Precise leveling system for automatically measuring winding disconnection and three-phase active power synchronous phasor

Abstract

The invention provides a precise leveling system for automatically measuring winding disconnection and three-phase active power synchronous phasors. The precise leveling system for automatically measuring the winding disconnection and the three-phase active power synchronous phasor comprises a winding disconnection measuring system and a three-phase active power synchronous phasor leveling system, wherein the precise leveling system for automatically measuring winding disconnection and the three-phase active power synchronous phasor is matched with a circuit operation identification unit through a circuit operation monitoring module; an operation state of a three-phase circuit can be monitored and identified, and a three-phase current monitoring module is matched with a current analysis module and a delay monitoring module, so the current of the three-phase circuit in operation can be monitored and analyzed, and whether winding of the transformation equipment is broken or not can be judged timely according to the current condition of the three-phase circuit; a winding disconnection judgment module is matched with the transformation equipment operation control module and a master station control center, so the transformation equipment can be closed in time, and the transformation equipment and related power equipment can be protected.

Description

technical field [0001] The invention relates to the technical field of three-phase circuit control, in particular to a precision leveling system for automatically measuring winding disconnection and three-phase active power synchronous phasors. Background technique [0002] When the transformer is in operation, it needs to monitor its operating power data in real time. With the continuous development of network technology, remote real-time monitoring of the operating status of the transformer can be realized through the Internet of Things technology, which is convenient for timely grasping the operation of the transformer. Winding disconnection is one of the power failure phenomena of the transformer. When the transformer has a winding disconnection fault, it will affect the power of the three-phase circuit on the low-voltage side of the transformer, causing the active power in the three-phase circuit to be unbalanced. The unbalanced active power of the phase circuit may aff...

AI Technical Summary

Problems solved by technology

Winding disconnection is one of the power failure phenomena of transformers. When a winding disconnection fault occurs in the transformer, it will affect the power of the three-phase circuit on the low-voltage side of the transformer, making the active power in the three-phase circuit unbalanced. The unbalanced active power of the phase circuit may affect the service life of the power distribution equipment and the power consumption equipment, and even burn the power distribution equipment and the power consumption equipment

[0003] At present, the research on winding disconnection and three-phase active power imbalance has not realized the monitoring of three-phase current imbalance of power equipment. When the power system has three-phase unbalanced operation of power primary equipment and measurement winding disconnection, because the measurement and control device does not have The monitoring function cannot send out alarm information in time, so that the dispatching automation system cannot immediately detect the disconnection of the measuring winding and the unbalanced operation state of the power equipment through manual methods.

[0004] When the existing transformer is in operation, there is no real-time monitoring system for winding disconnection faults. When a winding disconnection fault occurs, it cannot respond to the transformer in time, which may delay the time to implement remedial measures for the transformer, and will damage the transformer. Equipment and related power equipment will have a certain impact. At the same time, it is impossible to monitor and adjust the imbalance of active power in the three-phase circuit in real time, which may cause certain damage to transformers and other related power distribution equipment.

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