Analogue emulation of power system load behaviour

In analogue emulation, a non-linear system model is implemented as a set of reconfigurable analogue circuits. This hardware is actuated, initialised and allowed to settle to a steady state, during which time the user utilises voltage and current measurement devices to observe the system´s transient response and static solution. In this study, the authors present the advantages of analogue emulation over digital simulation for fast steady-state and dynamic power system analyses, as required in real-time network operation. They discuss the design, fabrication, construction and testing of a multi-bus power system emulator with focus on a reconfigurable analogue circuit to mimic load. They utilise circuit theory to analyse its operation and present a set of design modifications aimed at improved accuracy.