Distributed Generation Planning Strategy with Load Models in Radial Distribution System

Abstract

Abstract-This paper proposes a new approach for distributed generation (DG) planning from the perspective of a distribution company (disco). Optimal sizing and siting decisions for distributed generator is obtained through different approaches: Power loss minimization, System MVA minimization, System cost minimization and System Energy loss minimization. The methodology adopted permits the planner to decide optimal location and size of DG with compromise between Power loss, System MVA, System cost and System energy loss. Normally a constant power (real and reactive) load model is assumed in most of the studies. It is shown that load models can significantly affect the optimal location and sizing of DG resources in distribution systems. A comparative study of optimal location and size of distributed generator provided by installing DG resources with different type of loads models has been performed.

Distribution Network Reliability and Efficiency Enhancement Using Distributed Generation

“…Distributed Generation (DG) is the process of using a small scale modular technology to produce or generate electricity located or close to the end user. DG also is a method that helps to reduce the amount of power losses which occurs during transmission or distribution by generating the power very close to load centre or may be even in the same vicinity [6].…”

“…Some of the technologies that are employed for DG sources include photovoltaic cells, wind generation, combustion engines, fuel cells etc, depending on their sources that are available in the geographical area [7,8]. Usually, DGs are integrated with the existing distribution system and lot of studies is done to find out the best position to locate them as well as the size of DGs to produce utmost benefits [6,9]. The main characteristics that are considered for the identification of an optimal DG location and size are the minimization of transmission or distribution loss, maximization of supply reliability, maximization of profit of the distribution companies (DISCOs), etc [10].…”

Improving Reliability of Distribution System by Optimum Placement of DGs

“…Usually, DGs are attached with the already existing distribution system and lot of studies are performed to find out the best location and size of DGs to produce highest benefits [4]. The effect of placing a DG on network indices will be different based upon its type and location and (predict) load at the connection point [5].…”