Online monitoring method for states of secondary device of distribution network

Abstract

The invention discloses an online monitoring method for states of a secondary device of a distribution network. The online monitoring method includes: quantities of states of corresponding devices are acquired by a plurality of acquisition units; if the state quantity of one of the devices is larger than an alarm threshold value, by the aid of the corresponding acquisition unit, alarm signals are transmitted to the acquisition units of the other devices, and abnormal data are transmitted to a server; an instruction is transmitted by the server, and the state quantities of the other devices are acquired by the acquisition units of the corresponding devices; the state quantities of the other devices are compared with the abnormal data by the acquisition units of the corresponding devices, and comparison results are reported to the server; by the aid of the server, a querying instruction transmitted by a client end is received and the abnormal data are transmitted to the client end. The online monitoring method has the advantages that working states of the secondary devices of a power grid can be recognized effectively, quickly and accurately, workload of maintainers is reduced, and safety and stability of the intelligent power grid are benefited.

Description

technical field [0001] The invention relates to the technical field of real-time monitoring of power grid equipment, in particular to a method for online monitoring of the status of secondary equipment in a distribution network. Background technique [0002] Substation control circuits and relay protection equipment are subjected to electrical (primary equipment ground fault or operating overvoltage), thermal, mechanical (vibration) effects, and natural environment (atmospheric overvoltage, air temperature, air pressure, humidity and pollution) during operation. etc.), the aging will cause the performance to decline gradually, and the reliability will gradually decrease. Under the action of high voltage and high temperature, the insulation performance of the insulation material of the equipment will decrease, which will eventually lead to the destruction of insulation performance (DC grounding); overvoltage (lightning strike) in the atmosphere will damage the power supply of...

AI Technical Summary

Problems solved by technology

[0003] The current equipment maintenance requires a large-scale power outage, which affects the electricity consumption of enterprises and residents

Today, more than 90% of the equipment has reached the level of maintenance-free (less) maintenance due to the use of digital static equipment. Using traditional maintenance methods to overhaul the equipment one by one will result in insufficient or excessive maintenance and blind maintenance.

This method ignores the differences in the initial state of the equipment (product quality) and the changes in the state of the equipment caused by different operating environments. It is neither economical nor reasonable to adopt a one-size-fits-all approach, resulting in a lack of scientificity and flexibility in practice.

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