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

On-load tap changing is a voltage regulation method that allows a transformer to adjust its output voltage by switching tap positions while operating under load. Power electronic switching components offer advantages such as frequent on/off capability, spark-free operation, and long service life, making them suitable for use as on-load tap changers in distribution transformers. This article first introduces the operational regulations for on-load tap-changing transformers, then explains their vo

Induction voltage regulators are classified into three-phase AC and single-phase types.The structure of a three-phase induction voltage regulator is similar to that of a three-phase wound-rotor induction motor. The key differences are that the rotor’s rotation range in an induction voltage regulator is limited, and its stator and rotor windings are interconnected. The internal wiring diagram of a three-phase induction voltage regulator is shown in Figure 2-28(a), which illustrates only one phase

Voltage regulators (szsger.com) play a crucial role in power systems. Whether single-phase or three-phase, they serve to regulate voltage, stabilize power supply, and protect equipment within their respective application scenarios. Understanding the basic principles and main structures of these two types of voltage regulators is of great significance for the design and operation & maintenance of power systems. This article will discuss the basic principles and main structures of single-phase

As an essential component of the distribution network, low-voltage distribution areas (hereinafter referred to as "low-voltage transformer zones") directly affect the economic benefits of power supply enterprises and the quality of electricity consumption for end-users through their line loss issues. However, traditional management approaches have obvious shortcomings in terms of accuracy and efficiency. In this context, the application of smart grid technologies provides new solutions for line

With the continuous improvement of living standards in rural areas, household appliances and various types of production-oriented electrical equipment have been widely popularized. However, the development of power grids in some remote areas is relatively lagging behind, failing to meet the rapidly growing demand for electricity load. These areas are vast with sparse population, large power supply line radius, and commonly suffer from low terminal voltage, unstable voltage, failure to start moto

Recently, three IEC standards on insulators, led by China for the first time, have been officially published. These standards primarily address the coupling markings, dimensions, and tests of insulator end fittings, specifically including IEC 60120:2020, IEC 60372:2020, and IEC 60471:2020. These three standards were jointly completed under the leadership and coordination of numerous experts from the National Technical Committee on Insulators of China (SAC/TC80). The publication of these standard

Voltage regulators (szsger.com) play a crucial role in modern industry, providing strong support for the stable operation of various equipment. However, during use, voltage regulators may encounter various problems that prevent equipment from operating normally. This not only affects production efficiency but also increases operational costs. This article will help you gain an in-depth understanding of common voltage regulator issues and provide practical solutions to ensure the stable operation

Adjusting the response speed of a boost voltage regulator is a complex issue involving power systems and electronic engineering. The speed regulation of a boost voltage regulator primarily concerns the design of its controller and the optimization of its control system to achieve fast and stable responses. Below is a detailed 1500-word article on how to adjust the response speed of a boost voltage regulator.Part 1: Basic Principles and Applications of Boost Voltage RegulatorsA boost voltage regu

1. Project OverviewThis project involves the construction of the new Jakarta–Bandung High-Speed Railway, with a mainline length of 142.3 km, including 76.79 km of bridges (54.5%), 16.47 km of tunnels (11.69%), and 47.64 km of embankments (33.81%). Four stations—Halim, Karawang, Padalarang, and Tegal Luar—have been constructed. The Jakarta–Bandung HSR mainline is 142.3 km long, designed for a maximum speed of 350 km/h, with a double-track spacing of 4.6 m, including approximately 83.6 km of balla

On June 11, at the Liuzhou Converter Station of the Wudongde Power Transmission to Guangdong and Guangxi UHV Multi-Terminal Flexible DC Demonstration Project (shortened as the “Kun-Liu-Long DC Project”), the first ±800 kV flexible DC wall bushing independently developed by China Flexible DC Wall Bushing Manufacturer was successfully energized and has been operating stably. The commissioning of this project has drawn significant attention from major mainstream media outlets.The successful operati