This paper reviews different approaches for unbalanced load flow analysis within a distribution network, especially in a microgrid (MG). Models of untransposed distribution lines and unbalanced loads are considered for each methodology, as these are common in a MG scenario. Various commercial software packages are also investigated and assessed in terms of solving the power flow of the MGs and ...

The DASUD (Diffusion Algorithm Searching Unbalanced Domains) algorithm belongs to the nearestneighbours class and operates in a diffusion scheme where a processor balances its load with all its neighbours. DASUD detects unbalanced domains and performs local exchange of load between processors to achieve global balancing. The DASUD algorithm has been evaluated by comparison with another well-kno...

Two mismatch functions (power or current) and three coordinates (polar, Cartesian and complex form) result in six versions of the Newton–Raphson method for the solution of power flow problems. In this paper, five new versions of the Newton power flow method developed for single-phase problems in our previous paper are extended to three-phase power flow problems. Mathematical models of the load,...

When a three-phase induction generator (IG) supplies unbalanced loads, its terminal voltages and line currents are also unbalanced, which may cause the IG to overheat and need to be derated. A single-phase loaded self-excited induction generator (SEIG) works under most unfavorable load unbalance conditions. This paper proposes a three-capacitor circuit scheme and a method to find the values of ...

Two mismatch functions (power or current) and three coordinates (polar, Cartesian and complex form) result in six versions of the Newton–Raphson method for the solution of power flow problems. In this paper, five new versions of the Newton power flow method developed for single-phase problems in our previous paper are extended to three-phase power flow problems. Mathematical models of the load,...

We examine the effects of meta-level-communication in the DSRAP (Distributed Sequential Resource Allocation Problem). In DSRAP, independent tasks are categorized into different types, where each task belonging to a particular task type shares a known distribution of task arrivals, durations, reward rates, maximum waiting times, and resource demands. We first look at a single task type DSRAP (SD...

AbstractThe dynamic voltage restorer (DVR) is a series connected device for mitigating voltage sag/This paper presents with feed forward pre-sag/swell voltage control method to regulate the output voltage of pulse width modulated (PWM) voltage source converter (VSC). The proposed controller maintains a constant load voltage under the multiple balanced/unbalanced dynamic PQ disturbances. The pro...

Effective utilization of limited power resources by the sensors is pre-eminent to the Wireless Sensor Networks. Organizing the network into balanced clusters based on assigning equal number of sensors to each cluster may have the consequence of unbalanced load on the cluster heads. By-product of this is unbalanced consumption of the energy by the nodes which leads to minimization of network lif...

Effect of load variation on network reconfiguration and service restoration plans in balanced and unbalanced distribution systems is studied. Comprehensive survey of the conceptual aspect as well as published algorithms for distribution network reconfiguration is presented. Different reconfiguration networks and scenarios are discussed. Results showed the effectiveness of building restoration p...

This paper first presents a simple control technique for active filters to compensate current harmonics and reactive power of nonlinear loads. This method is usable for both single –phase and three –phase systems. Then a new method for load balancing and reactive power compensation for unbalanced sinusoidal load currents is presented. Finally by combination of two methods an active filter contr...