Research on application effect evaluation of interline power flow controller based on analytic hierarchy process

With the increasing social load and the increasingly complex grid structure, the uneven distribution of power flow and insufficient voltage support capacity have become essential factors restricting the transmission capacity of the system. Interline Power Flow Controller (IPFC) is a new type of Flexible AC Transmission Systems (FACTS) device with powerful power flow control capability. It can be applied to control power flow and transient stability of multiple channels to improve the transmission efficiency of scarce corridor resources. Considering the lack of theoretical research and guidance planning for IPFC application effect evaluation, a comprehensive evaluation method based on the fuzzy Analytic Hierarchy Process (AHP) is proposed in this paper. First, the power grid flexibility evaluation index is defined, the evaluation hierarchy is established, and the weight assignment method of each index is given. Further, the critical transmission sections are selected in the extensive system, and the scale of each index is obtained through multiple sets of calculation examples to evaluate the control potential and safety index of IPFC in typical application scenarios. Finally, combined with fuzzy analysis, the comprehensive score and overall evaluation of the IPFC scheme are given, and the effect of the device on the system is quantified, which provides a specific theoretical basis and technical support for the planning and application of IPFC.