Summary This article proposed a coordinated passivation control strategy with generator excitation, steam valve, and thyristor‐controlled series compensation to improve the stability of the power system. The d‐axis reactance and damping coefficients of the system are regarded as uncertain parameters, and the disturbances are also considered when selecting the model. First, under the condition that the control input is constrained, the system with main steam valve control and the fast steam valve is considered as two subsystems by introducing a switched strategy. Then, the disturbance attenuation controller of thyristor‐controlled series compensation is designed by an improved backstepping method, which can enhance the internal and external disturbance attenuation and get a better convergence rate. And the adaptive law of d‐axis reactance, damping coefficients are obtained at the same time. Next, the control input of two subsystems and generator excitation are designed via the coordinated passivation method. Finally, the effectiveness of the proposed control method is demonstrated by the simulation of a single machine infinite bus system.

The Russian Orthodox Church has been associated with China since the end of the 17th century, but the systematic study of the history of the Orthodox Church in Russia by Chinese scholars began only in the 1980s. This article examines the development of this field of research over the last 40 years. The author proposes to divide this process into 2 chronological periods: an initial stage and a stage of rapid development. The article summarizes in detail the results achieved by Chinese scholars in this field and briefly introduces the characteristics of the two stages. It is concluded that in the first stage (1980-2000) the works of Chinese scholars were introductory and descriptive, with the main purpose of understanding the Russian Orthodox Church as a whole. In addition, due to the special nature of political relations between China and the Soviet Union in the last century, the views of Chinese scholars of the first stage were strongly influenced by Soviet scholars. In the second stage (2001—present) Chinese scholars have greatly widened the perspective of their research, studied specific issues in greater depth, put forward more original ideas and achieved fruitful results. It should also be noted that there are still problems such as insufficient use of primary historical materials, over-concentration of research topics, and relatively weak research power, and its solution requires the joint efforts of scholars in the field.

This article improves the coordinated passivation control strategy of a single machine infinite bus system with generator excitation and thyristor controlled series compensation. First, in the traditional coordinated passivation control strategy, class − κ functions and an integral term are introduced to improve the convergence speed and reduce the steady‐state error of the system. Furthermore, an adaptive control method based on sliding mode is used to design adaptive laws for uncertain parameters and external disturbances and simplify the controller form. Finally, the simulation results show that compared with the traditional coordinated passivation method, the proposed controller has stronger robust adaptability and improves the convergence rate and transient performance of the system.