Real-time power angle determination of salient-pole synchronous machine based on air gap measurements

Despalatović, Marin; Jadrić, Martin; Terzić, Božo

doi:10.1016/j.epsr.2008.03.013

Cited by 23 publications

(17 citation statements)

References 6 publications

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“…For this purpose, the air-gap and terminal voltage signals are used. Using the method described in [19], a very good accuracy of the power angle determination is achieved.…”

Section: A Measurement Configurationmentioning

confidence: 97%

“…One can see that the fitting curves, determined by the linear least-squares fitting technique, are well matched with the estimated inductances at all the considered points. This is due to a good accuracy of the power angle measurements by applying the method described in [19]. …”

Section: B Online Estimation Of Saturated Synchronous Inductancesmentioning

confidence: 99%

“…The isolation amplifier and all the transducers have current outputs. The air-gap sensor signal (v ag ), originally used for the air-gap monitoring, is also used in this study for the power angle (δ) measurement [19]. After conditioning, all the signals are inputted in a data acquisition unit, which consists of 12-bit Peripheral Component Interconnect (PCI) bus data acquisition card and a personal computer (PC).…”

Section: A Measurement Configurationmentioning

confidence: 99%

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Modeling of Saturated Synchronous Generator Based on Steady-State Operating Data

Despalatović

Jadrić

Terzić

2012

IEEE Trans. on Ind. Applicat.

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This paper deals with modeling of the saturated salient-pole synchronous machines using analytical saturation model obtained based on measurements of steady-state variables. Two different saturation models are considered in order to investigate impact of the reciprocity property of the mutual inductance between d-and q-axis on transients of the saturated machine. It is shown that the simpler saturation model, which is obtained by neglecting the reciprocity property condition, may be used to model saturation in both steady-state and transient conditions. The developed model of the saturated machine is validated with measurements performed on the 34-MVA hydroturbine generator.

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“…For this purpose, the air-gap and terminal voltage signals are used. Using the method described in [19], a very good accuracy of the power angle determination is achieved.…”

Section: A Measurement Configurationmentioning

confidence: 97%

Section: B Online Estimation Of Saturated Synchronous Inductancesmentioning

confidence: 99%

Section: A Measurement Configurationmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of Saturated Synchronous Generator Based on Steady-State Operating Data

Despalatović

Jadrić

Terzić

2012

IEEE Trans. on Ind. Applicat.

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“…where δ m is the measured power angle which can be obtained by installing a sensor in the rotor of the machine to calculate the angular displacement of the rotor with respect to the terminal voltage in phase a [13], [14].…”

Section: Parameter Estimationmentioning

confidence: 99%

On-line parameter estimation of saturated synchronous machines

Valverde

Kyriakides

Heydt

et al. 2011

2011 IEEE Power and Energy Society General Meeting

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This paper presents a novel method based on the Unscented Kalman Filter (UKF) to estimate the saturated parameters of synchronous machines. The proposed methodology uses voltage and current measurements taken from the stator and the field windings to update the parameters of the synchronous machine during steady state operation. The method also utilizes measurements of the power angle in order to relate the measurements (in abc components) with the voltage equations in the qd0 reference frame. The proposed methodology has been tested and validated for a saturated synchronous machine.

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“…The load angle measurement for detecting the rotor position based on a photoelectric sensor mounted on the stator is proposed in [12]. Air gap sensor for detection of rotor position was proposed in [13]. Disadvantage of these two methods is the mounting of encoder or sensor on the generator.…”

Section: A 89mentioning

confidence: 99%

Determination of Load Angle for Salient-pole Synchronous Machine

Sumina¹,

Šala²,

Malarić³

2010

Measurement Science Review

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This paper presents two methods for load angle determination for salient-pole synchronous generator. The first method uses optical encoder to detect the rotor position. In some cases the end of the rotor shaft is not free to be used and mounting of an encoder is impossible. Therefore, the second method proposes estimation of the load angle based on the measured electrical values that have been already used in excitation control system of the synchronous generator. Estimation method uses corresponding voltage-current vector diagram and parameters of the synchronous generator, transformer and transmission lines. Both methods were experimentally verified on the digital control system and synchronous generator connected to power system. The estimation and measured results were compared. The accuracy of load angle estimation method depends on voltage and current measurement accuracy as well as generator, transformer and transmission line parameter accuracy. The estimation method gives satisfactory accuracy for load angles less than 120º el. Thus, it can be applied in excitation control system to provide stable work of synchronous generator in under-excitation operating area.

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Real-time power angle determination of salient-pole synchronous machine based on air gap measurements

Cited by 23 publications

References 6 publications

Modeling of Saturated Synchronous Generator Based on Steady-State Operating Data

Modeling of Saturated Synchronous Generator Based on Steady-State Operating Data

On-line parameter estimation of saturated synchronous machines

Determination of Load Angle for Salient-pole Synchronous Machine

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