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Chapter and Conference Paper
Simulation Study on Spread Characteristics of Wildfire Near Transmission Lines
Wildfires have become an important factor threatening the safe and stable operation of transmission lines, and large-scale wildfires can significantly reduce the air gap insulation level of transmission lines ...
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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 ...
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Article
Antiferroelectric-ferroelectric crossover induced by composition variation in AgNbO3-based lead-free ceramics
AgNbO3 antiferroelectric (AFE) ceramics have attracted much attention because of their high-energy storage performance and environment-friendly characteristics. In this paper, Sb2O5-doped AgNbO3 ceramics are prep...
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Chapter and Conference Paper
Electric Field Distortion and Corona Inception Characteristics on the Surface of Insulating Material Under High Humidity and High Pollution Conditions
Surface discharge of insulating materials is the main form of insulation failure of electrical equipment under special operating environment such as high humidity, high pollution and easy condensation. Therefo...
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Book
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Chapter
Corona Onset Voltage Prediction of Electrode Structures
Corona discharge is a unique self-sustained gas discharge form in extremely nonuniform electric field. The determination of corona onset voltage is of vital importance for corona control of high voltage conduc...
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Chapter
Impulse Discharge Voltage Prediction of Air Gaps
The lightning overvoltage and switching overvoltage in power systems are both impulse voltages with short duration time and large change rate, under which the air gap breakdown characteristics are different fr...
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Chapter
Background of Air Insulation Prediction Research
The background of air insulation prediction research is briefly reviewed in this chapter, including the research and development on air discharge tests, discharge theories and physical models. Some beneficial ...
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Chapter
Air Gap Discharge Voltage Prediction Model
The proposed air insulation prediction model is established based on support vector machine. In this chapter, the theoretical basis and implementation procedure of the prediction method are introduced in detai...
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Chapter
Power Frequency Breakdown Voltage Prediction of Air Gaps
Air gap breakdown voltage is an important basis for the design of air insulation structure, which is related to applied voltage type and voltage waveform. The power frequency AC voltage and DC voltage are coll...
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Chapter
Engineering Applications of Air Insulation Prediction Model
The gap configurations in power transmission and transformation projects are complex and diverse. The costly and time-consuming full-scale discharge tests cannot exhaustively reproduce all the gap configuratio...
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Chapter
Theoretical Foundation of Air Insulation Prediction
Air insulation mainly depends on the macro factors including gap structure, applied voltage waveform and air conditions. In this chapter, the influence factors of air discharge are briefly analyzed, and the en...
