| Reactive power as the active power, is to ensure power system power quality, voltage quality, reduce power consumption and power grid safety and stability indispensable part of reactive power optimization is to ensure system security, the economy of the effective means to improve power system voltage quality of the important measures. Reactive power optimization objective is to determine the system of rational allocation of reactive power equipment, to ensure grid security constraints in meeting certain conditions under which makes the installation of reactive power equipment investment and running costs of the grid to minimize, to achieve the system's technical and economic performance index optimization.Reactive power optimization problem is a multi-variable, multi-constrained mixed nonlinear programming problem involving both continuous variables operating variables are also discrete variables, the optimization process is more complex. This article first embarks from the power factor concept and the significance, the analysis electrical power system idle work optimizes basic thought, commonly used idle work control device. Secondly, the paper described the reactive power optimization features, as well as domestic and international research developments, and on this basis, describes the particle swarm optimization algorithm and its application in the power system, with particular emphasis on studies to improve particle swarm optimization measures, and in solving the problem of reactive power optimization algorithm is applied and improved.Finally, the actual papers for longyou power grid, analysis of its status, operation and management of power network construction and operation, load status (mainly power flow distribution) and forecast future developments, and according to the a" top down "computing and" bottom up "compensation principle, based on Particle Swarm Optimization algorithm for reactive power compensation calculations, According to calculations, the simulation results, reasonable and feasible reactive power compensation-building programs, and select a representative of four 10 kV utility line optimization of reactive power compensation to carry out the pilot building. On the basis of the trial, and select the power supply or power factor in a longer radius near 0.89 and use load larger seven lines in the second phase of optimization of no building work. In practice, a positive dynamic compensation, smooth adjustment and other new technologies, new equipment, equipment selection, and equipment with voltage regulation on the application of new equipment for a try. Through the implementation of the program before and after the effects of detection and analysis of the measured results show that the 10 kV line to improve the power factor (0.94 or more), improved voltage stability. Papers also benefit analysis after the construction of an optimization compensation, summed up the economic and social benefits of the reactive power compensation made. |
