Automatic Generation Control Analysis With Governor Deadband Effects

Improved load frequency characteristics with genetically tuned supercapacitor energy storage in interconnected power system

“…Additionally, contrasting units of the system will be removed by comparing their respective deadbands in a successive way which brings about minute effective deadbands of their corresponding deadbands consecutively. It was found that the scopes of the oscillations reflect towards the deadband and not towards the normal of all deadbands considered for various generators connected to the system, (Taylor et al, 1979) utilised numerous discrete deadbands working in parallel and each dead-band had separate width inside the normalised governor turbine model.…”

Semi-physical piecewise affine representation for governors in hydropower system generation

“…A different nonlinear representation consists of using dead band (or backlash) [1,5,6]. This model was subsequently improved by including a first-order system in series with the nonlinearity of the backlash type in [7,9,12].…”

“…The motivation was the sustained low frequency oscillations visualized in the frequency of the machine due to the limit cycle generated by backlash nonlinearity. Taylor and Lee [6] analyzed the backlash effects of the governor on the performance of the load-frequency controller in hydroelectric plants. Pantalone and Piegza [7] used descriptive functions to predict low-frequency limit cycles generated by backlash nonlinearities in a single area power system.…”

Limit cycle analysis of power systems

“…Equations (9) and (10) can be rearranged as follows: (12) ai=(T t T l T P +T r T,T t ,+T,T r T t +T,T r T p )ta l \ -(T,+T M +T P +T,W ai^-bTrKrKpa+gK,,…”

“…It is known [3,8,[12][13][14] that the speed governor deadband has significant effects on the dynamic performance of load-frequency conrtol systems. One of the effects is to increase the speed governor regulation [3,13].…”