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

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

Development Cycle of Solid-State TransformersThe development cycle for solid-state transformers (SST) varies depending on the manufacturer and technical approach, but it generally includes the following stages: Technology Research and Design Phase: The duration of this phase depends on the complexity and scale of the product. It involves researching relevant technologies, designing solutions, and conducting experimental validations. This phase can take several months to several years. Prototype

The 110kV substation at our plant was constructed and put into operation in February 2005. The 110kV system employs ZF4-126\1250-31.5 type SF6 GIS (Gas-Insulated Switchgear) from Beijing Switchgear Factory, comprising seven bays and 29 SF6 gas compartments, including five circuit breaker compartments. Each circuit breaker compartment is equipped with an SF6 gas density relay. Our plant uses the MTK-1 model oil-filled density relays manufactured by Shanghai Xinyuan Instrument Factory. These relay

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 Transformers (SST): The Future of Smart Power ConversionSolid-state transformers (SSTs), also known as smart transformers, Power Electronic Transformers (PETs), or Electronic Power Transformers (EPTs), represent a transformative advancement in electrical power systems. Unlike conventional transformers, SSTs leverage power electronic converters, high-frequency magnetic components, and intelligent control systems to deliver not only voltage transformation but also advanced grid managem

ransformer Capacity Selection: Ensuring Reliable and Efficient Power System OperationTransformer capacity refers to the apparent power at the transformer’s main tap position. The value indicated on the nameplate is known as the rated capacity, typically expressed in kilovolt-amperes (kVA). In practical operation, improperly sized transformers can lead to either under-loading (due to oversizing) or overloading/overcurrent conditions, which may result in equipment overheating, reduced efficiency,

IntroductionSF6 gas is widely used as an insulating and arc-quenching medium in high-voltage and extra-high-voltage electrical equipment due to its excellent insulation, arc-extinguishing properties, and chemical stability. The insulation strength and arc-quenching capability of electrical equipment depend on the density of SF6 gas. A decrease in SF6 gas density can lead to two main hazards: Reduced dielectric strength of the equipment; Decreased interrupting capacity of circuit breakers.Additio

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