Optimal placement of DG in radial distribution systems based on new voltage stability index under load growth

Murty, V. V. S. N.; Kumar, Ashwani

doi:10.1016/j.ijepes.2014.12.080

Cited by 253 publications

(144 citation statements)

References 31 publications

(28 reference statements)

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“…The reason being high loop current flowing across the TL. The performance analysis of case 2 with six scenarios have illustrated in Figure 7a,b, where impacts of load growth at 7.5% [32] per year at same retained DG capacities as in case 1, have evaluated respectively. In order to keep discussion to the point, results with only fifth-year load profile have demonstrated in the analysis.…”

Section: Evaluation Of Results For Casementioning

confidence: 99%

“…Furthermore, the LM achieved in percentage are more than C2/S1 and C2/S2 scenarios; respectively. The system losses vary as a function of DG penetration level in a U-shaped trajectory [32,34]. As the DG penetration increases, system losses reduce to a certain point and then it starts increasing.…”

Section: Evaluation Of Results For Casementioning

confidence: 99%

“…The validation of proposed VSI-LMC based approach is carried out by comparing the achieved results with other VSI and sensitivity based approaches, as shown in Table 3, i.e., RDN based VSI in [32], power stability index (PSI) [29] and novel power loss sensitivity (NPLS) [23] based methods. The compared methods were initially proposed for RDNs and have compared with LDN from the perspective of voltage stability, LM, DG penetration, DG quantity and respective savings; give a broad insight of the analysis, respectively.…”

Section: Comparison Of the Results With The Existing Research Workmentioning

confidence: 99%

“…The fundamental evaluation paradigm is the cost of energy loss, which is the annual cost of energy loss (CEL) or active power loss (CPL) and presented by Equation (15) as follows [32]:…”

Section: Cost Of Energy Losses In Loop Distribution Networkmentioning

confidence: 99%

“…The case 2 has further demonstrated with six scenarios and is discussed in the next section. The load growth is measured at a rate of 7.5% increase per year and planning period as 5 years, is also considered in [32]. The load model is same (CP-SLL) and modified load after load growth is 5459.124 KW and 3865.72 KVAR, respectively.…”

Section: Case 2: Impact Of Same Distributed Generation Unit Capacity mentioning

confidence: 99%

See 4 more Smart Citations

DG Placement in Loop Distribution Network with New Voltage Stability Index and Loss Minimization Condition Based Planning Approach under Load Growth

Kazmi

Shin

2017

Energies

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This paper presents a new planning approach based on voltage stability index (VSI) together with improved loss minimization (LM) formulations. The method has employed for application of distributed generation (DG) unit placement (location and size) in a loop (configured) test distribution network (LDN). Initially, VSI relationship for equivalent loop model has employed to find out potential locations for DG placement in LDN. Later, loss minimization formulations and loss minimization conditions (LMC) have been derived on the basis of an equivalent electrical model of LDN, for single and two DGs operating at various power factors, respectively. The proposed approach is comprised of two variants and has demonstrated on the 69-bus test distribution network. The first planning variant as a single case has applied for DG allocation (location, size, number) in LDN under normal load. Similarly, the second planning variant has demonstrated with three cases (six scenarios per case), evaluated under normal load and impact of load growth (across five years), respectively. The proposed approach has analyzed in terms of various performance indicators and results obtained have compared and found in close agreement with existed works in literature. Simulation results verify the validity of the proposed planning approach and establish that LDN performs better than radial distribution network from the perspective of load growth.

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Section: Evaluation Of Results For Casementioning

confidence: 99%

Section: Evaluation Of Results For Casementioning

confidence: 99%

Section: Comparison Of the Results With The Existing Research Workmentioning

confidence: 99%

“…The fundamental evaluation paradigm is the cost of energy loss, which is the annual cost of energy loss (CEL) or active power loss (CPL) and presented by Equation (15) as follows [32]:…”

Section: Cost Of Energy Losses In Loop Distribution Networkmentioning

confidence: 99%

Section: Case 2: Impact Of Same Distributed Generation Unit Capacity mentioning

confidence: 99%

See 3 more Smart Citations

DG Placement in Loop Distribution Network with New Voltage Stability Index and Loss Minimization Condition Based Planning Approach under Load Growth

Kazmi

Shin

2017

Energies

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A solution to multi‐objective optimal accommodation of distributed generation problem of power distribution networks: An analytical approach

Babu

Sydulu

2019

Int Trans Electr Energ Syst

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Summary Distributed generation (DG) technologies are considered an integral part of power distribution networks. The desired performance of power distribution networks can be obtained through the optimal accommodation of DG units. This paper proposes an analytical method called Branch Loss Bus Injection Index (BLBII) to solve the multi‐objective optimal accommodation of distributed generation (MO‐OADG) problem of power distribution networks. Four objectives were considered in the optimisation model: energy loss minimisation, overall bus voltage deviation minimisation, overall voltage stability margin maximisation, and energy not served (ENS) minimisation. A multiple criteria decision‐making method such as the analytical hierarchy process is employed to optimise the weight coefficients of the individual objectives as the optimisation problem is solved based on the weighted‐sum method. The proposed method is demonstrated on benchmark radial power distribution networks of IEEE 33‐bus and INDIAN 85‐bus. The applicability of the proposed BLBII has been validated, and results are presented.

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A new approach for static voltage stability assessment in distribution networks

Sadeghi

Foroud

2019

Int Trans Electr Energ Syst

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Summary This study evaluates the voltage stability of distribution networks by introducing a new index. Using the introduced index, it is feasible to analyze the network buses from voltage stability point of view. The index can increase the accuracy along with simplifying and reducing the computational burden. The suggested index is then developed to take into account the effect of distributed generations and tap changers. It has also been enhanced to be employed in smart grids. By doing so, the index value will depend merely on the bus voltages. Consequently, the calculation burden of the index is decreased significantly. In order to analyze the proposed indices, they are calculated in different load models. Two standard 33‐ and 69‐bus distribution networks are utilized to evaluate the performance of the introduced indices. The obtained results are compared with those of other indices showing that the suggested indices lead to less computational burden and sensible and acceptable results.

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Optimal placement of DG in radial distribution systems based on new voltage stability index under load growth

Cited by 253 publications

References 31 publications

DG Placement in Loop Distribution Network with New Voltage Stability Index and Loss Minimization Condition Based Planning Approach under Load Growth

DG Placement in Loop Distribution Network with New Voltage Stability Index and Loss Minimization Condition Based Planning Approach under Load Growth

A solution to multi‐objective optimal accommodation of distributed generation problem of power distribution networks: An analytical approach

A new approach for static voltage stability assessment in distribution networks

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