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Based on the existing active islanding detection method known as power disturbance, an adaptive power disturbance (APD) method is proposed. This method calculates the minimum power disturbance value required to effect islanding detection based on the relationship between the voltage at the point of common coupling (PCC) after islanding and the power generated by the inverter. The conventional passive...
Distributed generation (DG) technology has been rapidly developing and the DG penetration level is becoming higher and higher in power system distribution network in recent years. Due to the access of multiple distributed generators, the traditional instantaneous overcurrent protection may fail to coordinate with each other. In order to solve this problem, this paper studies the fault characteristics...
This paper presents a simulation of regenerative braking in DC railway system. The model of DC locomotive with DC-AC PWM convertor has been proposed which is according to Beijing No.5 Line Subway train. Based on the data of a practical train, this paper has made calculation of regenerative braking currents. The calculation has verified the correctness of the simulation model.
This paper presents a single phase earth fault location technique for distribution automation in a non-effectively earthed network based on the transient current correlation. By comparing the similarities of zero mode transient current at each section of faulty feeder, which is measured by FTUs (Feeder Terminal Units), the faulty section can be identified. The correlation coefficient between the transient...
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