In this paper, the stability problems of power systems
with large power source are analyzed with viewpoint of energy balance. The
phenomena are studied when the energy delivery are “blocked” by faults that
occur on some key transmission lines of a large power source within a power
system, on the transmission lines between the interconnected power systems, or
on some key buses. The cases are based on a practical power system and its interconnected
The result of OPF
whose task is to compute the voltage and angle of each node in power system is
the basic of stability calculation and failure analysis in power system. For
this goal, the idea of simulated annealing method is introduced, mixed with the
greedy randomized algorithm (GRASP), and then the hybrid SA algorithm is obtained.
The algorithm is applied to the multi-objective optimal power flow calculation
of power system, and the effectiveness of the algorithm given in this paper is
verified by analysis of examples.
Wind power control technology
is an important part of intelligent control in wind farms. By the automatic
calculation and implementation of control strategy, problems such as imprecise of
manual control scheduling, slow adjust rate, heavy workload, etc. have been
solved. It can improve the capacity of wind power grid, and it also has the
important meaning to the safe and stable operation of power grid. This paper
introduces wind power control system from certain aspects such as control mode,
control principle, and so on.