Optimal location assignment and design of superconducting fault current limiters applied to loop power systems

Hongesombut, Komsan; Mitani, Yasunori; Tsuji, Kiichiro

doi:10.1109/tasc.2003.812901

Cited by 75 publications

(21 citation statements)

References 1 publication

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“…J c is the critical current density, T c is the critical temperature and n the exponent of E-J power law relation [28]. The resistive behavior of SCL can also be represented by a time-variant resistance [29][30][31], as described by Equation (16). This is the model adopted by this paper.…”

Section: Resistive Superconducting Current Limiter (Scl)mentioning

confidence: 99%

“…R 0 is the maximum SCL resistance and τ q is the time constant of quenching state. This paper adopts the transition time from the superconducting to normal state, τ q , equal 1 ms [29,31,32]. After time t 2 , the currents fall below their critical value and the SCL is able to return to superconducting state as long as its temperature decreases.…”

Section: Resistive Superconducting Current Limiter (Scl)mentioning

confidence: 99%

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Enhancing LVRT of DFIG by Using a Superconducting Current Limiter on Rotor Circuit

et al. 2015

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This paper have studied the dynamic of a 2.0 MW Doubly Fed Induction Generator (DFIG) during a severe voltage sag. Using the dynamic model of a DFIG, it was possible to determine the current, Electromagnetic Force and flux behavior during three-phase symmetrical voltage dip. Among the technologies of wind turbines the DFIG is widely employed; however, this machine is extremely susceptible to disturbances from the grid. In order to improve DFIG Low Voltage Ride-Through (LVRT), it is proposed a novel solution, using Superconducting Current Limiter (SCL) in two arrangements: one, the SCL is placed between the machine rotor and the rotor side converter (RSC), and another placed in the RSC DC-link. The proposal is validated through simulation using PSCAD TM /EMTDC TM and according to requirements of specific regulations. The analysis ensure that both SCL arrangements behave likewise, and are effective in decrement the rotor currents during the disturbance.

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Section: Resistive Superconducting Current Limiter (Scl)mentioning

confidence: 99%

Section: Resistive Superconducting Current Limiter (Scl)mentioning

confidence: 99%

Enhancing LVRT of DFIG by Using a Superconducting Current Limiter on Rotor Circuit

et al. 2015

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“…The fault current level increases and may exceeds the interrupting ratings of circuit breakers at some inter-bus transmission lines. Reference [32] applied micro-genetic algorithm combined with a hierarchical genetic algorithm to simultaneously search for the optimal locations (branches) in the transmission network, and the smallest FCL capacity. With this method, the fault currents throughout the transmission network can be limited into an acceptable regime to avoid upgrading a large number of circuit breakers.…”

Section: In Transmission Networkmentioning

confidence: 99%

State of the art of Fault Current Limiters and their applications in smart grid

Zhang

Dougal

2012

2012 IEEE Power and Energy Society General Meeting

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We summarize the state of the art of Fault Current Limiters (FCL), focusing on devices in or near to field test status, and then, based on capabilities and characteristics of FCLs and smart grid, assign the various types to the most appropriate nodes in a smart grid.: 1) solid-state FCLs can be installed at microgrid and renewable energy resource feeders to replace circuit breaker and maintain protection coordination of the transmission network; 2) resistive superconducting FCL, saturated iron-core superconducting FCL and dynamic FCL can be installed at distribution substations to maintain downstream over-current protection without current harmonics disturbance; and 3) resistive and saturated iron-core superconducting FCLs can be installed at optimum locations in the transmission network to reduce fault currents to within a tolerable range when a new power plant is installed. With these placements, we can make full use of the advantages of smart grid's communication network and different characteristics of FCL devices in different categories to offer a more flexible and reliable protection for future power grid.

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“…The criteria that are used in numerous cases for specifying the optimal location of SFCLs consist of total SFCL capacity [7], sensitivity [8], and fault current reduc tion [9]. References [7] and [10] describe how genetic algorithm can be used to find the optimal placements of the minimum number of FCLs to meet maximum fault current objectives. After specifying a maximum desired fault current, combinations of FCLs in differ ent locations are compared to find the optimal place ments.…”

Section: Introductionmentioning

confidence: 99%

INSGA-II implementation for optimal placement and design of flux-lock type superconducting fault current limiter with tap changer for improving distribution system reliability

Hashemi

Valipour

Hashemi³

2015

Russ. Electr. Engin.

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Improved non dominated sorting genetic algorithm II (INSGA II) implementation for the assignment of the optimal location and tap changer adjustment related to flux lock type superconducting fault current limiter with tap changer (TC FLSFCL) is presented in this paper. TC FLSFCL is a flexible SFCL that has preference over previous SFCLs. In this type of SFCL the current limiting characteristics are improved and the fault current limiting level during a fault period can be adjusted by controlling the current in the third winding, which also makes the magnetic field apply to the high Tc superconducting (HTSC) ele ment. Three objective functions, based on reliability index, reduction of fault current, and number of installed TC FLSFCL, are systematized and improved non dominated sorting genetic algorithm II (INSGA II) style is then formed in the search for the best location and tuning of the tap changer of TC FLSFCL to meet the fitness requirements. A decisionmaking procedure based on the technique for order preference by similarity to ideal solution (TOPSIS) is used for finding the best compromise solution from the set of Pareto solutions obtained by INSGA II. In a distribution network as bus 4 of Roy Billinton test system (RBTS), comparative analysis of the results obtained from the application of the resistive SFCL (RSFCL) and TC FLSFCL is pre sented. The results show that optimal placement of TC FLSFCL compared with RSFCL can improve reli ability index and fault current reduction index with a less number.

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Optimal location assignment and design of superconducting fault current limiters applied to loop power systems

Cited by 75 publications

References 1 publication

Enhancing LVRT of DFIG by Using a Superconducting Current Limiter on Rotor Circuit

Enhancing LVRT of DFIG by Using a Superconducting Current Limiter on Rotor Circuit

State of the art of Fault Current Limiters and their applications in smart grid

INSGA-II implementation for optimal placement and design of flux-lock type superconducting fault current limiter with tap changer for improving distribution system reliability

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