Model Validation for Power System Frequency Analysis

Seifi, Hossein; Delkhosh, Hamed

doi:10.1007/978-981-13-2980-7

Cited by 9 publications

(9 citation statements)

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“…Using the incorrect parameters for the dead band, droop, and ramp rate constraints can lead to significant incorrect frequency response and as a result, exhibiting frequency mismatch between simulation results and measurement values. 3,18,33 Simulation tests prove that system responses are much less sensitive to the values of other turbine-governor parameters such as time constants. 21 Therefore, in this article, only the key parameters which dominate the measured responses are selected for extraction in the validation process, and other parameters are only considered in the models with the known parameters values.…”

Section: Modeling Approachmentioning

confidence: 99%

“…In the system-wide model validation, using the generic models considering the most influential parameters can lead to satisfactory results even in real large-scale power systems. 3 Based on previous studies identifying the most influential parameters of the governor on frequency studies, 21 governor droop, dead band, and ramp-up rate constraint are considered for extraction in the validation process and other parameters of governor such as time constants are modeled, but their values assumed to be known. The generating unit active power is closely related to system frequency response.…”

Section: Modeling Approachmentioning

confidence: 99%

“…The impact of such inaccuracy in dynamic simulation varies from minor emergency alarms to large-scale power system blackouts for a worst-case scenario. 3 Therefore, model validation and calibration process must be regularly conducted to follow any changes in the parameters of the equipment model. 1 Model validation and calibration can be classified based on two different perspectives: (1) generality of study and (2) optimization method.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, this solution is not practical in large-scale power grids due to the required efforts and expenses, which are massive. 3 On the other hand, system-wide model validation of power systems using SCADA and/or WAMS data based on generic models can be the proper solution. In these studies, the whole system is considered in the simulation, and system elements are validated simultaneously while taking into account their mutual effects.…”

Section: Introductionmentioning

confidence: 99%

“…The turbine-governor model is the most influential component of a generating unit affecting the power system dynamic frequency studies. 3 Accurate simulation of turbine-governor for system frequency deviations during events has drawn a lot of attention due to its importance to the security of the power grids. 13 It is worth noting that some researchers, such as, [14][15][16] have developed a reduced and integrated model to study the frequency behavior of the power system.…”

Section: Introductionmentioning

confidence: 99%

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A new approach for system‐wide power system frequency model validation via measurement data

Sajjadi

Seifi

Delkhosh

2021

Engineering Reports

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Models are commonly used for various power system studies. This article presents a new framework to estimate and validate the parameters of the turbine-governor and also the load model in a multi-machine power system environment. The proposed method utilizes the center of inertia frequency and generating unit signals (especially active power) recorded by measurement devices to validate the parameters. The objective function is to minimize the total squared error between the simulated and the measured responses for some events. Particle swarm optimization is used to estimate the parameters. The accuracy of the estimated parameters is investigated through sensitivity analysis. Moreover, in order to improve the efficiency of the identification procedure for large-scale networks, a new scheme is proposed, which is based on the impact of each estimated parameter during the simulation time frames. The simulation results on the IEEE 9-bus and IEEE 118-bus systems show the validity and benefit of the proposed method.

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