Guobing Song

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This paper presents a method for locating faults on HVDC transmission lines using two terminal data. Different from those based on the traveling wave principle, the new fault-location algorithm can use any section of the postfault data to locate faults. The proposed method is developed based on the distributed parameter line model in which the voltage(More)
Based on the ratio of the sum of the fault component voltage phasors across the two terminals in the transmission line to the sum of the current phasors through the same line, which is defined as fault component integrated impedance in this paper, a new transmission-line pilot protection principle is proposed. When an external fault occurs, the amplitude of(More)
Jiale Suonan, Xuyang Deng, Guobing Song Department of Electrical Engineering Xi’an Jiaotong University Xi’an, China Abstract—This paper describes a novel principle for protecting busbars. The principle uses the ratio between the fault component voltage and the fault component differential current of the busbar to detect faults, which is defined as the(More)
This paper analyzes the topology and faults characteristics of collecting power lines in PMSG wind farm. In order to solve the problems caused by traditional three paragraph overcurrent protection used in collecting power lines, a novel inverse-time overcurrent protection method is proposed based on fuses' protection features and PMSG's (permanent magnetic(More)
Single-phase adaptive reclosure (SPAR) schemes applied to transmission lines have been an effective method to improve the stability of power system. Attractive techniques have been proposed for SPAR schemes based on the tripped fault-phase voltage. But for transmission lines with shunt reactors, the voltage is so minor that the error of voltage transformer(More)
For distance protection, the measurement accuracy at the boundary of protective zone is the most important issue to distinguish internal faults from external faults correctly. Since the line parameters depend strongly on the frequencies, in order to obtain high accuracy, it should be considered during initial fault transients generally associated with(More)
HVDC transmission systems have found wide applications in modern power systems and have produced a useful influence on the stability and security of power systems. The currently used protections for HVDC systems operate on the principles which have poor reliability and inadequate sensitivity. To overcome these problems, this paper presents a new whole-line(More)
Traditional distance protections mainly use a lumped parameter model and perform poorly under high-resistance ground fault and/or for long-distance transmission line. In order to overcome the defects, this paper presents a new distance protection method, which is developed based on the distributed-parameter transmission-line model and can distinguish(More)
A novel pilot protection principle for VSC-HVDC cable lines based on fault component current is presented in this paper. In the transient process of cable line, if a fault occurs over the cable line, the current measured at both convert stations would have the same changing direction and the sign of the fault component current at both convert stations are(More)
In this paper, an accurate fault location algorithm based on parameter identification using single-ended data is presented. It is inferred from the differential equations of fault state network and fault component network based on the R-L transmission lines model. And it takes the resistance and inductance of the system behind the fault point, the fault(More)