This paper studies the mechanism and influencing factors of resonance overvoltage EHV transmission lines caused by lightning. By analyzing time domain steady state simplified circuit, physical is revealed. The characteristics transient process waveform are analyzed using electromagnetic simulation. main amplitude also studied. results show that: 1) During uneven open-phase conditions, resonant ...

This paper introduces a novel non-integral method for calculating AC capacitor voltage in shunt hybrid active power filters (SHAPFs). These commonly use passive (PPFs) that can introduce containing harmonics into the capacitor, leading to overvoltage situations be dangerous. To avoid accidents due overvoltage, it is necessary monitor continuously. The proposed enables calculation of across usin...

Abstract Arrester is used to protect various electrical equipment in the power system from lightning overvoltage, working frequency transient overvoltage impact and damage. Zinc oxide arrester widely system. Creepage distance a necessary item of performance test. It project for factory testing centralized network access testing. At present, measurement creepage mainly adopts artificial method p...

This application example describes how Motion Control applications with the output stages for servo, DC and stepper motors by Beckhoff are optimized by the utilization of buffer capacitors. The buffer capacitor terminals EL9570 for EtherCAT and KL9570 for K-Bus stabilize the voltage supply by absorbing the fed back energy and dumping the energy that the buffer capacitor cannot protect against i...

This paper was presented as a summary tutorial aimed at the French-speaking Canadian community to solicit their comments on the development of the IEEE Std 587 Guide. The paper has been translated into English by the author to make the English-speaking community aware of that paper, which served at that time as one output for the release of the extensive test results that were reported in the 3...

Traditionally, the protection of power transformers has been relegated to the application of transformer differential and backup overcurrent relays to provide shortcircuit protection. With the advent of modern multifunction transformer packages, differential and overcurrent protection are only two of many protective and logic functions that can be incorporated into the transformer protection pa...

A first-principles-based charge-discharge model was developed to simulate the capacity fade of Li-ion batteries. The model is based on the loss of active lithium ions due to solvent reduction reaction and on the rise of the anode film resistance. The effect of parameters such as exchange current density, depth of discharge ~DOD!, end of charge voltage, film resistance, and the overvoltage of pa...

Modern power converters frequently require snubberless operation of p-i-n diodes [1]. Due to the presence of fast-switching components, like last-generation GTOs and IGBTs, the diodes must be able to withstand, at turn-off, quick inductive switching, i.e., large, negative time derivatives of the diode current ((dID/dt)1<0) without large overvoltages, which requires a limited time derivative ((d...