Research Article
Optimal Allocation of DG and DSTATCOM in Radial Distribution System Using Cuckoo Search Optimization Algorithm
| (a) Result of 69-bus system |
| | Cases | | PSO [12] | Proposed method |
| | Only DG (Case II) | DG (location) | 1.8761 (61) | 1.8727 (61) | | Power loss (kW) | 83.22 | 83.21 | | (p.u) | NA | 0.9682 | | VSI (p.u) | NA | 0.8788 | | TOC ($) | NA | 9696.3 | | Average computation time (s) | NA | 12.54 |
| | Only DSTATCOM (Case III) | DSTATCOM (size and location) | 0.9011 (61) | 1.200 (61) | | Power loss (kW) | 159.38 | 152.95 | | (p.u) | NA | 0.9285 | | VSI (p.u) | NA | 0.7375 | | TOC ($) | NA | 6611.8 | | Average computation time (s) | NA | 12.84 |
| | Both DG and DSTATCOM placed simultaneously (Case IV) | DG & DSTATCOM (size and location) | 0.1223 (61),
0.9045 (61) | 1.7500 (61),
1.15 (61) | | Power loss (kW) | 32.56 | 24.15 | | (p.u) | NA | 0.9715 | | VSI (p.u) | NA | 0.8908 | | TOC ($) | NA | 14596.6 | | Average computation time (s) | NA | 12.35 |
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| (b) Result of multiple DG and DSTATCOM placement (Case V) |
| | | 12-bus system | 34-bus system | 69-bus system |
| | DG size in MW (location) | 0.075 (),
0.09 (),
0.065 () | 1.90 ()
0.77 ()
0.10 (34) | 0.49 (),
1.40 (61),
0.25 (63) |
| | DSTATCOM size in MVAr (location) | 0.11 (),
0.075 (),
0.10 () | 0.65 ()
0.85 ()
0.75 (25) | 0.27 (25),
0.98 (61),
0.20 (63) |
| | Power loss (kW) | 1.34 | 19.32 | 8.07 | | (p.u) | 0.9947 | 0.9919 | 0.9925 | | VSI (p.u) | 0.9778 | 0.9682 | 0.9587 | | TOC ($) | 2580.4 | 26327 | 17982 | | Average computational time (s) | 11.98 | 12.12 | 12.56 |
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