Development of composite load models of power systems using on-line measurement data

Choi, Byoung-Kon; Chiang, Hsiao‐Dong; Li, Yinhong; Chen, Yung‐Tien; Huang, Der-Hua; Lauby, M. G.

doi:10.1109/pes.2006.1709013

Cited by 15 publications

(4 citation statements)

References 20 publications

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“…Where: P is the active power, Q is the reactive power, I is the current, V1 is the voltage per phase, X1 is the stator leakage reactance, X2 is the rotor leakage reactance, R2 is the rotor resistance, E is the electromotive force induced in the rotor, and s is the slip. Choi et al [22] it is proposed to incorporate the equivalent circuit, as a model, in power system studies, as it appears in Figure 2, giving rise to the so-called "ZIP model with TAM ". Figure 2.…”

Section: Research Methods 21 State Of the Art Of Developed Models Of Tams As Load In The Epsmentioning

confidence: 99%

“…Figure 2. ZIP model with TAM [22] Where: I1 is the current per phase in the stator, Z is the impedance, R1 is the stator resistance, Xm is the magnetizing reactance, I0 is the current per phase of magnetization, and I2 is the current per phase in the rotor. Aree [23] the equivalent circuit shown in Figure 3 A new approach to three-phase asynchronous motor model for electric power … (Laura Collazo Solar) 2085 successive iterations.…”

Section: Research Methods 21 State Of the Art Of Developed Models Of Tams As Load In The Epsmentioning

confidence: 99%

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A new approach to three-phase asynchronous motor model for electric power system analysis

Solar

Montiel

Llanes

et al. 2021

IJPEDS

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In this paper, a new steady-state model of a three-phase asynchronous motor is proposed to be used in the studies of electrical power systems. The model allows for obtaining the response of the demand for active and reactive power as a function of voltage and frequency. The contribution of the model is the integration of the characteristics of the mechanical load that can drive motors, either constant or variable load. The model was evaluated on a 2500 kW and 6000 V motor, for the two types of mechanical load, in a wide range of voltage and frequency, as well as four load factors. As a result of the evaluation, it was possible to verify that, for the nominal frequency and voltage variation, the type of load does not influence the behavior of the powers and that the reactive power is very sensitive to the voltage variation. In the nominal voltage and frequency deviation scenario, it was found that the type of load influences the behavior of the active and reactive power, especially in the variable load. The results demonstrate the importance of considering the model proposed in the simulation software of electrical power systems.

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Section: Research Methods 21 State Of the Art Of Developed Models Of Tams As Load In The Epsmentioning

confidence: 99%

Section: Research Methods 21 State Of the Art Of Developed Models Of Tams As Load In The Epsmentioning

confidence: 99%

A new approach to three-phase asynchronous motor model for electric power system analysis

Solar

Montiel

Llanes

et al. 2021

IJPEDS

View full text Add to dashboard Cite

show abstract

“…Much of the literature focuses on parameter estimation following some large transient disturbance. In papers [3], [4], for example, the authors perform load parameter estimation based on a composite load model after a switching event, but a model selection is incorporated with the parameter selection procedure. The authors of [5] use modal identification to estimate system eigenvalues and use sensitivity analysis to infer system parameters, but the methods are primarily designed to infer aggregate generator inertias.…”

Section: Introductionmentioning

confidence: 99%

A Bayesian Framework for Power System Components Identification

Михалев¹,

Emchinov²,

Chevalier³

et al. 2020

Preprint

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Having actual models for power system components (such as generators and loads or auxiliary equipment) is vital to correctly assess the power system operating state and to establish stability margins. However, power system operators often have limited information about the actual values for power system component parameters. Even when a model is available, its operating parameters and control settings are time-dependent and subject to real-time identification. Ideally, these parameters should be identified from measurement data, such as phasor measurement unit (PMU) signals. However, it is challenging to do this from the ambient measurements in the absence of transient dynamics since the signal-to-noise ratio (SNR) for such signals is not necessarily large. In this paper, we design a Bayesian framework for on-line identification of power system component parameters based on ambient PMU data, which has reliable performance for SNR as low as five and for certain parameters can give good estimations even for unit SNR. We support the framework with a robust and time-efficient numerical method. We illustrate the approach efficiency on a synchronous generator example.

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“…Therefore, prevalence studies are currently conducted on flow measurement. These studies in the literature can be classified by four groups: Sensor design [4-5], Comparison of sensor characteristics [6][7][8][9][10][11], Developments of flow measurement methods [12][13][14], Flow measurement applications [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The Volume Measurement of Air Flowing through a Cross-section with PLC Using Trapezoidal Rule Method

Çalik¹

2013

Journal of Electrical Engineering and Technology

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-In industrial control systems, flow measurement is a very important issue. It is frequently needed to calculate how much total fluid or gas flows through a cross-section. Flow volume measurement tools use simple sampling or rectangle methods. Actually, flow volume measurement process is an integration process. For this reason, measurement systems using instantaneous sampling technique cause considerably high errors. In order to make more accurate flow measurement, numerical integration methods should be used. Literally, for numerical integration method, Rectangular, Trapezoidal, Simpson, Romberg and Gaussian Quadrature methods are suggested. Among these methods, trapezoidal rule method is quite easy to calculate and is notably more accurate and contains no restrictive conditions. Therefore, it is especially convenient for the portable flow volume measurement systems. In this study, the volume measurement of air which is flowing through a cross-section is achieved by using PLC ladder diagram. The measurements are done using two different approaches. Trapezoidal rule method is proposed to measure the flow sensor signal to minimize measurement errors due to the classical sampling method as a different approach. It is concluded that the trapezoidal rule method is more effective than the classical sampling.

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Development of composite load models of power systems using on-line measurement data

Cited by 15 publications

References 20 publications

A new approach to three-phase asynchronous motor model for electric power system analysis

A new approach to three-phase asynchronous motor model for electric power system analysis

A Bayesian Framework for Power System Components Identification

The Volume Measurement of Air Flowing through a Cross-section with PLC Using Trapezoidal Rule Method

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