This book brings together successful case studies on the practical use of state estimators at both the transmission and distribution system levels in the power industry. Contributions are written by an international group of utility industry experts who have designed and implemented state estimators for managing their grid operations in real-time, providing readers with a solid background in the theoretical and functional aspects of running, supporting, and maintaining the operation of state estimators on an ongoing basis. Experiences on Use of State Estimator in Power System Operations provides a comprehensive picture of state estimators in a practical setting and is a valuable hands-on reference for system operators and engineers who need to enhance their understanding of the use of state estimation in utility operations.