Satoshi Takayama

Scheduled operation of wind farm with a battery-energy-storage system considering ramp events

Renewable energy such as wind generation is a countermeasure against global warming and fossil-energy resource depletion. However, wind-farm (WF) output fluctuates because of unstable wind conditio...

Fluctuation suppression control of wind power generation utilizing deterministic optimization method

Recently, wind power generation are installed as a countermeasure for the environmental issue in Japan. However, wind power generation output is fluctuated due to wind condition. Moreover, when a lot of wind power generation is installed in power system, it is some negative impact for system operation such as the economic load dispatching control and the load frequency control. In this paper, we proposed the output fluctuation suppression control method of wind power generation utilizing the energy storage system and output forecast data. Specifically, the target value of wind power generation is calculated to decrease the capacity of energy storage system using deterministic optimization method. However, if prospective wind power generation is unknown, the required capacity of energy storage system is increased. We proposed the decision method of target value utilizing the forecasting data. Moreover, error component is included in the forecast data. Accordingly, target value of wind power generation output considering the trend of forecast error is needed. Therefore, purpose of optimization is the reduction of energy storage system capacity and achievement of grid code. The effectiveness of proposed method is evaluated through the computational simulation using forecast data and wind power generation output in Japan.