Study on Grid-Based Seamless-link Hybrid Simulation System for Power Networks

Simulation has been proved to be a necessary and effective tool for the study and analysis of modern power system. In area interconnected power networks, large-scale real time simulations have become essential. Both dynamic simulation (also known as physical simulation) and digital simulation (also called as mathematical simulation) have strong and weak points. Based on the complementarities of dynamic simulation and digital simulation, hybrid simulation system can complete accurate and flexible simulations of limited-scale power networks. However, users may face some difficulties when simulation scale exceeding the limitation. Grid computing can be introduced to resolve the problem. In this paper a seamless-link method of hybrid simulation system based on grid computing is presented, which comprises a dynamic simulation system interfaced with the real-time digital simulator (RTDS). At the same time, it can utilize distributed computing resource for enlarging the scale of simulation to sufficiently robust to adapt simulation behavior as required.