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

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

Recently, the world’s first 500kV/90kA cost-effective high-voltage AC current limiter, jointly led by Guangzhou Power Supply Bureau of Guangdong Power Grid and developed by China High-Voltage AC Current Limiter Manufacturer, successfully completed artificial short-circuit tests and has been officially connected to the grid for trial operation on the Shunguang Jia Line at the 500kV Guangnan Substation. As a key project under China’s National Key R&D Program, the successful completion of the “

Transformers play an indispensable role in power systems, and almost every electrical device relies on their stable power supply. Sometimes you may find that the transformer's voltage is unstable, or even unbalanced. This phenomenon not only affects the operating efficiency of equipment but also may bring a series of serious safety hazards. What exactly causes transformer voltage imbalance? And how to effectively solve this problem?1.Three-Phase Load ImbalanceThe voltage balance of a transformer

With local development and industrial transfer, more and more enterprises are investing and setting up factories in underdeveloped areas. However, due to the immature development of electricity load and incomplete supporting facilities such as distribution networks, the newly added load can only be connected to the existing rural power grid lines. The distribution network lines in rural areas are characterized by scattered load, small wire diameter, and excessively large power supply radius.Conn