Intelligent monitoring and alarming system for power grid

Abstract

The invention discloses an intelligent monitoring and alarming system for a power grid. The intelligent monitoring and alarming module comprises a power grid module, a dispatching data network, an intelligent monitoring and alarming module, an information issuing and managing module and a user operating module which are connected successively. The intelligent monitoring and alarming module comprises a power grid system and a processing system. The power grid system includes a generator set, a booster circuit, an inverter, a filter and a circuit breaker. The processing system comprises a signal acquisition circuit, a multiplexer, an A / D conversion circuit, a DSP processing center module and a communication module. The generator set, the inverter and the circuit breaker are all connected with the signal acquisition circuit, and the processing system also comprises an alarming device connected with the output end of the A / D conversion circuit, the input end of the circuit breaker and the input of the DSP processing center module. The intelligent monitoring and alarming system has a good practical value, achieves timely alarm information and high precision, is moderate, prevents a waste of resources, reduces economic maintenance cost, has good safe use performance and satisfies practical use requirements.

Description

technical field [0001] The invention specifically relates to an intelligent monitoring and alarm system for a power grid, which belongs to the technical field of power grid operation safety management. Background technique [0002] With the rapid development of the economy, in order to meet the growing demand for electricity, the number of substations and transmission lines in the power grid system is increasing. After the power system fails, how to restore the operation of the power grid in a timely and effective manner has become an urgent problem to be solved. a practical question. Due to the complex terrain in some areas, there are many crossing transmission lines and transmission lines. When the transmission line fails, especially the transmission professionals want to determine the exact location of the fault point in the first time, so as to avoid detours; but conventional The best solution is to call the report on the spot by the duty officer, and then fax it to the...

AI Technical Summary

Problems solved by technology

Due to the complex terrain in some areas, there are many crossing transmission lines and transmission lines. When the transmission line fails, especially the transmission professionals want to determine the exact location of the fault point in the first time, so as to avoid detours; but conventional The best solution is to call the report on the spot by the duty officer, and then fax it to the dispatching department and the professional team, or ask the protection professionals to call the report at the remote end through the telephone line. Generally, it will take several hours to get it at the fastest. report, the efficiency is low, and the substation is currently unattended, and after some power grid systems fail, professionals must drive to the substation to obtain the report, which is time-consuming and laborious, and seriously affects the speed of fault handling; especially in thunderstorms, strong winds, etc. In extreme weather such as heavy fog or heavy fog, it will be difficult to quickly restore power grids and substations after failures

[0003] So far, the research on intelligent early warning and application system (power grid) at home and abroad is still at the bottom. At present, the research and application on fault diagnosis and intelligent alarm are mainly at the two levels of centralized diagnosis of dispatching center and local diagnosis of substation. There is a lack of coordination between the two, that is, there is a lack of distributed fault diagnosis and alarm functions coordinated by the substation-dispatching center. The substation fault diagnosis system is mainly used in the substation automation system, and the substation-level fault diagnosis is realized by using the fault recording information in the substation. , combined with the integrated expert system to realize substation-level fault diagnosis, so as to realize substation-level event analysis and intelligent alarm. The centralized fault diagnosis of the dispatch center mainly obtains the alarm information of the entire network in the dispatch center, and establishes a fault diagnosis model of the entire network to complete the fault diagnosis.

Therefore, the practicability of the grid intelligent alarm system in the prior art has not been ideal, and the alarm information may be falsely reported or missing; at the same time, the system is too large, resulting in waste of resources and high maintenance costs.

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