Analysis on short-circuit current of 10 kV distribution network with neutral point ungrounded;

Study of resolving scheme for short-circuit current exceeding limit of the 220 kV busbars of Feixi substation;

Short-circuit current level and it s limited measures for hubei power grid in 2007;

Connection solutions of limited short circuit current in power stations and substations;

Analysis of effect of 1000kV UHV grid on the short circuit current of the Central China Grid and research on limiting measures of short circuit current;

Improving power supply capacity of Shanghai 220 kV district gird by controlling short circuit current;

A new practical calculating method is proposed according to short current calculation in practical work.

A formula for short current calculation in low voltage power grid distribution was put forward.

This paper presents that the selection of ratio and steady state test depend on the maximal short current,protection setting value and secondary load in .

The breaking of 1000/500kV electromagnetic loop network and the influence of short circuit of UHV is also primary analyzed,based on them the measure and advice is presented.

To obtain the batteries’ short circuit properties, the inner resistance and inductance must be known.

However, if is an out short circuit happens, the decrease of the short circuit of the Shunt Self generator will be slower than Shunt Self generator at the beginning, and during the second half time the decrease will become very fast which, the author suggests, may impair the excitation ability of the generator.

A novel topology of the solid state fault current limiter (SSFCL) is presented for medium- and high-voltage electric network.

Due to the great difference be-tween normal operation and black-start,the fault current should be calculated again in the process of designing pro-tection scheme for system black-start.

Large number of loop operation, especially the electromagnetic loop operation, has made the fault current excess the switch capacity.