Development of Power Supply-Demand Balance and Frequency Simulation Models of All TSO's Control Area in Japan

Abstract

In order to realize more efficient procurement and activation of control reserves, the balancing market is going to be established in 2021 in Japan. As for Synchronized Frequency Restoration Reserve (S-FRR) that is called automatic Frequency Restoration Reserve (aFRR) in Europe and is operated continuously and automatically by load frequency control (LFC), the control logic and control cycle are different in each transmission system operator (TSO)'s control area. Therefore, it is necessary to identify the technical challenges and to study countermeasures for cross-regional operation of S-FRR based on computer simulations.

For the above reason, the power supply-demand and frequency simulation models of all TSO's control area were developed in this research. Each TSO's control area model consists of LFC system model and power plant models. LFC systems were modeled in detail based on the actual specifications, and power plant models were constructed based on the IEEJ AGC 30 model. In addition, cross-regional interconnected system models which consist of each TSO's control area system model and tie-line models were developed. The developed models were validated thorough the comparison between simulation results and measured data of frequency, tie-line power flow, area requirement (AR) and generator outputs.