A Transformer Insulation State Monitoring System

Abstract

The invention provides a transformer insulation state monitoring system. The transformer insulation state monitoring system comprises an operating condition analysis unit, an electric quantity analysis unit and a non electric quantity analysis unit, wherein the operating condition analysis unit is used to analyze the obtained operating state information and the fault state information of a transformer, and identify the operating condition of the transformer and the occurred abnormal event of the transformer; the electric quantity analysis unit is used to analyze the each obtained electric quantity of state of the transformer, so as to determine the transient operating condition experienced by the transformer; the non electric quantity analysis unit is used to analyze the each obtained nonelectric quantity of state of the transformer, so as to determine whether the transformer is abnormal; every two of the operating condition analysis unit, the electric quantity analysis unit and the non electric quantity analysis unit are connected to each other through a CAN bus and Ethernet respectively; and the operating condition analysis unit, the electric quantity analysis unit or the non electric quantity analysis unit synchronizes the abnormal events of the transformer to the other two analysis units through the CAN bus, so as to realize highly reliable monitoring of the transformer insulation state.

Description

technical field [0001] The invention relates to the field of transformer monitoring, in particular to a transformer insulation state monitoring system. Background technique [0002] During the actual operation of the transformer, the insulation system is subject to the combined effects of thermal, electrical, mechanical and environmental factors. Multiple factors affect each other, and the impact on the insulation system may be mutual promotion or mutual inhibition. IEC60505 defines it as the "synergistic effect" of multiple factors on the insulation system. [0003] With the continuous change of the power transformer load, the continuous change of the operating environment, the operation of the interconnected power equipment and the change of its own health, the operating conditions of the transformer are constantly changing. It makes the transformer more complex due to the synergistic effect of many factors. For example, the vibration of the transformer winding may cause ...

AI Technical Summary

Problems solved by technology

It makes the transformer more complex due to the synergistic effect of many factors. For example, the vibration of the transformer winding may cause wear and tear on the turn insulation, thereby affecting the partial discharge of the transformer; the change of the transformer load will affect the force of the winding, and then affect the transformer. The vibration of the transformer; the change of the transformer oil temperature has a direct or indirect impact on the partial discharge of the transformer, the dielectric loss of the bushing and the vibration of the transformer, etc.

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