The reliability of the parallel operation of generation equipment and the functioning of the power system as a whole depends on the effectiveness of automatic excitation regulators (AER) and excitation systems (ES) of synchronous generators at power plants. The SO-UPS elaborated, approved, and enforced the standard Requirements to Excitation Systems and Automatic PD Excitation Regulators of Synchronous Generators, which extends and supplements the requirements to ESs and AERs established by the technical regulations currently in force. A system regulators monitoring system is being developed.Importance of the problem and the challenges it presents. The UPS of Russia is a wide-area synchronous grid intended for the transmission of electricity produced by main generation capacities along long-distance interconnections from suppliers to consumers. Interconnection and sometimes backbone transmission lines that have inadequate transmission capacity may cause weakly damped low-frequency electrical oscillations (at a frequency of 0.05 to 5 Hz) in the power system. Such oscillations reduce the static and transient stability margins and may disorder the parallel operation of power plants and power systems and cause desynchronization and cascading failures. Moreover, such oscillations in one part of an interconnection are periodic disturbances for another part where they may cause oscillations, instability, and other adverse effects.The stable parallel operation of generation equipment and the damping properties of the power system depend on the characteristics and settings of the automatic excitation control systems for synchronous power generators, reactive power compensation means at the substantions of the supergrid, DC power transmission lines, and DC links. Since the influence of reactive power compensation means, DC links, and DC transmission lines on the operation of the UPS of Russia is insignificant, the excitation systems (ES) and automatic excitation regulators (AER) of synchronous generators at power plants have the major effect on the damping properties of the UPS.

The features of an algorithm for choosing the controlling actions to maintain static stability in a centralized system of a new generation of antiemergency automation is discussed. This algorithm is directed towards modern software-hardware systems and enables problems of automatic antiemergency control to be solved using the well-known classical description of processes in power systems, which makes it more flexible and universal. The centralized system of antiemergency automation with the algorithm presented in the paper has been introduced and functions successfully in the Vostok power system.A new generation of centralized antiemergency automation system. The systems operator and technical center of the Unified Power System JSC has organized the development of a new generation of this system. The main problems are as follows:-to operate the algorithm using additional computational methods, ensuring that it was transparent, accessible, and that it could be used to solve different theoretical problems;-to develop an algorithm and software for choosing the controlling actions (CA) to ensure stability in the dynamic phase of the transient;-to ensure maximum universality, i.e. the possibility of using it in power circuits of any configuration; -to increase the speed of response of the antiemergency automation system by changing to a parallel calculation of the triggering devices.The rejection of nontraditional methods of calculation, and also the extension of the region in which the system operated, as a result of the choice of the controlling action to ensure stability in the dynamic phase of the transient, required a radical redevelopment of the technological algorithm, and also of the software using new technical developments in the area of computational techniques and telecommunications.The possibility of constructing a new generation of centralized antiemergency automatic systems was based on the availability of new computational techniques (primarily new processors), and the increase in the quality of the systems for the acquisition and transmission of teledata in power systems and experience in using centralized antiemergency automation systems of the previous generation. Despite these prerequisites and, it would seem, a more obvious approach to constructing a technological algorithm using traditional methods, when developing the algorithm considerable difficulties were encountered, and the construction of the centralized system based on a new generation of algorithms required a considerable amount of time.The new algorithms of the centralized system, developed at the Scientific and Technical Center of the Unified Power System, used modern software-hardware systems, and were able to formulate and solve problems of automatic antiemergency control based on the well-known classical description of processes in power systems.In this paper we present an algorithm for estimating the aperiodic static stability and calculating the controlling actions to ensure the standard reserve of active power in the calculated d...

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