Abstract
The concepts of smart grid and microgrid require new monitoring systems to support automation functionalities in control centers at electrical distribution system (EDS) level. The availability of micro-PMUs (\(\upmu \)PMUs) nowadays equips the control centers with the necessary information, which improves the accuracy of distribution system state estimation, for its various applications. Further, a non-configured EDS involves a significant amount of active power losses that causes additional costs to utilities. The work presented in this paper introduces a generalized, two-stage robust methodology for optimal \(\upmu \)PMU placement considering reconfiguration of the EDS. This hybrid method combines the Taguchi method and upgraded version of binary particle swarm optimization (BPSO) that ultimately provides fast and accurate global optimum. The Taguchi method engenders a more diversified population, which eventually evades premature convergence, and consequently, it makes BPSO more robust. The proposed methodology provides optimal solution for any radial distribution system. Here, for illustration, results obtained for standard IEEE-33 nodes feeder system have been given to demonstrate the behavior and viability of the referred methodology. Various case studies under complex conditions along with the comparative analysis with the existing methods have been carried out to corroborate the superiority and versatility of the proposed methodology.
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Abbreviations
- TIBPSO:
-
Taguchi integrated binary particle swarm optimization
- DSSE:
-
Distribution system state estimation
- EDS:
-
Electrical distribution system
- OA:
-
Orthogonal array
- APLM:
-
Active power loss minimization
- \(\upmu \)PMU:
-
Micro-phasor measurement unit
- OmPP:
-
Optimal micro-PMU placement
- TM:
-
Taguchi method
- BPSO:
-
Binary particle swarm optimization
- \(F_\mathrm{T}\) :
-
EDS total power loss in configuration
- y :
-
Position of particle
- J :
-
Cost function
- T :
-
Represents configuration
- H :
-
Vector matrix for 7-node feeder
- \(c_{mk}\) :
-
\(m-k\) switch state
- \(g_{mk}\) :
-
\(m-k\) branch conductance
- \(A^{\mathrm{in}}\) :
-
Bus incidence matrix
- StNR:
-
Signal to noise ratio
- \(N_T\) :
-
Branch numbers on T configuration
- p :
-
Number of particles
- d :
-
Dimension of search space
- P :
-
Bus real power injection
- D, E :
-
Denotes 2 levels of OA
- M :
-
Number of experiments
- m, k :
-
Bus indices
- \(\theta \) :
-
Bus phase angle
- N :
-
Number of nodes
- \({\hat{\mathrm{fit}}}\) :
-
Fitness function
- v :
-
Velocity of particle
- \('\) :
-
Transpose
- \({\hat{b}}\) :
-
Vector of 1s or greater than 1
- \(c_1,c_2\) :
-
Acceleration constant
- \(f_\mathrm{v}\) :
-
Fitness value
- pbest:
-
Particle best
- gbest:
-
Global best
- \(\gamma \) :
-
Penalty factor
- i, j :
-
Indices
- \(r_1\),\(r_2\) :
-
Random variables
- A :
-
Connectivity matrix
- R :
-
Redundancy level
- Y :
-
Position vector
- W :
-
Cost vector
- C :
-
Measurement redundancy
- l :
-
Number of levels
- \(K,\phi \) :
-
Constants
- f :
-
Observability constraint
- V :
-
Bus voltage
- G :
-
Initial population matrix
- t :
-
Iteration number
- \(\omega m\) :
-
Set of buses neighbors to m
- g :
-
Variable
- \(N_{\mathrm{NO}}\) :
-
unobservable nodes
- Q :
-
Bus reactive power injection
- w :
-
Inertia weight
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Appendix
Appendix
An orthogonal array with seven factors and each factor consisting of two levels denoted by letters D and E with symbolization as \(L_8(2^7)\) is given in Table 10.
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Tiwari, S., Kumar, A. Reconfiguration and Optimal Micro-Phasor Unit Placement in a Distribution System Using Taguchi-Binary Particle Swarm Optimization. Arab J Sci Eng 46, 1213–1223 (2021). https://doi.org/10.1007/s13369-020-04973-x
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DOI: https://doi.org/10.1007/s13369-020-04973-x