Error compensation in distance relays caused by wind power plants in the power grid

Guajardo, Luis Alonso Trujillo; Enrı́quez, Arturo Conde; Leonowicz, Zbigniew

doi:10.1016/j.epsr.2013.08.009

Cited by 13 publications

(2 citation statements)

References 12 publications

(24 reference statements)

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“…Equation set from (1) to (9) allows to obtain machine rotor speed and position while known its terminal voltage, which must be calculated from system electrical network solution by using load flow equations. For this, nonlinear differential and algebraic equations solving numerical methods can be used, which allow calculating and performing system voltage and frequency behavior in disturbances presence (15) is obtained from (4) and ( 5) which means currents can be calculated as follows:…”

Section: Synchronous Generator Behaviormentioning

confidence: 99%

Frequency response analysis under faults in weak power systems

Arcia

Sánchez

Herrera³

et al. 2022

IJECE

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The renewable energy sources (RESs) projects are solutions with environmental benefits that are changing the traditional power system operation and concept. Transient stability analysis has opened new research trends to guarantee a secure operation high penetration. Problems such as frequency fluctuations, decoupling between generator angular speed, network frequency fluctuation and kinetic energy storing absence are the main non-conventional RESs penetration in power systems. This paper analyzes short-circuit influence on frequency response, focusing on weak distribution networks and isolated, to demonstrate relevance in frequency stability. A study case considered a generation outage and a load input to analyze frequency response. The paper compares frequency response during a generation outage with a short-circuit occurrence. In addition, modular value and angle generator terminal voltage affectation by electric arc and network ratio R⁄X, failure type influence in power delivered behavior, considering fault location, arc resistance and load. The arc resistance is defined as an added resistance that appears during failure and influences voltage modulus and angle value results showing that intermittent non-conventional RES participation can lead to frequency fluctuations. Results showed that arc resistance, type of failure, location and loadability determine the influence of frequency response factors in weak power systems.

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Section: Synchronous Generator Behaviormentioning

confidence: 99%

Frequency response analysis under faults in weak power systems

Arcia

Sánchez

Herrera³

et al. 2022

IJECE

View full text Add to dashboard Cite

show abstract

“…To fulfill the LVRT requirements, rotor side of DFIG would overcurrent in the case when the grid voltage sagged [3], the rapid increasing of current in rotor side, at the same time, would lead to DC side voltage of the excitation converter soar and finally causes an oscillation of the current, and both the active and reactive power of the converter [4,5]. Current strategies for coping with LVRT problems are mainly focus on rotor side protection with crowbar, new converter topology developing and advanced excitation algorithms applying.…”

Section: Introductionmentioning

confidence: 99%