Fault Diagnosis and Self-healing Control of Control System Adapted to Energy Storage Frequency Regulation
A control system fault diagnosis and self-healing control method adapted to energy storage frequency regulation is pro-posed to improve the performance of the control system of power units involved in energy storage frequency regulation.Firstly,the I/O data of the physical control system is collected and pre-processed,and a control system model is established based on the physical mechanism.Secondly,an improved extended state observer is constructed at the control system model level,based on which,the control system fault criterion is designed to carry out the fault diagnosis of the system.Finally,a variable load perturba-tion test is conducted to verify the effectiveness of the method.In the test,the coutrol deviation of main steam pressure after opti-mization is 31.3%of that before optimization on average,and the stability of main steam pressure is greatly improved.
battery energy storageextended state observerfault diagnosisinferential controlmodel-free adaptive control
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