Analysis of arc surges in electric networks of the Arctic region

• Published in: IOP Conference Series: Earth and Environmental Science
• Main Authors: Morozov, I N, Kirillov, I E, Naznachilov, A V
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2020
• Subjects: Arctic; Kola Peninsula; kola peninsula
• Online Access: http://dx.doi.org/10.1088/1755-1315/539/1/012148; https://iopscience.iop.org/article/10.1088/1755-1315/539/1/012148/pdf; https://iopscience.iop.org/article/10.1088/1755-1315/539/1/012148

Abstract This work is devoted to the urgent issue of the analysis of arc surges in electric networks of the Arctic region of the Russian Federation, using the electric power system of the Kola Peninsula as an example. The article presents an approach to the development of a computational model of a power system in the Matlab software environment, the Simulink simulation application. When compiling the calculation model, the following points were taken into account: the model was in a three-phase formulation; the inductances of overhead power lines were taken into account; non-linear arc resistance was taken into account; grounding resistance was taken into account; the magnetic coupling between the phases and interphase capacitances were taken into account. Based on the results of the model, graphs of transients in the system were obtained for various operating modes. The correctness of the calculation model was checked on the following points: on the voltage, it is necessary that the phase voltages on the buses of the substation ΦC-24 correspond to the phase voltages at all points of the model and be shifted relative to each other by an angle of 120 °; current, current at all points of the system, the current must be symmetrical; according to the current of a single-phase short circuit, it is necessary that the value of the short circuit current obtained using the calculation model corresponds to the current value obtained in the analytical calculations. In the study of arc surges, more than 60 calculations were performed. The performed calculations showed the dependence of the overvoltage ratio on the fault location and the uneven distribution of overvoltages in the considered sections. An analysis of the results obtained in the work allows us to conclude that it is advisable to apply this approach to other electric power systems of the regions of the Russian Federation and other countries.