| 摘要 |
PROBLEM TO BE SOLVED: To enable repairing a power storing equipment and enable reactive power compensating operation, by continuing operation at the time of trouble of the power storing equipment, in a power converting system wherein a self- exciting power converter and the power storing equipment are combined. SOLUTION: A power converting system for interconnected system consists of the following; a self-exciting type power converter 6 connected with a power system 1, a capacitor 7 and a power storing equipment 9 which are connected in parallel with the DC side of the self-excitation type power converter 6, and a control equipment 4 generating gate pulses which are applied to each self arc-suppressing element of the power converter. A switch 8 is installed between the capacitor and the power storing equipment, and a DC voltage Ec of the power converter is compared with a previously set reference voltage Emin . When the DC voltage Ec drops lower than the reference voltage, the power storing equipment is judged to be trouble, the power storing equipment is cut off by opening the switch, and operation is continued by supplying and absorbing reactive power to and from the power system. |
