Discrimination of different DC faults near a converter end section consisting filter, smoothing reactor, and transmission line is not an easy task. The occurring in the AC can be easily distinguished, but internal near-side external are very similar, relay may cause false tripping. This work proposes method to distinguish section. inputs voltage signals at start filter. difference calculated gi...

Power transformer is one of the most important equipments in the electric system. Dissolved Gases Analysis is an important method in the diagnosis of internal fault of transformers. Because the signs and types of fault have complicated nonlinear relations, the traditional methods cannot exactly meet the requirements of engineer application. This paper proposes synthesis of relational grey incid...

Faults due to the incorrect functioning of the computation system, or the transmission errors of the internal data, could corrupt the output code stream of the Huffman encoder. In this paper, a fault detection method is proposed for the Huffman encoding system, which is implemented in the JPEG image compression standard [1]. The detection method based on the information input and the code strea...

Lossy channel systems (LCS’s) are systems of finite state automata that communicate via unreliable unbounded fifo channels. We propose a new probabilistic model for these systems, where losses of messages are seen as faults occurring with some given probability, and where the internal behavior of the system remains nondeterministic, giving rise to a reactive Markov chains semantics. We then inv...

Bond graph models of an electrical transformer including the nonlinear saturation are presented. These models determine the relation between self and mutual inductances, and the leakage and magnetizing inductances of power transformers with two and three windings using the properties of a bond graph. The modelling and analysis using this methodology to three phase power transformers or transfor...

Short-circuit fault and local demagnetization faults are two common types of permanent-magnet machines, aiming to improve the reliability multi-phase PM machines in safety-critical applications, a method distinguish these kinds six-phase interior is proposed. The voltage characteristics synchronous frame short-circuit investigated, influences load current internal power factor angle on harmonic...

The ObjectAgent system is being developed to create a robust software architecture for autonomous control of complex systems. Agents are used to implement all of the software functionality and communicate through simplified natural language messages. These agents have a set of basic survival skills that monitor for internal software faults, providing low-level fault detection and recovery. High...

Once a power system is established it is necessary to protect it from faults (whether internal or external). So we use some protecting and sensing device like circuit breakers, Relays, Fuses etc. Circuit breaker is a mechanical device capable of making, carrying and breaking currents under normal circuit conditions and also making, carrying for a specified time. This paper represents informatio...

CMOS data latches used in critical applications must be immune to soft errors such as single event upsets. Existing designs protect the stored data against errors in the internal nodes, but may be vulnerable to transient faults in the control and data lines. The problem becomes more severe as feature sizes decrease. In this paper, we enhance the Dual Interlocked Storage Cell (DICE) to withstand...