Analysis of Energy Dissipation in Resistive Superconducting Fault-Current Limiters for Optimal Power System Performance

Blair, Steven M.; Booth, Campbell; Singh, N. K.; Burt, Graeme; Bright, Chris

doi:10.1109/tasc.2011.2129518

Cited by 31 publications

(15 citation statements)

References 19 publications

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“…The rough estimation for the RSFCL size can be achieved based on design details of the RSFCL projects in the worldwide [35]. Accordingly in this paper, the RSFCL module installed in the transmission system with voltage rate of 34.5 kV and power rate of 50 MVA would be much less than 4 m in both diameter and height.…”

Section: Economic Feasibility Of the Rsfclmentioning

confidence: 99%

Multiobjective optimization in combinatorial wind farms system integration and resistive SFCL using analytical hierarchy process

2016

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This paper presents a positive approach for low voltage ride-through (LVRT) improvement of the permanent magnet synchronous generator (PMSG) based on a large wind power plant (WPP) of 50MW. The proposed method utilizes the conventional current control strategy to provide a reactive power requirement and retain the active power production during and after the fault for the grid codes compliance. Besides that, a resistive superconducting fault current limiter (RSFCL) as an additional self-healing support is applied outside the WPP to further increase the rated active power of the installation, thereby enhance the dc-link voltage smoothness, as well as the LVRT capability of the 50MW WPP. This is achieved by limiting the exceed fault current and diminishing the voltage dip level, leading to increase the voltage safety margin of the LVRT curve. Furthermore, the effect of the installed RSFCL on the extreme load reduction is effectively demonstrated. A large WPP has a complicated structure using several components, and the inclusion of RSFCL composes this layout more problematic for optimal performance of the system. Hence, the most-widely decision-making technique based on the analytic hierarchy process (AHP) is proposed for the optimal design of the combinatorial RSFCL and 50MW WPP to compute the three-dimensional alignment in Pareto front at the end of the optimization run. The numerical simulations verify effectiveness of the proposed approach, using the Pareto optimality concept.

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Section: Economic Feasibility Of the Rsfclmentioning

confidence: 99%

Multiobjective optimization in combinatorial wind farms system integration and resistive SFCL using analytical hierarchy process

2016

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“…In practice, although the wire diameter cannot be modified after fabrication, one can connect several wires in parallel to achieve the expected current limiting performance (Blair et al. 2011), which allows us to use the previous approaches.…”

Section: Sfcls and Topology Of The Power Systemmentioning

confidence: 99%

Power flow analysis and optimal locations of resistive type superconducting fault current limiters

et al. 2016

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Based on conventional approaches for the integration of resistive-type superconducting fault current limiters (SFCLs) on electric distribution networks, SFCL models largely rely on the insertion of a step or exponential resistance that is determined by a predefined quenching time. In this paper, we expand the scope of the aforementioned models by considering the actual behaviour of an SFCL in terms of the temperature dynamic power-law dependence between the electrical field and the current density, characteristic of high temperature superconductors. Our results are compared to the step-resistance models for the sake of discussion and clarity of the conclusions. Both SFCL models were integrated into a power system model built based on the UK power standard, to study the impact of these protection strategies on the performance of the overall electricity network. As a representative renewable energy source, a 90 MVA wind farm was considered for the simulations. Three fault conditions were simulated, and the figures for the fault current reduction predicted by both fault current limiting models have been compared in terms of multiple current measuring points and allocation strategies. Consequently, we have shown that the incorporation of the E–J characteristics and thermal properties of the superconductor at the simulation level of electric power systems, is crucial for estimations of reliability and determining the optimal locations of resistive type SFCLs in distributed power networks. Our results may help decision making by distribution network operators regarding investment and promotion of SFCL technologies, as it is possible to determine the maximum number of SFCLs necessary to protect against different fault conditions at multiple locations.

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“…In this description (9), three possible states for superconductor are; 1) superconducting state at a temperature and a current under the critical rate; 2) flux flow state at a current over the critical value but temperature under the critical rate; and 3) normal conductive state at a temperature higher the critical amount. The total fault energy, Q sc dissipated in the HTS tapes is calculated using (10), where ∆t sc is the duration of the fault [20]. …”

Section: Electro-thermal Modeling Of a Rsfclmentioning

confidence: 99%

Optimal analysis of resistive superconducting fault current limiters applied to a variable speed wind turbine system

Moghadasi

Sarwat

2015

SoutheastCon 2015

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This paper describes the effective study in optimal design of a combinatorial resistive superconducting fault current limiter (RSFCL) and a wind turbine (WT) system. In the proposed scheme, the permanent magnet synchronous generator (PMSG) based on coordinated control strategy is also considered to provide a reactive power support as well as retaining the active power production during and after the fault condition according to the certain grid code requirements. The comprehensive electro-thermal model demonstrating the RSFCL damping performance is applied as additional self-healing support outside the WPP to attenuate exceed current in faulty conditions. The results show that the optimal selection of RSFCL can increase the active power generation capacity of the WT, thereby enhancing the dc-link voltage smoothness as well as the low voltage ride-through (LVRT) capability of the wind farm. However, any alteration in the dimensions of the superconducting wires as well as fault durations can influence both the voltage reduction and the reactive power supplied by the WT at the point of common coupling (PCC). Thus, the numerical analysis is implemented to show the pros and cons of variation of RSFCL parameters on the optimal performance of WT system. Index Terms--Lowvoltage ride-through (LVRT), Multicriteria decision making (MCDM), Superconducting fault current limiter (SFCL), Wind turbine (WT).

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Analysis of Energy Dissipation in Resistive Superconducting Fault-Current Limiters for Optimal Power System Performance

Cited by 31 publications

References 19 publications

Multiobjective optimization in combinatorial wind farms system integration and resistive SFCL using analytical hierarchy process

Multiobjective optimization in combinatorial wind farms system integration and resistive SFCL using analytical hierarchy process

Power flow analysis and optimal locations of resistive type superconducting fault current limiters

Optimal analysis of resistive superconducting fault current limiters applied to a variable speed wind turbine system

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