A Power Flow Controller Design for Phase Shifter Used in Parallel AC/DC Links

A new approach for completing the phase shifter angle for load flow control in the network with multiple loops

“…Methods proposed to control flow using a phase shifter include a control method that maintains the flow constant in an AC/DC combined system [7], and a method which compares the difference between the setup of the phase shifter and the region in which flow can be controlled. In addition, a coefficient to eliminate overloads [11] has been used when eliminating overloads by adjusting the generator output.…”

“…Table 5 lists the values for the first five combinations, and the 10th, 20th, 30th, and 36th combination selected in ascending order after finding the sum of the phase angle adjustment coefficient for each combination. Based on this table, the smallest value is found in the combination for line (7,10,17,31). This is the same as the selection using the proposed selection procedure, and it shows that the selection method is valid.…”

“…When the lines with the phase shifters were (7, 10) or (7,17), the load rose by 25.6%. However, for the combination (10, 17), the rate was low at 1.7%.…”

“…For the sake of comparison, the results of calculating all the cases for combinations of two phase shifters from among the four are shown in case 4 through case 9 in Table 7. When the lines with the phase shifters were (7, 10) or (7,17), the load rose by 25.6%. However, for the combination (10, 17), the rate was low at 1.7%.…”

“…As the amount of business between consumers and power generation firms other than electric power utilities increases as a result of progress in deregulation, current distributions not anticipated in planning by power utilities may appear, and overloads may occur in unexpected places in lines [1]. Phase shifters, recognized for their importance in current control, are being evaluated in many places as a countermeasure [2][3][4][5][6][7][8][9].…”