Electrical energy is conserved at every stage of the process of generating, transmitting, distributing and even using electrical energy. It can be said that the electric utility industry is probably the largest and most complex industry in the world and therefore very complex and challenging problems that need to be handled by power engineering. This document provides an overview of the tools for operating, controlling and managing energy systems.1. INTRODUCTIONElectric energy is an essential ingredient for the industrial and overall development of any country. It is generated centrally in large quantities and transmitted economically over long distances. Electrical energy is conserved at every stage of the process of generating, transmitting, distributing and even using electricity. It can be said that the electric utility industry is probably the largest and most complex industry in the world and therefore very complex and challenging problems that need to be handled by energy engineering in particular, to design the future energy system capable of providing quantities increasing amounts of electricity. The operation of the energy system and its control play a very important task in the world of electrical engineering. The ultimate goal of the energy system is to provide electricity economically and reliably from generators to loads. Nowadays, energy systems are large, very complex, ever-changing structures that are expected to respond continuously in real time.() Electricity must be produced and supplied when requested by a load. Therefore power outages are not acceptable and the system must also tolerate sudden outages caused by equipment failure or weather conditions. And the system should also work as economically as possible, with sales and transactions carefully monitored... middle of paper... the fire rotation system will start to slow down. Since it would be harmful to let the equipment slow down too much, something would have to increase the mechanical torque Tmech to restore balance and bring the rotation speed back to an acceptable value and the torques to equality so that the speed is again kept constant. The process should be repeated constantly on a power system because the loads are constantly changing. Furthermore, since there are many generators supplying power to the transmission system, some vehicles should allocate load changes to the generators. To achieve this, a number of control systems are connected to the generator units. A governor on each unit maintains its speed while additional control, usually originating from a remote control center, acts to allocate generation. Figure 4.2 shows an overview of the generation control problem.