Abstract
In this current research initiative, symbiotic organism search (mostly known as SOS) evolutionary computational methodology is used to find out solution for reactive power dispatch (ORPD) issues in power system. SOS algorithm is influenced by interaction among organisms of the ecosystem and independent from algorithm specific control parameters. In ORPD problem, multiple optimization objectives such as transmission line’s real power loss reduction, voltage stability-index improvement and reduction of total voltage deviation are undertaken. The control variables, e.g., generator and slack bus voltages, transformer tap setting and shunt capacitance are set to its optimal values in order to find the best possible solution of undertaken objective functions. A trial of adopted SOS methodology is performed on “IEEE-30 bus, -57 bus and -118 bus standard test cases” in power systems. Acquired sophisticated findings help to infer that the recommended SOS method is competent enough in comparison with other cited methods in the progressive literatures.
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Abbreviations
- \({\text{BF}}_{(1)}\),\({\text{BF}}_{(2)}\) :
-
Benefit factors
- \(B_{(ij)}\),\(G_{(ij)}\) :
-
Transfer susceptance and conductance, respectively
- \(F_{(ji)}\) :
-
\(\left( {i,j} \right){\text{th}}\) Components of bus admittance matrix (\(Y_{{({\text{Bus}})}}\))
- \(L_{(k)}\) :
-
Voltage stability index of the \(k{\text{th}}\) node
- \(M\_V\) :
-
Relationship between vectors \(X_{(i)}\) and \(X_{(j)}\)
- \(N_{{({\text{B}})}}\),\(N_{{({\text{C}})}}\),\(N_{{({\text{G}})}}\),\(N_{{({\text{l}})}}\),\(N_{{({\text{L}})}}\),\(N_{{({\text{T}})}}\) :
-
Number of buses, shunt capacitors, generator buses, transmission lines, load buses and transformer branches, respectively
- \(P_{{({\text{D}})}}\),\(P_{{({\text{G}})}}\),\({\kern 1pt} P_{{({\text{Loss}})}}\) :
-
Active power demand, generation and transmission line losses, respectively
- \(P\_V\) :
-
Relationship between parasite vectors
- \(Q_{{({\text{C}})}}\),\(Q_{{({\text{D}})}}\),\(Q_{{({\text{G}})}}\) :
-
Reactive power compensation, demand and generation, respectively
- \(r_{(m)}\) :
-
Random number specified within [0, 1]
- \(S_{(l)}\) :
-
Complex power of branch l
- \(T_{(i)}\) :
-
Transformer tap (integer) installed in the ith line
- \(V_{{({\text{G}})}}\) :
-
Generator voltage (continuous)
- \(V_{(i)}\), \(V_{(j)}\), \(V_{(i)}^{{{\text{ref}}}}\),\(V_{{({\text{L}})}}\) :
-
Voltages at the i and j buses, referred (i.e., 1.0 pu) and load voltages, respectively
- \(X_{(i)}\), \(X_{(j)}\),\(X_{{({\text{best}})}}\) :
-
iTh and jth organism in the ecosystem and highest degree of adaptation, respectively
- \(\left( {X_{{{\text{best}}}} - X_{j} } \right)\) :
-
Benefit of \(X_{(j)}\)
- \(X_{{(i\,{\text{new}})}}\), \(X_{{(j\,{\text{new}})}}\) :
-
Mutuality effort given by the organisms to enhanced adaptability at the buses i and j, respectively
- \(Y_{(jj)}\), \(Y_{(ji)}\) :
-
Self and mutual admittances, respectively
- \(\delta_{(i)}\), \(\delta_{(j)}\) :
-
Phase angle at i and j buses, respectively
- \(\alpha_{(ij)}\) :
-
Phase angle of the term \(F_{(ij)}\)
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Prasad, D., Mukherjee, V. & Singh, R.P. Application of SOS Algorithm for Solution of ORPD Problem. J. Inst. Eng. India Ser. B 103, 747–766 (2022). https://doi.org/10.1007/s40031-021-00700-8
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DOI: https://doi.org/10.1007/s40031-021-00700-8