Voltage control refers to the management of electrical voltage levels in a power system to ensure stability and reliability. It involves adjusting the voltage to maintain it within a specified range, which is crucial for the proper functioning of electrical devices and equipment. Methods of voltage control include the use of transformers, capacitors, and voltage regulators. These devices help to either increase or decrease voltage levels as needed, preventing issues such as equipment damage or power outages. Effective voltage control is essential for the overall efficiency of the electrical grid.