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Compact Substation Transformer

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Jiangsu Yawei Electric Power Engineering Co.,Ltd.

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A compact substation transformer is a type of transformer specifically designed for use in compact substations. These transformers are an integral part of the compact substation's design, providing efficient electrical power transformation while fitting into a smaller, more manageable footprint.

Space-Efficient Design: These transformers are designed to be smaller and more compact compared to standard transformers, making them ideal for use in areas where space is limited, such as urban environments, industrial complexes, or inside buildings.

Integrated Functionality: In a compact substation, the transformer is integrated with other essential substation components, such as switchgear and distribution panels. This integration allows for a streamlined setup that is easier to install and maintain.

Range of Capacities: Compact substation transformers are available in various sizes and capacities, catering to different power requirements. They are often custom-designed to meet specific operational needs.

Cooling Systems: Depending on their size and power rating, these transformers can be equipped with different cooling systems. Smaller units might use natural air cooling, while larger ones might require forced air or liquid cooling systems.

Safety and Reliability: Safety is a paramount concern in the design of compact substation transformers. They often include features like robust insulation, secure enclosures, and protective devices to ensure safe operation.

Environmental Considerations: Many compact substations are designed with environmental considerations in mind. For instance, the use of dry-type transformers in these substations is common as they do not pose a risk of oil leakage.

Low Maintenance: The design and construction of compact substation transformers aim to minimize maintenance requirements. Their compact and integrated nature often allows for easier access and simpler maintenance procedures.

Durability: Constructed to withstand harsh operational environments, these transformers are made with durable materials and are designed to have a long service life under varying conditions.

Applications: Compact substation transformers are used in a variety of settings, including residential areas, commercial buildings, industrial sites, and in locations where traditional substations are not feasible due to space constraints.

Energy Efficiency: These transformers are typically designed for high efficiency, minimizing energy losses and ensuring cost-effective operation.

Compact substation transformers are an essential component in modern electrical distribution networks, particularly in areas where space is limited. Their compact size, combined with high efficiency and reliability, makes them an ideal choice for urban and industrial power distribution needs.

Quality standards of product

1.Quality management system GB/T 19001-2016 ISO 9001: 2015

The operation of the whole YAWEI system is strictly controlled and managed. This ensures the quality of products and material in all stages, from receiving customer requests to design, materials, production, installation, testing, packaging, delivery, after-sales, all of which operate under strict and logically linked processes.

2.CERTIFICATEOFCOMPLIANCE of UL and CUL

YaWei pad mounted transformer have been evaluated by UL in accordance with the U.S and Canada Standard(s). Our transformer certified by UL based on Canadian standards (CSA standards) .

3.Accreditation certificate CE

Standard: EN 60076-1:2011.EN 60076-2:2011EN 60076-14:2013 confirms that YAWEI technical quality meets the requirements of all specific international standards for testing and calibration laboratories. All YAWEI products are fully tested in a qualified testing room before leaving the factory, ensuring stable quality and providing absolute peace of mind for customers.

Characteristics of Yawei power transformer

Cover complete production line of transformer from winding wire, silicon sheet slitting and rolling, transformer oil tank producing and power transformer R&D,testing, installation and production.

Yawei automatic insulation wire wrapping line.Yawei has automatic, horizontal, vertical and manual winding lines comes up to different capacity request.

Winding on the primary and secondary windings has an excellent design structure to help the machine operate effectively.

Insulation wire wrapping line

Yawei transformer oil tank casting workshop. Professional work and team for different mold requirements.

Yawei configuration fin/ radiator producing workshop.

Yawei transformer front cabinet workshop

Main Products Of YAWEI

FAQ

Q: 1.Do all substations have transformers?

A: Not all electrical substations have transformers. The presence of transformers in a substation depends on the substation's function and the requirements of the electrical distribution network it serves. Here are the different types of substations and their typical equipment: Transmission Substations: These substations connect two or more transmission lines. They often have transformers to step up (increase) or step down (decrease) voltage levels between different transmission lines. For example, a substation might step down the high voltage from a transmission line for distribution in a residential area. Distribution Substations: These substations are where the voltage is stepped down from the transmission level to the distribution level. They typically have transformers to reduce the voltage to levels suitable for residential or commercial use. Switching Substations: These substations primarily contain switches and do not typically have transformers. Their main function is to switch circuits in and out of the electrical grid for maintenance or to reroute power. Converter Substations: Used in areas with HVDC (High Voltage Direct Current) transmission systems, converter substations convert AC (Alternating Current) to DC (Direct Current), or vice versa. While they contain converters and related equipment, they may not necessarily have transformers, depending on the specific design and purpose of the substation. Collector Substations: Often used in renewable energy setups like wind farms, these substations collect power from multiple generators and may include transformers to step up voltage for transmission. The need for transformers in a substation is dictated by its role in the overall power distribution network.

Q: 2.What are the two types of substations?

A: Electrical substations can be broadly categorized into two primary types based on their functions in the power distribution network: Transmission Substations and Distribution Substations. Transmission Substations: Purpose: These substations are part of the high-voltage transmission system. They connect transmission lines to each other, allowing for the transfer of electricity between different areas and the regulation of power flow across the network. Features: Transmission substations often contain large transformers to step up (increase) or step down (decrease) voltage levels. The higher voltages are used for long-distance transmission to reduce energy loss. Components: They typically include switchgear, transformers, and other equipment needed to control and protect the high-voltage transmission system. Distribution Substations: Purpose: Distribution substations are the link between the transmission system and the local distribution networks that deliver electricity to homes and businesses. Features: These substations typically have transformers that step down the voltage from transmission levels to lower voltages suitable for distribution. The lower voltage electricity is then distributed through a network of lines to customers. Components: Along with transformers, distribution substations include various types of switchgear, protection devices, and sometimes capacitor banks for voltage support and power factor correction. In addition to these two main types, there are other specialized substations such as: Switching Substations: Primarily contain switches and do not have transformers. Their main role is to switch circuits in and out of the grid for maintenance or operational reasons. Converter Substations: Used in HVDC (High Voltage Direct Current) systems, converting AC (Alternating Current) to DC and vice versa. Collector Substations: Often found in renewable energy installations (like wind farms), collecting power from multiple generators and stepping up the voltage for transmission. Each type of substation plays a specific and crucial role in the efficient and reliable delivery of electricity from generation sources to end consumers.

Q: 3.How many transformers in a substation?

A: The number of transformers in a substation can vary widely depending on the substation's purpose, size, and the requirements of the electrical grid it serves. There's no standard number of transformers for all substations; it's determined by specific operational needs. Here are a few scenarios that influence the number of transformers: Size and Capacity of the Substation: Larger substations that handle more power or serve larger areas may have multiple transformers to distribute the load effectively. In contrast, smaller substations might only have one transformer. Redundancy and Reliability Requirements: Some substations have multiple transformers for redundancy. This means if one transformer needs maintenance or fails, others can continue to operate, ensuring uninterrupted power supply. Type of Substation: Transmission Substations: These might have one or more large transformers for stepping up or stepping down voltage levels between different transmission lines. Distribution Substations: Typically have at least one transformer to step down voltage for local distribution, but larger distribution substations may have several. Load Distribution: In areas with high power demand, multiple transformers can be used to share the load and maintain a stable power supply. Specialized Substations: Certain specialized substations, like those used for industrial applications or renewable energy generation, might have a specific number of transformers tailored to their unique requirements. Expansion and Future-Proofing: Some substations are built with additional space for extra transformers to accommodate future load growth or network expansion. The exact number of transformers is usually determined during the design and planning phase of a substation, based on a thorough analysis of the expected electrical load, redundancy needs, expansion plans, and overall network design. For details please feel free to contact us

Q: 4.Which is the cheapest form of substation?

A: The cost of a substation can vary significantly depending on factors such as its size, capacity, location, and the specific electrical requirements it needs to fulfill. However, in general, the simplest and thus often the cheapest form of substation is a basic distribution substation with minimal features. A basic distribution substation typically involves: Lower Capacity Transformers: These substations usually have transformers to step down the voltage from higher transmission levels to lower distribution levels. Smaller, lower capacity transformers are less expensive than the larger units used in major transmission substations. Simpler Construction: They usually have a simpler design and construction, without the need for the extensive switchgear, control equipment, and redundancy found in larger transmission substations. Less Land and Infrastructure Requirements: Due to their smaller size and simpler operation, these substations often require less land and infrastructure, which can significantly reduce costs. Outdoor Design without Enclosures: Many basic distribution substations are designed as outdoor installations without extensive building or enclosure requirements, which further reduces costs. Minimal Advanced Technology: They typically do not require the advanced technology and automation found in larger or more specialized substations, which can also help keep costs down. It's important to note that while such substations may be cheaper, their capabilities are also more limited. They are generally suitable for basic power distribution needs in residential or light commercial areas and might not be appropriate for areas with high power demands or specialized industrial requirements. The cheapest option for a particular situation also depends on the specific needs and constraints of the electrical grid in that area. Therefore, cost-effectiveness should be evaluated in terms of both the initial investment and the long-term operational and maintenance needs.

Q: 5.What is a 3 phase transformer used in substation?

A: A 3-phase transformer in a substation is a critical component used to step up or step down voltage in three-phase power systems, which are the most common method of power transmission and distribution in the world. This type of transformer is designed to handle three-phase electric power, a standard method of alternating current electric power generation, transmission, and distribution. Here are key aspects of 3-phase transformers used in substations: Voltage Transformation: In substations, 3-phase transformers are used to increase (step up) or decrease (step down) the voltage levels of the electricity being transmitted. For example, in a generating station, the voltage may be stepped up for efficient long-distance transmission. Conversely, at a distribution substation, the voltage is stepped down to levels suitable for commercial or residential use. Efficiency: 3-phase transformers are more efficient than single-phase transformers for large power distribution needs. They can handle higher power loads with less material, making them more cost-effective and efficient for industrial and commercial power distribution. Construction: These transformers can be constructed in different ways - either as three separate single-phase transformers connected together or as a single unit with three primary windings and three secondary windings on a shared core. Balanced Load: They provide a balanced load, which is important for the stable operation of power systems. This balance ensures that the power distribution is equal across all three phases, reducing the chances of overloading one phase. Applications in Substations: In substations, these transformers play a pivotal role in adjusting the voltage levels between the transmission grid and the distribution networks. They are a crucial component in ensuring that electricity is delivered at usable voltages to homes, businesses, and industries. Types of Connections: 3-phase transformers can be connected in various configurations, such as Delta-Delta, Wye-Wye, Delta-Wye, and Wye-Delta, each with its specific applications and characteristics. The use of 3-phase transformers in substations is fundamental to the efficient and reliable operation of the electrical grid, facilitating the transfer of electricity across vast distances and through different voltage levels, from generation to end-users.

Q: 6.What are the 3 types of transformers?

A: Transformers are essential electrical devices used for voltage transformation in various applications. There are primarily three types of transformers based on their purpose and usage: Power Transformers: Purpose: Power transformers are designed for the transmission and distribution of electrical power. They play a crucial role in the electrical grid, stepping up (increasing) or stepping down (decreasing) voltage levels to enable efficient power transmission over long distances and safe distribution to end-users. Applications: Power transformers are used in electrical substations, power plants, and utility networks to transfer electricity between different voltage levels. They are vital for maintaining grid stability and reliability. Distribution Transformers: Purpose: Distribution transformers are a subset of power transformers designed specifically for the distribution of electricity to consumers. They operate at lower voltage levels than power transformers and are used to further reduce voltage levels for safe use in homes, businesses, and industries. Applications: Distribution transformers are commonly found on utility poles, in underground vaults, and in distribution substations. They provide the final step-down transformation of voltage before electricity is delivered to consumers. Instrument Transformers: Purpose: Instrument transformers are used for the measurement and protection of electrical circuits. They do not directly transfer electrical power but are crucial for accurate metering and protective relaying. Types: Current Transformers (CTs): These transformers measure current in a circuit and provide a reduced current output proportional to the current in the circuit. They are widely used for current measurement in meters and protection devices. Voltage Transformers (VTs) or Potential Transformers (PTs): VTs are used to measure voltage in a circuit. They provide a reduced voltage output proportional to the voltage in the circuit. VTs are essential for accurate voltage measurement and protection. Each of these transformer types serves a specific purpose within the electrical infrastructure, from transmitting power across long distances to safely delivering electricity to homes and ensuring accurate measurement and protection of electrical systems.

Q: 7.What are the advantages of compact substation?

Q: 8.What are the types of compact substation?

A: Compact substations are designed to be self-contained, compact, and easy to install, making them suitable for various applications where space and mobility are limited. There are several types of compact substations, each designed for specific purposes and environments. Here are some common types: Pad-Mounted Compact Substation: Purpose: These compact substations are designed to be installed on the ground or pad-mounted, making them suitable for outdoor applications in urban areas where space is limited. Applications: Pad-mounted compact substations are often used in residential and commercial areas to supply electricity to neighborhoods or industrial facilities. They are designed to be aesthetically pleasing and blend into urban environments. Kiosk-Type Compact Substation: Purpose: Kiosk-type compact substations are designed for outdoor use and are enclosed within a small, weatherproof kiosk or enclosure. Applications: They are commonly used in remote or exposed locations, such as rural areas, construction sites, or for temporary power supply needs. The enclosure provides protection against harsh weather conditions. Mobile Compact Substation: Purpose: Mobile compact substations are designed to be transported and installed quickly. They are often mounted on trailers or skids for easy mobility. Applications: Mobile substations are used for temporary power supply needs during events, emergencies, or construction projects. They can be transported to different locations as needed. Underground Compact Substation: Purpose: These compact substations are designed for installation underground to save above-ground space and reduce visual impact. Applications: Underground substations are commonly used in urban areas where space is limited and aesthetics are a concern. They are often found in city centers and residential neighborhoods. Containerized Compact Substation: Purpose: Containerized substations are built within standard shipping containers, providing a compact and transportable solution. Applications: They are used in various industries and remote locations where a self-contained, portable substation is needed. Containerized substations can be easily transported by truck, rail, or ship. Mining Substations: Purpose: These compact substations are designed specifically for use in mining environments, where ruggedness and durability are essential. Applications: Mining substations are used in underground and surface mining operations to provide power to equipment and lighting. They are built to withstand harsh conditions, including dust, moisture, and vibration. Specialized Compact Substations: Purpose: Specialized compact substations are designed for unique applications, such as railway electrification, renewable energy integration, and industrial processes. Applications: These substations are tailored to the specific requirements of the application, whether it's providing power to a remote railway station or integrating solar or wind energy into the grid. The choice of compact substation type depends on factors such as the application, available space, mobility requirements, and environmental conditions. Each type is designed to meet specific needs while offering the advantages of compactness and ease of installation.

Q: 9.Why do small transformers fail?

A: Small transformers, like any electrical equipment, can experience failures due to various factors. While they are typically more robust than larger transformers, they are not immune to issues. Here are some common reasons why small transformers may fail: Overloading: Operating a small transformer beyond its rated capacity can lead to overheating and insulation breakdown. This often occurs when there is an unexpected increase in electrical load. Aging: Over time, all transformers, including small ones, undergo aging due to factors like thermal stress and electrical stress. As they age, their insulation and components can deteriorate, increasing the risk of failure. Insulation Breakdown: The insulation materials inside a transformer can break down due to excessive heat, electrical stress, or contaminants. Insulation breakdown can result in short circuits or faults. Moisture Ingress: Small transformers, especially those located outdoors or in humid environments, can experience moisture ingress. Moisture can degrade insulation and cause electrical faults. Contaminants: Dust, dirt, and other contaminants can accumulate on the transformer's components, leading to overheating and reduced performance. Voltage Surges: Voltage surges, such as lightning strikes or switching transients, can cause insulation breakdown and damage to small transformers. Poor Maintenance: Inadequate or infrequent maintenance can contribute to transformer failures. Regular inspections, oil testing (if applicable), and cleaning are essential for ensuring transformer health. Manufacturing Defects: Occasionally, transformers may have manufacturing defects that become apparent over time. These defects can include issues with winding connections, core construction, or insulation materials. Improper Installation: Incorrect installation, such as incorrect phasing or poor electrical connections, can lead to transformer stress and failures. Environmental Factors: Harsh environmental conditions, such as extreme temperatures or exposure to corrosive substances, can accelerate transformer aging and failure. Short Circuits: Short circuits within or outside the transformer can cause excessive currents and mechanical stress, leading to damage or failure. Lack of Protection: Inadequate or malfunctioning protection devices, such as circuit breakers or fuses, may fail to respond to faults, allowing damage to escalate. Voltage Regulation Issues: Small transformers are responsible for voltage regulation. If they cannot maintain stable output voltage, it can affect connected equipment and lead to failures. To mitigate the risk of small transformer failures, regular maintenance, including visual inspections, testing, and cleaning, is crucial. Additionally, proper protection devices, surge suppressors, and monitoring systems can help prevent and detect issues early, minimizing downtime and damage.

Q: 10.Which transformer is smallest in size?

A: The smallest type of transformer in terms of physical size is typically a low-voltage or miniature transformer. These transformers are designed for specific applications where space is limited, and they are characterized by their compact dimensions. Some common types of small transformers include: Low-Voltage Transformers: These transformers are commonly used in various electronic devices and appliances to step down voltage for safe operation. They are small, lightweight, and designed to fit within the limited space available in consumer electronics. Signal Transformers: Signal transformers are used in electronic circuits to isolate and match signal levels. They are often very small and designed to be integrated onto printed circuit boards (PCBs) in electronic devices. Instrument Transformers: While instrument transformers can vary in size, some specialized types, such as current transformers (CTs) and voltage transformers (VTs) used for metering and protection in electrical systems, can be relatively small. Audio Transformers: Audio transformers used in audio equipment, such as amplifiers and mixers, are often compact and designed to fit within the confined spaces of audio equipment. Ferrite Transformers: Ferrite-core transformers are used in high-frequency applications and are typically smaller in size compared to transformers with iron cores. Miniature Transformers: These are custom-designed small transformers used in specific applications where space constraints are critical. They can be found in various electronic and industrial equipment. The size of a transformer is determined by its power rating, voltage levels, and the design specifications for a particular application. Transformers can vary widely in size, from tiny components integrated into electronic circuits to large power transformers used in substations. The choice of transformer size depends on the electrical requirements of the application and the available space.

Q: 11.Why are there small transformers?

A: Small transformers serve specific purposes and are designed to meet the electrical needs of various applications where space, weight, and other considerations are critical. There are several reasons why small transformers are essential and widely used: Space Constraints: In many applications, there is limited physical space available for electrical components. Small transformers are designed to fit within tight spaces, making them suitable for compact electronic devices and equipment. Weight Limitations: Some applications, such as aerospace and automotive industries, have strict weight limitations. Small transformers are lightweight and can be integrated into lightweight structures without compromising the overall weight of the system. Efficiency: Small transformers are often designed for specific loads and voltage requirements. This specialization can lead to higher efficiency compared to larger transformers that may be oversized for the application. Portability: Portable and handheld devices require transformers that are small and lightweight. Small transformers are essential for battery-operated devices where power efficiency and portability are critical. Noise Considerations: Transformers generate noise due to magnetostriction and vibration. Smaller transformers tend to produce less noise, making them suitable for applications where noise pollution is a concern. Energy Efficiency: In many electronic devices and appliances, energy efficiency is a priority. Small transformers can be designed with high-efficiency cores and winding materials to minimize energy loss. Customization: Small transformers can be custom-designed for specific applications, ensuring that they meet the exact electrical requirements of the device or equipment. Electromagnetic Compatibility (EMC): Small transformers can be designed to meet EMC requirements, reducing the potential for electromagnetic interference (EMI) with other electronic components. Rapid Response: Small transformers can respond quickly to changes in load conditions, making them suitable for applications where rapid voltage regulation is needed. Examples of applications where small transformers are commonly used include: Consumer electronics (e.g., mobile phones, laptops, televisions). Automotive electronics (e.g., power supplies, ignition systems). Aerospace and aviation (e.g., avionics, navigation systems). Medical devices (e.g., MRI machines, medical imaging equipment). Industrial control systems (e.g., PLCs, robotics). Telecommunications equipment (e.g., routers, switches). Renewable energy systems (e.g., solar inverters). Audio equipment (e.g., amplifiers, mixers). In summary, small transformers play a crucial role in a wide range of applications where size, weight, efficiency, and other specific requirements are essential. Their compact design and customization options make them valuable components in modern electronic and electrical systems. For detail inquiry feel free to contact YAWEI transformer

Q: 12.How long does a small transformer last?

A: The lifespan of a small transformer can vary significantly based on several factors such as its design, quality of construction, operating conditions, and maintenance practices. Generally, transformers can last between 20 to 40 years or more. Small transformers might have a somewhat shorter lifespan due to less robust construction compared to larger, industrial-grade transformers. However, with proper use and maintenance, even small transformers can achieve a long service life. Key factors that affect the lifespan of a small transformer include: Quality of Materials and Construction: Higher quality materials and construction typically lead to a longer lifespan. Operating Conditions: If a transformer is operated within its designed capacity and environmental conditions, it will likely last longer. Load Management: Consistently operating a transformer at or near its maximum capacity can shorten its life. Environmental Factors: Exposure to harsh environmental conditions like extreme temperatures, humidity, or corrosive atmospheres can reduce a transformer's lifespan. Maintenance: Regular maintenance, such as checking for and repairing any physical damage, ensuring proper cooling, and replacing aging components, can significantly extend a transformer's life. For a specific small transformer, it's best to consult the manufacturer's documentation or contact them directly for more precise lifespan estimates based on the model and usage conditions.

Q: 13.What are the two types of transformers called?

A: Transformers are generally categorized into two main types based on their function: Step-Up Transformers: These transformers increase the voltage from the primary to the secondary winding. They are used in applications where the voltage needs to be raised before transmission or distribution. For example, in power plants, step-up transformers are used to increase the voltage generated by the power plant so that electricity can be transmitted over long distances with minimal loss. Step-Down Transformers: These transformers decrease the voltage from the primary to the secondary winding. They are commonly used in distribution networks to lower the high transmission voltages to safer levels suitable for home or business use. For instance, the transformers you see on utility poles are typically step-down transformers, reducing the high transmission voltages to levels suitable for consumer use. Both types of transformers operate on the same basic principle of electromagnetic induction but are designed for specific roles in the electrical power distribution system.

Q: 14.What is the difference between a CT and a transformer?

A: A Current Transformer (CT) and a standard transformer both operate on the principle of electromagnetic induction, but they are designed for different purposes and have distinct characteristics: Purpose: Current Transformer (CT): A CT is designed to produce a reduced current accurately proportional to the current in its primary circuit. Its primary purpose is for monitoring and metering, and it is often used for protective relaying in electrical power systems. CTs allow for the safe measurement of high currents, as they convert these currents to a smaller, manageable value. Standard Transformer: A standard transformer's primary function is to step up or step down voltage levels in power transmission and distribution. They are not designed for current measurement but rather for efficiently transferring electrical energy between two or more circuits. Construction and Design: CT: Current transformers typically have a primary winding of one or more turns of heavy wire or a bar, and a secondary winding of many turns of fine wire, designed for a specific current ratio. The core is designed to support accurate measurement. Standard Transformer: These have both primary and secondary windings with different numbers of turns, depending on their voltage transformation ratio. The design focuses on efficient power transfer. Operating Principle: CT: Operates under the principle of proportional current transformation, maintaining a constant current ratio between the high current in the primary circuit and the lower current in the secondary circuit. Standard Transformer: Operates based on voltage transformation. The voltage ratio between the primary and secondary is determined by the turns ratio of the windings. Safety and Accuracy: CT: Extremely safe for measuring high currents because the secondary circuit provides a much lower current. They are designed to provide accurate current measurements for both metering and protection. Standard Transformer: Focuses on efficient power transfer and voltage level adjustments, not on measurement accuracy. In summary, while both CTs and standard transformers use electromagnetic induction, CTs are specialized for current measurement and safety in high-current environments, whereas standard transformers are used primarily for voltage transformation in power distribution.

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