Rectification and prevention of common electrical installation problems in substation
Feb 14, 2022
In view of the common quality problems in substation construction, the following rectification and prevention suggestions are proposed:
(1) Start from the source, strictly control the quality acceptance of entering equipment, and strengthen the design depth and review of design drawings. Strictly check and accept the equipment such as construction support and screen cabinet, and find out the existing problems in advance and eliminate them in time. The specific allowable value must be specified in the order agreement for the technical problem of the equipment. In order to reduce the acceptance of the standard is not unified controversy: strengthen the design depth of design drawings, reduce design changes, strengthen the cooperation between design professionals, in order to prevent omission and standardize the grounding of a second equipment.
(2) Strengthen the process control, improve the quality consciousness of construction personnel, make them more familiar with the provisions of the electrical specification requirements, strengthen the understanding of digestion. In the construction process, strict implementation of regulations and specifications, strictly according to the design drawings construction; In the construction process, the implementation of technical innovation.
(3) Design and manufacturers should attach great importance to the isolation problem on the terminal block, in the product design must implement the isolation of AC and DC terminals, positive and negative power terminals, different control loops, etc., from the source to control the occurrence of such problems. In the process of construction and acceptance should be timely found not isolated phenomenon, conditions as far as possible to use empty end for isolation, no empty end can be used to increase the insulation partition for isolation.
(4) Improve cable laying, arrangement and secondary wiring work, carry out technical competition, strengthen the responsibility assessment system, and fully mobilize the enthusiasm of construction personnel for careful construction and active innovation. Cable labels, bundling and cable blocking must be strictly controlled by procedures and checked one by one according to the list to effectively avoid omissions and errors.
(5) To strengthen the fineness of equipment installation and adjustment, careful debugging.
(6) Strengthen the supervision function of on-site supervision units. The quality behavior of construction units shall be restrained and the construction quality shall be standardized through on-site supervision, patrol, spot check and quality report by the supervision units.
(7) Strengthen the three-level acceptance system within the construction unit to timely discover and eliminate defects. The implementation of the pre-acceptance of the completion of the project does indeed do layers of checks, eliminate the project quality problems before the project is put into operation, and lay a solid foundation for the safe and reliable operation of the substation.
With the continuous increase of substation construction, in the substation construction, as the supervision unit, should put forward rectification measures in time for the problems in the electrical installation process, and constantly strengthen supervision, so as to ensure the quality of the project.
