Some new results of electric power science

An, Mei

doi:10.1007/s11431-011-4459-0

Cited by 3 publications

(1 citation statement)

References 37 publications

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“…Flexible Alternating Current Transmission System (FACTS) has been a hot R&D topic for power systems along with the rapid development of power electronics since Dr. N. G. Hingorani originally defined the concept at the Electric Power Research Institute in USA. In recent years, the issues of enhancing power system controllability, stability as well as increasing power transfer capability while significantly de-creasing system losses, etc, have become more and more important in the context of a renewable energy development and power grid interconnection [1].…”

Section: Introductionmentioning

confidence: 99%

Fault component integrated impedance-based pilot protection scheme for EHV/UHV transmission line with thyristor controlled series capacitor (TCSC) and controllable shunt reactor (CSR)

Jiale

Kang

et al. 2012

Sci. China Technol. Sci.

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This paper analyzes the fundamental frequency impedance characteristic of a thyristor controlled series capacitor (TCSC) and presents a novel transmission line pilot protection scheme based on fault component integrated impedance (FCII) calculated for a transmission line with TCSC and controllable shunt reactor (CSR). The FCII is defined as the ratio of the sum of the fault component voltage phasors of a transmission line with TCSC and CSR to the sum of the fault component current phasors where all the phasors are determined at both line's terminals. It can be used to distinguish internal faults occurring on the line from external ones. If the fault is an external one the FCII reflects the line's capacitive impedance and has large value. If the fault is an internal one on the line the FCII reflects the impedance of the equivalent system and the line and is relatively small. The new pilot protection scheme can be easily set and has the fault phase selection ability and also it is not affected by the capacitive current and the fault transition resistance. It is not sensitive to compensation level and dynamics of TCSC and CSR. The effectiveness of the new scheme is validated against data obtained in ATP simulations and Northwest China 750 kV Project. EHV/UHV, transmission line, pilot protection, fault component integrated impedance (FCII), thyristor controlled series capacitor (TCSC), controllable shunt reactor (CSR)Citation:He S E, Suonan J L, Kang X N, et al. Fault component integrated impedance-based pilot protection scheme for EHV/UHV transmission line with thyristor controlled series capacitor (TCSC) and controllable shunt reactor (CSR).

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Section: Introductionmentioning

confidence: 99%

Fault component integrated impedance-based pilot protection scheme for EHV/UHV transmission line with thyristor controlled series capacitor (TCSC) and controllable shunt reactor (CSR)

Jiale

Kang

et al. 2012

Sci. China Technol. Sci.

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Direct power control for three-level PWM rectifier based on hysteresis strategy

Shi

Wang

Zhang

et al. 2012

Sci. China Technol. Sci.

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Aerodynamics Research of Thermal Fluid Circulation in a Heated Cavity

Zhao¹

2014

AMM

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In this paper, numerical simulation of natural convection in a closure square cavity with heating source on the basement is carried out using thermal lattice Boltzmann method. The purpose of this work is to analysis the physics of mass and heat transfer in such a condition. For different Rayleigh numbers, the relative heating area ratio is changed in the range of 0.1-1.0, correspondingly. It is found that the flow pattern is symmetrical for increases from 103to 106, and the boundary layers at low temperature become thinner, also the circulation rate is higher. For a special Rayleigh number, is as a monotone increment function of relative heating area ratio, and the value of which almost increases linearly when the area is below 0.8, and then reach to its maximum exponentially.

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Some new results of electric power science

Cited by 3 publications

References 37 publications

Fault component integrated impedance-based pilot protection scheme for EHV/UHV transmission line with thyristor controlled series capacitor (TCSC) and controllable shunt reactor (CSR)

Fault component integrated impedance-based pilot protection scheme for EHV/UHV transmission line with thyristor controlled series capacitor (TCSC) and controllable shunt reactor (CSR)

Direct power control for three-level PWM rectifier based on hysteresis strategy

Aerodynamics Research of Thermal Fluid Circulation in a Heated Cavity

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