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Journal articles on the topic 'Current differential protection'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Onah, Aniagboso John, and Edwin Ejiofor Ezema. "Transformer Differential Protection." European Journal of Engineering Research and Science 5, no. 8 (2020): 891–98. http://dx.doi.org/10.24018/ejers.2020.5.8.2035.

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Overcurrent and earth fault protective equipment employing time grading and directional detection cannot provide correct discrimination on all power networks and in many cases clearing times for some faults would not be acceptable. Differential protection is an alternative overcurrent protective scheme, which is used to protect individual sections of networks or pieces of equipment, such as transformers, generators, e.t.c. Thus, where protection co-ordination is difficult using time delayed over current and earth fault protection, or where fast fault clearance is critical, then differential pr

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2

Onah, Aniagboso John, and Edwin Ejiofor Ezema. "Transformer Differential Protection." European Journal of Engineering and Technology Research 5, no. 8 (2020): 891–98. http://dx.doi.org/10.24018/ejeng.2020.5.8.2035.

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Overcurrent and earth fault protective equipment employing time grading and directional detection cannot provide correct discrimination on all power networks and in many cases clearing times for some faults would not be acceptable. Differential protection is an alternative overcurrent protective scheme, which is used to protect individual sections of networks or pieces of equipment, such as transformers, generators, e.t.c. Thus, where protection co-ordination is difficult using time delayed over current and earth fault protection, or where fast fault clearance is critical, then differential pr

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3

M., Arshad Shehzad Hassan, Song Guobing, Wang Chenqing, Jin Xingfu, and Tahir Sohaib. "Evaluation of Capacitive Current Compensation Strategies to Current Differential Protection for Long Distance Transmission Lines." International Journal of Engineering Works (ISSN:2409-2770) 2, no. 5 (2015): 66–68. https://doi.org/10.5281/zenodo.18098.

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In UHV and EHV, distributive capacitive current to current differential protection has serious problem. Nowadays, to deal with the problem of distributed capacitive current a stimulating modern technology is being used in current differential protection with high operating threshold. Many schemes have been used into current differential protection for capacitive current compensation, which was based on shunt reactor, phasor compensation algorithm, Bergeron method. Those techniques were also reducing operating speed and sensitivity of current differential protection. To solve the problem of dis

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4

Kaustubh, Sonar, Bobade Chetan, and Chavate Shrikant. "Differential Protection Scheme for Power Transformer Protection." Journal of Emerging Trends in Electrical Engineering 3, no. 3 (2021): 1–5. https://doi.org/10.5281/zenodo.5535782.

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<em>Power transformers are normally protected by differential protection relays.</em> <em>Differential protection is the main protection used for protecting power transformers from internal faults only.</em> <em>External faults have the same effect on the two sets of current transformers used for differential protection.</em> <em>Mal operation of differential protection occurs when an external fault affects only one set of current transformers and causes false tripping. This paper describes how to provide standardized, current based, differential protection for any three-phase power transforme

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5

Kuprienko, Viktor. "Bias signal control in differential protection." MATEC Web of Conferences 212 (2018): 01035. http://dx.doi.org/10.1051/matecconf/201821201035.

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The problem is to ensure the stability of the differential protection functioning at deep saturation of the cores of electromagnetic current transformers. The errors of current transformers support the greatest influence on the operation of differential protections. Features of the differential protection operation at deep saturation of current transformers in short-circuit transient modes are considered. Comparison results of various algorithms for the formation of a bias signal are given. The control capability of the bias signal generation algorithm was analyzed. The harmonic composition of

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Patil, Bhushan Prataprao, and Shah Paresh Jaychand Dr. "A REVIEW ON FAULT CLASSIFICATION METHODOLOGIES IN TRANSFORMER"." International Journal of Research and Analytical Reviews 6, no. 1 (2019): 449–57. https://doi.org/10.5281/zenodo.8434792.

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This paper presents a survey on different fault classification methodologies in transformer, when the transformer becomes operational, it experiences a magnetizing inrush current with a magnitude that can range from six to eight times the rated current. This can cause the differential relay to trigger incorrectly and cutting off the transformer's supply lines without need. To avoid deceptively tripping the differential relay and make sure the transformer is operating properly, it's critical to differentiate between inrush current and internal fault current. The second harmonic restrain

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7

Loman, M. S., and V. S. Kachenya. "DETECTION OF CURRENT CIRCUITS FAULT FOR DIFFERENTIAL CURRENT PROTECTION." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 61, no. 2 (2018): 108–17. http://dx.doi.org/10.21122/1029-7448-2018-61-2-108-117.

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False operation of the differential current protection leads to tripping of the most important electrical power objects. Fault of current transformer’s secondary circuits is one of the most often cause of false operation of the differential current protection. Early determination of this malfunction increases the reliability of the differential current protection and reduces the number of false trips. In the present article the methods of secondary open circuit determining for the differential protection are described. Some of the methods react instantly to the malfunction of secondary current

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8

Dambhare, Sanjay, S. A. Soman, and M. C. Chandorkar. "Adaptive Current Differential Protection Schemes for Transmission-Line Protection." IEEE Transactions on Power Delivery 24, no. 4 (2009): 1832–41. http://dx.doi.org/10.1109/tpwrd.2009.2028801.

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9

Qin, Yu, Minghao Wen, Yu Bai, Yuxi Wang, and Zeya Fang. "A novel current differential protection for MMC-HVDC lines." Journal of Physics: Conference Series 2113, no. 1 (2021): 012053. http://dx.doi.org/10.1088/1742-6596/2113/1/012053.

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Abstract The present current differential protection for MMC-HVDC transmission lines has absolute selectivity and powerful ability to withstand high transition resistance, while it is easily affected by distributed capacitive current and data synchronization error. To solve the problem above, this article proposes a novel current differential protection scheme. The distributed capacitive current can be calculated by integrating the linear voltage distribution in real-time. Thus, the differential value of the midpoint currents of DC line, which are calculated based on the low-pass filtered meas

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10

Pérez-Molina, M. J., P. Eguía, D. M. Larruskain, I. Aranzabal, and E. Torres. "Performance of a protection system for DC grids." Renewable Energy and Power Quality Journal 20 (September 2022): 18–23. http://dx.doi.org/10.24084/repqj20.209.

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The development of High Voltage Direct Current (HVDC) transmission technology is still challenging due to unresolved technical issues, mostly in terms of protecting the system. The overcurrents and voltage drop produced by fault conditions are severely dangerous to the Voltage Source Converters’ (VSC) electronic components. Hence, fast protection systems are needed. This paper proposes a fullselective protection system in conjunction with hybrid HVDC circuit breakers. This protection system employs the rate-ofchange-of-voltage and the differential-current algorithms for primary and backup faul

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11

Solovev, Denis B., and Angelina I. Makeeva. "Analysis of Modeling of Current Differential Protection." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 3 (2015): 423. http://dx.doi.org/10.11591/ijpeds.v6.i3.pp423-428.

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<p class="Abstract"><span lang="EN-US">Analysis of transients in longitudinal differential protection schemes is given basing on results obtained by simulation. Simulation diagram for modeling differential protection with current transformers with non-linear cores is proposed. Main shortcomings of using current transformers as measuring transducers are shown. Solutions of the problem revealed are proposed. </span></p>

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12

Lippert, O. "Digital Communication for Current Differential Protection Schemes." HKIE Transactions 10, no. 2 (2003): 55–59. http://dx.doi.org/10.1080/1023697x.2003.10667910.

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13

de Alencar, Raidson Jenner N., and Ubiratan Holanda Bezerra. "Power Transformer Differential Protection Through Gradient of the Differential Current." Journal of Control, Automation and Electrical Systems 24, no. 1-2 (2013): 162–73. http://dx.doi.org/10.1007/s40313-013-0021-6.

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14

Wang, Hui, Kun Yan, Hou Lei Gao, and Xue Wei Chen. "Simulation and Analysis of Transformer Inrush Current and its Impact on Current Differential Protection." Advanced Materials Research 732-733 (August 2013): 712–16. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.712.

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A transformer model was built using PSCAD. The generation mechanism, waveform characteristics and influence factors of inrush current were simulated and analyzed. Combined with transformer differential protection, this paper discussed the conventional methods to identify inrush current and the operation logic to prevent mal-operation caused by inrush current. The typical transformer differential protection operating criteria were also simulated under different fault conditions. The results show that digital simulation can properly present inrush current waveform characteristics, different kind

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15

Kachenya, V. S., and M. S. Loman. "Formation of Instantaneous Differential and Restraining Cur-rents for Differential Protection of Busbar Assemblies." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 63, no. 5 (2020): 411–22. http://dx.doi.org/10.21122/1029-7448-2020-63-5-411-422.

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The methods of forming differential and restraining currents for busbar differential protection are reviewed; their advantages and disadvantages are considered. It is noted that differential protection according to instantaneous values has a shorter proper response time than for current ones, since it does not use digital filters. The response characteristic and principles of setting selection are studied. The effect of sampling on the operation of differential protection according to instantaneous values is analyzed. It was found that without the use of special measures, depending on the samp

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16

Cherkashyna, Veronika, and Vladyslav Tsyupa. "ANALYSIS OF DIFFERENTIAL RELAY PROTECTION ALGORITHMS AND THEIR MODELLING IN MATLAB." Bulletin of the National Technical University "KhPI". Series: Energy: Reliability and Energy Efficiency, no. 1 (6) (July 9, 2023): 113–18. http://dx.doi.org/10.20998/2224-0349.2023.01.13.

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The paper is devoted to identifying the prospects for software implementation of differential relay protection. The purpose of this study was to analyse the algorithms of the devices' operation, which allowed to create a mathematical model in the MATLAB software environment with the prospect of integration in the form of a single regional relay protection server into the unified energy system of Ukraine. It has been established that virtual models have both advantages and disadvantages compared to digital-analog devices. Their positive feature is that, due to the block principle of constructio

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M., Arshad Shehzad Hassan Guobing Song Xiaoning Kang Zaibin Jiao Chenqing Wang Sohaib Tahir. "Current Differential Protection for Distributed Transmission Lines using Low Sampling Frequency." International Journal of Engineering Works 2, no. 3 (2015): 42–47. https://doi.org/10.5281/zenodo.16431.

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Current differential protection has been affected negatively by the distributed capacitive current of transmission lines. In order to solve the problem of distributed capacitance current of transmission line, the current differential protection in this paper is based on distributed parameters model of the transmission line. The current formula along with the transmission line is derived under this distributed parameter line model. The differential criterion is constructed with the current calculated from both ends to the set point. In order to improve the practicality of the criterion, the imp

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18

Thida, Win, Nandar Maung Hnin, and Min Hein Ye. "Differential Protection of Power Transformer in Substation." International Journal of Trend in Scientific Research and Development 3, no. 5 (2019): 2164–67. https://doi.org/10.5281/zenodo.3591175.

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Protection scheme required for the protection of power system components against abnormal conditions such as faults etc., and that essentially consists of protective relaying and circuit breaker. Protective relay senses the fault and determines the location of fault. Then, protective relay sends the tripping command to the circuit breaker. Therefore, proper care should be taken in designing and selecting an appropriate relay which is reliable, efficient and fast in operation. The voltage transformer and current transformer continuously measure the voltage and current of an electrical system an

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19

Song, Xupeng, Zhisheng Liu, and Yang Yang. "Improved differential protection scheme based on the statistical distribution of differential current sampling points for the main transformer in wind farms." Journal of Physics: Conference Series 2849, no. 1 (2024): 012070. http://dx.doi.org/10.1088/1742-6596/2849/1/012070.

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Abstract During the fault ride-through process in wind farms based on doubly-fed induction generators (DFIGs), there is a frequency deviation phenomenon in the short-circuit current provided by the wind farm, which can cause errors in phasor extraction based on the Fourier algorithm, and the second harmonic restraint criterion may operate incorrectly. As a result, the differential protection remains locked for an extended period, leading to a decrease in the performance of the traditional differential protection. To address this issue, an improved differential protection scheme based on the ti

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20

Ni, Pinghao, Hao Cao, Jinghan He, Meng Li, Fengxi Gao, and Ziqi Wang. "Phase-angle adaptive current differential protection for active distribution network." Journal of Physics: Conference Series 2564, no. 1 (2023): 012022. http://dx.doi.org/10.1088/1742-6596/2564/1/012022.

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Abstract With the distributed generator to be attached to the distribution network, the current differential protection scheme may have some problems, resulting in maloperation or rejection of protection. This paper investigates the current distribution properties of an active distribution network with branches of undetected load and draws the conclusion that undetected load may cause differential protection maloperation. The differences in fault properties of differential protection in transmission network scenarios and distribution networks containing distributed generator are evaluated, lea

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21

Gao, Shu-ping, Qi Liu, and Guo-bing Song. "Current differential protection principle of HVDC transmission system." IET Generation, Transmission & Distribution 11, no. 5 (2017): 1286–92. http://dx.doi.org/10.1049/iet-gtd.2016.1380.

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22

Kang, Y. C., E. S. Jin, S. H. Kang, and P. A. Crossley. "Compensated-current differential relay for protection of transformers." IEE Proceedings - Generation, Transmission and Distribution 151, no. 3 (2004): 281. http://dx.doi.org/10.1049/ip-gtd:20040476.

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23

Tang, Cui, Xianggen Yin, Xuanwei Qi, Zhe Zhang, and Minghao Wen. "The Effects of the Reverse Current Caused by the Series Compensation on the Current Differential Protection." Scientific World Journal 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/473913.

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The series capacitor compensation is one of the key technologies in the EHV and UHV long distance power transmission lines. This paper analyzes the operation characteristics of the main protection combined with the engineering practice when the transmission line overcompensation due to the series compensation system is modified and analyzes the influence of the transition resistance and the system operation mode on the current differential protection. According to the simulation results, it presents countermeasure on improving the sensitivity of differential current protection.

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Tuan, Doan Kim. "Overcurrent and Differential Protections for Power Substations Using Three-Winding Transformer." International Journal of Research and Review 9, no. 1 (2022): 728–37. http://dx.doi.org/10.52403/ijrr.20220184.

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This paper presents a method to determine parameters of overcurrent and differential protections for power substations using three-winding power transformers. Active current threshold and time and working area are shown in this paper to help to calculate and set above relaying protections. An experimental model depicted a relaying system for a power substation using two three-winding power transformers is built to serve education training. It has a complete system structure of relaying protection, including a Arduino Mega 2560 processor, measuring system emulated by variable resistors, real ti

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25

王, 雨潼. "Cable Fault Differential Current Protection Method Based on Dual Current Transformer." Smart Grid 10, no. 02 (2020): 29–37. http://dx.doi.org/10.12677/sg.2020.102004.

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26

Gangadharan, P. K., T. S. Sidhu, and A. Klimek. "Influence of current transformer saturation on line current differential protection algorithms." IET Generation, Transmission & Distribution 1, no. 2 (2007): 270. http://dx.doi.org/10.1049/iet-gtd:20060138.

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Anndkkage, U. D., Ming Yu, P. G. Mclaren, E. Dirks, and A. D. Parker. "Simulation of a differential current protection scheme involving multiple current transformers." IEEE Transactions on Power Delivery 15, no. 2 (2000): 515–19. http://dx.doi.org/10.1109/61.852977.

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Cai, Wei, Lin Sun, and Hua Ren Wu. "Simulation of Transformer Protection Based on an Embedded MATLAB Function." Advanced Materials Research 960-961 (June 2014): 995–99. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.995.

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This paper establishes a simulation model of a simplified power system with transformer differential protection based on an embedded Matlab function block. The differential protection consists of percentage restraint differential protection, second harmonic restraint, differential current instantaneous trip protection and over-excitation protection. The model is able to correctly simulate the transformer’s inrush current and internal and external faults. The results from the simulation show that the circuit breaker correctly operates for a transformer internal fault and provides a good braking

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Solak, Krzysztof, Waldemar Rebizant, and Frank Mieske. "Integral Approach-Based Sensitive Protection of Autotransformers for Turn-to-Turn Faults." Energies 18, no. 13 (2025): 3273. https://doi.org/10.3390/en18133273.

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Current differential protection, using either phase currents or negative-sequence components, is commonly applied for the sensitive protection of power transformers. However, this method proves insufficient for autotransformers, particularly when their tertiary winding is fully loaded, as demonstrated in this paper. To address this limitation, the authors’ previously proposed negative-sequence integral approach for power transformers has been adapted and evaluated for three-winding autotransformers. The results show that this integral protection offers significantly higher sensitivity than cur

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Liang, Yingyu, Wulin Li, and Guanjun Xu. "Performance Problem of Current Differential Protection of Lines Emanating from Photovoltaic Power Plants." Sustainability 12, no. 4 (2020): 1436. http://dx.doi.org/10.3390/su12041436.

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The amplitude and phase angle of the fault current in photovoltaic power plants (PVPPs) are significantly influenced by the control system of the grid-connected inverters, unlike in a conventional synchronous source. Hence, PVPPs may adversely affect the performance of the current differential protection designed for synchronous sources-based power grids. In order to study the performance problem of current differential protection on AC transmission lines, an analytical expression of the fault current in the PVPPs was deduced, and the fault current characteristic was extensively analyzed. Base

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Zhou, Jinyu, Shuping Gao, and Zhanshe Yang. "Pilot protection based on current sequence component differences for offshore wind power low-frequency transmission line." Journal of Physics: Conference Series 3011, no. 1 (2025): 012027. https://doi.org/10.1088/1742-6596/3011/1/012027.

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Abstract The various control strategies used by the inverters in the offshore wind power low-frequency transmission system will result in variations in the current composition at the two ends. These variations will raise the phase angle difference of the same-phase fault currents, decreasing the protection system’s sensitivity and possibly causing it to fail. To solve this problem, the study proposes to construct a new protection criterion using zero-sequence currents and negative-sequence currents, which can more accurately identify and differentiate between normal operation states and fault

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32

Yang, Xuemei, Hanjiang Li, Yingqian Ni, Bowen Deng, and Tingting Ren. "Adaptability Analysis of Differential Protection for Output Transformers in Wind Power Plants." Journal of Physics: Conference Series 2785, no. 1 (2024): 012090. http://dx.doi.org/10.1088/1742-6596/2785/1/012090.

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Abstract After large-scale integration of wind farms into the power grid, according to the requirements of the State Grid’s wind power grid connection operation guidelines, wind farms should have low-voltage ride-through capability. The short-circuit current of wind farms will have a significant impact on the identification of excitation inrush currents in the transformers sent out by the wind farms, and the saturation of current transformers will also have an impact on differential protection. Analysis shows that after the wind power is connected, the harmonic components contained in the faul

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Zhang, Zhi, Yang Sun, and Zhiyan Li. "Adaptive Restraint Coefficient-Based Differential Protection for Main Transformers in Wind Farms." Journal of Physics: Conference Series 2320, no. 1 (2022): 012015. http://dx.doi.org/10.1088/1742-6596/2320/1/012015.

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Abstract Influenced by factors such as fault current frequency deviation, current transformer (CT) saturation and abnormal data, the traditional transformer current differential protection scheme contains the risks of slow operating speed or false operation in the wind power system. To guarantee the safe operation of the power system, by improving the traditional current differential protection scheme, a differential protection scheme based on the adaptive restrain coefficient was proposed for the main transformers of wind farms. The proposed protection adaptively adjusts the restraint coeffic

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Wang, Yan Hong. "The Influence of Exciting Inrush Current of Transformer Differential Protection." Applied Mechanics and Materials 397-400 (September 2013): 1935–38. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.1935.

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The differential protection for transformer is main protection , the unbalance current is the main factor affecting the behavior of the protection. The unbalance current caused many reasons, generally can be divided into steady state and transient state, the transient unbalance current is mainly under the circumstance of exciting inrush current, Containing a lot of harmonic component and harmonic component, based on this the paper studied the harmonic component in the application of power transformer differential protection, and through the simulation analysis.

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Yusifov Samad İmamali, Cafarzadeh Turana Akbar, Yusifov Samad İmamali, Cafarzadeh Turana Akbar. "DEVELOPMENT OF MICROCONTROLLER PROTECTION SYSTEM OF POWER TRANSFORMERS." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 52, no. 04-02 (2025): 22–28. https://doi.org/10.36962/pahtei5204-022025-22.

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The protection of power transformers is a highly intricate issue in the transmission network of the power system. As minimizing the frequency and duration of unwanted interruptions is crucial, there is a significant demand on the protective relays of power transformers. Different protection principles have been suggested and implemented to safeguard transformers from various fault types. Relays that operate based on overcurrent, overcurrent, and overheat principles protect transformers from overloads and external conditions. Differential relays provide protection against internal transformer f

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Ilkin Marufov, Kubra Mukhtarova, Ilkin Marufov, Kubra Mukhtarova. "METHODS OF INCREASING THE PROTECTION RELIABILITY OF THE STATOR CIRCUIT IN GENERATORS." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 45, no. 10 (2024): 267–73. https://doi.org/10.36962/pahtei45102024-28.

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Measures to increase protection reliability of generators are analyzed in the article. Based on the research, it was determined that damage to generators can be caused by various reasons. These include the effects of current flowing from an external source as well as currents generated within the generators. First of all, it should be noted that in order to limit these currents, the neutral point of the generators must be earthed. Also, referring to various literatures, phase differential, ground differential, overcurrent and half-harmonic input protection methods were analyzed in order to inc

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Bulacio, M. F., T. A. González, G. Marinelli, R. Alonso, and H. E. Tacca. "Power-Integrated Circuit Active Leakage Current Detector." Advances in Power Electronics 2012 (May 29, 2012): 1–8. http://dx.doi.org/10.1155/2012/270680.

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Most of the failures of induction motors become insulation faults, causing a permanent damage. Using differential current transformers, a system capable of insulation fault detection was developed, based on the differential relay protection scheme. Both signal injection and fault detection circuitry were integrated in a single chip. The proposed scheme is faster than other existing protection and not restricted to protect induction motors, but several other devices (such as IGBTs) and systems. This paper explains the principle of operation of fault protection scheme and analyzes an integrated

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Glazyrin, V.E., and I.I. Litvinov. "Distinctive Features of Faults for Use in Power Transformer Differential Protection." Problemele Energeticii Regionale 1(33) (April 15, 2017): 24–31. https://doi.org/10.5281/zenodo.1193570.

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The aim of the work is to study the change in instantaneous values of the differential current in power transformer differential protection circuits under conditions of magnetizing inrush when the unloaded transformer is energized and under conditions of a fault within the protection zone. Saturation of measuring current transformers during the transient process leads to distortion of signals in their secondary windings, which can cause a long delay in the disconnection of the protected object and the development of an accident in the power system if traditional protective algorithms are used.

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Alsakati, Ahmad Adel, Venkatesh Krishna Raja, Chockalingam Aravind Vaithilingam, Kameswara Satya Prakash, and Reynato Andal Gamboa. "Modelling and Experimental Investigation on the Differential Protection of Transmission Line." Journal of Physics: Conference Series 2523, no. 1 (2023): 012025. http://dx.doi.org/10.1088/1742-6596/2523/1/012025.

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Abstract Due to the significant impact of the fault on power systems and the failure of protection devices, power system operators and researchers have given reliability a great deal of consideration. The modern IEC 61850 standard is used recently to improve communication systems in digital substations and allow signals to be shared between the devices. Differential protection is used to protect the transmission lines, cables, and transformers, as it detects the faults by comparison of the currents flowing into and out of the protected devices. In this research, MATLAB/Simulink has been utiliz

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40

Wei, Wei, Li He, Wei Zhen, and Xiao Bin Liang. "Analysis on Line Differential Protection Based on Transient Saturation Characteristics of TPY-Type Current Transformer." Advanced Materials Research 1070-1072 (December 2014): 671–77. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.671.

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Transient saturation characteristics of TPY-type current transformer have great impact on the right action of line differential protection. This paper proposes an analytical method of line differential protection under current transformer saturation by utilizing current transformer model and test methods. The true current value of primary side can be obtained by our proposed method and therefore it yields correct assessment of line operating status. This method has high reliability applying to practical engineering examples of differential protection.

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Ge, Li Juan, Yong Zhang, and Haijun Li. "Analysis on 2nd Main Transformer Trip Accident of a Certain Substation of the West Inner Mongolia Power Grid." Advanced Materials Research 516-517 (May 2012): 1312–15. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.1312.

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This paper mainly analyzes the causes of a 10KV line and 2nd transformer circuit breaker tripping, also analyzes the action mechanism of the relay protection. Because of the permanent phase fault at the head of the line, instantaneous over-current protection(SegmentⅠ) as its main protection of the phase fault made the 921 breaker triping, the action was selective.And the permanence of this fault led to the failure of the reclosing; Reversed the TA(current transformer) for measuring with the TA for differential protection in high voltage side of the transformer, this fault can also make the TA

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Gao, Yang, and Guo Yan Liang. "The Analysis and Discussion of the Actual Case about the Differential Protection Malfunction Caused by the Transient Exciting Current of Large-Scale High-Voltage Main Transformer at the Time of Switching." Advanced Materials Research 694-697 (May 2013): 785–89. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.785.

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In this paper, based on the choice of voltage level 500kV for large transformer differential protection of maloperation accident actually as an example, discusses how to improve the reliability and the transformer differential protection with the relationship between pressure test. Analysis found that in order to avoid the excitation transient exciting current transformer differential protection sparked the misoperation, on-site technical personnel in the differential protection setting calculation process, make use of data in conformity with the relevant parameters, rules and standards, famil

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43

Navolochny, Alexander, Olga Onisova, and Alexander Salmin. "Research on Impact of Solar Power Plants on 110 kV Line Current Differential Protection Operation." E3S Web of Conferences 584 (2024): 01029. http://dx.doi.org/10.1051/e3sconf/202458401029.

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The paper presents the research on the impact of renewable energy sources based power plants interfaced to power grids through inverters on differential protection of a line connecting such a power plant to an external grid. The paper considers the case of a weak power grid with a relatively high-capacity solar power plant. An approach to evaluate the IBR impact on differential protection in steady-state conditions under typical inverter control scenarios is suggested. The factors affecting the differential protection operation are revealed. The brief guidance concerning the application of dif

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Sheng, Su, K. K. Li, W. L. Chan, Xiangjun Zeng, Dongyuan Shi, and Xianzhong Duan. "Adaptive Agent-Based Wide-Area Current Differential Protection System." IEEE Transactions on Industry Applications 46, no. 5 (2010): 2111–17. http://dx.doi.org/10.1109/tia.2010.2059452.

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Chi-Kong Wong, Chi-Wai Lam, Kuok-Cheong Lei, Chu-San Lei, and Ying-Duo Han. "Novel wavelet approach to current differential pilot relay protection." IEEE Transactions on Power Delivery 18, no. 1 (2003): 20–25. http://dx.doi.org/10.1109/tpwrd.2002.803733.

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Wong, C. K., C. W. Lam, K. C. Lei, C. S. Lei, and Y. D. Han. "Novel Wavelet Approach to Current Differential Pilot Relay Protection." IEEE Power Engineering Review 22, no. 8 (2002): 68. http://dx.doi.org/10.1109/mper.2002.4312510.

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Gao, Houlei, Jiali He, and Shifang Jiang. "GPS synchronized digital current differential protection for transmission lines." Electric Power Systems Research 62, no. 1 (2002): 29–36. http://dx.doi.org/10.1016/s0378-7796(02)00029-9.

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Ali, E., A. Helal, H. Desouki, K. Shebl, S. Abdelkader, and O. P. Malik. "Power transformer differential protection using current and voltage ratios." Electric Power Systems Research 154 (January 2018): 140–50. http://dx.doi.org/10.1016/j.epsr.2017.08.026.

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49

Eissa, M. M., and O. P. Malik. "A new digital directional transverse differential current protection technique." IEEE Transactions on Power Delivery 11, no. 3 (1996): 1285–91. http://dx.doi.org/10.1109/61.517482.

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Rao, J. Ganeswara, and Ashok Kumar Pradhan. "Improved Transverse Current Differential Protection Resistant to Power Swing." INAE Letters 1, no. 2 (2016): 53–58. http://dx.doi.org/10.1007/s41403-016-0011-7.

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