Online monitoring system for dissolved gases in transformer oilIt is the most important equipment in the power system and also one of the equipment with the highest number of accidents. Real time monitoring of its operation status is of great significance to ensure its safe and reliable operation.Online monitoring system for dissolved gases in transformer oilThe composition and content to some extent reflect the degree of insulation aging or failure of transformers, and can be used as characteristic quantities to reflect equipment abnormalities.

Online monitoring system for dissolved gases in transformer oilBasic principle:
Export short-circuit fault refers to the damage suffered by operating transformers due to the impact of export short-circuit fault. When the transformer outlet is short circuited, its high and low voltage windings may simultaneously pass through short-circuit currents tens of times higher than the rated value, which will generate a large amount of heat, causing the transformer to overheat severely and damage the insulation.
1. The windings of various transformers are made up of insulated winding wires arranged in a certain pattern and direction, wound, shaped, immersed, and assembled. Due to improper production, transportation injuries, moisture damage during operation, and various overvoltage and overcurrent impacts, the insulation of the winding is damaged, aged, and deteriorated, resulting in faults such as short circuits, open circuits, and deformations. This may cause local overheating, partial discharge, spark discharge, arc discharge, and other faults inside the transformer.

2. The body of a transformer with iron core faults is mainly composed of windings and iron cores, which are the main components for transmitting and exchanging electromagnetic energy in the transformer. The iron core not only requires good quality, but also a reliable grounding point. When the iron core is only grounded at one point, the transformer can operate normally. When two or more grounding points occur, it may cause eddy currents in the iron core, increase iron loss, and cause local overheating of the iron core. Severe multi-point grounding can even cause the grounding wire to burn out, causing the transformer to lose a normal grounding point and suffer serious damage.