INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH VOLUME 4, ISSUE 08, AUGUST 2015 ISSN 2277-8616 1 IJSTR©2015 www.ijstr.org Design And Modeling An Automated Digsilent Power System For Optimal New Load Locations Mohamed Saad, Mohd Ali Tofigh, Farah Zaheeda, Ahmed N AL-Masri, Nordin Bin Othman, Muhammad Irsyad, Ahmad Abbas, Erhab Youssef Abstract: The electric power utilities seek to take advantage of novel approaches to meet growing energy demand. Utilities are under pressure to evolve their classical topologies to increase the usage of distributed generation. Currently, the electrical power engineers in many regions of the world are implementing manual methods to measure power consumption for farther assessment of voltage violation. Such process proved to be time consuming, costly and inaccurate. Also, demand response is a grid management technique where retail or wholesale customers are requested either electronically or manually to reduce their load. Therefore, this paper aims to design and model an automated power system for optimal new load locations, using DPL (DIgSILENT Programming Language). This study is a diagnostic approach that assists system operator about any voltage violation cases that would happen during adding new load to the grid. The process of identifying the optimal bus bar location involves a complicated calculation of the power consumptions at each load bus As a result, the DPL program would consider all the IEEE 30 bus internal network's data then a load flow simulation will be executed. To add the new load to the first bus in the network. Therefore, the developed model will simulate the new load at each available bus bar in the network and generate three analytical reports for each case that captures the over/under voltage and the loading elements among the grid. Index Terms: DIgSILENT Power Factory, DIgSILENT Programming Language (DPL) , 30 bus IEEE, Power system, Load Flow Analysis, Power System ———————————————————— 1 INTRODUCTION The power software's is the next generation of power system analysis tools. Power software's provides the complete assessment of system security including all forms of stability by providing a complete tool set for power system planning and operational tools. In addition to rich modeling capabilities and leading-edge computational methods, the software is highly automated and can provide engineers with significant productivity improvements. An electric power system is a network of electrical components used to supply, transmit and use electric power [1]. DIgSILENT Power Factory is leading power system analysis software for generation, transmission, and distribution of power system. It combines reliable and flexible system modeling capabilities through integrating required functions with state of the algorithms and unique database concept [2]. Power engineers nowadays in many regions of the world are using manual ways to measure substations power consumption in the distribution part of power systems for the identification of buses connected to heavy loads. Such process proved to be time consuming, costly and inaccurate at times [3]. Therefore, the use of DIgSILENT in the design and modeling of an automated power system for optimal new load locations will allow the engineers to automatically identify the over/under and loading elements in the power grid, and identifies exactly the suitable bus that can carry the new load. Therefore, the main objective of the study is to design and model an automated power system for optimal new load locations, using DPL (DIgSILENT Programming Language). This study lies in the fact that it attempts to design a DIgSILENT PowerFactory smart grid related to the modeling, simulation and technical analysis of the IEEE 30 bus data as performances. Such a design will be a step forward toward replacing the manual ways currently practiced by some electrical power engineers to measure substations power consumption in the distribution part of power systems for the purpose of the identification of buses connected to heavy loads[4]. It promises to allow the engineers to automatically identify the high and low power consuming buses under a specific substation, and identifies exactly the suitable bus that can carry the new load. Such design and modeling is significant and represent a continuation of the new trend of designing customized DPL program of power software's for the management of power grids in the evolving power systems industry. 2 FROM CLASSICAL POWER SYSTEM TO SMART GRID The attempt to design a DIgSILENT Power Factory Power grid related to the modeling, simulation and technical analysis of the IEEE's actual data will allow the engineers to upgrade the classical power system from the ground to a smart grid inside the software to perform any kind of testing, analysis and simulation which will provide accurate and economical solutions since the system is under data handling, modeling capabilities and overall functionality replace a set of other power control software systems, thereby minimizing execution costs and training requirements[2][5]. 3 METHODOLOGY FOR THE IDENTIFICATION OF THE OPTIMAL NEW LOAD LOCATIONS Once the loads, active and reactive power injections and network parameters are defined, load flow analysis solves the bus voltages and phases, after which the branch power flow can be calculated. Generators and loads represent the boundary conditions of the solution. Mathematically, power flow requires a solution of a system of simultaneous nonlinear equations. However, with the continuous increase of power system scale, the dimension of load flow equations becomes _______________________  Faculty of information Science and Technology, Management and Science University, Shah Alam, Malaysia 40100  College of Computer Information Technology, American University in the Emirates, DIAC, Dubai, UAE  Faculty of Engineering, Helwan University, Helwan, Egypt