Because to date we have not discovered economic methods of storing large quantities of electrical energy, the proper operation of Electrical Power Systems (EPS) requires the continuous regulation of the generated real and reactive power to cover the continuous changes in load and losses. Beyond other difficulties, ensuring this continuous balance is disrupted by various disturbances, the most significant of which are short circuits. The reliable operation of EPS under these conditions is examined and interpreted in this book to facilitate their design for operation under all adverse conditions. Although the book's emphasis is on understanding and analyzing the basic problems of EPS, the development of the topics is complemented by the description of the methodology for analyzing EPS with a Computer, which is necessary due to the size of EPS.

An essential supplement to understanding the issues related to the Control and Stability of Electrical Power Systems (EPS) is the problems and their solutions found in the appropriate chapters. For the best possible result, the reader of the book should refer to the solution of the problems only to confirm the correctness of their own solution or if their own efforts to solve it were unsuccessful. The problems solved have been selected to clarify the significant issues that arise when solving the difficult problems of EPS. Their goal is to convey to the engineer the methodology of thinking for solving problems with traditional and modern methods.