Reasonable selection of the capacity of the distribution transformer should be selected reasonably, and the capacity of the distribution transformer should be selected according to the user's load situation and the statistical capacity.
Reasonably choose the installation location of the power transformer. The installation of the distribution transformer must meet the voltage requirements of the user, and try to avoid installing the distribution transformer in the wilderness, which is vulnerable to lightning and far away from residential areas, which is not convenient for operators. Regular maintenance is inconvenient for staff to manage.
Strengthen the measurement of electrical load During the peak period of electrical load, the measurement of a load of each distribution transformer should be strengthened, and the number of measurements should be increased if necessary. The distribution transformer with an unbalanced three-phase current should be adjusted in time to prevent neutral current If it is too large, it will easily burn the lead wire and cause the user equipment to burn out.
Reasonable configuration of high and low voltage fuse melt of distribution transformer Unreasonable configuration of high and low voltage fuse melt of distribution transformer can easily cause serious overload of the distribution transformer and burn the distribution transformer.
It is not advisable to adjust the tap switch privately. Due to the difference in electrical load between winter and summer, the voltage level is slightly different. In order to meet the voltage demand, some rural electricians adjust the tap switch at will without performing related tests, resulting in the tap switch not being in place, causing The distribution transformer is burnt out due to short-circuit between phases.
To prevent natural disasters and external force damage, install high and low voltage insulation covers for power transformers when necessary, install high and low voltage insulation covers for communities with narrow roads and forest protection areas to prevent the loss of things on the distribution transformers and cause low voltage short circuits to burn the transformers.
Lightning arresters should be installed on both the high and low voltage sides of the distribution transformers. Lightning arresters should be installed for the height and low of the distribution transformers in multiple mine areas. If the quality of the arresters is unqualified or faulty, they are not replaced in time, and the transformer is easily damaged by lightning.
Regularly measure the grounding resistance of distribution transformers. After long-term operation (especially the grounding leads are replaced by aluminum wires), the distribution transformers have severe oxidation and increased grounding resistance. In addition, the buried grounding body is corroded and broken, causing the neutral point potential to shift .
Prone to accidents. The distribution transformer itself has quality problems(Distribution Transformer Connections Method). Due to the remote installation location of the distribution transformer, some construction workers put the untested distribution transformer into operation without authorization, temporarily used electricity, and burned the transformer.
Regularly check the low-voltage lead of the distribution transformer. It is strictly forbidden to use the wire itself as a nose, directly on the low-voltage pile head of the distribution transformer. Regularly check and strengthen the contact between the lead and the pile head of the distribution transformer to prevent the distribution transformer from being burnt out due to looseness. Low-pressure pile head.
To ensure the long-term safe operation of distribution transformers and reduce failures, as an operation manager, you must perform frequent inspections, maintenance, and measurement to find problems in time and deal with them in a timely manner to avoid the expansion of faults and burn of the distribution transformers