Station site off-line measurement and control system for power grid

Abstract

The invention discloses a station site off-line measurement and control system for a power grid. The system comprises a concentrator which is a central connection point device for connecting a terminal, a computer and a communication device, and is also a central point for cable convergence; a station heartbeat receiving unit is used for receiving the heartbeat of each station and reporting a receiving result to the concentrator, and if the heartbeat of a certain station is not received for a period of time, the station is preliminarily affirmed to be offline; a station detection unit is used for detecting a station which is preliminarily determined to be offline and a neighbor station of the station and reporting a detection result to the concentrator, if the station which is preliminarily determined to be offline does not respond and the neighbor station does not detect the station, the station is judged to be offline, and if the station which is preliminarily determined to be offline does not respond to the neighbor station, the station is judged to be offline; the system can more clearly detect whether the reason of power failure is electric meter power failure or channel change, is beneficial to solving problems, can store off-line information of each station, and avoids the situation that off-line and on-line events are not reported in pairs.

Description

Technical field [0001] The present invention relates to the technical field of measurement and control system, in particular a site offline measurement and control system for grid. Background technique [0002] With the development and promotion of intelligent grids, my country's power supply level is increasing, and it is better to meet the power supply needs of various users, but at the same time, users have put forward increasingly in terms of power supply, fastness, etc. The higher the requirements. An important side of improving power supply reliability is to reduce the occurrence of electricity failure, and quickly diagnose power failures after electricity failure, in order to repair the grid to restore the grid as soon as possible. The power failure here can refer to the factors that have abnormal power grids such as equipment failure, power failure, risk failure, and the like. [0003] The occurrence of large-scale power-on accidents or power outage will cause huge losses...

AI Technical Summary

Problems solved by technology

[0006] (1) Although the existing off-line detection system for the power grid can judge the power outage of the site, it cannot distinguish whether the cause of the power outage is the power outage of the meter or the channel change, which is not conducive to solving the problem immediately;

[0007] (2) When the site goes online again after a power outage, due to the reset and restart of the CCO, there will often be cases where offline and online events are not paired, which is not conducive to determining the actual power outage situation of each site

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