Results 51 to 60 of about 1,517 (163)
Trends of European research and development in district heating technologies [PDF]
There is a considerable diversity of district heating (DH) technologies, components and interaction in EU countries. The trends and developments of DH are investigated in this paper. Research of four areas related to DH systems and their interaction with:
Agrell +91 more
core +1 more source
Low‐probability but high‐impact events pose growing risks to power system security, particularly in renewable‐rich and highly digitalised electricity systems, affecting generation, networks, loads, and cyber‐communication layers. This paper reviews power system resilience issues and potentials, highlighting the role of meteorological factors, advanced ...
Jin Zhao, Xi Wang, Xuzhe Song, Yang Shen
wiley +1 more source
The SF6 Decomposition Mechanism: Background and Significance [PDF]
Gas Insulated Switchgear (GIS) has been widely used in substations. The insulating medium used in GIS is sulfur hexafluoride (SF6) gas. However, the internal insulation defect existed in GIS would inevitably lead to partial discharge (PD), and cause the ...
Tang, Ju +3 more
core +1 more source
A series resistive‐capacitive divider for harmonic voltage measurement of gas‐insulated switchgear was studied. It can step down the voltage while amplifying the proportion of harmonics in the total sensed voltage, thereby increasing the significant figure for the measurement and enabling the accurate measurement of high‐order, low‐amplitude harmonics.
Huizhong Pang +6 more
wiley +1 more source
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 +3 more
doaj +1 more source
The Influence of Atmospheric Overvoltages on High-Voltage SF6 Substations [PDF]
Very fast overvoltages are characteristic of high-voltage metal-enclosed SF6 insulated substations. During the transient phenomenon, on the SF6 substation enclosure an undesired, short-lasting induced overvoltage may appear, which cannot be prevented ...
Marinko Barukčić +2 more
core +1 more source
Application of T&D Circuit Segmentation for Improved Resilience—A Texas Case Study
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 +3 more
wiley +1 more source
Research Status of Substation Vulnerability Under the Coupling Effect of Earthquake and Strong Wind
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 +5 more
wiley +1 more source
Trends in Measuring Instrument Transformers for Gas-Insulated Switchgears: A Review
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 +3 more
doaj +1 more source
The low energy efficiency, high heat loss, and insufficient dynamic load matching of district heating systems (DHS) restrict its low‐carbon transition. This paper reviews the research progress of source‐network‐load modeling and optimization in DHS system, focusing on the key technologies of heat source modeling, pipe network modeling, load forecasting,
Shengtao Ye +9 more
wiley +1 more source

