含并联型FACTS电力系统的动态连续潮流算法研究-电力电子与电力传动专业论文.docxVIP

三峡大学硕士学位论文 三 峡 大 学 硕 士 学 位 论 文 PAGE IV万方数据 PAGE IV 万方数据 ABSTRACT In order to achieve flexible control of power system flower,regarding the transmission line parameters as controlled variable to adjust the power flow is the core of Flexible ac transmission system (FACTS) technology, With FACTS devices is becoming more and more widely in power system, the application of the traditional power flow calculation method isnt practical because of FACTS devices’ effection.Must seek to give full consideration to FACTS element influence on the whole power system power flow calculation method . Firstly, this paper introduces the research background, significance, research status, the definition, function and classification of FACTS, then introduces the basic principle of several typical FACTS device. Secondly, it studies the static calculation model and method of conventional power flow about the FACTS ,and elaborated the SVC in the basic process of conventional power flow calculation in detail, then use the program to demonstrate. Thirdly,in order to the accuracy of static voltage stability analysis, on the basis of existing, this paper puts forward a FACTS element model and power flow calculation method using continuation power flow( CPF), and expounds the principle of the model ,algorithm and the derivation process in detail. Fourthly,as conventional Continuation power flow method in the treatment of the insufficiency of the imbalance of power, based on the dynamic power flow equation sets up continuation power flow model, and a reasonable distribution of DCPF unbalanced power, the system solved the problem that conventional continuous flow calculation results depends on the balance of node selection, improving the precision of voltage stability assessment.Then the IEEE nodes example results show that the dynamic continuous trend model calculation result is not dependent on the balance of node selection, then effectively improve the precision of voltage stability analysi