Development of Technologies to Simulate Power Flow for Power Grid

Energy problems are important social ones, and they cause many issues like electricity shortages and environmental impacts. Fujitsu Laboratories has researched and developed technologies to provide "social solutions" to such problems by using information and communications technology (ICT). Our group has been researching some energy management technologies, for example optimization technologies and prediction technologies for energy consumption and generation. In this paper, we introduce our development of a technology to simulate the power flow in a power grid. This simulation requires some special features compared with conventional power flow simulators, because the purpose of the simulation is mainly to carry out real-time monitoring of electricity in a grid. Therefore, we applied an algorithm called the backward-forward sweep method for high-speed processing, which is suitable for the typical Japanese grid model and has good scalability. And we also developed new equipment models (e.g., a distribution model, some transformer models, and a connection model) for this simulator.