A Robust Current-Injection Model in LP-based O.P.F and Network Sensitivity Calculation

• Main Authors: Chen, Jun Nen, 陳俊能
• Other Authors: Lin, Whei Min
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/87908236559876026570

碩士 === 國立中山大學 === 電機工程研究所 === 83 === This research will formulate a new algorithm for the network senitivity calcultion. This algorithm will be incorporated in the optimal power flow for testing. A new linear incremental model will be formulated in the solving process and the linear programming technique will be applied. There are already many research works in the LP-OPF area. As a matter of fact, many energy management systems are running the LP-OPF in real-time with the fast decoupled DC(FD-DC) model. However, FD-DC model needs assumptions on (1)negligible line conductances (2)small angular differences (within a 30 degrees range) (3)constant voltages (at their nominal values). The above assumptions are not necessarily true, especially under severe conditions where the system may undergo severe violations. This research will try to develop a new model to avoid the above assumptions. The new model will try to resolve the OPF problem with the performance similar to the conventional fast decoupled DC model. However, no assumptions will be needed. A decoupled version of the new model will be also investigated. The state variables, power-injections, and current-injections will be analyzed to investigate the practicality of the new model. The convergent characteristics, the robustness, storage and performance will all be tested to see the feasibility of the new model in handling the real-time energy management functions.