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《Power System Technology》 2009-04
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Selection Scheme for Installation Site and Optimal Capacity of TCSC to Increase Transfer Capability

PAN Shu-jie1,MA Ping2,CAI Xing-guo1,HAN Dong1 (1.School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,Heilongjiang Province,China;2.School of Automation Engineering,Qingdao University,Qingdao 266071,Shandong Province,China)  
The influence of constraints such as voltage limits,branch power limits and limits of other electric equipments are critical for transfer capability. By use of continuation power flow model,a mathematical expression for the first order sensitivity of the transfer capability with respect to branch reactance is deduced at the critical operating point,and according to the results of sensitivity ordering a new method to determine the installation site of thyristor controlled series capacitor (TCSC) is proposed. After the installation site is ascertained,the inequality constraints which are out of bound before the installation of TCSC are represented by equalities and set as known conditions; the compensation degree of TCSC with regard to the branch where it is to be installed is set as a new unknown quantity; then conventional power flow equations are expanded and taking the minimum of expanded power flow mismatching function as object the optimal compensation degree is calculated. Simulation results of IEEE 30-bus system and IEEE 118-bus system show that the proposed method to select the installation site and optimal capacity of TCSC is effective.
【Fund】: 高等学校博士学科点专项科研基金资助项目(20050213006);; 黑龙江省科技攻关项目(GD07A304)~~
【CateGory Index】: TM761
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