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An interconnected power system is made of several areas that can exchange power through tie lines. These tie lines are equipped with Phase Shifting Transformers (PSTs) for active power flow control. In a multi-area power system operation, an operator within a control area should know the maximum power that can be imported to the area for the best possible operation of the system. AC power flow method...
People pay more attention to the use of FACTS devices to ease grid congestion problems. On the base of the traditional optimal power flow (OPF), an optimal congestion dispatch model with TCSC devices is proposed in this paper, expressing the control of the TCSC over the power systems as additional power equations. Instead of introducing a TCSC controller equation, optimization can be achieved in the...
In this paper, an improved maximum loading point (MLP) calculation method is proposed. The calculation process is based on the properties of the normal vector to the feasibility boundary computed close to MLP, which is calculated by a load flow method with step size optimization (LFSSO). The process is characterized by obtaining consecutive approximations of the MLP within the infeasible region. Since...
In this paper, a multiobjective evolutionary algorithm (MOEA) to solve optimal reactive power (VAR) dispatch problem with flexible AC transmission system (FACTS) devices is presented. This nonlinear multiobjective problem (MOP) consists to minimize simultaneously real power loss in transmission lines and voltage deviation at load buses, by tuning parameters and location of FACTS. The constraints of...
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