Single‐end protection algorithm for HVDC transmission lines based on the current difference

Mehrabi‐Kooshki, Mohammad; Mirhosseini, Seyed Sattar; Jamali, S.

doi:10.1049/iet-gtd.2019.1621

Cited by 15 publications

(10 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to (6), the maximum value of 𝛾 1 l and 𝛾 0 l are low enough that tanh(𝛾l ∕2) and sinh(𝛾l ) can be approximated to 𝛾l ∕2 and 𝛾l , respectively. This means if sufficient lowfrequency components of voltage and current signals are chosen for the long transmission line, the wavelength 𝜆 will be much longer than the length of the transmission line l [14].…”

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

confidence: 99%

“…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]. Several single-end protection schemes are proposed in [6][7][8][9][10] to resolve the problems of single-end protection schemes. Although these methods introduce new techniques to improve the selectivity and reliability of single-end protection methods, they still perform poorly against at least one of noise, lightning interference, and high-impedance faults.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

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

confidence: 99%

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…Proposed protection scheme have higher sampling frequency than [7, 8, 12, 14–17, 19–24, 29, 30, 32], have identical sampling frequency with [18, 27, 28, 31, 33], and has a lower sampling frequency than [6, 9–11, 13, 26].…”

Section: Comparison With Other Schemesmentioning

confidence: 99%

“…The sensitivity of [15] decreases with increasing fault resistance. In [16], a single-end protection algorithm based on current difference is presented. The reliability of this algorithm is affected by high resistance faults.…”

Section: Introductionmentioning

confidence: 99%

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

Mehrabi‐Kooshki

Mirhosseini

Jamali

2022

IET Generation Trans & Dist

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…It was also used to analyse fault events [48][49][50][51][52][53], fault signals [54][55][56], and fault location [57]. e power flow of this system was analysed using dynamic simulation to validate the stability and reliability of the operation of the HVDC transmission line [58][59][60][61][62][63].…”

Section: Introductionmentioning

confidence: 99%

Effects of Conditional Changes on High-Voltage Direct Current Transmission Line Characteristic

Pothisarn

Ngaopitakkul

Leelajindakrairerk

et al. 2022

Journal of Electrical and Computer Engineering

View full text Add to dashboard Cite

The high-voltage direct current (HVDC) transmission system, which links the Gurun Substation of the National Electric Authority of Malaysia (Tenaga Nasional Berhad, TNB) with the Khlong Ngae Station of the Electricity Generating Authority of Thailand (EGAT), has been extensively researched to achieve the highest quality because it is the largest of its kind in Thailand, and there is a plant to expand its transmission power. However, the impact on the whole system is under-researched. To study and develop this system, the HVDC transmission line is modelled with the MATLAB/Simulink program and a laboratory setup to investigate the effect of transmission line distance, load power, and voltage on power loss, voltage drop, and waveform. The HVDC transmission line parameters are calculated from the actual transmission line parameters and converted to the simulation model parameters using the per-unit method. The model is verified and tested by the simulation program before creating the experimental setup. The simulation and experimental results demonstrate the effects of changing system conditions via the three aspects. All the three conditions directly affect the HVDC transmission line; nevertheless, they affect each aspect differently.

show abstract

Single‐end protection algorithm for HVDC transmission lines based on the current difference

Cited by 15 publications

References 37 publications

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

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

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

Effects of Conditional Changes on High-Voltage Direct Current Transmission Line Characteristic

Contact Info

Product

Resources

About