Using of explosive technologies for development of a compact current-limiting device for operation on 110 kV class systems

31st International Conference on Equations of State for Matter

Shurupov, A.V.^1 ; Shurupov, M.A.^1 ; Kozlov, A.A.^1 ; Kotov, A.V.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13 Bldg 2, Moscow

125412, Russia^1

关键词: Current limiting device;    Electric power facilities;    Electrical circuit;    High heat capacity;    Its efficiencies;    Physical principles;    Single-phase short circuits;    Switching elements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012079/pdf
DOI  :  10.1088/1742-6596/774/1/012079

来源: IOP

【 摘 要 】

This paper considers the possibility of creating on new physical principles a highspeed current-limiting device (CLD) for the networks with voltage of 110 kV, namely, on the basis of the explosive switching elements. The device is designed to limit the steady short-circuit current to acceptable values for the time does not exceed 3 ms at electric power facilities. The paper presents an analysis of the electrical circuit of CLD. The main features of the scheme are: a new high-speed switching element with high regenerating voltage; fusible switching element that enables to limit the overvoltage after sudden breakage of network of the explosive switch; non-inductive resistor with a high heat capacity and a special reactor with operating time less than 1 s. We analyzed the work of the CLD with help of special software PSPICE, which is based on the equivalent circuit of single-phase short circuit to ground in 110 kV network. Analysis of the equivalent circuit operation CLD shows its efficiency and determines the CLD as a perspective direction of the current-limiting devices of new generation.