State Grid Materials Co., LTD. (referred to as "State Grid Materials Company"), as the material quality supervision business support unit of State Grid Corporation, closely focuses on the essential safety construction requirements of the power grid, strives to practice the strategy of "quality strong network", pioneering and innovative, and strives to create a new situation of material quality supervision and management of "system optimization, control in place, comprehensive coverage and innovation coordination". Promote the construction of modern (smart) supply chains, and provide a strong guarantee for the realization of a strong power grid.

   

Strengthen the quality control of main equipment

On the basis of the regular supervision of provincial companies, the State Grid Materials Company innovatively carried out the "full-node, multi-dimensional" control before the main equipment of the transformer is put into operation, and strengthened the implementation of the main responsibility of the supplier.



First, the main equipment manufacturing inspection. Set up an expert team, formulate inspection standards, and focus on the inspection and evaluation of the production environment, process control, inspection and testing, raw material/group component management, and the work of the resident supervision team. In 2017, 32 main transformer and combined electrical appliance manufacturers were inspected, and 84 resident supervision teams were stationed, 322 problems were found and dealt with, 114 whole notices were issued, and the manufacturers were urged to rectify in time to ensure the quality of factory equipment. In 2018, the State Grid Materials Company will expand the scope of inspection, including transformer, arrester and other equipment with weak control in the past, and carry out flight inspection of the rectification and implementation of the manufacturing plant with more problems, and strengthen the closed-loop control of quality problems.



The second is to carry out the full performance of 110~220 kV transformers and high-voltage switchgear sampling. Random inspection covers all winning suppliers. Highlight the transformer anti-short circuit ability, switch cabinet arc test detection, at the same time, the transformer anti-short circuit ability