Distributed wireless high-voltage equipment insulating live testing system and testing method

Abstract

The invention relates to distributed wireless high-voltage equipment insulating live testing system and a testing method. The testing system is characterized in that the testing system comprises at least three testing circuits; the testing circuit for testing voltage, current amplitude and phase comprises a voltage data collection end and more than two current data collection ends, output ends of the voltage data collection end and the current data collection ends are respectively connected with an input end of a collection terminal, and the output ends of the collection terminals are connected with a control end through a wireless network. As the invention adopts the high-precision multi-circuit testing system constituted by a distributed sensor network which adopts the wireless sensor network transmission technology and the GPS synchronization collection technology, the testing efficiency of the system is improved. The invention can be widely applied to the live testing of capacitance of capacitive equipment, dielectric loss and resistive current of arresters in various electric power systems.

Description

Technical field [0001] The invention relates to a test system for electrical equipment in a power system, in particular to a distributed wireless high-voltage equipment insulation live test system and a test method for testing the insulation status of high-voltage electrical equipment. Background technique [0002] In order to grasp the insulation status of high-voltage electrical equipment in the power system, it is necessary to adopt live test technology to periodically measure the dielectric loss and capacitance of the capacitive equipment in operation, and measure the resistive current of the arrester. At present, the live test of capacitive equipment and lightning arrester is to compare the current phase between the equipment, measure the relative phase difference, calculate the relative dielectric loss, and use the wired centralized method to connect the current signal to the same live test instrument through the test cable for comparison measuring. However, due to the long...

AI Technical Summary

Problems solved by technology

However, due to the long distance between the devices, the test needs to connect a long test cable, which will bring many adverse effects. On the one hand, due to frequent wiring, the wire connector will be disconnected, resulting in the end screen of the capacitive device under test (that is, the test point) the danger of open circuit, which endangers the safe operation of the equipment; on the other hand, it will increase the workload of field wiring, and the length of the wire will cause measurement errors

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