Power transformers are essential components for the transmission and distribution of electrical energy. However, these devices are prone to several problems that, if not addressed promptly, can lead to major breakdowns and high costs. At Grid Energy Company, we understand the importance of keeping your transformers in excellent working order. Discover common problems encountered and the solutions we offer to resolve them.
Types of power transformers
- Single-phase transformer: Used mainly in low-capacity installations, such as local distribution networks.
- Three-phase transformer: Most commonly used in high-voltage power transmission systems, where energy demand is higher.
- Autotransformer: Reduces energy losses in certain configurations where the voltage difference is small.
- Problem: Transformer overheating :
Overheating is one of the most frequent and serious problems with power transformers. It can be caused by overloading, poor ventilation or a malfunctioning cooling system. If left uncorrected, it can damage insulation, cause short circuits and shorten transformer life.
Grid Energy Company Solution:
We offer continuous thermal monitoring using infrared sensors and advanced temperature monitoring systems. In addition, our preventative maintenance solutions regularly check charge levels and ensure adequate ventilation to prevent overheating.
- Problem: Insulation degradation :
The insulation in a transformer is crucial for preventing short circuits. Degradation of this insulation, often caused by partial discharges or heat buildup, can lead to catastrophic failure. Signs of degradation may be difficult to detect with the naked eye, but can seriously compromise equipment safety.
Grid Energy Company Solution:
We use advanced technologies for partial discharge (PD) detection. Using online monitoring systems and devices like the OMICRON PD Analyzer, we detect early signs of insulation degradation and can schedule preventative maintenance before a major problem arises. We also perform regular insulation resistance tests to ensure short-circuit protection.
- Problem: Internal short circuit in the winding
Internal short circuits are one of the most serious problems that can occur in a power transformer. They are usually caused by a fault in the winding or by mechanical damage due to vibration or overload.
Grid Energy Company Solution:
We perform regular winding integrity checks, using techniques such as insulation resistance measurement and high-voltage wiring testing. Through our predictive maintenance and advanced diagnostic services, we can detect winding anomalies and prevent internal short circuits.
- Problem: Oil leaks:
Oil leaks can occur due to cracks or damage in transformer oil tanks. Since oil is essential for cooling and insulation, a leak can not only reduce transformer efficiency, but also pose an environmental risk.
Grid Energy Company Solution:
Our team regularly checks oil tanks for signs of leaks or worn seals. We also use advanced technology to measure dissolved oil gases (DGA), allowing us to detect leaks or internal damage before they become a major problem.
- Problème : Problèmes de surcharge et de protection :
Transformers can be prone to overloads when used at power levels above their capacity. This can lead to premature equipment failure and increase the risk of accidents.
Solution Grid Energy Company: We offer automated protection systems to monitor loads and trigger alerts or disconnections in case of overload. In addition, we perform load curve analyses to evaluate transformer performance and ensure they are operating within their capacity limits.
- Problem: Contamination and corrosion of external components :
Contamination by dust, moisture and other corrosive agents can damage the external components of the transformer, particularly the connections and terminals, thus compromising their reliability.
Grid Energy Company Solution:
We offer cleaning and protection services for electrical equipment, including transformers, to remove any external contamination. In addition, we apply protective coatings to sensitive parts to prevent corrosion and maximize the transformer's lifespan.
Conclusion: Preventive Maintenance, the Key to the Long Life of Power Transformers
Power transformers are vital equipment for the proper functioning of the electrical grid. To avoid unplanned outages and maximize their lifespan, it is crucial to adopt a strategy of preventive maintenance and continuous monitoring.
At Grid Energy Company, we offer complete solutions to ensure the reliability and performance of your power transformers, using state-of-the-art technologies to detect problems before they become critical.
Contact us today to find out more about our services and ensure the longevity of your equipment.
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