Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

The test site layout must be reasonable and organized. High-voltage testing equipment should be placed close to the test object, live parts must be isolated from each other, and remain within the clear line of sight of test personnel. Operational procedures must be rigorous and systematic. Unless otherwise specified, voltage must not be suddenly applied or removed during operation. In case of abnormal conditions, voltage increase must be stopped immediately, pressure rapidly reduced, power disc

1. Principles of Ultraviolet Imaging TechnologyUltraviolet (UV) imaging technology leverages corona discharge and other localized discharge phenomena, which occur when the local voltage stress on a live conductor exceeds a critical threshold, ionizing the surrounding air and generating corona. During power equipment operation, corona, flashover, or arcing often arise due to design flaws, manufacturing defects, improper installation, or inadequate maintenance. In such discharges, electrons in the

In modern power systems and materials science research, ice coating test chambers have become increasingly indispensable.These chambers simulate complex climatic conditions such as rain, snow, freezing rain, and ice formation, providing reliable data support for scientific research, production, and quality inspection.As energy transition progresses and power transmission networks expand, the diverse applications of ice coating test chambers are becoming ever more prominent.What Is an Ice Coating

A power system is a large-scale network composed of numerous interconnected components, including generation, transmission, substation, distribution, and end-user equipment. Failures in electrical equipment can not only lead to unexpected outages and financial losses for power utilities, but also cause significant economic damage to consumers. Therefore, the reliability and operational status of these devices directly determine the stability and safety of the entire power system, as well as the

1.Shortcomings of Existing Temperature Online Monitoring Products1.1 Temperature Controller for Dry-Type Transformer Winding MonitoringPlatinum resistance sensors are used in temperature controllers. Since they lack insulation, the sensor must be disconnected from the controller during withstand voltage tests. However, overvoltage during actual operation often damages the controller. Additionally, the sensor's lead wires cannot withstand the 350°C high temperature required for thermal and dynami

I. Overview of Solid-State Transformers (SST)A Solid-State Transformer (SST) is an advanced power conversion device that integrates power semiconductors, high-frequency transformers, and control circuits.Compared with traditional transformers, SST supports AC/AC, AC/DC, and DC/DC conversions, and features advantages such as bidirectional power flow, intelligent control, and a compact design.Its main topologies include single-stage, two-stage (with LVDC or HVDC links), and three-stage structures,

DG Matrix and Resilient Power say their solid - state transformers can reduce the cost, time, and complexity of supplying power to data centers, electric vehicle (EV) charging hubs, and the like. For decades, electrical engineers have dreamed of a device that can seamlessly connect solar panels, battery systems, and on - site generators to high - power equipment such as EV chargers or data center servers without the need for a large amount of expensive hardware to make them work together.Now, th

1. What is a Solid-State Transformer (SST)?1.1 Fundamentals and Limitations of Conventional TransformersThe article first reviews the history (e.g., Stanley's 1886 patent) and basic principles of conventional transformers. Based on electromagnetic induction, traditional transformers consist of silicon steel cores, copper or aluminum windings, and insulation/cooling systems (mineral oil or dry-type). They operate at fixed frequencies (50/60 Hz or 16⅔ Hz), with fixed voltage transformation ratios,

Role and Selection of Microcomputer Integrated Protection Devices in High-Voltage SwitchgearIn recent years, the application of microcomputer integrated protection devices in medium- and high-voltage power distribution system projects has increased significantly. These devices are user-friendly and overcome the drawbacks of traditional relay protection, such as complex wiring, low reliability, and cumbersome setting and debugging procedures. Microcomputer integrated protection devices feature co

What is a microcomputer protection device?Answer: A microcomputer protection device is an automatic device that can detect faults or abnormal operating conditions in electrical equipment within a power system, and act to trip circuit breakers or issue alarm signals.What are the basic functions of microcomputer protection?Answer: Automatically, rapidly, and selectively isolate faulty equipment from the system by tripping circuit breakers, ensuring non-faulty equipment resumes normal operation qui