Poor control of the nuclear steam generator (SG) water level of pressurized Water Reactor can lead to frequent reactor shutdowns. In addition, the steam generator is a highly complex, nonlinear and time-varying system and its parameters vary with operating conditions. The dynamics of a nuclear steam generator is very different according to the power levels and changes as time goes on. Therefore...

This paper describes a method for obtaining the semantic representation for a syntax tree in Systemic Grammar (SG). A prototype implementation of this method the REVELATION1 semantic interpreter has been ldeveloped. It is derived from a SG generator foe a large subset of English GENESYS and is !thus, in contrast with most reversible grammars, fan interpreter based on a generator. A task decompo...

The synchronverter algorithm is a way to control switched mode power converter that connects DC energy source the AC grid. main features of this are frequency and voltage droops as well synthetic inertia, so inverter resembles synchronous generator (SG). Many versions have been proposed tested, but all share same “basic algorithm”, which based on equations SG. We analyze sensitivity output curr...

This paper presents the application of radial basis neural networks to the development of a novel method for the condition monitoring and fault diagnosis of synchronous generators. In the proposed scheme, flux linkage analysis is used to reach a decision. Probabilistic neural network (PNN) and discrete wavelet transform (DWT) are used in design of fault diagnosis system. PNN as main part of thi...

This paper offers novel non-linear control of a doubly fed induction generator (DFIG) and unified power flow controller (UPFC) for transient stability increment with energy function (TEF) sliding mode observer in system. First, the TEF technique is considered damping system synchronous (SG), DFIG, UPFC, then time-derivative signals are estimated by second-order observer. The importance issue em...

Abstract The large application of renewable energy generation (REG) has increased the risk cascading failures in power system. At same time REG also provides possibility new approaches for suppression such failures. However, capacity and position synchronous generator (SG) involved regulation limit speed (PRS) to overload line which is main cause failures, while PRS SG related shedding power. S...

This paper presents a novel impedance-based approach for out-of-step (OOS) protection of a synchronous generator. The most popular and commonly used approaches for detecting OOS conditions are based on the measurement of positive sequence impedance at relay location. However, FACTS devices change the measured impedance value and thus disrupt the performance of impedance-based relay function. In...

Synchronous generators are of two type’s salient pole type and round rotor type. The load angle curve of a cylindrical rotor synchronous machine comprises a single sine term only while in salient pole synchronous generators, power-angle characteristic has two terms. The first term is the fundamental component due to field excitation (the same as the cylindrical rotor) and the second term ...

Accurate and fast detection of faults is one the main concerns power systems for their operation productivity. In this paper, a robust dynamic fault filter presented synchronous generator (SG) characterized by highly non-linear model, having uncertainties perturbations both in state measurements. The so designed that residual signal against model uncertainties, process disturbances on hand sens...