Power System Dynamic Trend And Optimal Power Flow Analysis

Based on power system dynamic trend and optimal power flow are studied,and aimed to find a can adapt to continuously develop and expand the new scheme of power grid in order to overcome the limitations of traditional flow algorithm various.Dynamic power flow calculation to provide safe and stable operation of power grid data service;While the optimal power flow for the efficient operation of power grid data services.Both supplement each other,be short of one cannot.Power system power flow calculation is the grid can be the basis of safe,stable and efficient operation,continuously for power grid transmission power,remove the power grid in time in the construction and development of all kinds of fault and grid data provide strong support.Dynamic trend is on the basis of traditional power flow calculation and considering the static load and generator frequency characteristic,based on power flow calculation and frequency calculation.Dynamic trend of this article is in P-Q decomposition method of power flow calculation to join the frequency calculation module,on the basis of well simulated in power disturbance occurs,the imbalance of power produced by the generator and load distribution as well as between the actual frequency change.Optimal power flow is based on the dynamic trend,under the premise that ensure stable and reliable operation of the grid,the grid operation cost minimum as the target,the use of advanced interior point algorithm for active again in a more reasonable distribution system,to meet the requirements of economic operation,close to the power grid in the actual operation.Optimal power flow based on the dynamic trend and relevant discussion,using the program to a specific above 220 kV voltage class main grid separately carried on the dynamic trend and optimal power flow calculation,and from the power distribution,total loss of system frequency,so the results were compared between the two,find a more reasonable solution grid tide,and the optimal power flow is reliable and practical,satisfactory results were obtained.