A New Whole-Line Quick-Action Protection Principle for HVDC Transmission Lines Using One-End Current

Song, Guobing; Chu, Xiangxiang; Gao, Shuping; Kang, Xiaoning; Jiao, Zaibin

doi:10.1109/pesgm.2018.8586307

Cited by 36 publications

(81 citation statements)

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“…( According to the attenuation characteristic of HVDC system transmission lines and boundary elements to fault transient signals [6,7,22], when an internal fault occurs, the fault traveling wave reach IED1 and IED2 by the transmission line attenuation, as a consequence, the attenuation amplitudes of the transient signal measured from IED1 and IED2 are small.…”

Section: Plos Onementioning

confidence: 99%

“…These methods can effectively identify internal and external faults, but the threshold setting has no theoretical basis and requires numerous simulation verification. Literatures [6,7] propose to use the single-ended specific frequency signal to construct the fault identification criteria for internal and external faults, but this method is greatly affected by the trigger angle and commutation overlap angle of the control system. S-transform is applied in some references to extract measurement wave impedance [8] and wave impedance phase [9] to realize internal and external fault identification, but such algorithms have higher requirements on sampling frequency and hardware equipment.…”

Section: Introductionmentioning

confidence: 99%

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A novel intelligent fault identification method based on random forests for HVDC transmission lines

Wang

et al. 2020

PLoS ONE

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In order to remedy the current problem of having been buffeted by competing requirements for both protection sensitivity and quick reaction of High Voltage Direct Current (HVDC) transmission lines simultaneously, a new intelligent fault identification method based on Random Forests (RF) for HVDC transmission lines is proposed. S transform is implemented to extract fault current traveling wave of 8 frequencies and calculate the fluctuation index and energy sum ratio, in which the wave index is used to identify internal and external faults, and energy sum ratio is used to identify the positive and negative pole faults occurred on the transmission line. The intelligent fault identification model of RF is established, and the fault characteristic sample set of HVDC transmission lines is constructed by using multi-scale S transform fluctuation index and multi-scale S-transform energy sum ratio. Training and testing have been carried out to identify HVDC transmission line faults. According to theoretical researches and a large number of results of simulation experiments, the proposed intelligent fault identification method based on RF for HVDC transmission lines can effectively solve the problem of protection failure caused by inaccurate identification of traditional traveling wave wavefront or wavefront data loss. It can accurately and quickly realize the identification of internal and external faults and the selection of fault poles under different fault distances and transitional resistances, and has a strong ability to withstand transitional resistance and a strong ability to resist interference.

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Section: Plos Onementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel intelligent fault identification method based on random forests for HVDC transmission lines

Wang

et al. 2020

PLoS ONE

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“…As a core measuring equipment of HVDC, the optical current transformer is used to measure current including DC line current, pole bus current, valve high-side current, high-side current and imbalance current between the capacitor of AC or DC filter [5] and provide accurate and reliable measurement data for DC control and protection system [6]. It could have significant impact on performance of the DC control and protection system [7]. The HVDC control and protection system [8] cannot be field verified without field simulation for the optical current transformer secondary signal.…”

Section: Introductionmentioning

confidence: 99%

Study on Method for Field Secondary Signal Simulation of Optical Current Transformer

Wu¹,

Hong²,

Li³

et al. 2019

Proceedings of the 2nd International Conference on Electrical and Electronic Engineering (EEE 2019)

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The optical current transformer play an important role on the security and stability of the power system especially HVDC. The HVDC control and protection system cannot be field verified without field simulation for the optical current transformer secondary signal. But the existing method for field simulation of optical current transformer is lacking for easy to implement and meeting requirement. This paper proposed a novel method for field secondary signal simulation of optical current transformer. The advantage of the method are that not need to explain the photoelectric conversion protocol, easy to implement and meeting requirement, low security risk, and low cost. The field test device has been developed with secondary signal simulation quantity of optical current transformer. Its validity was verified by field testing of secondary signal simulation of optical current transformer in echeng convert station of jiang-cheng ±500kV HVDC transmission project.

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“…Using one‐end current, a novel non‐unit protection has been proposed to meet the requirement of HVDC transmission systems in Ref. . In Ref.…”

Section: Introductionmentioning

confidence: 99%

A particular AC component protection scheme for bipolar HVDC transmission lines

Yang

Tai

Fan

et al. 2018

IEEJ Transactions Elec Engng

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The line protection methods for high-voltage direct current (HVDC) transmission system in engineering applications are poor in sensitivity and reliability. In this paper, we introduce a new notion of energy, namely a particular AC energy, based on which a particular AC component protection scheme is proposed. The scheme is comprised of start-up criterion, fault identification criterion, and faulty pole identification criterion. The start-up criterion is based on the fact that particular AC component measured at both terminals increases rapidly when a fault occurs. The particular AC energy calculated by particular AC component at both terminals behaves differently in the face of an internal or external fault, and this characteristic is applied to construct the fault identification criterion. The particular AC energy on the non-fault line is smaller than that on the faulty line, which can be used to establish the faulty pole identification criterion. Compared with other energy-based protections, the proposed method does not require data synchronization and is not affected by the distributed capacitive current of the transmission line. Comprehensive simulation experiments including real-time digital simulator (RTDS) tests indicate that this method is able to operate reliably under various fault conditions with satisfactory accuracy and high sensitivity.

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A New Whole-Line Quick-Action Protection Principle for HVDC Transmission Lines Using One-End Current

Cited by 36 publications

References 0 publications

A novel intelligent fault identification method based on random forests for HVDC transmission lines

A novel intelligent fault identification method based on random forests for HVDC transmission lines

Study on Method for Field Secondary Signal Simulation of Optical Current Transformer

A particular AC component protection scheme for bipolar HVDC transmission lines

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