‐based model for sensitivity analysis. The model is easier to identify the dynamic interactions of components; meanwhile, it also offers a new perspective on sensitivity analysis from the frequency domain. Case studies of increasing complexity demonstrate fully that the application of the proposed method reveals new insights on power system dynamics that conventional methods could not do.

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“…Power system reliability and stability need a system to maintain its electrical frequency within a safe rang to a variety of contingencies. [1][2][3][4][5] With the passing of the time, the distribute renewable energy source units replace a significant part of the synchronous power generation capacity, therefore the impacts of reduced inertia and damping on the frequency dynamics and stability become more and more considerable. 2,3 Power industry tends to replace conventional generation units with the wind power resources in which leads to change in inertia and damping coefficient of the entire system.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5] With the passing of the time, the distribute renewable energy source units replace a significant part of the synchronous power generation capacity, therefore the impacts of reduced inertia and damping on the frequency dynamics and stability become more and more considerable. 2,3 Power industry tends to replace conventional generation units with the wind power resources in which leads to change in inertia and damping coefficient of the entire system. 3,4 Among distributed/renewable power generators, variable-speed wind turbines (VSWTs) such as doubly fed induction generator (DFIG) and permanent magnet synchronous systems gained more popularity in comparison with other power resources.…”

Section: Introductionmentioning

confidence: 99%

“…2,3 Power industry tends to replace conventional generation units with the wind power resources in which leads to change in inertia and damping coefficient of the entire system. 3,4 Among distributed/renewable power generators, variable-speed wind turbines (VSWTs) such as doubly fed induction generator (DFIG) and permanent magnet synchronous systems gained more popularity in comparison with other power resources. 6,7 The DFIG wind turbines do not have the capability to contribute in the frequency response.…”

Section: Introductionmentioning

confidence: 99%

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Improvement of primary frequency control by inertial response coordination between wind and conventional power plants

Ataee

Bevrani

2017

Int. Trans. Electr. Energ. Syst.

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Summary The constant increasing of wind power penetration leads to more and more retirement of conventional power generators. Since modern wind energy conversion machines are decoupled from the grid by the back‐to‐back voltage‐based converters, they are not able to contribute to inertial response. Therefore, the reduced inertia of power systems at a high wind‐power penetration level causes the greater rate of change of frequency following a power imbalance event and may bring the system to the crucial stability situation. In this study, the supported inertial response from the variable‐speed wind turbines is based on electrically voltage‐based converter control taken from stored kinetic energy of rotating mass of wind turbines. To enhance the frequency response, we proposed a new inertial coordination control between controlled wind turbines and conventional generators. So as to investigate the performance of the proposed method, we introduced a new primary frequency response metric. Also, a comparison between the effects of temporarily inertial support from wind farms and coordination of inertial support between wind and conventional power plants is done. The simulation results on an updated version of IEEE‐39 bus power system in the presence of high penetration of wind farms indicate that by using the coordination control scheme, the frequency performance is significantly improved. The simulation is performed by MATLAB SimPowerSystems block set.

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Impact of reduced inertia on transient stability of networks with asynchronous generation

Cited by 22 publications

References 34 publications

Review of DFIG wind turbine impact on power system dynamic performances

Review of DFIG wind turbine impact on power system dynamic performances

Developing feedback model for power system dynamic sensitivity analysis

Improvement of primary frequency control by inertial response coordination between wind and conventional power plants

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