Optimization Design of a High-Coupling Split Reactor in a Parallel-Type Circuit Breaker

Yuan, Fan; Tang, Bo; Ding, Can; Qin, Shihong; Huang, Li; Yuan, Zhao

doi:10.1109/access.2019.2900697

Cited by 11 publications

(8 citation statements)

References 10 publications

(13 reference statements)

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“…A mature optimization design approach of HCSR has been proposed based on "equal height and heat flux of the coaxial encapsulations" [4] [15], and the calculations in this section are based on detailed structure parameters in the preliminary design of HCSR.…”

Section: Resultsmentioning

confidence: 99%

“…In order to explain the overvoltage problems inside HCSR, the structure of HCSR is introduced firstly. To achieve a higher coupling coefficient, dry-type air core reactor is selected for designing HCSR, and it has multiple coaxial encapsulations [15]- [17]. The encapsulation is a coil covered with insulating materials, and there are air ducts between adjacent encapsulations.…”

Section: A Brief Introduction Of Fcl and Potential Distribution In Hcsrmentioning

confidence: 99%

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Voltage Distribution Analysis of High Coupled Split Reactor in 500 kV AC Fault Current Limiter

Yuan

et al. 2020

IEEE Access

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With the increase of short circuit current, measures should be taken to reduce the impact. Among various measures, a new technique to interrupt or limit current is proposed and applied to power grid based on high coupled split reactor (HCSR). As the key equipment in new technique, the insulation design of HCSR is a priority. Previous works mainly involve voltage across HCSR in different working states, and take the whole voltages as design requirements. It is rough and takes no account of voltage distribution inside HCSR, thus not suitable for insulation design of HCSR. In order to analyze the overvoltage problems and determine insulation demands for HCSR, this paper establishes the equivalent circuit model in turn unit to calculate the voltage distribution inside HCSR, which is simplified and accurate enough for HCSR. A 500 kV AC fault current limiter is briefly introduced, and voltages between turns or arms in HCSR are obtained. The voltage between turns are evenly distributed and voltage between arms are very low under switching impulse. As for lightning impulse, maximum turn-to-turn voltages mainly appear in the end of encapsulations, and the voltage between arms in current sharing state is considerable. This paper gives the calculation method and general rules of voltage distribution inside HCSR, and it has great significance for the insulation design of HCSR.

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Section: Resultsmentioning

confidence: 99%

Section: A Brief Introduction Of Fcl and Potential Distribution In Hcsrmentioning

confidence: 99%

Voltage Distribution Analysis of High Coupled Split Reactor in 500 kV AC Fault Current Limiter

Yuan

et al. 2020

IEEE Access

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“…The dry type air core smoothing reactor is mainly composed by several coaxial encapsulation coils, which are parallel connected in electric. The spider arm locates the top and bottom of encapsulation coils, which plays the role of distributing current and strengthening the coils, and the sustaining bar locates between the adjacent encapsulation coils, which plays the role of insulation and strengthen the coils [10]. The parameters of the smoothing reactor are given in Table I, the metal conductor material of coils is copper.…”

Section: The Basic Structure and Parametersmentioning

confidence: 99%

The Optimization Design of Sound Arrester for the Dry Type Air Core Smoothing Reactor Based on the Multi‐Physical Field Coupling Method

Yuan

Yang

Qin

et al. 2021

IEEJ Transactions Elec Engng

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In this paper, according to the parameters of the dry type air core smoothing reactor, the stress-sound field and fluid-temperature field coupling simulation model is established, the detailed temperature field and sound field distribution are obtained, and the influence law of sound arrester on the sound pressure level and temperature rise are analyzed. It can be found that the temperature rise of encapsulation coils are significantly increased when adding the sound arrester, and the reasons are given by analyzing the fluid velocity in the air ducts. Meanwhile, the optimization design method about sound arrester is proposed based on the orthogonal experiment design and finite element method. The influence curve and contribution rate of sound arrester on the pressure level and temperature rise are analyzed, and the optimal structural parameters of the sound arrester are obtained. The results show that the optimization method can significantly reduce the temperature rise and sound pressure level simultaneously, and improving the operational reliability of the smoothing reactor.

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“…All of these FCLs face common challenges such as low economic efficiency and low reliability with respect to high-voltage applications. In recent years, a dry air-core highly coupled split reactor (HCSR) was developed and used to make current distribute evenly in a parallel-connected circuit breaker (CB) for a higher interruption capacity, which was validated in a 252 kV power system [12][13][14][15][16][17][18]. Based on the HCSR and fast vacuum switches, our project team proposed a scheme of a new FCL, as shown in Figure 1 [19].…”

Section: Introductionmentioning

confidence: 99%

Analysis of influence of a novel inductive fault current limiter on the circuit breaker in 500 kV power system

et al. 2021

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A contribution to the engineering application of a proposed 500-kV fault current limiter (FCL) is presented. A new type of FCL composed of a highly coupled split reactor (HCSR) and fast switches is proposed. When the circuit breaker (CB) in series with the FCL in the 500-kV power system interrupts the limited fault current, the rate of rise of the recovery voltage (RRRV) reaches a value much higher than the rated value. Based on a simplified equivalent single-phase circuit, the influence of the new FCL on the interruption procedure of the CB is simulated and discussed. The simulation results show that the high RRRV is caused by highfrequency resonant oscillations between the HCSR and its parasite capacitance. Analysis indicates that when the reactance of the FCL is close to the short circuit reactance of the system, the RRRV will reach the highest value. To solve this issue, we proposed installing a shunt capacitor with the FCL. Simulation results showed that the RRRVunder all fault modes could be restrained to below the rated value by introducing a certain shunt capacitor.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Optimization Design of a High-Coupling Split Reactor in a Parallel-Type Circuit Breaker

Cited by 11 publications

References 10 publications

Voltage Distribution Analysis of High Coupled Split Reactor in 500 kV AC Fault Current Limiter

Voltage Distribution Analysis of High Coupled Split Reactor in 500 kV AC Fault Current Limiter

The Optimization Design of Sound Arrester for the Dry Type Air Core Smoothing Reactor Based on the Multi‐Physical Field Coupling Method

Analysis of influence of a novel inductive fault current limiter on the circuit breaker in 500 kV power system

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