The doubly fed induction generator (DFIG) is one of the most popular technologies used in wind power systems. With the growing use of DFIGs and increasing power system dependence on them in recent years, protecting of these generators against internal faults is more considered. Loss of excitation (LOE) event is among the most frequent failures in electric generators. However, LOE detection stud...

Fault diagnosis of steam turbine is essential to predict further development and to anticipate it by taking appropriate measures. Fault diagnosis of modern industrial power plants by human inspection is time-consuming and expensive as well as fault diagnostic system modelling based on conventional mathematical tools is not suitable for ill defined and uncertain system. Therefore, it is necessar...

A method for power systems alarm handling and fault location is presented. The method employs artificial neural network classifiers whose inputs are alarms from relays and circuit breakers operation, while the outputs identify the faulted system component. Fault location is determined even in cases of protection system failures or in the presence of noisy data. The employed methodology is illus...

Because of high reliability and other characteristics, High Voltage Direct Current (HVDC) Light system had important applications in power transmission system. In order to ensure its operation safety, the fault diagnosis technologies based on observer were researched. The model of HVDC light system was introduced, and the types and characteristics of the system were analyzed. Several common fau...

Transformation equipment conditional monitoring technology is the key technology of intelligent substation construction, and it is also one of the core content of intelligent substation construction. Guangxi power grid has constructed a sensor network based variable and integrated electrical equipment on-line monitoring and evaluation platform. In the platform, through the equipment fault diagn...

this paper presents a new damping controller design based on fuzzy wavelet neural network (fwnn) to damp the multi-machine power system low frequency oscillations. the error between the desired system output and the output of control object is directly utilized to tune the network parameters. the orthogonal least square (ols) algorithm is used to purify the wavelets for each rule and determine ...