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

I. Overall SituationOverall, State Grid Corporation of China (SGCC) and China Southern Power Grid (CSG) currently maintain a pragmatic stance toward solid-state transformers (SSTs)—actively supporting R&D while prioritizing pilot demonstrations. Both grid companies are advancing SST feasibility through technology research and demonstration projects, laying the groundwork for potential large-scale deployment in the future. Project State Grid (and Affiliated Units) China Southern Powe

The GW8 isolating switch is a critical piece of equipment in power systems and is primarily used in the following applications:Applications in Power Systems:The GW8 isolating switch is widely employed in power plants, substations, and transmission and distribution lines. In power plants, it isolates the connection between generators and busbars or transformers, facilitating generator startup, shutdown, and maintenance. In substations, it isolates busbars or transformers operating at different vo

Application of Isolating Switches in Generator Neutral Grounding Resistor CabinetsIsolating switches are commonly installed in NS-FZ generator neutral grounding resistor cabinets. They provide a clearly visible disconnection point, ensuring the safety of maintenance and testing personnel. However, as high-voltage devices without arc-quenching capability, isolating switches must only be operated when the circuit is de-energized—i.e., under no-load conditions.The primary function of an isolating s

Solar panel coatings are protective layers applied to the surface of photovoltaic (PV) modules, primarily designed to enhance water resistance, corrosion resistance, and UV protection. They also help reduce the negative impact of dust, haze, and other contaminants adhering to the panel surface, which can lower power generation efficiency. Solar panel coatings are typically composed of various organic or inorganic materials that protect the panel surface and improve its ability to absorb sunlight

I. Research BackgroundPower System Transformation NeedsChanges in energy structure are placing higher demands on power systems. Traditional power systems are transitioning toward new-generation power systems, with the core differences between them outlined as follows: Dimension Traditional Power System New-Type Power System Technical Foundation Form Mechanical Electromagnetic System Dominated by Synchronous Machines and Power Electronic Equipment Generation-Side Form M

Solid-State Transformers (SST): The Future of Intelligent Power ConversionA solid-state transformer (SST), also known as a power electronic transformer (PET), is a static power conversion device that integrates power electronics, high-frequency transformation, and advanced control systems based on electromagnetic induction. It enables the conversion of electrical energy from one set of voltage, current, and frequency characteristics to another—while offering active control, bidirectional power f

Solid-State Transformers (SST): Enabling Intelligent, Efficient, and Flexible Power SystemsThe solid-state transformer (SST), also known as an Electronic Power Transformer (EPT), is a static power conversion device that integrates power electronic circuitry with high-frequency energy transfer based on electromagnetic induction. It enables the transformation of electrical energy from one set of voltage, current, and frequency characteristics to another—while offering far greater control and funct

Solid-state transformers (SST) offer high efficiency, reliability, and flexibility, making them suitable for a wide range of applications: Power Systems: In the upgrade and replacement of traditional transformers, solid-state transformers show significant development potential and market prospects. SSTs enable efficient, stable power conversion along with intelligent control and management, helping to enhance the reliability, adaptability, and intelligence of power systems. Electric Vehicle (EV)

Solid State Transformer (SST)A Solid State Transformer (SST) is a power conversion device that uses modern power electronics technology and semiconductor devices to achieve voltage transformation and energy transfer.Key Differences from Conventional Transformers Different Operating Principles Conventional Transformer: Based on electromagnetic induction. It changes voltage through electromagnetic coupling between primary and secondary windings via an iron core. This is essentially a direct "mag

1.Rectifier Transformer: Principle and OverviewA rectifier transformer is a specialized transformer designed to supply rectifier systems. Its working principle is the same as that of a conventional transformer — it operates based on electromagnetic induction and is used to transform alternating voltage. A typical transformer has two electrically isolated windings — primary and secondary — wound around a common iron core.When the primary winding is connected to an AC power source, alternating cur