The present invention provides an SVC and TCSC coordinated configuration method for improving system operation economy under a steady state condition. The SVC and TCSC coordinated configuration method is based on physical equivalence models of an SVC and a TCSC and comprises: calculating and selecting configuration locations of the SVC and the TCSC by initial load flow, establishing an optimization mathematical model and an optimization algorithm model which meet system operation economy indices under the steady state operation condition, and determining an optimized configuration scheme by calculating transmission losses before and after optimization. The SVC and TCSC coordinated configuration method can be used for theoretical analysis and simulation analysis of a power system, the SVC and TCSC coordinated configuration method suitable for a random power grid under the steady state condition is given, and the SVC and TCSC coordinated configuration method is beneficial for power system running analysts to reasonably arrange operating parameters of the SVC and the TCSC, and the characteristics of improving a system load flow and improving the power system operating economy of an FACTS device are sufficiently played.