Short-circuit current limiter

• Main Author: JIA JIYING
• Format: Patent
• Language: Chinese; English
• Published: 12.02.2014
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

The invention provides a short-circuit current limiter to solve the problem that reliability of thyristors in an LC series resonance type current limiter is lowered due to the fact that the thyristors in the LC series resonance type current limiter need to bear high voltages and large currents . The short-circuit current limiter is characterized in that an equivalent capacitance circuit C' is connected to the two ends of an inductor L of the LC series resonance type current limiter in parallel, the equivalent capacitance circuit C' and the inductor L form a parallel connection circuit, a low-voltage capacitor bank circuit is connected into a loop of a low-voltage side coil of a transformer T and a high-voltage side coil of the transformer T is connected with the inductor L in parallel so that the equivalent capacitance circuit can be formed, low-voltage capacitors, resistors and the thyristors are connected in series to form a branch circuit, a plurality of the branch circuits are connected in parallel to for