One reason that this result is so widely used is that the result is invariant to the choice of model structure. There is only one problem - the result is wrong. The talk will illustrate this incorrectness by identifying where the theoretical derivation of it breaks down, and also by illustrating via numerical example that the results it gives are incorrect. To finish, a new corrected expression will be given that is not subject to the same flaw in its theoretical derivation, and which also accords well with numerical simulation. In this seminar, the characteristics and the causes of voltage sags will be briefly introduced, their possible mitigation methods will also be discussed.
Static condensers are the new generation of SVCs.
Study results of the voltage sag mitigation effect of a laboratory static condenser will be presented and discussed. In this joint work with Peter Zhivoglyadov, we look at a certain mixture of continuous and discrete state systems. For the class of systems considered, we define a hybrid stability notion, and we are able to give necessary and sufficent conditions for hybrid stability. The use of the gap metric approach for decentralized control system design will be demonstrated with a case study of a process plant. Physical insights have be en gained by the use of this technique that has aided the design of the process, as well as the control system performance.