The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In paper, a solution for the integration of a home energy management system (HEMS) to be a part of an utility LVDC distribution system is introduced. The considered LVDC network comprise network-level battery energy storage system (BESS), public DC distribution system with a single connection point to medium-voltage AC network and multiple prosumer customers. The usage of the BESS is multi-objective...
Distributed generation (DG) units are widely used in modern power grids. The sub-grid islanding condition associated with a loss of mains (LoM) in such grids is a topical safety issue. In this paper, we discuss potential anti-islanding solutions, analyze the physical constraints, propose a power line communication (PLC) based concept, and perform its sensitivity analysis. The concept description covers...
Islanding condition in an electricity distribution grid occurs when a distributed generator (DG) continues to power parts of the grid, when connection with the power utility is lost. This situation can cause severe and fatal personal injuries, equipment damage, and power quality degradation. In this paper, communication-based anti-islanding, that is, a loss-of-mains (LoM) protection system for electricity...
Loss-of-mains (LoM) protection is crucial in modern smart grids (SGs), where the number of distributed generation (DG) units has increased making the grids more complex. An LoM situation means that the DG unit(s) is/are still supplying the grid while the connection to the supplying electric power distribution grid is off. This can cause fatal injuries to humans and damages to the equipment. A power...
It has been shown that high-frequency (HF) band power line communication (PLC), that is, the HomePlug 1.0 specification, is feasible for a low-voltage direct current (LVDC) smart grid (SG) system, where power electronics and low-voltage DC are applied to the electricity distribution. In this paper, the applicability of the latest HomePlug specification, Green PHY (GP), is studied within the LVDC PLC...
This paper concentrates on the effects of d.c. mains voltage level selection on earthing and protection of the low voltage direct current (LVDC) distribution systems. Among the low voltage range the possibilities are to go up to 1500 VDC in unipolar and ±750 VDC in bipolar LVDC system. Voltage level selection is one of the main tasks in LVDC system design process as it directly affects the electric...
Communication is needed in modern smart grids (SGs) for instance in load control, automatic metering infrastructure (AMI), and grid monitoring and protection. Power line communication (PLC) is studied as the data transmission solution for a low-voltage direct current (LVDC) electricity distribution system in the DC grid; channel analysis, noise in the channel, and the performance of both the narrowband...
It has been shown that high-frequency (HF) band power line communication (PLC) is a feasible data transmission method for a smart grid concept, namely for a low-voltage direct current (LVDC) electricity distribution system. However, because of the signal attenuation, the communication distances in the LVDC grid are limited with the HF band PLC. Hence, the new narrowband (NB) PLC should also be tested...
<?Pub Dtl?>This paper addresses common-mode (CM) and radio frequency (RF) electromagnetic interferences (EMI) in a converter-fed low-voltage direct current (LVDC) distribution research network. The LVDC distribution is a novel approach to public electricity distribution, and a research site is set up to enable comprehensive studies concerning the LVDC distribution. Because the customers in the...
It has been shown that high-frequency (HF) band power-line communication (PLC) is a suitable data transmission method for the smart grid concept, namely a low-voltage direct current (LVDC) distribution system. In this paper, the PLC channel analysis in the LVDC system is continued with a detailed noise analysis. Noise signals from the terminals of PLC couplers are measured in the time domain. Noise...
It has been shown that power line communication (PLC) in the high frequency (HF) band is a feasible data transmission method for a future smart grid concept — a low-voltage direct current (LVDC) distribution system. Furthermore, PLC is proposed as a basis of the data network architecture in the LVDC system. In the analysis of the communication channel characteristics and the design of the communication...
In smart grids, a communication network with bidirectional data transmission between network components is required for functionalities, such as grid monitoring, control and protection. These functionalities set different requirements for communication. This paper focuses on the use of power-line communication (PLC) as a data transmission method for monitoring, control and protection functions in...
It has been shown that power line communication (PLC) is a feasible method for data transmission between a low-voltage (LV) motor and a frequency converter through the power cable. In this paper, attenuation and noise power spectrum of the communication channel are analyzed. The analysis is based on a laboratory test setup, laboratory measurements, simulation models, and known power spectral density...
In this paper, a power line data transmission link based on Software-Defined Radio (GNU Radio) for motor cable communication between an electrical motor and a frequency converter is developed and tested. The test environment includes a frequency converter, an electrical motor (2.2 kW), and a 90-meter-long motor power cable. Two differential phase shift keying (DPSK) modulations, DBPSK and DQPSK, are...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.