Atma Ram Gupta

An efficient method for D-STATCOM placement in radial distribution system

This paper presents an effective method for the identification of candidate bus for DSTATCOM placement for the minimization of power losses and improvement of voltage profile in radial distribution system with load modeling. The D-STATCOM is modeled for determination of its size by assuming the voltage magnitude as 1 p.u. at the candidate bus. The validity of the method is tested on the standard IEEE 33-bus radial distribution system by performing load flow analysis after compensating the candidate bus using MATLAB software. The results obtained are compared without and with the D-STATCOM for all load models. The voltage profile and the losses reduction is obtained for IEEE 33 bus test system with the optimal placement of D-STATCOM based on the sensitivity index.

Optimal placement of D-STATCOM in distribution network using new sensitivity index with probabilistic load models

In this paper, a new index named as reactive power stability index is proposed for finding most favorable location for placement of D-STATCOM which provides maximum voltage stability in radial distribution system. For this, the load flow is carried out for calculating bus parameters with probabilistic load model. Probable load is calculated using Monte Carlo Simulation (MCS) method. The main contributions of the paper are: (a) Optimal D-STATCOM placement based on the new reactive power stability index, (b) Determination of best D-STATCOM size with probabilistic ZIP load model. (c) Comparison of energy saving with D-STATCOM placement in distribution network considering deterministic and probabilistic load model. The proposed algorithm is tested on rural distribution feeder of 85-bus radial distribution system by using MATLAB software. Results show the reduction in line losses and enhancement in voltage profile.

Annual Energy Savings with Multiple DG and D-STATCOM Allocation Using PSO in DNO Operated Distribution Network

The installation of renewable energy sources based distributed generation (DG) is increasing continuously due to its various techno-economic advantages. Distribution static compensator (D-STATCOM) based reactive power compensation is gaining importance in smart distribution system management. The main high lights of the paper are separate and combined placement of DG and D-STATCOM and their size determination using particle swarm optimization (PSO), assessment of impact of DG and D-STATCOM on loss reduction and savings in losses, determination of annual energy savings and annual cost savings, Optimal allocation of DG/D-STATCOM results improvement in voltage profiles, reduction in losses, annual energy savings as well as savings in annual cost of energy loss. The obtained results are tested and compared for IEEE-33 bus radial distribution systems.

Harmonic load flow analysis of radial distribution system in presence of distributed generation

The optimal DG allocation and sizing which results in the reduction of THD and the system losses using the backward and the forward sweep method is shown in this paper. The optimal location of the DG is obtained from various sensitivity indices. The size of DG is determined by the minimum loss criterion. BIBC and BCBV matrices are calculated to perform load flow analysis and harmonic flow analysis in distributed system. The comparative result for the harmonic flow analysis with and without DG placement is described in this paper. The proposed method is tested on IEEE 33 bus radial system.

Optimal D-STATCOM placement in radial distribution system based on power loss index approach

In this paper, power loss index method is used for the placement of D-STATCOM in radial distribution system for reduction of line losses and improvement of voltage profile. For this, the load flow is carried out for calculating bus parameters. The mathematical modeling of D-STATCOM is performed for calculation of reactive power injections of D-STATCOM for all the buses. This reactive power value is used for finding out the optimal location of D-STATCOM by power loss index (PLI) method. Finally the proposed algorithm is tested on IEEE 10, 33 and 69-bus radial distribution system by using MATLAB software. Results show the reduction in line losses and improvement in voltage profile for all test systems.