日本語
ไทย
Gaeilgenah Éireann
اردو
bosanski
فارسی
dansk
Nederlands
slovenčina
slovenščina
Melayu
Why Choose Us
Our Factory
Our factory is able to produce transformers that comply with various international standards such as IEC, IEEE, ANSI, CSA, EN, etc.
Product Application
State Grid, transportation, urban construction, petrochemical industry and other places.
Our Service
24 Hours online service
Mission
Our mission is to put people first, strive for development through technology, compete for the market through quality, and create benefits through brand.
Professional Team
The Yawei team is composed of experts and professional knowledge, helping us quickly solve customer problems.
Global Business
So far, our equipment has been exported to multiple regions such as South America, North America, Asia, Australia, Europe, and Africa.
Related Product
Substations are located within a power system and allow voltage to be stepped up or down, depending on whether it's traveling to consumers or other stations. Substations are either transmission or distribution substations. Transmission substations step up the voltage to enter the grid, while distribution substations lower the voltage for consumer use. Prefabricated substations function as distribution substations but can also set up voltages when needed.
▪ Manufacturing range : Upto 20 MVA
▪ Voltage range : Upto 33 kV
▪ Cooling method : Oil Natural Air Natural (ONAN)
A compact substation is a self-contained unit that houses the essential components of a traditional substation in a smaller space. They are designed to reduce the need for field assembly, save on space, and lower handling costs.
Components of a Compact Substation
Incoming High-Voltage Section: This section is responsible for receiving high-voltage power from the transmission grid. It includes a high-voltage circuit breaker, disconnect switches, and lightning arrestors. The circuit breaker serves as a protective device that can interrupt the flow of current during fault conditions, while disconnect switches enable safe isolation of the substation during maintenance or emergencies.
Power Transformers: Power transformers are one of the key components in a compact substation. They step down the high-voltage electricity received from the grid to lower voltage levels suitable for distribution. The transformer comprises primary and secondary windings, and the ratio between the number of turns in these windings determines the voltage transformation.
Low-Voltage Section: This section of the compact substation includes low-voltage switchgear, which distributes the electricity to various feeders and consumers. It comprises low-voltage circuit breakers, fuses, and other protection devices to safeguard the distribution network from overloads and short circuits.
LV and HV Busbars: Busbars are conductive bars or rails that carry electrical current within the substation. Low-voltage (LV) busbars distribute power at lower voltage levels within the substation, while high-voltage (HV) busbars handle the incoming high-voltage power and distribute it to the transformers.
Control and Protection System: The control and protection system is the brain of the compact substation. It consists of various relays, sensors, and monitoring devices that continuously supervise the substation's health and performance. The system detects faults, abnormal conditions, and operates the necessary protective devices to ensure the safety and reliability of the substation.
With the great advantages of compact size, flexible combination and reliable technology, compact substation is widely used in the three-phase power distribution system with the voltage rating from 11kV to 33kV for electricity power distributing. The protection degree reached IP55 so that it could be installed outdoor by occupying the small area.
The power capacity for the prefabricated compact substation is normally designed below 2500kva. It depends on the capacity of the distribution transformer.
Compact substation has compact construction, which is easy to access to its components with simple interface. Due to its small size, it requires little footprint. It decreases installation space, costs and time. Compact substations can ensure maximum safety of operator by little site work. It has maximum mobility for transportation and relocation.
1. The internal structure of the compact substation is more reasonable, so the space occupied is small. Compared with the traditional transformer, compact substation by scientific and reasonable means of high voltage distribution equipment installed in a sealed steel box, its internal structure is very compact, the gap between each component is quite small, so the space occupied by compact substation is relatively small.
2. Compact substation operation method is very simple, convenient, convenient for rapid assembly. Specialized designers through the understanding of power engineering construction requirements, according to different requirements to make simple and convenient operation of separate main wiring and supporting equipment outside the box, convenient for rapid assembly.
3. The application of compact substation is high. From the point of view of creation cost, we can clearly see that the creation cost of compact substation is often between 300,000 and 500,000. From the point of view of operation cost, it can be seen that even under the full load operation state, the compact substation consumes about 1 million kilowatts less than the ordinary transformer every year, and the maintenance cost is less even if there is a problem. Therefore, compact substation has higher application income.
4. Compact substation combination is flexible. Because the compact substation has the characteristics of compact structure, simple, so each part is an independent system. In this way, the compact substation has quite strong flexibility in combination mode.
5. Compact substation has high safety and stability. Because the compact substation shell is made of metal with strong anticorrosion ability, all the interfaces between the internal equipment are also used as insulation materials, and it is also equipped with air conditioning and moisture removal equipment, so it greatly improves the resistance of the compact substation to the external environment, and improves the safety and reliability of its operation.
Operation And Maintenance Of Compact Substation
Ⅰ. Basic requirements for compact substation operation
1. The floor of compact substation equipment should be placed in a higher place, not in a low-lying place, so as not to affect the operation of rainwater into the box. Empty gear should be left when pouring concrete platform. It is convenient for cable in and out laying.
2. There must be two reliable connections between the box body and the grounding net. The grounding net and the grounding net can be connected together. The grounding net is generally grounded at the four corners of the foundation and then connected as a whole.
3. There should be no illegal piling around the box equipment to ensure the ventilation and inspection of the electrical equipment. The box should be cooled mainly by natural air circulation and the transformer room door should not be blocked.
4. The equipments in the high voltage distribution device should be inspected and maintained regularly which includes the ring main switch, transformer and lightning arrester. The defect should be repaired in time, and the insulation preventive test face should be carried out regularly. The mechanical linkage should be properly broken and operated with insulating rods.
Ⅱ. Inspection and maintenance of the transformer shall make periodic inspection according to the inspection and maintenance cycle (not less than once a month), test the temperature at the connection of the cable terminal head, check the operation condition of the equipment, and test it if necessary.
The space occupied is small. Compared with the traditional transformer, the box type transformer installs the high voltage distribution equipment into a sealed steel structure box by scientific and reasonable means. Its internal structure is very compact, and the gap between each component is quite small. Therefore, the space occupied by box transformer is relatively small.
The operation method is very simple, convenient and convenient for quick assembly. Through understanding the construction requirements of power engineering, special designers can make simple and convenient operation of the main wiring and supporting equipment outside the box according to different requirements, so as to facilitate the rapid assembly.
High application income. From the perspective of the cost of creation, we can clearly see that the cost of box transformer is usually between 300000 and 500000. From the operating cost, it can be seen that even under the full load operation state, the box type transformer consumes about 1 million degrees less electricity than the ordinary transformer every year, even if there is a problem, the maintenance cost is less. Therefore, the box transformer has a high application income.
Flexible combination. Because of the characteristics of compact and simple structure, each single transformer is an independent system, which makes the box transformer have a strong flexibility in combination.
The operation is safe and stable. Because the case of box type transformer adopts metal conductor with strong anti-corrosion ability, and the interface between internal equipment and equipment is also insulation material. Air conditioning and moisture removal equipment are set in the box, which greatly improves the resistance of box transformer to the external environment and improves the safety and reliability of its operation.
How To Maintenance The Compact Substation?
1. The foundation is trapped, the hole is blocked, the cabinet has no moisture.
2. Grounding device is complete, good connection. Check whether the grounding resistance meets requirements.
3. There is no change in the outdoor environment. Whether impact traffic and pedestrian safety.
4. Check the load of each feeder. Three-phase load balance or overload phenomenon, switch open and close position, instrument indication is correct, control device is working normally.
5. The inside of the transformer is dedusted every other year. The surface of the cabinet body of the high pressure chamber and low pressure chamber and the surface of the air box can be wiped with wet cloth. The transformer inside is dedusted with air or vacuum cleaner.
6. Daily maintenance and overhaul of the fan check the operation of the fan. If the fan is not running, use the temperature and humidity controller to adjust the temperature below the existing temperature and start the fan to check.
7. Maintenance and overhaul of high voltage switch and low voltage switch electric operating mechanism.
8. Auxiliary routine test of temperature and humidity controller routine test; Routine test of smoke alarm device; Fastening and inspection of terminal block: fastening and inspection of standard parts.
9. Terminal block maintenance, due to thermal expansion and contraction, the terminal block may loose, annual inspection should be all terminals in the terminal room retighten. Note: Before refastening, please confirm that the primary AC loop and secondary control loop are powered off to avoid electric shock!
Certifications
Our Factory
Through years of international engineering experience, our factory is able to produce transformers that comply with various international standards such as IEC, IEEE, ANSI, CSA, EN, etc. From product development, design, production to manufacturing and testing, the Yawei team strictly controls every process. So far, our equipment has been exported to multiple regions such as South America, North America, Asia, Australia, Europe, and Africa. Since 1992, Yawei Transformer has completed multiple overseas projects. We are confident in winning any project, which will help our potential customers become more competitive in the global market. For Yawei, our mission is to put people first, strive for development through technology, compete for the market through quality, and create benefits through brand. We focus on continuous improvement and strive for the green development of electrical equipment. The Yawei team is composed of experts and professional knowledge, helping us quickly solve customer problems. Whether selecting the current product from our catalog or seeking engineering assistance for your application, please contact our customer service center to discuss your procurement requirements.
FAQ
Hot Tags: compact substation, China compact substation manufacturers, suppliers, factory, Combined transformer substation, , dry cast resin transformers, Compact Substation, Box Type Substation, Prefabricated Substation
