For any electric power system, it is crucial to guarantee a reliable performance of its High Voltage Circuit Breaker (HCVB). Determining when the HCVB needs maintenance is an important and non-trivial problem, since these devices are used over extensive periods of time. In this paper, we propose the use of data mining techniques in order to predict the need of maintenance. In the corresponding ...

Design and construction of a stable current supply with protection circuits are described. The reported circuit provides a high-stable and high-level current variable from 0.5-1.2 A with the protect ion circuits to prevent over load current, voltage and off-range temperature operation. A detailed analysis of the circuit parameters is given and the time behaviors of the load voltage/current and ...

A new output structure for class E power amplifier (PA) is proposed in this paper. A series LC resonator circuit, tuned near the second harmonic of the operating frequency is added to the output circuit. This resonator causes low impedance at the second harmonic. The output circuit is designed to shape the switch voltage of the class E amplifier and lower the voltage stress of the transistor. T...

Abstract The support of renewable energy to the bus voltage during grid fault period will cause failure action backup automatic switch (BPAS). Moreover, improper coordination and source supply lines in process BPAS operation lead asynchronous close a circuit breaker, which seriously threatens stable power system. To solve above problems, an optimal strategy applied remote is proposed this paper...

We describe here how a network of oscillators can perform neural computations. In particular, it shown how the connectivity within the network can be created to memorize data in terms of phase relations between synchronized states. The memorized states are extracted through correlation calculations. The influence of noise on the system is discussed. 1 Electronic Circuit Models of Neural Activit...

It is effective to open the bus-coupler circuit breaker in case of a short-circuit fault. A fast vacuum (FVCB) an ideal due its high velocity. The objective this study was develop and test 252 kV/2500 A-40 kA multi-break FVCB. kV FVCB contained 12 units. Each phase consisted four units connected series. unit had electromagnetic repulsion mechanism with average opening velocity reaching 6.5 m/s....