Large-scale energy storage power station operation unit fault early warning method and system

Abstract

The invention discloses a large-scale energy storage power station operation unit fault early warning method and system. The method comprises the following steps of: collecting discharge data of an energy storage battery as reference historical data; collecting operation state parameter data of the energy storage main system, the energy storage subsystems and energy storage units contained in theenergy storage subsystems; constructing an importance analysis model, analyzing the correlation degree of the energy storage subsystems and the energy storage total system, and determining the importance factor of each energy storage subsystem; analyzing the correlation degree of the energy storage units and the energy storage subsystems, and determining the importance factor of each energy storage unit; selecting an energy storage subsystem and an energy storage unit of which importance factors are greater than a preset threshold value, and analyzing the operation state parameter data of theenergy storage subsystem and the energy storage unit and the reference historical data by adopting a long-short term prediction neural network to obtain a prediction result of a next time unit; and when the deviation between the prediction results of the energy storage subsystem and the energy storage unit and the reference historical data is greater than a preset threshold, fault early warning issent out.

Description

technical field

[0001] The present invention relates to the technical field of electric power storage, and more specifically, to a method and system for early warning of faults in operation units of large-scale energy storage power stations. Background technique

[0002] Energy storage technology is an important part of the energy system in the new era, and it is also a key technology to support the integration of new energy into the grid. China's energy storage industry started relatively late, but it is developing very fast. At present, domestic energy storage technology is actively exploring the commercial application of energy storage under different scenarios, technologies, scales and technical routes in demonstration applications, and at the same time standardizes relevant standards and testing systems. From 2016 to 2017, my country's planned and under-construction energy storage scale was nearly 1.6GW, accounting for 34% of the global planned and under-construction s...

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