Research and Application of Detection and Protection Techniques for DC Arc Faults in ESSs
To investigate arc detection & protection methods in ESSs,an arc detection algorithm based on time-domain triggering and frequency-domain protection is proposed.Firstly,an arc detection hardware was designed,including self-check,gain,and filtering circuits.This hardware amplifies the peak-to-peak current variation difference after an arc occurs in the energy storage system,through the use of a TMR current sensor.Secondly,time-domain features are extracted using a delayed sliding window method for use as trigger conditions in the arc detection algorithm.Once triggered,frequency-domain features are calculated and input into the arc detection model.If it is determined to be a genuine arc event,the ESS immediately performs a shutdown action.The test results of the algorithm show that this method can accurately identify the arc faults in the energy storage system under series circuits,with a detection accuracy rate of 100％,meeting the requirements for practical applications.
ESSssafetyarc detection and protection techniquesarc detection model
万方数据
维普
