Measurement system applied to multi-state quantity electrified detection technology of transformer equipment

Abstract

The invention discloses a measurement system applied to multi-state quantity electrified detection technology of transformer equipment. In the prior art, much equipment in similar types is provided; wiring in the field is complex; test speed is slow and efficiency is low; and large-scale and highly efficient electrified detection cannot be carried out. The provided measurement system comprises modularization sensors, state quantity digitalization processing modules and an integrated system platform used for remote communication management. Secondary signal output specification ports of all sensors are the same and are accessed to the same state quantity digitalization processing modules, so on-the-spot detection analysis can be performed. The state quantity digitalization processing modules are combined according to onsite demands, and communicate with the integrated system platform through an onsite serial communication bus Rs485 or a high speed CAN bus. According to the invention, intelligent electrified detection based on much universal transformer equipment and synchronous carrying out of multiple state quantities is achieved and transmission protocols and communication protocols of large-capacity, multi-source and wide-measurement range sensors are established.

Description

technical field [0001] The invention relates to the live detection field of power transformation equipment, in particular to a measurement system applied to the live detection technology of multi-state quantities of power transformation equipment. Background technique [0002] At present, the method of voltage and current acquisition and communication is relatively traditional. Combined with the current online monitoring and operation status of Zhejiang Power Grid and the live detection through instruments, a comprehensive analysis and summary shows that the existing online monitoring and live detection have the following deficiencies. [0003] It was found that online monitoring has outstanding problems such as equipment online rate that cannot meet the requirements, frequent monitoring false alarms, and repeated equipment failures. After many online monitoring equipment quality improvement supervisions, the failure rate of online monitoring equipment has been reduced, but a...

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Problems solved by technology

[0003] It was found that online monitoring has outstanding problems such as equipment online rate that cannot meet the requirements, frequent monitoring false alarms, and repeated equipment failures. After many online monitoring equipment quality improvement supervisions, the failure rate of online monitoring equipment has been reduced, but all-weather monitoring is easily affected by the environment. With the aging of equipment and the lack of service of some manufacturers, the reliability of online monitoring data has not been greatly improved

[0004] Use a single instrument to carry out live detection, and the efficiency of single detection is low. The data of early instruments cannot be communicated and uploaded or stored remotely. Therefore, the utilization rate of the instrument is low, and live detection cannot be carried out in large quantities and quickly.

For example, the existing capacitive relative dielectric loss capacitance live detection instrument of Zhejiang Power Grid has only one measured channel and one reference channel, and can only detect one-phase equipment at a time; the arrester live monitor can only detect a group of three-phase arresters at a time. It is impossible to realize the simultaneous measurement of multiple interval devices in the whole station, and the data is inconvenient for horizontal comparison

[0005] At present, there are many types of instruments of similar types, complicated on-site wiring, slow test speed and low efficiency, making it impossible to carry out large-scale and high-efficiency live detection

The current live detection work needs to invest in a variety of equipment and a lot of manpower to carry out on-site tests on the equipment. Especially for abnormal equipment found in the detection, inspection personnel need to frequently go to the scene to carry out tracking, which consumes a lot of manpower and material resources, and cannot be carried out around the clock. monitor

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