Live testing system for electrical equipment

Abstract

The invention discloses a live testing system for electrical equipment, which consists of a sensor (1), an A / D acquisition chip (2), a single chip (3) and a computer (4). An output end of the sensor (1) is connected with an input end of the A / D acquisition chip (2); the A / D acquisition chip (2) is connected with an input end of the single chip (3) through an output end of the A / D acquisition chip;and the single chip (3) is connected to an input end of the computer (4) through a 485 bus. Voltage and current signals are converted into signals in a sampling range of the acquisition chip by the sensor (1) to be synchronously acquired in eight channels, so the system realizes synchronous relative dielectric loss measurement by using the fiber / bus synchronization technology. The system can carry out live testing for the electrical equipment synchronously for a plurality of transformer stations, has less investment and strong generality, also can carry out longitudinal and transverse comparison, and has strong capacity of resisting disturbance and high calculating precision.

Description

Technical field [0001] The invention belongs to the technical field of power engineering equipment, and particularly relates to a live test system for electrical equipment. Background technique [0002] In order to grasp the operating status of electrical equipment in real time, an online monitoring system for electrical equipment is currently being used for large hub substations with voltage levels of 220kV and above, in order to obtain higher output benefits. However, the one-time investment in the installation of the online monitoring system is quite large. For the large number of 110kv substations, this is an excessive investment. On average, there are more than 30 in each prefecture-level city, all of which are installed with online monitoring systems. Excessive investment, tens of millions of yuan at every turn, is a high-cost operation that no enterprise wants to see. Summary of the invention [0003] The technical problem to be solved by the present invention is to provid...

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Problems solved by technology

However, the one-time investment in the installation of the online monitoring system is quite large. For a large number of 110kv voltage level substations, this is an excessive investment. On average, there are more than 30 substations in each prefecture-level city, all of which are equipped with online monitoring systems. Excessive investment, often tens of millions of yuan, is a high-cost operation that no enterprise wants to see

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