| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a single operation detection device that prevents mutual interference between the single operation detection devices caused by the application of a disturbance signal generated by the synchronization of the devices, without the need for a synchronized signal line, and as a result, can detect single operation, and to provide a single operation detection method and a system linkage system. <P>SOLUTION: The system linkage system 1 comprises a plurality of distributed power supplies 3 that are linked to a system power supply 2 and operate it, and a plurality of the single operation detection devices 10 that are arranged at each distributed power supply and detect the single operations. The system linkage system parallel-operates the plurality of distributed power supplies by making them linked to the system power supply. Each of the single operation detection devices comprises: a system monitoring part 13 that detects a system voltage necessary for generating a system signal synchronized with the phase of the system voltage, and detects a system voltage, a frequency, a phase and a harmonic component that are necessary for detecting the single operation; an external synchronized signal receiving part 16 that receives an external synchronized signal from a common signal source 20; an internal synchronized signal generation part 17 that generates an intern synchronized signal on the basis of the system signal and the external synchronized signal; a disturbance signal generation part 12 that applies the disturbance signal to the system voltage on the basis of the internal synchronized signal; and a single operation determination part 14 that detects the disturbance signal at a system linkage point X, and determines the single operation on the basis of the detection result. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
