Distance measurement over PLC for dynamic grid mapping of smart micro grids

Optimization of currents injected by distributed energy sources (DESs) in micro grids may yield a significant reduction of the operating cost of the micro grid. It has been shown that optimization is greatly simplified if an estimate of the physical distance between DESs is available but this requires an adequate measuring and communication infrastructure making the micro grid smart. In this paper we propose to integrate communication and measuring by using a power line communication (PLC) infrastructure and estimating the distance by measuring the time of arrival (ToA) of the signals in PLC links among the DESs. We revise existing techniques for ToA estimate and apply them on realistic PLC scenarios. Moreover, we propose a new version of energy-base ToA measurement that performs close to optimal approach while having a significantly lower complexity

[1]  F. Blaabjerg,et al.  A digital controlled PV-inverter with grid impedance estimation for ENS detection , 2005, IEEE Transactions on Power Electronics.

[2]  Umberto Mengali,et al.  Energy-Based TOA Estimation , 2008, IEEE Transactions on Wireless Communications.

[3]  Robert A. Scholtz,et al.  Ranging in a dense multipath environment using an UWB radio link , 2002, IEEE J. Sel. Areas Commun..

[4]  Anna Scaglione,et al.  Power Line Communications and the Smart Grid , 2010, 2010 First IEEE International Conference on Smart Grid Communications.

[5]  Stefano Galli,et al.  G.hn: The new ITU-T home networking standard , 2009, IEEE Communications Magazine.

[6]  Andrea Zanella,et al.  Experimental comparison of RSSI-based localization algorithms for indoor wireless sensor networks , 2008, REALWSN '08.

[7]  E. Ortjohann,et al.  Supervisory control and energy management of an inverter-based modular smart grid , 2009, 2009 IEEE/PES Power Systems Conference and Exposition.

[8]  S. Gezici,et al.  Ranging in the IEEE 802.15.4a Standard , 2006, 2006 IEEE Annual Wireless and Microwave Technology Conference.

[9]  Frede Blaabjerg,et al.  On-line grid impedance estimation based on harmonic injection for grid-connected PV inverter , 2007, 2007 IEEE International Symposium on Industrial Electronics.

[10]  Andrea M. Tonello,et al.  Wideband Impulse Modulation and Receiver Algorithms for Multiuser Power Line Communications , 2007, EURASIP J. Adv. Signal Process..

[11]  P.J.M. Heskes,et al.  Harmonic interaction between a large number of distributed power inverters and the distribution network , 2004, IEEE Transactions on Power Electronics.

[12]  Moe Z. Win,et al.  Time of Arrival Estimation for UWB Localizers in Realistic Environments , 2006, EURASIP J. Adv. Signal Process..

[13]  G.B. Giannakis,et al.  Localization via ultra-wideband radios: a look at positioning aspects for future sensor networks , 2005, IEEE Signal Processing Magazine.

[14]  Harri Saarnisaari.  ML time delay estimation in a multipath channel , 1996, Proceedings of ISSSTA'95 International Symposium on Spread Spectrum Techniques and Applications.

[15]  Ismail Güvenç,et al.  Threshold selection for UWB TOA estimation based on kurtosis analysis , 2005, IEEE Communications Letters.

[16]  J. Driesen,et al.  Distributed generation: challenges and possible solutions , 2006, 2006 IEEE Power Engineering Society General Meeting.

[17]  Paolo Mattavelli,et al.  Optimization of micro-grid operation by dynamic grid mapping and token ring control , 2011, Proceedings of the 2011 14th European Conference on Power Electronics and Applications.

[18]  Moe Z. Win,et al.  Ranging With Ultrawide Bandwidth Signals in Multipath Environments , 2009, Proceedings of the IEEE.

[19]  Stefano Galli,et al.  Recent Developments in the Standardization of Power Line Communications within the IEEE , 2008, IEEE Communications Magazine.

[20]  John G. Proakis,et al.  Digital Communications , 1983 .

[21]  Klaus Dostert,et al.  A multipath model for the powerline channel , 2002, IEEE Trans. Commun..

[22]  Rodney A. Kennedy,et al.  Cramér-Rao Lower Bounds for the Synchronization of UWB Signals , 2005, EURASIP J. Adv. Signal Process..

[23]  Abbas Jamalipour,et al.  Wireless communications , 2005, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[24]  Paolo Mattavelli,et al.  Distribution loss minimization by token ring control of power electronic interfaces in residential micro-grids , 2010, 2010 IEEE International Symposium on Industrial Electronics.