Study On Scheme Of Electric Supply For Voltage Grading & Network Partition And Index Algorithm

With the development of the power system, electromagnetic loop network appears. The operation of electromagnetic loop network results in many uncertain problems, so it is inevitable to break out electromagnetic loop network. Because of the reasons for forming the electromagnetic loop network are different, where and when to breaks out needs comprehensive consideration. This paper carries out the integrated analyses to the scheme through various indices contrast by systems transmission capacity, static voltage stability, short-circuit current level, transient stability, stability limit of transmission profile. And the corresponding software is developed—Electromagnetic Loop Network integrated assessment system. Sometimes there are more than one feasible schemes, how to choose the best scheme is difficult; the Principal Component Analysis is applied to solve it. Finally, specific example of Anhui network analysis to verify the validity of the indices, the accuracy of comprehensive assessment system and the practicability of the software.