Results 31 to 40 of about 104 (84)

A robust undervoltage load shedding scheme against voltage instability

TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES, 2016
Undervoltage load shedding (UVLS) is an effective measure for restoring voltage stability as a last resort in emergency conditions. In this paper, a UVLS scheme is proposed considering the uncertainties of load and line parameters. The loading margin is considered as the voltage stability index.
Iman KAFFASHAN, Seyed Mohammad Taghi MIRALI MORTEZAEE, Turaj AMRAEE   +2 more
openaire   +1 more source

Application of Multi-step Undervoltage Load Shedding Schemes to the KEPCO System [PDF]

Journal of Electrical Engineering and Technology, 2009
This paper deals with improvements to the special protection schemes (SPS) which have been applied to the low probability and high impact contingencies in the Korea Electric Power Corporation (KEPCO) system since 2004. Among them, the SPS for voltage instability in the Seoul metropolitan area is considered in this paper, and is a form of event-based ...
Jeong-Hoon Shin, Su-Chul Nam, Jae-Gul Lee, Young-Do Choy, Tae-Kyun Kim, Hwa-Chang Song   +5 more
openaire   +1 more source

Optimal Placement and Sizing of Series and Shunt Compensation for Improving Power Systems Operation

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Power systems are complex, and power demand has constantly increased over time. Moreover, power transmission systems have a limited capacity, causing the increase in demand to be difficult to accommodate. Additional system requirements include maintaining voltages within specific values and limiting voltage drop in the lines to ensure voltage stability,
Yazan Yassin, Ayman Faza, Arnab Biswas
wiley   +1 more source

State‐of‐the‐art of cybersecurity in the power system: Simulation, detection, mitigation, and research gaps

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This paper presents a review of state‐of‐the‐art of cybersecurity in the power system, reviewing available simulation tools for studying the cybersecurity of the power system, classifying vulnerable components of the power system to cyberattacks, and summarizing the adverse effects of a successful cyberattack on each component in the power system ...
Milad Beikbabaei, Ali Mehrizi‐Sani, Chen‐Ching Liu   +2 more
wiley   +1 more source

Enhancing Electric‐Gas–Integrated Energy Systems: Optimal Coupling Strategies for Mitigating Voltage Sag Effects

International Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.
Current research on electricity‐gas–integrated energy systems (EG‐IESs) often overlooks power quality issues prevalent in power systems. Voltage sags, critical and frequent power quality disturbance, significantly affect the EG‐IES due to sensitive coupling devices.
Wei Zhao, Yi Zhang, Jiazhong Zhang, Nan Yang   +3 more
wiley   +1 more source

Investigation of the Stability of the Cameroon Northern Interconnected Grid (NIG): A Transient Analysis

Journal of Control Science and Engineering, Volume 2025, Issue 1, 2025.
Today, the grid has become more complex, and this complexity has exposed it to several unforeseen events that can affect its stability in ways such as component outage, sudden variation in loads, connection of a new generator, and faults. One way to assess the grid’s ability to withstand substantial disturbance is the application of transient stability
Emmanuel Ejuh Che, Chu Donatus Iweh, Patrick Ndinakie Ghogomu, Guy Clarence Semassou, Armand Fopah-Lele, Petko Petkov   +5 more
wiley   +1 more source

Intelligent reinforcement training optimisation of dispatch strategy for provincial power grids with multi‐agent systems: Considering operational risks and backup availability

IET Energy Systems Integration, Volume 6, Issue 2, Page 129-143, June 2024.
Abstract In order to optimise resource allocation within the province, a two‐stage scheduling model for provincial‐level power grids, encompassing day‐ahead and intra‐day stages is proposed. Firstly, a Conditional Generative Adversarial Network is employed to generate scenarios for load and new energy output.
Wenlong Shi, Xiao Han, Xinying Wang, Tianjiao Pu, Dongxia Zhang   +4 more
wiley   +1 more source

Two‐stage self‐adaption security and low‐carbon dispatch strategy of energy storage systems in distribution networks with high proportion of photovoltaics

IET Smart Grid, Volume 7, Issue 3, Page 251-263, June 2024.
Active distribution networks with a high proportion of photovoltaics (PVs) are facing challenges in maintaining voltage stability and low‐carbon operation. The feasibility and superiority of the proposed two‐stage self‐adaptive security and low‐carbon day‐ahead dispatch strategy for ESSs is verified, showing that the voltage stabilisation and lower ...
Lei Chen, Wei Tang, Lu Zhang, Zhaoqi Wang, Jun Liang   +4 more
wiley   +1 more source

Wearable All‐Fabric Hybrid Energy Harvester to Simultaneously Harvest Radiofrequency and Triboelectric Energy

Advanced Science, Volume 11, Issue 17, May 8, 2024.
A novel flexible and wearable hybrid energy harvesting strategy is developed. The system consists of a rectenna, a triboelectric nanogenerator (TENG), and a power management circuit (PMC). An effective fabric circuit board quasi surface mount technology (FCB‐SMT) is proposed for realizing the all‐fabric hybrid energy harvester.
Zhenghao Kou, Chao Zhang, Buyun Yu, Hao Chen, Zhenguo Liu, Weibing Lu   +5 more
wiley   +1 more source

Impacts of grid‐scale battery systems on power system operation, case of Baltic region

IET Smart Grid, Volume 7, Issue 2, Page 101-119, April 2024.
The potential benefits of using grid‐scale battery energy storage systems (BESS) are discussed to address challenges in renewable energy integration. It also presents a case study of Baltic DSOs to examine the necessary changes for integrating BESS.
Roya AhmadiAhangar, Freddy Plaum, Tobias Haring, Imre Drovtar, Tarmo Korotko, Argo Rosin   +5 more
wiley   +1 more source