Study Of Combined Expansion Planning For The Primary Energy Transmission Network,Power Plants And Electrical Transmission Network

Power is the most important secondary energy, so it is an important task in recenttimes to improve the accuracy and comprehensiveness of power planning. However,there are still many problems in the research about power planning at home andaboard. First, with the increasing load, the capability of fossil fuel units and the ctransmission network as well as the fuel transfer line should be extended as a whole,and all previous researches are aiming at only one part or two parts; Secondly,traditional renewable energy planning usually focus on the generator units’ maximumoutput, assumed that the units are already built and their capability are large enough.However,the planning above ignored the appropriate capability to investigate ineconomic terms; third, stochastic algorithms are often used to deal with theuncertainty of the output of renewable energy units in the planning including them.Those stochastic algorithms are of poor efficiency and of great time consuming,when the power system is of large scale, the terrible time consuming is unacceptablein practical engineering.Aiming at problems above, this thesis comes up with new mathematic models tomake power planning, and achieves good results. The contents and results of theresearch are as follows:(1) In order to improve the integrity of the energy planning, this thesis comes up witha combined expansion planning for the primary energy transmission network，power plants and electrical transmission network, as well as improved Bendersdecomposition algorithm to solve the model.(2) This thesis comes up with a expansion planning model including renewable units,fossil fuel units and transmission network. The appropriated capability ofrenewable units can be obtained from the model, which avoids excessiveinvestment of renewable units.(3) This thesis Combines Monte Carlo algorithm and improved Bendersdecomposition algorithm to deal with uncertainty of renewable generator units.Keywords: power planning; renewable energy; unit expansion; transmissionnetwork expansion; fuel transmission line expansion; Benders decomposition...