To improve the use of lithium-ion batteries in electric vehicle (EV) applications, evaluations and comparisons of different equivalent circuit models are presented in this paper. Based on an analysis of the traditional lithium-ion battery equivalent circuit models such as the Rint, RC, Thevenin and PNGV models, an improved Thevenin model, named dual polarization (DP) model, is put forward by ad...

Maloperation of conventional relays is becoming prevalent due to ever increase in complexity of conventional power grids. They are dominant during power system contingencies like power swing, load encroachment, voltage instability, unbalanced loading, etc. In these situations, adaptive supervised wide-area backup protection (ASWABP) plays a major role in enhancing the power system reliability. ...

As electricity demand continues to grow and renewable energy increases its penetration in the power grid, realtime state tracking becomes essential for system monitoring and control. Recent developments in phasor technology make realtime dynamic state estimation possible with high-speed timesynchronized data provided by synchronized Phasor Measurement Units (PMU). In this paper we present a two...

Using thermal inertia in district heating systems (DHSs) to improve the dispatch flexibility and economy of integrated heat electricity (IHESs) is a research hotspot difficulty. In most existing studies, partial differential equations (PDEs) are approximated by discrete-time models, making it difficult accurately describe continuous dynamic processes. this paper, we propose novel generalized ph...

This paper proposes a novel approach for detecting the topology of distribution networks based on the analysis of time series measurements. The time-based analysis approach draws on data from high-precision phasor measurement units (PMUs or synchrophasors) for distribution systems. A key fact is that timeseries data taken from a dynamic system show specific patterns regarding state transitions ...

The phasor measurement unit (PMU) is considered to be one of the most important measuring devices in the future of power systems. The distinction comes from its unique ability to provide synchronized phasor measurements of voltages and currents from widely dispersed locations in an electric power grid. This paper proposes an algorithm based on the clustering techniques for solving the optimal P...

N O V E M B E R / D E C E M B E R 2 0 1 4 www.insidegnss.com Efficient power transmission and distribution would benefit from synchronized near–real-time measurements of voltage and current phasors at widely dispersed locations in an electric power grid. Such measurements also could enable effective realtime system monitoring and control, which are considered to be the key to preventing wide-sc...