A fast boundary protection for an AC transmission line connected to an LCC-HVDC inverter station

Liu, Zhen; Gao, Houlei; Luo, Sibei; Zhao, Le; Feng, Yuanjing

doi:10.1186/s41601-020-00175-7

Cited by 8 publications

(4 citation statements)

References 33 publications

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“…One of the most critical issues in an HVDC transmission system is fault identification and classification [3].The entire power system could fail if the fault current on the HVDC transmission link is not interrupted for an extended period. It is challenging to distinguish the faulty system from the healthy components if proper methodology is not used [8,9]. To restore system stability and limit economic losses, the type of fault and its classification on the transmission line should be determined as soon as possible.…”

Section: Introductionmentioning

confidence: 99%

A simple decision tree-based disturbance monitoring system for VSC-based HVDC transmission link integrating a DFIG wind farm

Damala

Patnaik²,

Dash

2022

Prot Control Mod Power Syst

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Fault detection and classification is a key challenge for the protection of High Voltage DC (HVDC) transmission lines. In this paper, the Teager–Kaiser Energy Operator (TKEO) algorithm associated with a decision tree-based fault classifier is proposed to detect and classify various DC faults. The Change Identification Filter is applied to the average and differential current components, to detect the first instant of fault occurrence (above threshold) and register a Change Identified Point (CIP). Further, if a CIP is registered for a positive or negative line, only three samples of currents (i.e., CIP and each side of CIP) are sent to the proposed TKEO algorithm, which produces their respective 8 indices through which the, fault can be detected along with its classification. The new approach enables quicker detection allowing utility grids to be restored as soon as possible. This novel approach also reduces computing complexity and the time required to identify faults with classification. The importance and accuracy of the proposed scheme are also thoroughly tested and compared with other methods for various faults on HVDC transmission lines.

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Section: Introductionmentioning

confidence: 99%

A simple decision tree-based disturbance monitoring system for VSC-based HVDC transmission link integrating a DFIG wind farm

Damala

Patnaik²,

Dash

2022

Prot Control Mod Power Syst

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“…In the traditional HVDC system, the Line-Commutated Converter (LCC) is widely adopted [20]. Between the valve side of the converter transformer and the ac side of the converter, there is only equivalent inductance of the converter transformer.…”

Section: Introductionmentioning

confidence: 99%

Capacitive Filter Based HVDC Converter for Reducing the Vibration and Noise of Converter Transformer

Zhao

Luo

et al. 2022

IEEE Access

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Harmonic currents generated by converters in the HVDC system flow into the converter transformer. The harmonic current and voltage in the converter transformer will cause electromagnetic vibration of windings and iron core, which result in serious noise pollution, power loss and electrical stressing. In this paper, a capacitive filter based HVDC converter is proposed to reduce the vibration and noise of converter transformer. First, the topology of the HVDC system is introduced, and its harmonic characteristics are analyzed. Then, the noise reduction mechanism by using capacitive filter is revealed by analyzing the relationship among harmonics, vibration, and noise of the converter transformer. Finally, the experimental platform of the capacitive filter based HVDC system is built. Moreover, the vibration and noise of the converter transformers are measured in a semi-anechoic chamber, with the use of line-commutated converter (LCC) and capacitive filter based HVDC converter respectively. The experimental results show that the vibration and noise of converter transformer using the capacitive filter are significantly suppressed compared with that using the LCC.

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“…To adapt to the profound changes in energy patterns in the future, high-voltage direct current (HVDC) transmission (Muniappan, 2021) has been vigorously developed due to its outstanding performance in long-distance transmission and the optimal allocation of energy resources in a wide area (Liu et al, 2020). In particular, the advantages of HVDC transmission mainly include: 1) Larger transmission capacity, longer transmission distance, and faster adjustment of the size and direction of transmission power; 2) DC transmission makes full use of the line corridor where the width of the line corridor is about half of that of the AC transmission line; 3) For large-sacle power grids, HVDC can realize interconnected power supply between large power grids through DC transmission without interfering and affecting each other.…”

Section: Introductionmentioning

confidence: 99%

Optimal Operation and Control Design of DC Arrester for Renewable Energy Transmission

Feng¹,

Li²,

Gao³

et al. 2021

Front. Energy Res.

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The trip probability of transmission line under lightning stroke is rapidly increasing under complex weather conditions when large-scale renewable energy is intergrated with modern power grid. Line arrester plays a critical role in reducing lightning damage and economic losses, in which DC reference voltage is a critical parameter to evaluate line arresters. Hence, a set of on-site DC test system of transmission line arresters is developed to realize the DC reference voltage test in this article. The output DC voltage of the test system is continuously adjustable (0–200 kV), while its rated power and the maximum output current are set to 400 W and 2 mA, respectively. Furthermore, the system is powered by a lithium battery instead of a 220/380 V AC energy source. It employs split design and integrating assembly on-site that reduces the total weight by 36.7%, which considerably decreases the demand for the space of test site. Besides, the weights of control cabinet, multiplying cylinder, and energy source are reduced by 60, 54.55, and 33.33%, respectively. Meanwhile, the Bluetooth remote control module is used to effectively ensure the safety of test personnel. This system accomplishes DC reference voltage tests without removing line arresters on site, which can effectively enhance maintenance efficiency and economic benefits.

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A fast boundary protection for an AC transmission line connected to an LCC-HVDC inverter station

Cited by 8 publications

References 33 publications

A simple decision tree-based disturbance monitoring system for VSC-based HVDC transmission link integrating a DFIG wind farm

A simple decision tree-based disturbance monitoring system for VSC-based HVDC transmission link integrating a DFIG wind farm

Capacitive Filter Based HVDC Converter for Reducing the Vibration and Noise of Converter Transformer

Optimal Operation and Control Design of DC Arrester for Renewable Energy Transmission

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