简答题The arc suppression coil is installed between the neutral point of the transformer and the earth, which is capacitive (). A、正确 B、错误简答题Can short circuit current limiting device is ( ). A、Capacitor B、Disconnecting switch C、 Reactor D、 The generator简答题The statement about arc suppression coil over compensation mode is correct () A、The compensated inductance current is larger than the grounding capacitance current when the power system is single-phase grounded B、 When part of the circuit is cut off, the overcompensation current is larger and will not be completely compensated C、In general system, the arc-suppression coil installed at the neutral point of transformer and the arc-suppression coil with the neutral point of generator with direct wiring should be overcompensated. D、The current flowing through the arc suppression coil is large during normal operation简答题Arc suppression coil overcompensation refers to the inductance current is greater than the grounding capacitance current (). A、正确 B、错误简答题One of the functions of series reactors in power grid is ( ). A、Limit short circuit current B、Limiting overvoltage C、Compensating capacitive current D、Reactive power compensation简答题At present, there are several measures to limit short-circuit current in power system, such as () A、Separate operation of transformers or power supply lines B、 Low voltage split winding transformer C、In the circuit installed reactor, etc D、 Increase the conductor cross-sectional area简答题The statement about arc suppression coil in power system is correct () A、Usually connected between the transformer neutral point and ground B、Arc suppression coil is inductive C、When the power system is normal, there is a large inductive current through the arc suppression coil; D、 The current at the grounding point can be small or equal to zero if the number of turns of arc suppression coil is properly selected简答题Current Limiting reactors for use in power systems A、It is an inductance coil with very little resistance B、 Series limits short circuit current in the circuit C、Usually without an iron core D、 The reactance varies with the amount of current through简答题Arc suppression coil undercompensation means that the grounding capacitance current is less than the inductance current (). A、正确 B、错误