09,22,2026 22 views
Future development
At present, the country is developing an intelligent power grid, and the online monitoring system for transformer cores is a relatively important component of the intelligent power grid. As early as the 1980s, foreign countries began to research and realize unmanned substations for transformer core online monitoring systems, which can save a lot of manpower and material resources, and can timely and effectively detect the grounding point of transformer cores. Through a series of data, it can analyze whether there is a risk of multi-point grounding in transformers, and better ensure the normal operation of transformer equipment. At present, the country has proposed the requirement of online monitoring of transformer iron cores in safety regulations, and the deployment of online monitoring of transformer iron cores will be fully realized within the next five years. Foreign technology workers and relevant departments have long recognized the shortcomings of regular maintenance and preventive testing, and have been committed to researching online monitoring and condition based maintenance of electrical equipment. Its advantage lies in the ability to detect early signs of faults in a timely manner, allowing operation and maintenance personnel to eliminate hidden dangers through detection methods when faults are in their infancy, thereby avoiding the occurrence of malignant accidents and improving maintenance quality and efficiency. With the development and application of sensor technology, signal processing technology, and computer technology, online monitoring technology for electrical equipment, which serves as the foundation of condition based maintenance, has developed rapidly and has become an important component of insulation testing. It will make up for the shortcomings of relying solely on scheduled preventive tests in many aspects. By monitoring the grounding current of the iron core online, the working condition of the iron core can be accurately determined, and targeted maintenance can be carried out in a timely manner before the iron core fails. This not only effectively improves the reliability of power supply, but also reduces the operating costs of the power system, which is of great significance for ensuring the safe operation of power transformers.
Application and promotion of achievements
1. Solved the huge human and material costs incurred by the power sector due to shutdown maintenance, not only causing inconvenience to electricity users, but also the problem of excessive maintenance.
2. Solved the problem of long interval between two preventive tests, difficulty in detecting sudden insulation faults, and insufficient maintenance.
3. Solved the difference between experimental and operating conditions, as some offline tests cannot reflect the insulation condition of the equipment under operating conditions.
4. Solved the problem of new equipment failures caused by human error during major repairs and power outage tests.
4. Solved the problem of new equipment failures caused by human error during major repairs and power outage tests.
