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In 2009 the Transport System Operator of the Power Grid in Romania (CNTEE Transelectrica SA) has initiated several SMART GRID pilot projects to monitor and diagnose online the power stations and high voltage lines, as support for accurate decisions on operation and maintenance activities, respectively for intelligent asset management. In Romania, the technical conditions for the on-line OHL monitoring...
The paper introduces thermal buoyancy effects to experimental investigation of wind tunnel simulation on direct air-cooled condenser for a large power plant. In order to get thermal flow field of air-cooled tower, PIV experiments are carried out and recirculation ratio of each condition is calculated. Results show that the thermal flow field of the cooling tower has great influence on the recirculation...
With the development of intelligent power grid, an ultra-low power wireless monitoring platform applied on the tower is designed to improve the level of management and operation of transmission lines. Towers operating status and fault conditions could be monitored online by it. As a result of the level of 10mW power dissipation of MSP430 microcontroller and the Wake on Radio (WOR) Wireless communication...
The paper describes the design process of a wind turbine to be installed in extreme ambient conditions. In particular, a wind plant has been conceived for the very challenging conditions of the French-Italian Antarctic Base, located in the South Pole. Concordia Base has been built with the collaboration of Italian consortium PRNA, French Polar Institute IPEV and European Space Agency ESA. It is one...
The paper introduces thermal buoyancy effects to experimental investigation of wind tunnel simulation on direct air-cooled condenser for a large power plant. Recirculation ratio of each measuring point is calculated by measuring temperature at the inlet of fans and outlet of finned tubes under different velocities and wind direction angles. The influence of wind velocity and wind direction on recirculation...
The current-carrying capacity of overhead lines is dependent on weather conditions. Overhead lines can safely carry more than their rated capacity during periods of low ambient temperature or high wind speeds due to cooling effects. Dynamic line rating involves quantifying this additional capacity in real time as local weather conditions change. Increases in line rating due to high wind speeds are...
This paper describes the results of experiments made in the vicinity of EHV overhead lines to investigate sources of clouds of charged particles using simultaneously-recording arrays of electric field meters to measure direct electric fields produced under ion clouds. E-field measurements, made at one metre above ground level, are correlated with wind speed and direction, and with measurements from...
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