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This paper presents a new hardware design for a surveillance and controling system of a medium voltage withdrawable cell. The proposed design is based on a development board- Wilke Technology, at it is core being the Tiny Tiger 2 Multitasking Computer microcontroller with memory capacities of 2 MByte or 4 MByte FLASH for program and data, plus 1 MByte SRAM with Backup Input. In this paper I made a...
Pro rata allocation method based probabilistic network usage computing is presented within the paper. A software tool has been developed in Matlab environment. It contains a part dedicated to probabilistic power flow computing and another part corresponding to network usage allocated to generating units and consumers. The Romanian Power System is used as case study. Useful results have been provided.
Transmission corridors are considered to be an optimal integration solution into a common electricity market. Power exchanges between systems are achieved through another interconnected system and may cause congestion in transmission networks. This paper is focusing on transmission cost allocation to market participants in case of indirect power exchanges through an interconnected power system. Case...
This paper presents an on-line system used for monitoring power quality, transferred from producers up to distributors on the Romanian energy market. The system allow the analysis of methods and means for making all maintenance works inside transformer power stations, belonging to TRANSELECTRICA S.A., the National Company for Power Transport, at high efficiency. Monitoring the power quality indicators,...
For providing undisturbed operation measures between fiber optic cable and OHL mounted on the same poles it is necessary to standardize them accordind to an European level. Currently, these standards are outdated; technological development has changed the structure design of fiber optic cables, making them much lighter. Considering the structural changes, the present situation in Romania is described...
The paper presents a monitoring system for power quality and environment power facilities impact assessment. The high voltage installations' electromagnetic pollution is considered primarily within the analysis. The experimental results relate to substations within the Romanian Power Grid Company Transelectrica, Sibiu Subsidiary. The measurements have been performed for electric and magnetic field...
Capacitive shunt compensation of a three phase power distribution network is usually done to improve the voltage level in the network buses and / or to reduce the active power losses. Most often this compensation could be made also for network load balancing, which will also have a positive effect on voltage quality. For this, a shunt unbalance capacitive compensation is necessary. The compensation...
The protecting systems against overvoltages produced all over the world make more and more use of variable resistors based on metal oxides known under the name of varistors as they present a series of advantages when compared with other similar protecting systems. In this respect, the paper presents, besides a short comparative analysis of the protecting system, a Romanian concept concerning the realization...
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