PROCESSING OF MEASUREMENT RESULTS DURING TESTING THE OBJECT UNDER THE INFLUENCE OF A DIRECT LIGHTNING STRIKE

The current state of the problem of evaluating oscillograms during tests for the action of pulsed currents and voltages are analyzed, and the lack of interpretation tools that would meet the requirements of specialized standards for electromagnetic compatibility testing was shown. The program algorithm has been developed for interpreting the results of testing technical objects for resistance to a direct lightning strike in terms of processing oscillograms of various current components. The use of the trapezoidal method for numerical integration enabled the implementation of the algorithm as software for oscillogram interpretation in the Embarcadero RAD Studio XE8 programming environment. Standardized methods for determining pulse front, rise time, and pulse duration were taken into account during the implementation. In addition, the program allows you to determine the charge value and the integral of the current action in accordance with normalized values. Manual adjustment of the analysis interval was added, allowing the filtering of other current components and "noise" effects. The developed software found practical application in the verification testing of artificial lightning current generator complexes. The correctness of the program operation was confirmed by an empirical method. To obtain oscillograms, a measuring shunt with a range of up to 300 kA, lightning component pulse current generators and a simulated test object were used. The analysis was performed for all four components of artificial lightning, including the shortened constant component C*. Comparison of the interpretation results with "manual" analysis proved the high accuracy of the calculation (deviation up to 3%) with significantly less (5-10 times) time costs. Its extensive capabilities make the tool suitable for high-voltage testing and research in power engineering and related fields.