1,968 Result(s)
within
Chapter
**u-**u Zhang
Energy
-
Chapter and Conference Paper
Multi-Physics Field Simulation Analysis of GIS Disconnect Switch Contact Temperature Considering Contact Anomalies
The thermal faults of GIS (Gas Insulated Switchgear) disconnect switch can lead to serious electrical accidents, and the temperature of the contacts is an important indicator for effectively detecting thermal ...
-
Chapter and Conference Paper
A Numerical Study on Oil Pressure Rise Caused by Arcing Faults Inside a Converter Transformer
Oil pressure rise caused by internal faults in converter transformers and the possible resulting tank rupture have long been a serious concern for the power industry. This paper presents a numerical method to ...
-
Chapter and Conference Paper
Study on Overvoltage and Protection of Buried Pipeline Near Lightning Strike Line Considering Soil Grounding Scatter
At present, the cross-adjacent conditions of oil and gas pipelines and power lines are more and more frequent. The lightning overvoltage problem under the condition of “two lines—one ground” cross-adjacent to ...
-
Chapter and Conference Paper
A Novel Method for Fault Diagnosis of Motor Bearings via Chord Transformation Strategy
The unlabeled samples seriously affect the application of data-driven methods in the field of bearing fault diagnosis. Inspired by the music theory knowledge, a bearing fault diagnosis method via chord transfo...
-
Chapter and Conference Paper
Analysis of Aging Degree of Composite Insulators Based on Joint Relaxation Spectrum
In power systems, composite insulators are subjected to strong electric fields and environmental corrosion, and will age and affect the electrical insulation effect; however, existing insulator aging detection...
-
Chapter and Conference Paper
Study on the Influence of Wildfire on Streamer Discharge in Transmission Line Gap
In order to explore the influence of wildfire on the streamer discharge of transmission line gap, combined with the characteristics of the high temperature environment and the change of air gas composition rat...
-
Chapter and Conference Paper
Research on the Braking Characteristics of Electromagnetic Eddy Current Braking
With the aim of researching the braking characteristics of the electromagnetic eddy current brake and the influence of various factors on the braking performance, in this paper, a 3D transient field simulation...
-
Chapter and Conference Paper
Identification of Series Fault Arc Occurred in Motor with Inverter Circuits Under Vibration Conditions
One of the safety risks in electricity supply systems is the series fault arc (SAF). The method for identifying SAFs in electrical connectors for industrial motor with inverter circuits under vibrational situa...
-
Chapter and Conference Paper
Study on the Effect of O2 Content on the Decomposition Characteristics of C5F10O Under Different Buffer Gases
In recent years, C5F10O has aroused a lot of notice as a potential SF6 alternative gas. As a new kind of environmentally friendly insulated gas, the research on the effect of O2 content on the decomposition chara...
-
Chapter and Conference Paper
Analysis of Induced Current of OPGW in 750 kV Transmission Lines
In recent years, the use of optical fiber composite overhead ground wires (OPGW), which are a combination of optical fibers and overhead ground wires, has become increasingly common due to the growing demand f...
-
Chapter and Conference Paper
Influence of Operating Environment on the Aging Characteristics of Composite Insulators
Composite insulators are widely used in power transmission lines due to the excellent electrical properties. However, the aging effect of composite insulators can be observed after a long-term operation under ...
-
Chapter
The Prospects for Improving Green Innovation Ability of National Economic and Technological Park in the Yellow River Basin of China
The sustainable innovation capability of the National Economic and Technological Park in the Yellow River basin is crucial to the ecological environment protection and high-quality regional development of the ...
-
Chapter and Conference Paper
Novel DC Hybrid Circuit Breaker with Self-charging Operation
With the rapid development of distributed power supply and the rapid growth of DC loads, DC distribution network has become the future development trend of power grid with its advantages of flexible control, h...
-
Chapter and Conference Paper
Study on Change Law of Pressure and Hydrogen Gas Under Partial Discharge Defects in Transformer Bushing
For a long time, due to the lack of effective online monitoring technology for insulation status of transformer bushing equipment, some early latent local discharge insulation defects could not be detected ear...
-
Chapter and Conference Paper
The Roof Cable Terminal Simulation Calculation Study Based on Electric-Thermal Coupling Physical Field
The roof cable accessories of the motor train unit are affected by various factors such as electricity, heat and airflow. Conducting simulation and calculation research based on electric-thermal coupled can ef...
-
Chapter and Conference Paper
Communication Enhancement Techniques for Intelligent Maintenance and Inspection Devices of Power Systems Based on RIS
Intelligent maintenance and inspection devices are critical for ensuring the safe and reliable operation of power systems. However, these devices require reliable and high-bandwidth communication channels, whi...
-
Chapter and Conference Paper
Simulation of Hot Spot Temperature Rise of Dry Bridge Reactor Based on Highly Conductive Epoxy Composites
In this paper, based on the theory of multi-physical field coupling, the coupled calculation model of fluid-temperature field is established. The data of dry reactor temperature field in normal operation are c...
-
Chapter and Conference Paper
Dynamic Behavior of Suspended Bubbles in Insulating Oil Correlation with Flow Field Distribution
In recent years, arcing faults inside large oil-immersed power transformers have been frequent. Suspended bubbles, as the main product of high temperature, high humidity, material aging and cracking gas produc...
-
Chapter and Conference Paper
The Influence Mechanism that Micro Grain-Boundary Structure Parameters of ZnO Varistor to the Macroscopic Electrical Characteristics
ZnO varistors have excellent nonlinear voltage-current characteristics, are widely used in overvoltage protection of electrical equipment. The nonlinear behavior of ZnO varistors is attributed to the double Sc...
-
Chapter and Conference Paper
Condition Monitoring Technology for Temperature and Strain Status of Disconnector Based on SAW
Disconnector is an important equipment for power transmission and distribution in the power system, and its working state has an important impact on the safety and reliability of the power system. However, due...
