A High-Speed Protection Strategy for Bipolar CSC-Based HVDC Transmission System

Ankar, Som; Yadav, Anamika

doi:10.1080/15325008.2021.1937397

Cited by 6 publications

(6 citation statements)

References 29 publications

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“…Bipolar CSC-based high voltage DC transmission line high-speed fault protection was examined using the bagged tree ensemble classifier scheme in conjunction with the wavelet transform. [24]. Proposed a method by authors to locate DC arc faults in VSC-HVDC transmission lines.…”

Section: Literature Reviewmentioning

confidence: 99%

Time-Frequency Transformation Technique with Various Mother Wavelets for DC Fault Analysis in HVDC Transmission Systems

Chandio,

Memon

2023

SSURJET

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HVDC transmission has become a cost-effective option for transferring high voltage over greater distances. Protecting an HVDC transmission line is more challenging than protecting an AC transmission line due to its low impedance and absence of zero crossing DC current. Power electronic devices have finite overload capability, and standard relays are ineffective for HVDC line protection. Heavy current is generated by DC faults in HVDC (T/L), hence it is necessary to treat DC line faults in short, medium, and long HVDC (T/L) systems with different fault resistance. It is crucial to research fault detection methods based on time-frequency analysis by choosing appropriate algorithms using various (MW) methodologies for short, medium, and long HVDC transmissions at various fault resistances in order to protect the HVDC system. In this work, we examine how the length of an HVDC transmission line and fault resistance at both sides (inverter and rectifier) affects the selection of suitable mother wavelets for DC fault, using mean parameter and time-frequency transformation. SimPower System of Matlab is used to evaluate the impact of HVDC transmission line length and fault resistance on the selection of suitable mother wavelets. Simulation results show that Coif3 is an ideal wavelet for fault detection in medium transmission lines at different fault resistances. On the other hand, Rbio3.1 is more suitable for fault detection in long transmission lines at various fault resistances. For short and medium HVDC transmission lines, different mother wavelets were found to be suitable at different fault resistances. Therefore, it is essential to carefully consider the specific characteristics of the transmission line and the fault scenario when selecting a mother wavelet for accurate fault location.

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Section: Literature Reviewmentioning

confidence: 99%

Time-Frequency Transformation Technique with Various Mother Wavelets for DC Fault Analysis in HVDC Transmission Systems

Chandio,

Memon

2023

SSURJET

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“…The schemes of [7–12, 23–28, 30–33] use both voltage and current signals, therefore they require more measurement equipment and cost. The proposed protection scheme uses only single‐end voltage data.…”

Section: Comparison With Other Schemesmentioning

confidence: 99%

“…Compared to [6,7,9,10,12,13,18,21,22,[24][25][26][30][31][32][33], the proposed protection scheme is capable of detecting higher fault resistance. Only the protection schemes in [27,28] are capable of detecting fault resistance up to 1000 Ω, but these use two-end line data and both voltage and current signals.…”

Section: Maximum Detectable Fault Resistancementioning

confidence: 99%

“…Protection schemes based on the SVM and K-MEANS machine learning algorithms are presented in [23,24], respectively. In [25], bagged-tree ensemble-classifier (BTEC) method is employed to detect the presence of a fault and categorizes the various types of faults in the DC transmission line. These protection methods need to simulate and generate a lot of data to train the algorithms.…”

Section: Introductionmentioning

confidence: 99%

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Non‐unit protection scheme for HVDC transmission lines based on energy of voltage difference

Mehrabi‐Kooshki

Mirhosseini

Jamali

2022

IET Generation Trans & Dist

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This paper presents a non‐unit protection scheme for LCC‐HVDC transmission lines based on the energy of voltage difference. The change in the line average voltage is used to detect the fault, whilst faulted pole selection criterion is calculated by using the ratio of the average voltage change at positive and negative poles. The protection criterion calculated as the energy of second‐order difference of the DC line voltage determines whether the fault is internal or external. Numerous simulation and field data test are performed to validate effectiveness of the proposed scheme under a vast variety of fault conditions. The tests include different types of internal and external faults, sensitivity to transferred power variation, sampling frequency, length of data window, change of smoothing reactor, effect of lightning interference, change of the line length, change of the operation mode, and effect of noise. The scheme is a single‐end protection method and does not require sophisticated computations.

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“…Reference [30] uses a bagged-tree ensemble-classifier (BTEC) protection technique for fault detection and classification in the DC transmission line. A massive set of data in the form of voltage and current signals is required from the simulation for training the protection algorithm.…”

Section: Introductionmentioning

confidence: 99%

Improved Relay Algorithm for Detection and Classification of Transmission Line Faults in Monopolar HVDC Transmission System Using Signum Function of Transient Energy

Deb,

Lata,

Bhadoria

et al. 2024

IEEE Access

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Based on the signum function (sign of magnitudes) of transient energy, this paper proposes a fault classification approach and algorithm for a monopolar HVDC system. The analytical study here shows that the signum function of variation in transient energy has a zero value individually at both ends on no-fault conditions. Moreover, the summation of the signum functions computed for internal DC faults is zero, whereas the same has a non-zero value for external AC faults. The performance of the proposed algorithm has been extensively evaluated by simulating faults on a CIGRE benchmark system for HVDC monopolar configuration using EMTDC/PSCAD software. Three locations of DC line fault, and AC fault at the two ends of the system have been considered for this evaluation. Five fault resistance values (0, 10, 100, 1000, and 2000 ohms) have been simulated for each fault location. The results conform with the theoretical analysis, and the fault classification by the algorithm is 100% accurate. The time taken to detect and classify a DC fault at the mid-point of the 800-km line is 1.5 ms, and that for line-end faults on the DC line is 3 ms for all values of fault resistance. These results show a marked improvement over those reported earlier in the literature using other techniques. A comparison table is given in the last section to corroborate it.

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A High-Speed Protection Strategy for Bipolar CSC-Based HVDC Transmission System

Cited by 6 publications

References 29 publications

Time-Frequency Transformation Technique with Various Mother Wavelets for DC Fault Analysis in HVDC Transmission Systems

Time-Frequency Transformation Technique with Various Mother Wavelets for DC Fault Analysis in HVDC Transmission Systems

Non‐unit protection scheme for HVDC transmission lines based on energy of voltage difference

Improved Relay Algorithm for Detection and Classification of Transmission Line Faults in Monopolar HVDC Transmission System Using Signum Function of Transient Energy

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