The Experience of Wide-Area Automatic Centralized Emergency Control System Coordination in Power Systems of Different Countries to Improve the Power System Stability

System of the Urals (IPS of the Urals). To solve stability issues of the IPS of the Urals – UPS of Kazakhstan – IPS of Siberia power transmission transits and optimise emergency control measures in synchronous operation of the UPS of Russia and the UPS of Kazakhstan from 2023 to 2025, the interaction between the

Wide-Area Centralized Automatic Emergency Control System (WCAECS) of the IPS of

Siberia and the WCAECS of the UPS of Kazakhstan was provided. This enabled a transfer of lists of control actions (LCA) from the top-level software and hardware system (top-level SHS) of the WCAECS of Siberia to the Local Automatics on Stability Fault Prevention (LASFP) device of the UPS of Kazakhstan. Under the current network topology and load conditions, this: 

 raised the values of admissible power flows in transit controlled sections, which do not require control actions in post-emergency states; minimised the values of implemented control actions on generating units shedding in the UPS of Russia and the UPS of Kazakhstan during faults on transmission lines in the

IPS of the Urals – UPS of Kazakhstan – IPS of Siberia transit corridor. In 2024, the successful tests checking the connection of the LASFP device of the SS 1150kV

Ekibastuz to the control system of the top-level SHS of the WCAECS of the IPS of Siberia that included the transfer of control actions through the top-level SHS of the WCAECS of the UPS of Kazakhstan were conducted; these tests were followed by periods of pilot and commercial operation. In particular, relevant changes were introduced to standards and procedures, and an international dispatch training was held to coordinate the interaction of the dispatch and operating personnel of System operator of Russia and System operator of Kazakhstan.

This paper outlines the deployment principles and specifics of the WCAECS of the UPS of

Russia, operating mechanics and computational model description of the WCAECS of the IPS of Siberia, the process of connecting the LASFP device of the SS 1150 kV Ekibastuz to the control system of the top-level SHS of the WCAECS of the IPS of Siberia that included the transfer of control actions through the top-level SHS of the WCAECS of the UPS of

Kazakhstan, and the impact of expanding WCAECS of the IPS of Siberia into a part of the UPS of Kazakhstan.