Аналитическая модель реакции блока «генератор – трансформатор» на воздействие геоиндуцированных токов
Year: 2024
Type: article
Abstract: An analytical model of the magnetizing current surges of a block transformer with an armored design of the magnetic system is substantiated by verification of the results of computer modeling and experimental research. An equivalent circuit for the generator-transformer block has been developed taking into account the saturation of the magnetic system of the block transformer under the effect of geomagnetically induced currents (GIC) which is modeled by the switch closure. The magnetizing power of the block transformer and the reactive power of the generator are determined, and the limits of admissibility of the linear approximation of the dependences of the magnetizing power and reactive power of the generator on the GIC value are substantiated. A generalized scenario has been developed for the response of the generator-transformer unit to the GIC impact, including various options for the development of an anomalous mode, taking into account the action of an automatic regulator of excitation maintaining a constant voltage level on the generator buses until the need to reduce the active load and the voltage setting preventing possible overcurrent stator and excitation current.
Source: Промышленная энергетика
Language: Russian
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7215158018