New protection method for HVDC lines including cables

Takeda, H.; Ayakawa, H.; Tsumenaga, Masahiro; Sanpei, Masatoshi

doi:10.1109/61.473346

Cited by 79 publications

(36 citation statements)

References 1 publication

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“…However, it has no selectivity between DC line faults and AC system faults. Current differential protection is another solution for HVDC transmission line backup protection [12]. However, a time delay is essential to prevent mal-operation of this type of protection under external fault situations, due to the fluctuating transient current at the beginning of the fault.…”

Section: Introductionmentioning

confidence: 99%

A Directional Protection Scheme for HVDC Transmission Lines Based on Reactive Energy

Luo

Xiang

Shi

et al. 2016

IEEE Trans. Power Delivery

103

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High-voltage direct current (HVDC) transmission line protection is becoming increasingly desirable with the expanding worldwide popularity of HVDC technologies in recent years. This paper proposes a transmission line backup protection scheme based on the integral of reactive power for HVDC systems. The directional characteristics of reactive power flow are theoretically analyzed for internal and external faults, and these characteristics are used to construct a directional protection scheme. The Hilbert transform is adopted to calculate the reactive power, which ensures a continuous output of calculation results and improves the reliability of the protection. A bipolar 12-pulse HVDC test system based on the CIGRE benchmark is modeled using PSCAD/EMTDC, and extensive simulations of various fault situations are conducted to test the effectiveness of the proposed scheme. The simulation results show that the proposed protection scheme correctly identifies internal and external faults and performs well with different fault distances and fault resistances. Furthermore, the proposed protection is insensitive to the sampling frequency, making it practical for future applications.Index Terms-directional protection, Hilbert transform, HVDC system, power system protection, reactive energy.

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Section: Introductionmentioning

confidence: 99%

A Directional Protection Scheme for HVDC Transmission Lines Based on Reactive Energy

Luo

Xiang

Shi

et al. 2016

IEEE Trans. Power Delivery

103

View full text Add to dashboard Cite

show abstract

“…Most of studies presented in this field are related to the protection scheme of the system rather than focusing on DC fault detection. In [8], a protection scheme for HVDC line including cable has been proposed based on differential current methods. When a DC fault occurs in the VSC-HVDC transmission systems, their Insulated Gate Bipolar Transistors (IGBTs) which are not capable of clearing fault, will be by-passed and anti-parallel diodes conduct to feed the fault current.…”

Section: Introductionmentioning

confidence: 99%

A novel fault detection method for VSC-HVDC transmission system of offshore wind farm

Niaki

Karegar

Monfared

2015

International Journal of Electrical Power & Energy Systems

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“…HVDC transmission is a common technology for longdistance and high-capacity power transmission [1,2]. As an important part of a HVDC system, the grounding electrode provides the system with a path for DC current or unbalanced current [3,4].…”

Section: Introductionmentioning

confidence: 99%

Calculating current and temperature fields of HVDC grounding electrodes

Zhang

2015

J. Mod. Power Syst. Clean Energy

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Current field calculation based on the resistance network method (RNM) and temperature field calculation based on the finite volume method (FVM) can be used to evaluate the performance of high-voltage direct-current (HVDC) grounding electrodes. The main idea of the two methods is to transform an electric and temperature field problems to equivalent circuit problems by dividing the 3D soil space near the grounding electrode into a suitable number of contiguous and non-overlapped cells. Each cell is represented as a central node connecting to the adjacent cells. The resistance network formed by connecting all the adjacent cells together can be solved to calculate the current field. Under the same conditions, the results calculated by the RNM are consistent with the result by CDEGS, a widely used software package for current distribution and electromagnetic field calculation. Based on the finite volume method, the temperature field results are also calculated using time domain simulation.

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New protection method for HVDC lines including cables

Cited by 79 publications

References 1 publication

A Directional Protection Scheme for HVDC Transmission Lines Based on Reactive Energy

A Directional Protection Scheme for HVDC Transmission Lines Based on Reactive Energy

A novel fault detection method for VSC-HVDC transmission system of offshore wind farm

Calculating current and temperature fields of HVDC grounding electrodes

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