EXPERIMENTAL RESEARCH OF ESTABLISHMENT OF THE REGULARITY OF TEMPERATURE REDUCTION AND STOPPING OF THE COMBUSTION OF TRANSFORMER OIL DEPENDING ON THE PARAMETERS OF GRAVEL BACKFILL OF THE OIL RECEIVER

Abstract

In case of emergency operation or damage to the integrity of the transformer housing, they may cause a fire. Fire statistics show that 50% of fires in the energy sector are transformer equipment; as a rule, such fires are accompanied by emergency oil spill from the transformer and its ignition.

Existing approaches to limiting the spread of fire during accidents at oil-filled transformer substations are insufficient and cost-effective to minimize the consequences of spillage of burning transformer oil.

At the same time, a number of design parameters were identified that negatively affect the effectiveness of fire control. In particular, the rules for the arrangement of electrical installations provide for the provision of electrical substations with oil receivers, which are covered with gravel, which is constantly polluted due to environmental influences, which impairs its capacity and cooling capacity.

Structural and geometrical parameters of oil receivers with oil drainage by oil drains, determined by the rules of arrangement of electrical installations, can be the subject of scientific research to improve them.

The article presents the results of an experimental study to identify patterns of reduction of the combustion temperature of transformer oil to a temperature below the flash point of the oil depending on the geometric parameters of the gravel backfill of the oil pan during draining the oil into the emergency tank.

The essence of the method of experimental research is to identify patterns of reduction of the combustion temperature of transformer oil to a temperature below the flash point depending on the geometric parameters of the gravel backfill when draining the oil into the emergency tank (oil tank).