Browsing by Author "Arrinda, A."
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Item Characterization of non-intentional emissions from distributed energy resources up to 500 kHz: A case study in Spain: A case study in Spain(2019-02) Fernandez, I.; Uribe-Pérez, N.; Eizmendi, I.; Angulo, I.; de la Vega, D.; Arrinda, A.; Arzuaga, T.; Oficina de Proyectos DigitalNarrow Band Power Line Communications (NB-PLC) systems are currently used for smart metering and power quality monitoring as a part of the Smart Grid (SG) concept. However, non-intentional emissions generated by the devices connected to the grid may sometimes disturb the communications and isolate metering equipment. Though some research works have been recently developed to characterize these emissions, most of them have been limited to frequencies below 150 kHz and they are mainly focused on in-house electronic appliances and lightning devices. As NB-PLC can also be allocated in higher frequencies up to 500 kHz, there is still a lack of analysis in this frequency range, especially for emissions from Distributed Energy Resources (DERs). The identification and characterization of the emissions is essential to develop solutions that avoid a negative impact on the proper performance of NB-PLC. In this work, the non-intentional emissions of different types of DERs composing a representative microgrid have been measured in the 35–500 kHz frequency range and analyzed both in time and frequency domains. Different working conditions and coupling and commutation procedures to mains are considered in the analysis. Results are then compared to the limits recommended by regulatory bodies for spurious emissions from communication systems in this frequency band, as no specific limits for DERs have been established. Field measurements show clear differences in the characteristics of non-intentional emissions for different devices, working conditions and coupling procedures and for frequencies below and above 150 kHz. Results of this study demonstrate that a further characterization of the potential emissions from the different types of DERs connected to the grid is required in order to guarantee current and future applications based on NB-PLC.Item Experimental set-up to study power quality in single-phase split-phase distribution systems(2023-07) Vicente, I.; Arrinda, A.; Rodríguez-Seco, J. E.; Piyasinghe, L.; POWER SYSTEMSPower Quality (PQ) has been an important topic since the creation of distribution systems. The deployment of the Advanced Metering Infrastructure (AMI) provided an important tool to measure the PQ of the electric power in the consumption points. One of the smallest secondary distribution systems in terms of power consumption is the single-phase split-phase system (120 V/240 V) that countries such as the United States, Canada, and some countries of central and south America have. Due to its size, this secondary distribution system is more prone to PQ issues. To that end, an experimental set-up was built by the authors so the distribution system from the Low Voltage (LV) transformer to the final appliances of the different houses was emulated. The aim is to capture the currents and voltages observed by the smart meter located at the entrance of the house and look for the different responses. A combination of real and dummy loads was installed in the set-up, so real noise could also be simulated. The set-up was totally automated by an industrial controller and relays, and it produced a very detailed dataset that could be used for multiple purposes.Item MIMO performance of the next generation DVB-T(2009) Atanes, P.; Arrinda, A.; Prieto, G.; Angueira, P.; Vélez, M. M.; Prieto, P.; POWERTRAINThis paper analyses the performance of a DTT (Digital Terrestrial Television) broadcasting system that includes MIMO-OFDM techniques. The benefits of these techniques are studied comparing the results for different MIMO 2×2 (Multiple Input Multiple Output), MISO 2×1 (Multiple Input Single Output) and SISO (Single Input Single Output) system configurations. Different propagation channel models and configurations are considered for each diversity scheme. This study has been carried out in the context of development of the next generation DVB-T, called DVB-T2.Item A review on measurement techniques for non-intentional emissions above 2 kHz(Institute of Electrical and Electronics Engineers Inc., 2016-07-14) Angulo, I.; Arrinda, A.; Fernandez, I.; Uribe-Perez, N.; Arechalde, I.; Hernandez, L.; Tecnalia Research & InnovationThis paper will provide a review on measurement techniques and other considerations for non-intentional conducted emission measurements above 2 kHz, as a first step to contribute to the standardization of emission requirements in this frequency band.