Research On Available Transfer Capability Of Power Grid

ATC(Availabe Transfer Capability), as a important index which guarantees the power system safety and stability, has got much more attention by grid dispatching person due to the continuous advancement of technology and the rapid development of electric power industry. The problem of ATC algorithm has become one of the most hottest and important topics in moden power system. The research on automatic calculation of ATC used in engineering will greatly increase the work efficiency of grid dispatching persons. We can foresee that the automatic calculation of ATC used in engineering will get unprecedented development due to the continuous development of grid dispatching automation system and grid analysis software, especially under the background of the construction for smart grid.This paper is mainly discussing the problem of ATC algorithm for power grid.This paper summarized the newest research on ATC algorithm both in domestic research and overseas research first, and summed up the problem of ATC about Multi-Section, which the present academia has involved a little, and introduced the algorithm of continuation power flow and its application for ATC.For the problem of ATC about Multi-Section, this paper analyzed that interrelationship between Multi-Section with a regional grid of our country as an example. In order to improve the reliability of ATC algorithm, it analyzed the influence of the adjusting strategy for generator to power flow and transient stability, and derived three indexs which reflect the property of transient stability for generator based on the equal area criterion. An adjusting strategy of generator which considering the transient stability was proposed. The effectiveness of the proposed approach was tested on WEPRI-36 system. Meanwhile, an ATC algorithm about Multi-Section based on the analysis of interrelationship between two sections was proposed, and the effectiveness of the proposed algorithm was tested on WEPRI-36 system.Finally, this paper presented an ATC algorithm can be used in application of engineering. A modules of ATC calculation was also developed, the effectiveness of the proposed algorithm was tested on WEPRI-36 system.