In this paper a recent application is showed that uses Internet as a supervision tool and remote control of a network of radio-TV relay stations to offer a better service to future clients. The relay stations network occupies a region of about 30.000 km. The operator of this telecommunications network counts with a SCADA system which permits to the operator monitoring and control of the whole n...

Many countries and administrative domains exploit control over their communication infrastructure to censor online content. This paper presents the design, implementation and evaluation ofKaleidoscope, a peer-to-peer system of relays that enables users within a censored domain to access blocked content. The main challenge facing Kaleidoscope is to resist the censor’s efforts to block the circum...

Maximum availability is essential in the power generation and transmission sector. Faults in transmission lines, substations etc. can cause very serious damage. Therefore it is important to have means to examine each type of fault and the relay performance for different point on wave instant in detail using a relay testing simulator, in order to detect malfunction of the relay. “Point on wave f...

A performance assessment procedure for single-input-single-output (SISO) and multi-input-multi-output (MIMO) systems based on modified relay feedback test is proposed in this paper. The well-known robustness measurements, gain and phase margins, are used to assess the performance of the control systems. The proposed method can on-line estimate the gain and phase margins for systems with both un...

Current inversion condition leads to incorrect operation of current based directional relay in power system with series compensated device. Application of the intelligent system for fault direction classification has been suggested in this paper. A new current directional protection scheme based on intelligent classifier is proposed for the series compensated line. The proposed classifier uses ...

Electrical load control and monitoring system is a device designed to monitor electricity consumption. The process of electric loads uses power sensor model ACS712 which connected relay module supply stop using if consumption exceeds predetermined capacity 1000 watts so that energy can be carried out. microcontroller used the NodeMCU esp8266 functions as main will linked blynk application with ...