What does the "five connections and one test" of State Grid substation specialty mean?

Refers to the general management regulations and anti-accident measures for acceptance, operation and maintenance, testing, evaluation and maintenance.

General Management Regulations for Substation Operation and Maintenance of State Grid Corporation;

Article 1 In order to standardize the operation and maintenance management of State Grid Corporation of China (hereinafter referred to as the Company), improve the operation and maintenance level and ensure the operation and maintenance quality, these Provisions are formulated in accordance with national laws and regulations and relevant regulations of the Company. ?

Article 2 These Provisions stipulate the management of operation and maintenance classes, production preparation, operation procedures management, equipment inspection, switching operation, fault and exception handling, work ticket management, defect management, equipment maintenance, special work, auxiliary facilities management, operation and maintenance analysis, operation and maintenance records and accounts, files, instruments and meters, personnel training, inspection and assessment, etc. ?

Article 3 The operation and maintenance management of substations shall adhere to the principle of "safety first, graded responsibility, lean management, standardized operation and proper operation and maintenance". Safety first means that the substation operation and maintenance work should always put safety first, strictly abide by the national and company's safety laws and regulations, strictly implement the "Regulations on Power Safety Work of State Grid Corporation", and seriously carry out dangerous point analysis and pre-control to prevent personal, power grid and equipment accidents. Classified responsibility refers to the management of substation operation and maintenance according to the principle of graded responsibility, strict implementation of personnel responsibility system at all levels, highlighting key points, grasping key points, and strict control to ensure that all work is in place. Lean management refers to the attitude of improving substation operation and maintenance, paying attention to lean evaluation and going deep into the work site, equipment and management. In the second quarter, constantly find problems, constantly improve and upgrade, and strive for a world-class management level. Standardized operation means that the substation operation and maintenance work should strictly carry out on-site standardized operation and maintenance, refine work steps, quantify key processes, strictly review before work, implement them one by one during work, and trace the responsibilities after work to ensure the quality of work. Operation and maintenance in place means that substation operation and maintenance personnel at all levels should aim at operation and maintenance in place, strictly implement various operation and maintenance procedures, check, operate, maintain, detect and eliminate defects according to regulations, be good equipment owners and keep the equipment in the best condition.

Article 4 These Provisions are applicable to the operation and maintenance of the company's 35kV and above AC substations (except protection, automation, communication and metering). Ac equipment of DC converter station shall be implemented with reference to this regulation.