| 摘要 |
A method and a device for estimating the electric load composition of a customer in real time are provided to present a modeling for estimating the composition rate of a customer non-linear electric load having a distorted current signal and to apply a conjugate gradient method or a Kalman filter algorithm for evaluating the load composition. A method for estimating the electric load composition of a customer in real time comprises steps for measuring the waveform of current(i1,i2,~ip-1,ip) flowing in plural loads of the customer by using a sensor and the waveform of the entire current flowing in an input stage(100,100'); deriving the final model function by modeling the electric load composition on the basis of the measured current waveform, in order to determine the electric load composition rate of the customer(110); and estimating the electric load composition rate of the customer by calculating a load coefficient(k) from the modeled function by applying an optimizing method(120,130,140). |
