37KV Customized Transformer Substation
Precautions for Fire and Explosion Protection Operation of Box Substation 1. Box type substations cannot operate under long-term overload, especially after a few years of use, attention should be paid to issues such as coil aging and insulation aging to prevent short circuits from occurring. 2. If an oil immersed transformer is installed in a box type substation, it is also necessary to regularly check the insulation performance of transformer oil, and replace the unqualified transformer oil in time. 3. During the operation of prefabricated substations, the operation status of the transformer should be monitored at all times to prevent insulation aging caused by long-term heating of the transformer core. During maintenance, attention should also be paid to not damaging the insulation layer. 4. During daily maintenance of box type substations, attention should be paid to wire contact issues and timely handling of poor contact wires. 5. Lightning arresters are installed on the high-voltage switchgear, transformers, and low-voltage switchgear of prefabricated box substations to prevent lightning damage to related equipment and protect the safe operation of the box substation. 6. During the design phase of the box type substation, it is necessary to consider the ventilation and heat dissipation situation, design sufficient ventilation openings and exhaust fans. The purple light box type substation is equipped with exhaust fans in both the transformer and low-voltage rooms, and the transformer room has an automatic temperature monitoring system that can effectively control the temperature inside the box type substation.
Description
37KV customized transformer substation
Environmental conditions:
Altitude: 1000m and below.
Ambient temperature: - 25 ~ +40 C.
Wind speed: no more than 35m/s.
Arelative humidity: no more than 90% (+25 C).
Seismic horizontal acceleration: no more than 0.4m/s, vertical acceleration: not greater than 0.2m/s.
Place of use: there should be no conductive, dusty, hazardous, corrosive, inflammable and explosive materials harmful to metals and insulators.
The European type substation, is a complete set of new power transformer equipment developed by our company on the basis of transformation of national urban network making the optimal combination for the oil-immersed sealed power transformer and high and low voltage electrical components. Through structure optimization, the switchgear shall be miniaturized to extreme extent which greatly reduce the occupied area of the combined transformer with such advantages as small volume, low noise, reliable power supply, reasonable structure, blexible for installation, easy for operation and capable of going deep into the load center to maximum extent, etc.It can assemble network automation terminal (FTU) in the high-voltage ring network cabinet, realize the reliable detection of short circuit and single-phase grounding fault, and has the function of "four remote", which facilitates the automatic upgrade of network distribution. It is widely used in residential quarters commercial centers stations industrial and mining enterprises airports railroads schools hospitals, high-rise buildings and places.
Features:
1) Smaller occupied area
2) Firm and reliable
3) Easy to move, beautiful and practical
4) Its cost is low, and the installation period is short
Outdoor installation precautions for box type substations
1. The grounding conductor of the box type substation must be copper, and the cross-sectional area must not be less than 30mm2. For some equipment that intentionally reduces the size of the grounding conductor, it is easy to suffer lightning damage to the equipment.
2. The grounding network of the box type substation also needs to ensure sufficient coverage area and depth. The grounding network of the box type substation should preferably be buried 1 m below the ground. In order to reduce the resistance, some vertical Earth electrode should also be added.
3. Box type substations should be installed in areas without strong vibrations and impacts, and there should be no significant electromagnetic induction nearby. The cable entry and exit lines should meet the construction safety distance.
4. The installation of box type substations should be in a dry and ventilated area, installed horizontally, with a slope not exceeding 5 degrees.
5. The installation area of the box type substation shall not have hazardous substances such as explosions, as well as the presence of corrosive gases or liquids.
6. The outdoor use of the box type substation does not require duty, so it occupies a small area and has low operating costs.
Common electrical fault handling measures for box type substations
1. Measures for overheating treatment of box transformers. Overheating of electrical equipment in box type substations for a long time can easily lead to insulation aging, which in turn leads to loose joints. Internal short circuits in box substations can also cause temperature increases and even trigger fires. The transformer winding is also prone to heating during operation, and continuous heating can easily damage the transformer. In response to the problem of overheating in box type substations, it is necessary to promptly clean up residual substances such as dust inside the substation. Secondly, it is necessary to strengthen temperature monitoring of various equipment inside the box transformer and issue timely high-temperature warning signals.
2. The load switch of the box transformer is faulty. In box type substations, load switches rarely fail due to their own faults. The main reasons for the failure of the on load switch are as follows: firstly, the switch has been used for a long time, causing deformation of the switch frame, resulting in the switch becoming loose and falling off; Secondly, the strength of the components is not satisfactory, resulting in damage to the tap changer during switching operations; The third reason is that the quality of the switch is not up to standard, and after using it for a period of time, there are situations such as spindle breakage. To ensure the stable operation of the box transformer, the production process requires strict selection of on-load switches, ensuring the quality of the switches and the installation process.
3. The low-voltage switch of the box transformer has tripped and failed. There are two main reasons for the tripping of the low-voltage switch in the box transformer, one of which is a busbar fault; The second is switch misoperation, etc. In case of low-voltage switch tripping fault, it is necessary to carefully inspect the box transformer. Once overcurrent protection occurs on the low-voltage side of the main transformer, relevant equipment needs to be immediately inspected and protected reasonably. At the same time, eliminate the malfunction of switch misoperation, focusing on whether it is a busbar fault or a line fault. Further inspect the relevant equipment to see if there is any leakage in the protective pressure plate of the equipment being used. If necessary, use professional equipment for inspection.
This product is usually customized.
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