Results 31 to 40 of about 127 (124)

Application of T&D Circuit Segmentation for Improved Resilience—A Texas Case Study

The Journal of Engineering, Volume 2026, Issue 1, January/December 2026.
ABSTRACT Several lessons were learned from the post‐analysis of 2021 Winter Storm Uri's devastating impact on Texas's electricity grids. Among the lessons was the need for greater granularity and flexibility in how Texas electricity utilities shed load during emergencies, as directed by the local Independent System Operator (ISO), while protecting ...
Sarat Chandra Vegunta, Nelson Bacalao, Giovani Sasso Scarpati, Ram Nath   +3 more
wiley   +1 more source

Research Status of Substation Vulnerability Under the Coupling Effect of Earthquake and Strong Wind

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
With the progressive advancement of China’s power industry toward higher voltage levels and larger capacity, substations have become critical infrastructures whose resilience to natural disasters requires urgent enhancement. In particular, under the coupled effects of multiple hazards such as earthquakes and strong winds, the optimization of substation
Yihua Gao, Hong Liu, Yijie Wang, Bo Wen, Jiajun Fu, Yi Shan   +5 more
wiley   +1 more source

Partial discharge and interference discrimination in gas-insulated systems using electric and magnetic sensors

International Journal of Electrical Power & Energy Systems
The correct identification of partial discharges (PDs) is instrumental for the maintenance plan in gas-insulated systems (GIS). However, onsite PD measurements are difficult, especially in HVDC systems, where partial discharges can be confused with ...
Christian Mier, Armando Rodrigo Mor, Tianming Luo, Peter Vaessen   +3 more
doaj   +1 more source

A Visualization Verification Method for Startup Risk of Substation Equipment Based on Multidimensional Graph Models

Engineering Reports, Volume 7, Issue 11, November 2025.
Based on a multi‐dimensional diagram model, a technique for visual verification of the risk of starting substation equipment is studied. This method can effectively and precisely verify the possible risks during the substation equipment startup and enhance the power system's operational safety.
Lifan Mao, Huang Chen, Yongqi He, Chuanpu Zhu, Chao Chen   +4 more
wiley   +1 more source

Influence of Nanoparticles on Dielectric Properties of High‐Voltage Epoxy‐Based Nanocomposite Insulators: Simulation and Experimental Analysis

Energy Science &Engineering, Volume 13, Issue 11, Page 5605-5626, November 2025.
ABSTRACT There is a need to develop an improved insulating material that surpasses traditional insulators in terms of insulation and efficient operation under extreme weather conditions. Epoxy nanocomposites (NCs) have gained considerable attention due to their intrinsic material properties.
Abubakar Siddique, Muhammad Masood Khan, Waseem Aslam, Muhammad Usama Shahid, Khaled Saleem S. Alatawi, Mohammad R. Altimania, Ievgen Zaitsev, Hafiz Mudassir Munir   +7 more
wiley   +1 more source

Trends in Measuring Instrument Transformers for Gas-Insulated Switchgears: A Review

Energies
Voltage and current measurements in high-voltage substations are fundamental for stable operation. Conventional instrument transformers (ITs) face challenges in gas-insulated switchgears (GISs), such as size, weight, accuracy limitations, and behavioral ...
Dong-Eon Kim, Gyeong-Yeol Lee, Gyung-Suk Kil, Sung-Wook Kim   +3 more
doaj   +1 more source

Mechanical vibration state and its defect severity development trend prediction for gas‐insulated switchgear equipment: Attention‐bidirectional gated recurrent unit model construction and experimental verification

High Voltage, Volume 10, Issue 4, Page 831-844, August 2025.
Abstract Mechanical vibration defect is the key factor leading to sudden failure of gas‐insulated switchgear (GIS) equipment. It is important to realise effective prediction of the mechanical vibration state development trend of GIS equipment in order to improve its active safety protection level.
Xu Li, Jian Hao, Ruijin Liao, Yao Zhong, Ying Feng, Ruilei Gong   +5 more
wiley   +1 more source

A novel GIS breakdown location method based on natural frequency of transient voltage

High Voltage, Volume 10, Issue 4, Page 856-875, August 2025.
Abstract During on‐site withstand voltage tests of gas‐insulated switchgears (GIS), once a breakdown occurs, it is hard to locate the breakdown position due to the intricate branch structures and minimal breakdown energy. The existing methods may require the placement of a large number of sensors with unsatisfactory accuracy, which adversely affects ...
Qiang Sun, Dengwei Ding, Yanpeng Ge, Ziwei Zhang, Wensheng Gao, Weidong Liu, Ke Zhao, Bo Liu, Lei Wang, Jiaqi Qu   +9 more
wiley   +1 more source

Simulation Study on the Calibration of UHF Sensor for GIS Partial Discharge Detection Based on Noise Interference

IEEE Access
The Ultra-High Frequency (UHF) method is widely used for live detection of partial discharge in GIS (Gas Insulated Switchgear). To ensure the accuracy of the detection results, it is necessary to regularly calibrate the performance of UHF sensors ...
Tian Tian, Xiu Zhou, Yukun Ma, Jin Bai, Bo Niu, Zixi Zhu, Chang Xu, Chunxu Fang   +7 more
doaj   +1 more source

A review of advanced acoustic‐chemical‐optical partial discharge monitoring techniques for ultra‐high‐voltage gas‐insulated equipment

High Voltage, Volume 10, Issue 4, Page 787-806, August 2025.
Abstract Partial discharge (PD) detection is considered one of the most crucial and effective methods for identifying defects in electrical equipment. Consequently, investigating advanced and efficient PD monitoring techniques is essential for the development of gas‐insulated equipment (GIE) and the construction of ultra‐high‐voltage (UHV) networks ...
Xianhao Fan, Weiqi Qin, Rui Qiu, Yiming Zang, Wu Lu, Yin Zhang, Ruiying Chen, Fangwei Liang, Guangyu Sun, Hanhua Luo, Tiejun Ma, Chuanyang Li, Jun Hu, Weidong Liu, Giovanni Mazzanti, Jinliang He   +15 more
wiley   +1 more source