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

Electric Power Dispatching in Modern Power SystemsThe power system is a critical infrastructure of modern society, providing essential electrical energy for industrial, commercial, and residential use. As the core of power system operation and management, electric power dispatching aims to meet electricity demand while ensuring grid stability and economic efficiency.1. Basic Principles of Electric Power DispatchingThe fundamental principle of power dispatching is to balance supply and demand by

The Role of Harmonic Detection in Ensuring Power System Stability1. Importance of Harmonic DetectionHarmonic detection is a critical method for assessing the level of harmonic pollution in power systems, identifying harmonic sources, and predicting the potential impact of harmonics on the grid and connected equipment. With the widespread use of power electronics and the increasing number of nonlinear loads, harmonic pollution in power grids has become increasingly severe. Harmonics not only disr

Load Banks in Power System Testing: Applications and AdvantagesThe power system is a core infrastructure of modern society, and its stability and reliability directly affect the normal operation of industry, commerce, and daily life. To ensure efficient operation under various operating conditions, load banks—critical testing equipment—are widely used in power system testing and validation. This article explores the application scenarios and unique advantages of load banks in power system testin

The table below covers key decision criteria from requirements to implementation in the core dimensions of solid-state transformer selection, which you can compare item by item. Evaluation Dimension Key Considerations & Selection Criteria Explanation & Recommendations Core Requirements and Scenario Matching Primary Application Objective: Is the goal to achieve extreme efficiency (e.g., AIDC), require high power density (e.g., microgrid), or improve power quality (e.g., s

Two Critical and Challenging Subsystems in Solid-State Transformer (SST) DesignAuxiliary Power Supply and Thermal Management System.Although they do not directly participate in the main power conversion, they serve as the "lifeline" and "guardian" ensuring stable and reliable operation of the main circuit.Auxiliary Power Supply: The System's "Pacemaker"The auxiliary power supply provides power for the "brain" and "nerves" of the entire solid-state transformer. Its reliability directly determines

Transformers and Power Quality MonitoringThe transformer is a core component of the power system. Power quality monitoring is fundamental to ensuring transformer safety, improving system efficiency, and reducing operation and maintenance costs—directly impacting the reliability and performance of the entire power network.Why Perform Power Quality Testing on Transformers? Ensure Safe Transformer OperationPower quality issues—such as harmonics, voltage fluctuations, and load imbalance—can cause ov

This paper briefly outlines the advantages and technical characteristics of GIS (Gas-Insulated Switchgear) equipment, and elaborates on several critical quality control points and process control measures during on-site installation. It emphasizes that on-site withstand voltage tests can only partially reflect the overall quality and installation workmanship of GIS equipment. Only by strengthening comprehensive quality control throughout the entire installation process—especially in key areas su

Purpose of Grounding System Functional Grounding (Working Grounding):In power systems, grounding is required for normal operation, such as neutral point grounding. This type of grounding is known as working grounding. Protective Grounding:The metal enclosures of electrical equipment may become energized due to insulation failure. To prevent electric shock hazards to personnel, grounding is provided and is referred to as protective grounding. Overvoltage Protection Grounding:Grounding is installe

1. Pre-Installation PreparationsBefore commencing installation work, the following preparatory steps must be completed: Organization and Training: Organize training sessions for all construction personnel on relevant regulations,technical standards, and construction procedures. Special emphasis should be placed on safety protocols. Site Survey: Examine the intended location of the circuit breaker, its foundation, and the layout of surrounding equipment and wiring to prevent accidental contact wi

1. Maintaining and Restoring the Factory Insulation ConditionWhen a transformer undergoes factory acceptance tests, its insulation condition is at its optimal state. Thereafter, the insulation condition tends to deteriorate, and the installation phase may be a critical period for sudden degradation. In extreme cases, the dielectric strength may drop to the point of failure, leading to coil burnout immediately upon energization. Under normal circumstances, poor installation quality leaves behind