Jinggong Qiangdian strengthens the power grid framework, and the high-voltage transformer of the power substation helps upgrade the construction of the power grid hub.

With the continuous acceleration of the construction of the new power system, regional power grid framework optimization, expansion and upgrading of substations, and renovation of high-voltage transmission lines are all being comprehensively advanced. The stability, safety and efficiency of the core main equipment of high-voltage substations have become the key core for the reliable operation of the power grid. To adapt to the high-standard construction requirements of high-voltage transmission and transformation projects, relying on the mature research and manufacturing experience of power transmission and transformation equipment, the enterprise has launched a high-voltage transformer for power substations. With its high withstand voltage level, strong overload capacity, ultra-low loss, and ultimate safety and stability, it is widely applied in regional hub substations, industrial and mining dedicated substations, new energy boosting substations, and key projects of urban and rural main power grids, laying a core equipment barrier for the safe, stable, efficient, and economical operation of the high-voltage power grid.
As the core hub equipment of high-voltage substations, the power transformer undertakes the key functions of voltage transformation, power transmission and grid voltage regulation. The operating status of the equipment directly determines the power supply reliability of the entire power grid. In response to industry pain points such as weak withstand voltage performance, high load loss, poor adaptability to harsh working conditions, and high maintenance difficulty of traditional high-voltage transformers, the high-voltage transformer for power substations launched in this research has completed comprehensive technical upgrades. The equipment adopts high-purity high-magnetic-conductivity silicon steel sheet cores and an optimized laminating process, effectively reducing hysteresis loss and eddy current loss, precisely optimizing the winding structure layout, significantly improving the efficiency of power conversion, and all loss indicators exceed industry standards. The long-term operation energy-saving effect is remarkable, effectively reducing power transmission loss and maintenance energy consumption of the high-voltage power grid. It is specifically adapted to the working environment of high-voltage, large-load, and uninterrupted operation of substations. The equipment adopts a high-strength insulation structure and a multi-layer insulation protection design, combined with a vacuum drying and vacuum oil injection integrated process, eliminating internal moisture and impurity residues, with high insulation strength and excellent withstand voltage performance, capable of stably adapting to high-voltage transmission conditions, effectively resisting sudden conditions such as voltage fluctuations, instantaneous overload, and short-circuit impacts. At the same time, the equipment is equipped with a high-precision pressure release system, gas protection device, and temperature monitoring system, which can monitor the equipment operation status in real time, quickly issue warnings and provide precise protection in case of abnormal conditions, preventing the spread of equipment failures, and providing comprehensive protection for the safe and stable operation of the high-voltage substation system. In response to the complex operating environment of outdoor substations, the equipment adopts an integrated fully-sealed box structure, with precise overall welding and excellent sealing performance, effectively isolating rain, dust, dampness, salt fog and corrosive gases from invading, possessing strong resistance to moisture, dust, corrosion, aging and other capabilities, and can operate stably in extreme temperature differences, high humidity and rain, and sandstorms in the wild environment for a long time. The overall structure design is scientific and reasonable, with excellent seismic performance, uniform equipment operating temperature rise, low noise, and no leakage hazards, significantly reducing the frequency of later maintenance and achieving long-term low maintenance and high reliability operation.
The product strictly follows the GB1094 series power transformer national standards and power grid engineering construction norms, from raw material selection, core winding, winding assembly, vacuum treatment to the final factory test; each process implements a strict quality control system. Before leaving the factory, a complete set of type tests such as withstand voltage test, loss test, temperature rise test, sealing performance test, and short-circuit bearing capacity test are completed. The product quality is stable, performance is reliable, and it fully meets the engineering requirements of regular, high-intensity, and uninterrupted operation of high-voltage substations, and can be adapted to the construction, expansion, and renovation projects of high-voltage substations of all grades up to 110kV and below.
Currently, the process of upgrading the power grid framework, integrating new energy into the grid, and transforming the power grid intelligence is continuously accelerating, and the high-end, reliable, and energy-saving of high-voltage transmission and transformation equipment has become an inevitable trend of industry development. In the future, enterprises will continue to focus on technological innovation in core equipment for high-voltage power transmission and transformation, delve deeply into the research and development, iteration and process improvement of high-voltage transformers and complete sets of power transformation equipment, continuously create high-performance, low-energy consumption and high-security power core products, and fully empower key projects such as regional power grid optimization and upgrading, construction of new energy bases, and industrial power support. This will provide solid equipment support for the high-quality development of the new power system.