Units Start Strategy In Power System Restoraton

With the community's dependence on the continuous improvement of electricity supply,between the total increasing load and power equipment,the contradiction because of theaging,and various of the natural disasters or weather,all directly cause the power systemoperating close to even exceed to the limit of its stable operation,then triggered cascade ofblackouts of the whole power system. For this reason,we have to enhance the understandingof power system restoration problem,particularly,after a power blockout,a quickly andefficiently methods to restore the system operation is an important field of power systemissues. this paper is just in learning and draws on existing research results,combined withthe region to consider the black-start capability where there is no self-starting units whichstart-up time and capacity constraints,generator self-excitation constraints,line voltage,load characteristics and other constraints,the whole process consists of the restoring unitsconstraints,network constraints and load restoration restore constraints,and made withinthe region on the black start unit starts the path optimization strategy.Due to the different types of units at different stages to restrict,this paper will use thetwo-step method constraints to consider a phased,and will recovery process and establishthe mathematical model proposed based on a reasonable improvement and mixed integerprogramming algorithm for optimization Celue Binary,to have a maximum of powergeneration capacity during the most optimal scheme,by using the EMTDC-PSCADelectromagnetic transient simulation program on the black start mode,with the networkconstraints and detailed simulation of load characteristics,we get have a mathematicalexpressions for constraints above,and then we add them to the overall model which issolved again. The program can within the shortest possible time to maximun the capability ofthe whole power systems to carry the load,so as to achieve the rapid and orderly system forthe reconstruction and the restoration of electricity to users. In this paper,we have aIEEE-39 bus system as an example to prove the effectiveness of the algorithm.