Haihong three-dimensional wound core amorphous alloy wire-wound oil substation successfully passed all tests

A few days ago, exciting news came. At the request of users, two SH21-M·RL-200/10-NX2 amorphous alloy three-dimensional wound core oil-immersed transformers (low-voltage layered type) were randomly selected from the products supplied by Haihong. coil structure) for inspection, the noise and sound pressure levels of these two products are both 41.6dB (A), and they have passed all the tests including the short-circuit test of 100% and 105% of the test current at one time, and the reactance changes after the short-circuit test. More than 0.75%, far less than the limit value of the test standard, reflecting the super reliability and short-circuit resistance of Haihong products.

This solves the concerns of power grid enterprises in vigorously promoting the application of amorphous alloy transformers in the power grid system. At the same time, the reliability and short-circuit resistance of the low-voltage layered coil structure product scheme have been verified in practice. The application of this scheme will greatly improve the three-dimensional wound core amorphous The output capacity of alloy transformers will promote the "transformer energy efficiency improvement plan (2021-2023)" mentioned in the "transformer energy efficiency improvement plan (2021-2023)" to "accelerate the improvement of transformer energy efficiency in power grid enterprises, promote power grid enterprises to carry out a comprehensive survey of transformers operating on the grid, formulate elimination plans and organize their implementation. .By 2023, it is of great significance and positive effect to phase out transformers that do not meet the requirements of national energy efficiency standards.

Haihong Electric has insisted on research and development of amorphous alloy three-dimensional wound core transformers since 2012. Through the joint efforts of the company's five research and development teams, product research and development, tooling and mould, equipment manufacturing, material research, and testing and testing, it has overcome non-crystalline alloy transformers through more than 300 trial production plans. Crystal alloy strips are thin, hard, brittle, and difficult to control noise, which are recognized by the industry as difficult problems. The project was approved and developed successfully that year. This product effectively solves the inherent shortcomings of the traditional planar amorphous core technology. With the technical characteristics of energy saving, safety and reliability, and low noise, it has been used in batches in the Southern Power Grid and the State Grid. More than 20,000 units have been connected to the grid for stable operation, and the operating record is very good. good.

Haihong amorphous alloy three-dimensional wound core transformer has obtained 5 authorized invention patents and 15 utility model patents at home and abroad. The core patent "amorphous alloy transformer core with three-dimensional triangular structure" won the 18th China Patent Excellence Award. Haihong has mastered the core technology and manufacturing process of amorphous alloy three-dimensional wound core transformers, broke through the current situation in which amorphous alloy transformers are generally used in 10kV voltage level and small-capacity products in the industry, and successfully developed 10kV/3150kVA large-capacity amorphous alloy three-dimensional coils Core oil-immersed transformer and 33kV   /3300kVA open ventilated amorphous alloy 3D wound core traction rectification dry-type transformer.

In the past two years, due to the national "double carbon" goal, the amorphous alloy three-dimensional wound core transformer is in line with the "double carbon" goal, "green development", "high-quality development" and other national policies due to its energy-saving and reliable technical characteristics.   It has been favored by the State Grid, and many provinces have adopted a three-dimensional wound core structure in the bidding of amorphous transformers.

The wave of innovation is surging, and it is time to forge ahead. As a practitioner who actively implements the national "dual carbon" strategy, Haihong has always driven transformation and upgrading with innovation, actively implemented the national energy saving "dual control" policy, comprehensively promoted the green development strategy of energy saving, environmental protection, safety and high efficiency, and played a three-dimensional coil core The benchmarking role of high-efficiency and energy-saving transformers leads the development of three-dimensional wound core energy-saving technology in the industry, and helps the efficient advancement of the "double carbon" goal.