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Stability needs to be guaranteed when incorporating active transmission topology control (TTC) into smart grid planning and operation. In this paper, the impacts of TTC on power system stability are analyzed with wind and hydraulic power penetration. Potential stability issues caused by TTC are demonstrated. Also, a stability assessment tool based on time-domain simulation is presented to efficiently...
PID controllers are widely used in the load frequency control procedure in power systems. Stability and transient response are two significant design requirements. In this paper, a modern PID controller parameters design for a single unit load frequency control system is proposed. It is based on stabilizing sets design method and a modified characteristic ratio assignment method. Stabilizing sets...
Transmission line congestion is a critical factor that will affect power system operational cost. With more renewable energy in the future grid and the intermittence of nature, transmission line congestion will be more frequent. Due to the congestion, renewable plant has to curtail some available generation. This paper investigates the use of active transmission line switching operation in power system...
Voltage instability is caused by the inability of the system to meet reactive power demand. The problem of voltage instability is even more critical for an isolated microgrid, which only has generators with limited reactive power capacities. In this paper, we investigated what happens if all generators in the system hit their reactive power limit. To simplify the analysis, a simple two-bus example...
Due to the environmental concerns and induced political incentives, wind power penetration has been increasing in many countries around the world. However, wind power generation is very different from conventional power generation due to stochastic and intermittent nature of the wind. The wind power may not be available or generating the demanded amount as needed. Thus, these mandates to promote wind...
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