Energy management device and system for assisting thermal power generating unit frequency modulation through flywheel hybrid lithium battery energy storage

Abstract

The invention discloses an energy management device and system for assisting frequency modulation of a thermal power generating unit by flywheel hybrid lithium battery energy storage. In one embodiment of the invention, the energy management device for assisting the thermal power generating unit frequency modulation through flywheel hybrid lithium battery energy storage comprises a data acquisition and monitoring module configured to communicate with an energy storage frequency modulation control device through a special protocol, acquire controller data and perform real-time monitoring operation, and acquire operating state data of an energy storage system and a unit; and a frequency modulation control module configured to automatically perform calculation based on a system working condition according to an AGC instruction, obtain a real-time energy storage output requirement, generate a corresponding output instruction and issue the output instruction to a lithium battery energy storage system and a flywheel energy storage system in real time so as to control the output of the energy storage system. According to the embodiment of the invention, the functions of the energy storagesystem in actual operation are perfected, the requirements of thermal power frequency modulation are met, and the reliability, the efficiency, the frequency modulation performance and the like of a hybrid energy storage combined thermal power frequency modulation system can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of energy management, in particular to an energy management device and system for energy storage of a flywheel hybrid lithium battery to assist thermal power unit frequency modulation. Background technique [0002] At present, the calculation rules of the thermal power frequency regulation system take the frequency regulation mileage of the power generation unit as the transaction target, and the most important one is the frequency regulation performance index K composed of the three technical indicators of the power generation unit’s response to the AGC control command’s adjustment rate, response time and adjustment accuracy. [0003] The current energy storage participates in the AGC frequency regulation of the power grid. The AGC scheduling command of the power grid is sent to the thermal power unit, and the energy storage system simultaneously obtains the AGC command and participates in frequency regulati...

AI Technical Summary

Problems solved by technology

However, the self-control of the hybrid battery energy storage system and the linkage coordination with thermal power units have not yet been clearly defined, resulting in the lack of functions or redundancy, reduced reliability, reduced efficiency, and reduced frequency modulation performance in the actual operation of the energy storage system.

Images