Simulator Reconfigure Of Power System Transient Stability Analysis Using Analog VLSI

Today, the dimensions of power system becomes larger and larger in the world. Although the predominance is obvious, the large electric network has potential risk, the local perturbation, short circuit fault, they will affect comprehensive peripheral area. So need to have transient simulation in order to prove capacity of power system.The conventional method for transient stability analysis is to solve the generations' swing equations using the step-by-step method. When the dimension is larger and larger, the speed of simulation becomes a bottleneck, it is not fast enough for the real-time transient stability analysis. The analog simulation of a power system modeled by discrete devices permits real-time transient analysis. But due to the size and number of components, this method is only suitable for small system. Be dead against above-mentioned disadvantage, the method to use analog VLSI circuits to accelerate the transient stability analysis is presented by Fried. But two important issues in manufacturing a utility analog VLSI chip for transient stability analysis are addressed. The first issue is the poor simulation accuracy that results from the large passive component deviations. The second issue is to a system, need a special chip, either the parameters or the topology of the analog VLSI chip cannot be changed after fabrication, which is the manufacturing cost. In the dissertation, transconductance conversion reconfigurable method and frequency conversion reconfigurable method, the two methods can have a fast refigure to a VLSI chip according to parameters of different system, which results in prohibitively high fabrication cost. The accuracy is improved by employing switched-capacitor circuits. This paper presents the details to analyse programmable transconductance amplifiers circuits and switched-capacitor circuits.