Blogs

2022-04-25

What are the special inspection items for transformers?

(1) During strong winds, check for any loose debris near the transformer that could be blown away, to prevent it from falling onto live parts, and pay attention to the movement of the leads; (2) On foggy days, check for any flashover or discharge phenomena on the bushings; (3) On snowy days, check for any accumulation of snow or ice between the transformer top cover and the bushing connection, and ensure that the oil level gauge, thermometer, and gas relay are not covered by snow; (4) After thunderstorms, check the operation of the lightning arrester counters on all sides of the transformer, and inspect the bushings for any damage, cracks, or discharge marks. (5) During sudden temperature changes, check for changes in oil level and oil temperature.

2022-04-25

The energy-saving potential of distribution transformers is enormous, and the bottlenecks in promotion urgently need to be broken.

Energy-saving transformers also urgently need to address some issues in their own development. It is necessary to improve the supporting system for efficient distribution transformer construction. Accelerate the formulation and improvement of relevant standards and specifications, standardize the testing and certification institutions for distribution transformers, and establish a life cycle evaluation system for distribution transformers. Carry out demonstrations of efficient distribution transformer manufacturing and application, as well as demonstrations of efficient distribution transformer manufacturing and system applications.

2022-04-25

Understanding the installation and maintenance of box-type substations

In addition to complying with the various regulations required by the power department regarding the installation, acceptance, handover tests, trial operation, operation, and maintenance of box-type substations, the following points should also be noted: When users receive the goods, they should carefully inspect them according to relevant regulations. For products that are not installed immediately, they should be stored in appropriate places according to normal usage conditions. The products should be lifted using specialized lifting equipment from the bottom. The products should be placed horizontally on a pre-prepared foundation, with four anchor bolts installed (the secondary pouring method can be used). Then, seal the gap between the product base and the foundation with a cement-sand paste to prevent rainwater from entering the cable room. Connect high and low voltage cables through the bottom sealing plates of the high and low voltage rooms. Seal and waterproof the gaps between the cables and conduits.

2022-04-25

Intelligentization of power transformers

Intelligent transformation requires the integration of multiple technologies. The intelligence of transformers involves various technologies, mainly including sensor technology, integration technology, online monitoring technology, and information technology. According to the requirements for transformer intelligence, it is necessary to measure various parameters of the transformer, which requires the development of more advanced sensors. At the same time, integration of sensors and transformers is needed, and the intelligent components of various functions must also be integrated under safe and reliable conditions to reduce footprint and project costs. The premise of transformer intelligence is to achieve online monitoring of operating status, so research on online monitoring technology is required to ensure that various state parameters can be stably measured online. In addition, the state monitoring, self-diagnosis, and control of intelligent transformers require processing a large amount of information. Therefore, research on information technology is necessary to ensure that this massive data can be processed according to requirements, achieving transformer intelligence. Transformer intelligence should have the following characteristics: Digital measurement. Relevant parameters of the transformer and its components should be digitally measured on-site, and the measurement results can be sent to the station control layer network or process layer network as needed for the operation and control of the transformer.

2022-04-09

Introduction to the daily inspection work of transformer manufacturers

Those who are familiar should know that the components of a transformer include the body (core, winding, insulation, leads), transformer oil, oil tank and cooling devices, voltage regulation devices, protection devices (such as desiccators, safety ducts, gas relays, oil storage cabinets, and temperature measuring devices), and outgoing bushings. So how does a transformer manufacturer's daily inspection work?

2022-04-09

The role of dry-type transformers in power transmission.

In some power plants and electricity transmission locations, dry-type transformers can be seen. During the process of electricity transmission, they can convert electrical energy into high-voltage current forms, which can reduce energy loss during transmission, playing a significant role in energy conservation. This allows power plants located far from residential areas to transmit electricity effectively.

2022-04-09

Precautions for Transformer Short Circuit

During processing, the performance of the replaced insulating components should be tested, and they can only be used if they meet the requirements. Special attention should be paid to the insulation of the lead support wooden blocks. The wooden blocks should be soaked in transformer oil at around 80°C for a period of time before installation to ensure their insulation.

2022-04-09

The uses and classifications of transformers

Modern industrial enterprises widely use electricity as an energy source, and the electricity generated by power plants often needs to be transmitted over long distances to reach consumption areas. When the transmission power is constant, the higher the transmission voltage, the smaller the required current. This is because the voltage drop is proportional to the current. Line losses are proportional to the square of the current, so using a higher transmission voltage can achieve lower line voltage drop and line loss. It is currently very difficult to manufacture generators that produce very high voltages, so specialized equipment is needed to increase the voltage at the generator end before transmission; this specialized equipment is called a transformer. On the other hand, at the receiving end, a step-down transformer must be used to reduce the high voltage to the voltage of the distribution system, so a series of distribution transformers are required to lower the high voltage to an appropriate level for use.

2022-04-09

Advantages and disadvantages of dry-type transformers and oil-immersed transformers, as well as their differences.

Oil-immersed transformers are generally installed in a separate transformer room or outdoors due to fire prevention needs, while dry-type transformers are definitely installed indoors, typically in low-voltage distribution rooms, installed side by side with low-voltage distribution cabinets.

2022-04-09

The difference between high overload transformers, high power transformers, and ordinary transformers.

First, the advantages of high overload distribution transformers and the types of power grids they are suitable for are introduced. Next, the research basis for high overload distribution transformers, their overload capacity, and high-temperature resistance are explained. Finally, recommendations for selecting high overload distribution transformers are provided. Let's follow along to learn more.