On the Immunity of Data Acquisition Systems Used in Power Systems
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2016, Vol 40, Issue 40
Abstract
The paper deals with some tests regarding the immunity for radiated emissions and compliance with international standards for electromagnetic compatibility (EMC) measurements for an industrial data acquisition system (DAS) used in power systems. The behavior of the DAS, when functioning near electromagnetic disturbance sources, is studied. The goal is to test its robustness in similar conditions as those encountered in its normal environment. It is known that multiple factors may affect the accuracy of data acquired by DAS. The Equipment Under Test (EUT), witch in this case is represented by DAS is tested for immunity in a specialized enclosure (GTEM Cell). The immunity based on the analysis of the influences of an electric field with constant magnitude and variable frequency in the range of 80 MHz…1 GHz is studied. After analyzing the initial tests results, partial and, afterwards, full shielding of the EUT’s case is performed in order to remove the EM influence. The tests’ results drive to the conclusion that it is necessary to design and build an enclosure from conductive material for the DAS. After the implementation of the measures, the EUT passed the tests concerning the immunity. The GTEM Cell construction, GTEM model, generation and distribution of electric and magnetic field inside the GTEM Cell, equipment under test (EUT), radiated emission measurement scheme, EMC standards for GTEM Cell, are exposed.
Authors and Affiliations
Livia-Andreea Dina, ILeana-Diana Nicolae, Petre-Marian Nicolae, Dorina-Mioara Purcaru
About the Analytical Methods Applying for Fault Diagnosis of the Static Converters from the Electric Locomotive
In this paper, the results of the monitoring and diagnosis system based on the analytical methods of the auxiliary ventilation service of the electric locomotive which is supplied from the static converter are pres...
Energetic Analysis of the Drying Process of Cur-rent Transformers from 110 kV Ciungetu Power Station
Currently, at company Hidroserv Râmnicu Vâlcea, the drying of current transformers used in power transformer stations is done by a combination between induction and conduction heating at the frequency of 50 Hz. Obviously...
Modeling and Torque Ripple Control in Faulty SPMSM
This paper presents a model of a Surface Permanent Magnet Synchronous Motor which can be used in a faulty case and a torque ripple control approach developed to be applied if the faulty case is detected. Two faulty cases...
Simulation and Implementation of Sensorless Control Using Estimators in Electric Drives with HighDynamic
In this article we’ll tackle the control of electric drive with high dynamic, with rapid changes in torque and speed, where the control strategy is FOC (Field Oriented Control). In the surface mining industry, from which...
Practical Considerations Concerning Conducted Electromagnetic Interferences for a PC
The paper refers to theoretical and practical considerations concerning conducted electromagnetic interferences (IEM). The standards used for measuring of conducted emissions (CE) are presented and discussed. FCC and...