A Novel Methodology for Penetration Capability and Location Calculation of Distribution Generation Considering Voltage Constraints

A novel penetration capability of distribution generation methodology to voltage constraint is developed. The design goal of the methodology is to decide the maximum DGs' capacity and the best integrated location without voltage violation. Instead of dealing with the combinatorial nature of the proposed problem, the proposed methodology employs a two-stage methodology to decide the solutions. The first stage is a linear method to estimate the capabilities under all the possible DGs' locations. The second stage is a detailed calculation stage which employs a nonlinear optimization method to calculate the exact maximum penetration capability under the best location determined in stage 1. The maximum penetration capability and the corresponding location can be easily calculated by the proposed methodology. Finally, several examples under single and multiple DGs in IEEE 33-bus power system are used to verify the proposed methodology. The numerical studies show that the effectiveness of the proposed methodology in calculating the maximum penetration capability and determining the best location for DGs in distribution network systems.