On-line monitoring system for state of secondary equipment of distribution network

Abstract

The invention discloses an on-line monitoring system for the state of secondary equipment of a distribution network. The on-line monitoring system comprises a plurality of signal detectors arranged in parallel and used for carrying out state quantity detection and characteristic quantity extraction on the equipment and loops to be detected, a server connected with the signal detectors, and a plurality of client sides connected with the server. The server is used for processing data of the signal detectors. The client sides are used for viewing data stored in the server. Each signal detector comprises a signal transmitting and receiving unit, and the signal transmitting and receiving units of the signal detectors are connected with one another and connected to the server respectively and are used for data exchange and comparison between the signal detectors. The on-line monitoring system can recognize the working state of the secondary equipment of a power grid effectively, quickly and correctly, reduce the workload of maintenance personnel and promote the safety and the stability of the power grid.

Description

technical field [0001] The invention relates to the technical field of real-time monitoring of power grid equipment, in particular to an online monitoring system for 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 t...

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.

Images