METHOD FOR MEASURING HIGHER HARMONIC CHARACTERISTIC

摘要

PROBLEM TO BE SOLVED: To easily measure load characteristics on the inter-order harmonics of the noticed load of an objective feeder and the whole remaining load by injecting the current of inter-order harmonics into the objective feeder led out of a transformer station. SOLUTION: Either one of a plurality of loads 6Aa, 6Ab connected to the objective feeder 5A led out of the transformer station is made a noticed load, a current of inter-order harmonics is injected into the feeder 5A from the upper reaches side. The voltage and current of inter-order harmonics upstream of the respective loads 6Aa, 6Ab of the feeder 5A are measured to obtain a load characteristic on the inter-order harmonics of the whole feeder 5A. The current and voltage of inter-order harmonics flowing into the noticed load 6Aa are measured to obtain a load characteristic on the inter-order harmonics of the noticed load 6Aa. The load characteristic on the inter-order harmonics of the whole remaining load other than the noticed load 6Aa of the feeder 5A is obtained from the load characteristic on the inter-order harmonics of the whole feeder 5A and the load characteristic on the inter-order harmonics of the noticed load 6Aa.