برنامه‌ريزي توأم توسعه شبكه انتقال و منابع توان راكتيو با درنظرگرفتن محدوديت‌هاي قابليت اطمينان

چكيده انگليسي :

Coordinated Transmission System and Reactive Power Sources Expansion Planning Considering Reliability Constraints Milad Boruni Kupaei Mi Boruni@ec iut ac ir August 25 2020 Department of Electrical and Computer Engineering Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiSupervisor Mohammad Amin Latify Assoc Prof Latify@cc iut ac ir Abstract With load growth and new generation sources installations in power systems supplying demand in long termneeds electric power transmission networks reinforcement or expansion planning Since a power system is ex posed to many random events such as unscheduled outage of equipment expansion planning should be done tosatisfy the reliability requirements One of the most important aspects of reliability that needs to be consideredin expansion planning is security i e the ability of a power system to withstand any contingency To ensurethe security of the power system it is necessary to consider the active and reactive power supply requirements simultaneously In this thesis static security constrained transmission expansion planning SC TEP problem with the aim ofminimizing the investment and operation costs in the target year is studied while N 1 security constraints intransmission network are taken into account In these studies capacity and location of power plants as well asthe forecasted load as a load duration curve are assumed to be known in the target year In the first step theSC TEP problem is modeled based on DC power flow equations as a mixed integer linear programming MILP problem Then based on AC power flow equations SC TEP problem is modeled in order to consider the activeand reactive power supply requirements simultaneously in maintaining the security of the power system Thereactive power planning RPP model is also inserted into SC TEP problem In order to achieve the globaloptimum solution AC power flow equations convexification is employed by which the proposed coordinatedtransmission system and reactive power sources expansion planning problem is expressed as a mixed integersecond order cone programming MISOCP problem Considering contingencies on all existing and candidate transmission equipment at all load levels increasesthe number of variables and constraints of the planning problem Therefore the optimization problem s di mension increases dramatically which leads to increase problem solving time and may even make the problemintractable In this thesis a method based on an iterative process is proposed to solve the planning problemwith the aim of achieving the global optimum solution and reducing the problem solving time simultaneously In this method among all of the contingencies that should be considered in the contingency set only limitednumber of contingencies that are selected in sequential iterations and added to the contingency set are consid ered By considering this limited contingency set there is no need to consider the complete contingency set Ineach iteration a new contingency in each load level is obtained by solving the worst contingency identificationproblem This problem is a bi level optimization problem At the first level the contingency that leads to theworst operation constraints violation is identified The second level problem models the operator s reactionto the contingency selected at the first level in which the operator tries to minimize the operation constraintsviolations Due to the convexity of the second level problem using duality theorem the bi level optimizationproblem is recast as a single level optimization problem The proposed planning models are implemented on the Garver IEEE 24 Bus and IEEE 118 Bus test systemsin the GAMS software The obtained results indicate the capability of the proposed iterative method to solve theplanning problem in an acceptable time The results also indicate that by employing the proposed coordinatedtransmission system and reactive power sources expansion planning model an economically exp

بوروني كوپائي، ميلاد

برنامه‌ريزي توأم توسعه شبكه انتقال و منابع توان راكتيو با درنظرگرفتن محدوديت‌هاي قابليت اطمينان

برنامه‌ريزي توسعه شبكه انتقال , برنامه‌ريزي توان راكتيو , معيار امنيت N-1 , برنامه‌ريزي مخروطي درجه‌دوم آميخته با عدد صحيح , بهينه‌سازي دوسطحي