When the fault occurs, LCS is blocked and the fault current
commutates to the IGBTs in the main switch (Figure 5(c)).
The equivalent circuit of the network segment was made up to receive the analytical dependence of the fault current
on time (Figure 3).
Manufacturing and testing of MCP 2212 bifilar coils for a 10 MVA fault current
They are solid-state transfer switches and solid-state fault current
The analysis results indicated that the turnout faults could be diagnosed through the proposed method automatically with 100% accuracy for 5 typical fault current
This results in high DC-link voltage and a higher initial fault current
Considering the huge short circuit current, high fault current
withstand capability equipment such as circuit breakers and buses should be applied.
From the existing simulation and experimental results of theoretical models and test prototypes, the expected functions of each type of SFCL are to suppress the fault current
without time delay, compensate the voltage sag within an acceptable level, and improve the power system transient stability through the coordination with relay protection [7-10].
Compared with simulation results of Figures 5, 6, 7, and 9, the waveforms of inrush current and the inner fault current
all have large amplitude.
The waveforms of the fault current
at fault location X are given in Figure 4.
Figure 5 shows the ratio of negative to positive sequence of current and in Figure 6 above curve is angle between pre fault and post fault current
, and down curve angle difference between fault voltage and current under normal condition.
Brookhaven National Laboratory's aFCL is a novel superconducting fault current
limiter (FCL) that can transmit a large amount of electrical energy during the "on" state without any added conduction losses.