SOLID-STATE TRANSFORMER

Solid-state transformers, a next-generation intelligent substation device based on silicon carbide semiconductor devices, employ a high-frequency electromagnetic isolation link and a modular multilevel converter architecture. They can convert 10 kV medium-voltage AC to 800 V low-voltage DC while integrating harmonic suppression, reactive power compensation, bidirectional power management, and fault‑tolerance functions, thereby enhancing power quality and system stability. Compared with conventional line-frequency transformers that only perform voltage transformation, this equipment offers millisecond‑level response, supports multiple types of energy interfaces, boasts high power density, and maintains high efficiency across all operating conditions, making it well suited for advanced power systems, high‑density computing infrastructures, and high‑power charging and battery‑swapping applications.

MICROGRID COORDINATION CONTROL CABINET

The STMG-600 microgrid coordinated control cabinet is a core component of the microgrid, responsible for collecting operational data from energy storage systems, photovoltaic sources, wind turbines, and loads. Based on control strategies issued by the EMS, it coordinates the output of each microsource to ensure compliance with predefined constraints. The cabinet integrates a server, switch, GPS, and a touch-screen display, supports redundant power supplies and UPS backup, and can be equipped with grid‑connected or islanded micro‑protection devices. It features a proprietary central coordination controller that executes millisecond‑ and second‑level control strategies, encompassing functions such as data acquisition, power forecasting, peak shaving and valley filling, demand response, black start, and virtual power plant interaction, thereby ensuring the microgrid's safe, stable, and efficient operation.

MICROGRID COORDINATION CONTROL CABINET

A one-stop condition‑assessment platform that integrates monitoring functions for dissolved gases in oil, partial discharge, bushing dielectric loss and capacitance, winding hotspot temperature, on‑load tap changer vibration and current, and core grounding current, enabling comprehensive detection of both sudden failures and latent defects. Featuring a modular design with magnetic‑attachment or snap‑fit mounting, it supports live‑line quick disassembly and reassembly; built‑in algorithms deliver fault diagnosis and insulation‑life assessment. The software platform offers equipment asset management, alarm configuration, photon‑tag visualization, and data‑forwarding capabilities, helping operations and maintenance personnel track equipment health trends, develop optimal maintenance schedules, effectively prevent unexpected incidents, and extend transformer service life.