Stabilization of power systems by governor-turbine control

Development and field tests of a damping controller to mitigate electromechanical oscillations on large diesel generating units

“…The installation of a damping controller via the speed regulation system may be advantageous because theoretical studies show that there is a weak coupling between this control loop and excitation system controllers in other machines of the interconnected power system [5,6]. Therefore, in this work an alternative technique is developed which allows the direct modulation of the inlet valve position on the diesel engine (prime mover), by controlling the electronic speed regulator output current, as illustrated in Fig.…”

Global governor-side damping controller for low frequency oscillation of power systems based on partial state feedback

“…However, the effectiveness in damping the inter-area modes is limited , because the inter-area modes are not as highly controllable and observable in the generator's local signal as the local modes. Meanwhile, the Governor-side PSS with local signals are also theoretically developed and discussed [5][6][7][8]. However, the performance of the governor-side PSSs with local signals are also limit, especially for the inter-area modes, since inter-area modes are mainly influenced by the global states, while the local Governor-side PSSs also use the local signal as the control input, which is similar to LPSSs.…”

Design and Field Tests of a Digital Control System to Damping Electromechanical Oscillations Between Large Diesel Generators

“…It is important to remark that this technique is recommended only for generators systems having fast response actuators, such as diesel engines. The installation of a damping controller via the speed regulation system may be advantageous because theoretical studies show that there is a weak coupling between this control loop and excitation system controllers in other machines of the interconnected power system [3,4]. A complete real world example of a control development for safe operation of a power plant has been presented in this chapter.…”

“…An alternative technique, which has been investigated by several authors [3][4][5], is the application of a damping controller through the speed governor system (see dashed box (b), in Figure 1). This is the approach followed by this work.…”