Short-Circuit Current Contribution of Doubly-Fed Wind Turbines According to IEC and IEEE Standards

Jiménez-Buendía, Francisco; Honrubia-Escribano, A.; Lorenzo-Bonache, Alberto; Gómez‐Lázaro, Emilio

doi:10.1109/tpwrd.2020.3029403

Cited by 9 publications

(3 citation statements)

References 22 publications

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“…Finally, a scenario that simulates the operation of a wind power plant (WPP) is modeled and analyzed. Specifically, the WPP has a rated power of 50 MW and is composed of wind turbines connected to a collector busbar at a rated voltage of 20 kV, which is a common value for Spanish WPPs [24]. A substation transformer then elevates the voltage to the nominal value of the power system, 138 kV.…”

Section: Resultsmentioning

confidence: 99%

Advanced teaching method for learning power system operation based on load flow simulations

Honrubia-Escribano

Villena-Ruiz

Artigao

et al. 2021

Comp Applic In Engineering

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Current power systems are undergoing a rapid and complex transformation due to the integration of distributed generation. Load flow analysis is increasingly necessary to evaluate not only the operating point of the existing power system but also the design of future expansions. There are a wide variety of power system analysis packages used for load flow analysis. Of these, PowerFactory, one of the tools most widely used by network operators, is implemented for the present learning approach. In fact, one of the challenges for electric utility companies is the lack of experts who are familiar with this type of commercial tool. In the present work, several scenarios were defined and implemented using PowerFactory, covering common real‐life situations in power systems, such as the connection of a new line or a capacitor bank, or the installation of a renewable energy power plant. In this regard, the goal of the present teaching method was to complement the educational competences of power system engineers. As such, the proposed method was implemented in both an Electrical Engineering Degree course and a Master's Degree course in Industrial Engineering, where useful application feedback from students was obtained. Furthermore, the proposed approach is easily replicable for teaching/learning activities at other academic institutions.

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Section: Resultsmentioning

confidence: 99%

Advanced teaching method for learning power system operation based on load flow simulations

Honrubia-Escribano

Villena-Ruiz

Artigao

et al. 2021

Comp Applic In Engineering

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“…For the computation of the fundamental-frequency components of voltages and currents in steady state following symmetrical and unsymmetrical faults, the DFIG-based WTG is simply replaced with voltage source behind fixed impedance or fixed current source according to the IEC Standard that is typically available as a solver option in professional short circuit packages [15]. This way, the short circuit computation becomes a linear problem, however, the results are not accurate since the impact of the FRT control schemes and circuits is neglected [16]- [17]. By considering the converter control during FRT, new phasor domain models are proposed to represent the DFIG-based WTG with controlled current sources [18]- [19].…”

Section: Introductionmentioning

confidence: 99%

Short-Circuit Modeling of DFIG-Based WTG in Sequence Domain Considering Various Fault- Ride-Through Requirements and Solutions

Chang

Koçar

Farantatos

et al. 2023

IEEE Trans. Power Delivery

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The doubly fed induction generator (DFIG) based wind turbine generator (WTG) can activate different fault ride through (FRT) control schemes and circuits to comply with various grid code or utility interconnection requirements. These FRT solutions play a key role in the resulting fault current of the DFIG-based WTG as well as the voltages and currents distributed in faulted networks. This paper accounts for their impact by proposing a new generic sequence domain model of the DFIGbased WTG for static short circuit calculations. In this paper, the FRT configurations are classified into three types. The proposed model first calculates the positive-and negative-sequence current phasors under the specified FRT control. Then based on the control, the desired currents and voltages are calculated by explicit equations to determine whether the crowbar could operate during FRT operation. By comparing with detailed electromagnetic transient (EMT) simulations using an EPRI benchmark system, the proposed model, incorporated into an iterative steady state solver, is shown to be accurate to calculate voltage and current phasors in an efficient manner. The proposed model provides a rapid tool for short circuit computations and protective relaying studies considering various grid code requirements and FRT implementations.

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“…In a converter-dominated power system, the short-circuit current contributions are significantly lower due to the limited thermal capacity of the semiconductor devices [3]. As a result, the SCR values in a converter-dominated system will inevitably be lower when compared to its traditional synchronous-generator-based counterpart.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the use of short-circuit ratio as a system strength indicator in converter-dominated power systems

Damanik

Sakinci

Grdenić

et al. 2022

2022 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe)

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This paper investigates the applicability of shortcircuit ratio (SCR) as a system strength indicator in power systems with a high penetration of voltage source converters (VSCs). In power systems dominated by synchronous generators, the SCR has been widely used to estimate the system strength by using short-circuit level information obtained at the relevant bus. However, the emerging converter technology such as VSCs has different short-circuit characteristics from synchronous generators, in the sense that the short-circuit currents are typically lower in magnitude and more controllable. Moreover, SCR calculations are based on the static analysis of the power system, neglecting the dynamic and control aspects of VSCs. These aspects raise the question whether the SCR can still be used to evaluate system strength of converter-dominated systems. To this end, in this paper, the fundamental definition of the SCR is revisited, and factors influencing its applicability in converter-dominated power systems are listed. A case study is provided to demonstrate the limitation of the SCR in converter-dominated systems, and the impact of the control strategy on the dynamic performance of the system is also discussed.

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Short-Circuit Current Contribution of Doubly-Fed Wind Turbines According to IEC and IEEE Standards

Cited by 9 publications

References 22 publications

Advanced teaching method for learning power system operation based on load flow simulations

Advanced teaching method for learning power system operation based on load flow simulations

Short-Circuit Modeling of DFIG-Based WTG in Sequence Domain Considering Various Fault- Ride-Through Requirements and Solutions

Evaluation of the use of short-circuit ratio as a system strength indicator in converter-dominated power systems

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