Including HVDC in Power System State Estimation Under Mixed Measurement Environment

• Grant number: 24/21574-0
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: May 05, 2025
• End date: April 04, 2026
• Field of knowledge: Engineering - Electrical Engineering - Power Systems
• Principal Investigator: Joao Bosco Augusto London Junior
• Grantee: Vitor Henrique Pereira de Melo
• Supervisor: Dirk Van Hertem
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: Energyville, Belgium
• Associated to the scholarship: 22/09203-0 - Design of a State Estimator for Electric Power Systems for the New Paradigms of Operation, BP.DR

Abstract

The State Estimator (SE) uses the available real-time measurements of an Electrical Power System (EPS) to provide reliable estimates of the current value of its state variables, which are fundamental inputs for various analyses that guide real-time operation. Although its use has been consolidated in control centers worldwide, its formulation has to be revisited in the context of actual EPS. During the last decades, there has been increasing use of High-Voltage Direct Current (HVDC) devices in modern networks, which can improve the overall performance of an EPS and provide paths to achieve operational flexibility. However, based on power electronics, these devices alter the network behavior and can make its operation more complex. To best use these components, power systems operators must monitor them precisely and understand how they interact with the rest of the Alternating Current (AC) network. Therefore, new SE formulations must be able to capture the behavior of HVDC devices.Moreover, the crescent penetration of renewable resources has also increased the complexity of modern networks, challenging real-time operation and creating the need to improve the reliability of the SE's responses. Fortunately, with the increasing digitalization of substations, the quality and quantity of real-time measurements have improved. New technologies, such as Phasor Measurement Units (PMUs), offer new possibilities for the state estimation process. Thus, this research project aims to develop SE formulations compatible with the current conjuncture of EPSs, which can capture the behavior of modern AC/DC networks, maintaining the requirements of this real-time monitoring tool, and can leverage the increasing presence of PMUs to improve the quality and reliability of the estimates.