Optimal generation dispatch of distributed generators considering fair contribution to grid voltage control

Abstract

This paper investigates voltage control and generation dispatch of distributed generators (DGs) and how the operation of installed DGs can be optimized in distribution systems. A novel online generation dispatch algorithm for DGs is proposed in this work. This algorithm optimizes the contribution of individual DG units for grid voltage control in terms of costs. The technical advantages of the presented approach are evaluated by comparing the simulation results with various static and local dispatch control strategies, which can be considered currently as state-of-the-art according to technical standards and recent research. Simulation results indicate that the proposed method decreases the total cost for DG, improves the quality of voltage profiles and guarantees for each DG unit the opportunity to provide a fair amount of ancillary service to the grid. Additionally, through a performance test on a real time simulation platform it is concluded that the presented approach is also suitable for large grids in real time operation

Multi-Objective Approach to TCSC and DG Coordination under Contingency in an Integrated Transmission and Distribution Networks

“…4, at the transmission section, the transformer branch outages are termed Invalid in Table VI, since it also results in the outage of a generator; while the unfeasible term refers to line outages that cause singularity and hence nonconvergence of the load flow at the base case. In Table VI, P I S , P I V 1 and P I V 2 are the apparent power version of the performance index, and the two voltage variant measurements of line outage performance index described by equation (37). The ranks of the outage lines based on the composite severity indices P I S−V 1 ,P I S−V 2 and P I S are shown in boldface.…”

Multi-Objective Approach to TCSC and DG Coordination under Contingency in an Integrated Transmission and Distribution Networks

“…Also, in equation ( 34) V vio defines the set of all buses with post contingency voltage violation. The equation (37) gives the simplified form of equation ( 31) with the two voltage variant, respectively. In Fig.…”

“…Therefore, in the TSO managed model, a single line outage (N − 1) contingency can illustrate the impacts of TSO's contingency on the integrated Transmission and Distribution Networks. Consequently, Table VI gives the result of (N −1) contingency based on equation (37). From the topology of Fig.…”

Embedded adaptive mutation evolutionary programming for distributed generation management

“…The centralized power plants have their own disadvantages. One of the problems is the transmission distance issue which leads to power losses [15][16][17].…”