Seyed-Alireza Ahmadi - IEEE Xplore Author Profile
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Seyed-Alireza Ahmadi

Publications
7
Citations
90
Publications by Year
20212025
Co-Authors:
Show All Co-Authors (7)
Image of author Seyed-Alireza Ahmadi

Seyed-Alireza Ahmadi

Affiliation

School of Electrical and Computer Engineering
College of Engineering
University of Tehran, Tehran, Iran

Publication Topics

Biography

Seyed-Alireza Ahmadi received the M.Sc. degree in electrical engineering from Shahid Beheshti University, Tehran, Iran, in 2017. He is currently working toward the Ph.D. degree in electrical engineering at the University of Tehran, Tehran, Iran.,His research interests include power system protection, control, and transients.(Based on document published on 11 January 2022).
Publications
7
Citations
90
Publications by Year
20212025
Co-Authors:
Show All Co-Authors (7)
Author's Published Works

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Novel Method for Decaying DC Component Removal Based on Solving the Differential Equations

Amir Haji-Mohammadi;Majid Sanaye-Pasand;Seyed-Alireza Ahmadi

IEEE Transactions on Power Delivery
Year: 2025 | Volume: 40, Issue: 2 | Journal Article |
The fault current signal measured by digital relays contains the decaying direct-current (DDC) component and some higher-order harmonics in addition to the fundamental component. One important challenge of phasor estimation algorithms is the removal of the DDC component, as the presence of this component causes errors in the estimation of the fundamental component magnitude, which can result in ma...Show More

Novel Method for Decaying DC Component Removal Based on Solving the Differential Equations

Amir Haji-Mohammadi;Majid Sanaye-Pasand;Seyed-Alireza Ahmadi

Year: 2025 | Volume: 40, Issue: 2 | Journal Article |

Information Fusion Approach for Transformer Protection: Concept, Application, and Field Data Verification

Seyed-Alireza Ahmadi;Majid Sanaye-Pasand;Moein Abedini

IEEE Transactions on Industrial Electronics
Year: 2023 | Volume: 70, Issue: 12 | Journal Article |
Cited by: Papers (3)
The ultimate goal of power transformer protection system is to quickly and reliably detect internal faults while remaining stable for external faults and transients. Since in the conventional protection system, each relay decides about the transformer condition independently, it can be considered that the output signals of relays are logically “OR”ed with each other. In this case, confirming inter...Show More

Information Fusion Approach for Transformer Protection: Concept, Application, and Field Data Verification

Seyed-Alireza Ahmadi;Majid Sanaye-Pasand;Moein Abedini

Year: 2023 | Volume: 70, Issue: 12 | Journal Article |

Online Sensitive Turn-to-Turn Fault Detection in Power Transformers

Seyed-Alireza Ahmadi;Majid Sanaye-Pasand;Moein Abedini;Mohammad Hamed Samimi

IEEE Transactions on Industrial Electronics
Year: 2022 | Volume: 69, Issue: 12 | Journal Article |
Cited by: Papers (15)
Power transformers are of the most critical and expensive equipment in the power system industry. Meanwhile, they are exposed to a variety of faulty and abnormal operating conditions. Therefore, to prevent extension of these events they are protected by different protective schemes. Among the various types of the transformer faults, detecting turn-to-turn faults is the most challenging one for the...Show More

Online Sensitive Turn-to-Turn Fault Detection in Power Transformers

Seyed-Alireza Ahmadi;Majid Sanaye-Pasand;Moein Abedini;Mohammad Hamed Samimi

Year: 2022 | Volume: 69, Issue: 12 | Journal Article |

A Robust Multi-Layer Framework for Online Condition Assessment of Power Transformers

Seyed-Alireza Ahmadi;Majid Sanaye-Pasand

IEEE Transactions on Power Delivery
Year: 2022 | Volume: 37, Issue: 2 | Journal Article |
Cited by: Papers (24)
Online continuous monitoring of dissolved gasses in transformer oil has become an emerging trend in the recent years. This way, in addition to sending the warning signal in the case of gas concentration, a fault diagnosis procedure can be conducted using standard Dissolved Gas Analysis (DGA) methods. However, since the fault diagnosis outcome and result of these methods are sometimes different, an...Show More

A Robust Multi-Layer Framework for Online Condition Assessment of Power Transformers

Seyed-Alireza Ahmadi;Majid Sanaye-Pasand

Year: 2022 | Volume: 37, Issue: 2 | Journal Article |

A Straightforward and Robust Algorithm for Accurate Estimation of Power System Frequency

Moein Abedini;Seyed-Alireza Ahmadi;Majid Sanaye-Pasand

IEEE Transactions on Industrial Electronics
Year: 2021 | Volume: 68, Issue: 12 | Journal Article |
Cited by: Papers (9)
This article presents a novel straightforward and real-time algorithm to measure power system frequency. The main idea of this approach is to improve accuracy of the estimated frequency during off-nominal frequency conditions. The proposed approach includes two stages: 1) the DFT algorithm is used to estimate voltage amplitude and phase angle by assuming that the frequency is the same as its value...Show More

A Straightforward and Robust Algorithm for Accurate Estimation of Power System Frequency

Moein Abedini;Seyed-Alireza Ahmadi;Majid Sanaye-Pasand

Year: 2021 | Volume: 68, Issue: 12 | Journal Article |

An Analytical Fast Decaying DC Mitigation Method for Digital Relaying Applications

Hamid Hajizadeh;Seyed-Alireza Ahmadi;Majid Sanaye-Pasand

IEEE Transactions on Power Delivery
Year: 2021 | Volume: 36, Issue: 6 | Journal Article |
Cited by: Papers (21)
This paper proposes a novel fast and accurate method to mitigate the decaying DC (DDC) component from the fault current signal. At the first stage, it starts to identify the DDC parameters by integrating six sub-cycle samples of current signal considering the symmetry feature of odd harmonics. By receiving the next samples, the estimation of DDC parameters is updated and improved. This procedure c...Show More

An Analytical Fast Decaying DC Mitigation Method for Digital Relaying Applications

Hamid Hajizadeh;Seyed-Alireza Ahmadi;Majid Sanaye-Pasand

Year: 2021 | Volume: 36, Issue: 6 | Journal Article |

Adaptive Single-Phase Auto-Reclosing Approach for Shunt Compensated Transmission Lines

Seyed-Alireza Ahmadi;Majid Sanaye-Pasand;Peyman Jafarian;Hasan Mehrjerdi

IEEE Transactions on Power Delivery
Year: 2021 | Volume: 36, Issue: 3 | Journal Article |
Cited by: Papers (18)
Single-phase auto-reclosing (AR) scheme is widely employed in extra high voltage (EHV) transmission networks to quench transient faults without completely removing the faulted transmission line (TL). Long EHV TLs are commonly equipped with shunt reactors to reduce the Ferranti effect overvoltages. It is common practice to disconnect these reactors under the heavy load periods during the year. Cons...Show More

Adaptive Single-Phase Auto-Reclosing Approach for Shunt Compensated Transmission Lines

Seyed-Alireza Ahmadi;Majid Sanaye-Pasand;Peyman Jafarian;Hasan Mehrjerdi

Year: 2021 | Volume: 36, Issue: 3 | Journal Article |

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