Requirements for relay protection and automation applications of electric power stations, providing stability of their operation in electric power system

摘要

Requirements of Russian standards differ from the requirements of foreign standards in respect to permissible operation modes of generating equipment, set of protection devices, installed in electric power stations. These differences are stipulated by the difference in operating conditions of generation equipment. Therefore additional requirements are placed on generating equipment and protection devices of foreign makes. This paper includes examples of foreign equipment, protection algorithms and their configuration adoption to Russian standards' requirements, for example: 1. change in permissible operation duration of gas turbines at different frequency ranges; 2. modification of turbines technological automation function algorithms, providing their stable operation at standard disturbances; 3. generators excitation control algorithms modification to meet the requirements of Russian standards in respect to excitation boost and system stabilization; 4. modification of mobile gas turbine power plants governing algorithms to provide their participation in frequency regulation procedure. Requirements, presented in the paper, are aimed at increasing the operation stability of generating equipment of electric power stations and power system itself through the development of technical solutions to increase technical perfection of relay protection and its coordinated operation at all stages of fault modes in electric power system.