Online evaluation device, method and system for performance and state of energy storage system

Abstract

The invention discloses an online evaluation device, method and system for the performance and state of an energy storage system. The online evaluation device comprises an encoding module, a selectionmodule and a data processing module. The online evaluation method comprises the following steps of: encoding acquired single battery voltage and temperature data and battery pack voltage and temperature data of the energy storage system to form time labels and position labels of single batteries and a battery pack; selecting the encoded single battery voltage and temperature data and battery packvoltage and temperature data according to the time labels to obtain all single battery voltage and temperature data and battery pack voltage and temperature data at the current time; and scoring allthe single battery voltage and temperature data and battery pack voltage and temperature data at the current time by utilizing an online evaluation algorithm, and giving evaluation results of each single battery and the battery pack according to the position labels. The online evaluation system comprises a processor and a memory coupled with the processor. Operation guarantee is added for safe operation of the energy storage system.

Description

technical field [0001] The invention belongs to the technical field of energy storage and battery management, and in particular relates to an online evaluation device, method and system for the performance and state of an energy storage system. Background technique [0002] The performance and status evaluation of the energy storage system is an important part of the operation of the energy storage power station. The daily management, repair and maintenance of the power station are mainly based on the data collected by local monitoring and remote monitoring (centralized monitoring and operation and maintenance platform) to find operational faults artificially. As well as regular and daily inspections of the operation and maintenance system of the power station to ensure the safe operation of the power station. The energy storage system is characterized by a large number of equipment, a large number of detection parameters, a complex working environment, and high real-time req...

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Problems solved by technology

[0002] The performance and status evaluation of the energy storage system is an important part of the operation of the energy storage power station. The daily management, repair and maintenance of the power station are mainly based on the data collected by local monitoring and remote monitoring (centralized monitoring and operation and maintenance platform) to find operational faults artificially. As well as regular and daily inspections of the operation and maintenance system of the power station to ensure the safe operation of the power station. The energy storage system is characterized by a large number of equipment, a large number of detection parameters, a complex working environment, and high real-time requirements. The information obtained by the energy management system EMS is relatively comprehensive. However, its real-time performance is not high. The current mainstream energy management system EMS collects data once every 1 minute or once every 20 seconds, while the battery voltage, current, and temperature fed back by the battery management system BMS are at the ms level. A lot of real-time data information used as system judgment is lost, resulting in incomplete system status and performance information presented, and the energy management system EMS only has relatively clear fault feedback for switch status information, which can be used as a criterion for maintenance. The measured values ​​of battery voltage, current, temperature, etc. are only detected, and there is no evaluation and feedback link

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