A Faulty Pole Detection Method for the VSC-HVDC System Based on the Aperiodic Component Energy

Lei, Shunguang; Shu, Hongchun; Li, Zhimin; Dai, Yue; Xiao, Tian; Wang, Guangxue; Wang, Xuan

doi:10.1016/j.epsr.2022.108650

Cited by 7 publications

(6 citation statements)

References 28 publications

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“…When comparing the trip times of the proposed algorithm for the LCC-HVdc line with the one proposed in [22], it is also clear that both have the same magnitude. However, the algorithm proposed in [22] is only applicable to VSC-HVdc.…”

Section: Trip Time Resultsmentioning

confidence: 79%

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Dynamic Time Warping Based Pilot Protection Algorithm for AC and HVDC Transmission Lines

Manassero

Tiferes

2023

IEEE Access

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This paper presents a pilot protection algorithm for alternating (ac) and direct current (dc) transmission lines, the last in the line commutated converter and voltage source converter topologies. The main contribution of this research lies, in this context, in the development of a protection method for lines of different natures. This method relies on the dynamic time warping (DTW) technique. The solution is attractive as it does not require any line or system parameters and works only with current samples. For ac lines, the algorithm uses DTW to evaluate the line terminals phase currents' and the zero-sequence components' similarities and detect faults. In turn, for dc lines, the method employs DTW technique to evaluate the similarities of cross-currents between poles and terminals and identify internal dc faults. The authors tested the algorithm for each line topology through several fault simulations, also considering the challenging conditions of high impedance internal faults, sampled noises, misalignment between samples, current transformer saturation, power swing, and internal fault with outfeed. This solution was also tested against field-recorded data in existing lines, and the resulting trip times were compared with the ones of the actual protection devices. All results indicate that this solution yields a rapid, effective, secure, and dependable protection.INDEX TERMS Power transmission lines, line commutated converter, voltage source converter, pilot protection, dynamic time warping.

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Section: Trip Time Resultsmentioning

confidence: 79%

“…Notably, these solutions need the line's parameters with considerable preciseness. In [22], the developed algorithm uses protection principle based on the aperiodic component energy.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Time Warping Based Pilot Protection Algorithm for AC and HVDC Transmission Lines

Manassero

Tiferes

2023

IEEE Access

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“…As elaborated in [14,31], unless the low-frequency components of measured signals are used, this solution cannot be practical and accurate enough for long transmission lines. According to [32], the lumped parameter of the equivalent T-model in Figure 3 can be calculated as (4).…”

Section: Discussion On the Impact Of Discharging Capacitive Current A...mentioning

confidence: 99%

“…This requires timely detection of DC line faults. At present, single-end protection schemes, which mostly consist of traveling waves and voltage derivatives methods, are used as the main protection because of their high operating speed in HVDC systems [4]. The traveling waves and voltage derivatives protection schemes that use locally acquired data to detect faults are susceptible to fault resistance and noise and require high sampling rates [5].…”

Section: Introductionmentioning

confidence: 99%

Pilot protection method for bipolar CSC‐HVDC transmission lines based on transient currents behaviour

Khaleghi-Abbasabadi

Mehrabi‐Kooshki

Mirhosseini

et al. 2022

IET Generation Trans & Dist

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The unnecessary prolonged operating time of conventional current differential protection under high-impedance DC line faults is an important issue affecting the continuity of power supply. This issue originates from the extreme differential current fluctuation under fault conditions. This paper presents a reinforced pilot protection algorithm for bipolar CSC-HVDC transmission lines to achieve a selective and sensitive performance without sacrificing the protection speed. In this regard, the characteristics of low-frequency transient modal currents are investigated along with the impact of discharging capacitive current under various fault conditions. Based on the features arising from line-mode compensated currents, it is shown that their opposite changing directions induces a positive high-value differential current during DC line faults, whereas the compensated line-mode currents follow the same changing trend under external faults. After detecting internal faults, the faulted pole is detected by utilizing the polarity of ground-mode components. Compared to other pilot protections, the proposed protection provides more reliability, selectivity, and sensitivity with high operating speed. Moreover, it has robust performance against discharging capacitive current, asynchronous measurement, line parameters uncertainty, and noise. Various simulation tests are performed on a ±500 kV HVDC test system in PSCAD to verify effectiveness of the proposed protection.

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“…As higher and higher powers are being transmitted on HVDC systems, their protection is becoming increasingly critical. The failure rate of the HVDC transmission line is much higher than any other component of the HVDC transmission system [9]. Also, most of the DC transmission line faults are transient in nature.…”

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 Faulty Pole Detection Method for the VSC-HVDC System Based on the Aperiodic Component Energy

Cited by 7 publications

References 28 publications

Dynamic Time Warping Based Pilot Protection Algorithm for AC and HVDC Transmission Lines

Dynamic Time Warping Based Pilot Protection Algorithm for AC and HVDC Transmission Lines

Pilot protection method for bipolar CSC‐HVDC transmission lines based on transient currents behaviour

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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