The invention discloses an
electricity-to-gas conversion-gas storage-gas
turbine capacity optimal configuration method and
system with wind curtailment participating in
power grid frequency modulation. According to the invention, an operation scene of producing
natural gas by utilizing abandoned wind through PtG is innovatively proposed, the
natural gas is stored through a gas
storage tank, poweris generated through a gas
turbine unit (NGGU) to participate in
frequency modulation, and a coordinated operation strategy of each device is proposed; then, according to the operation strategy, a cost-income model of the PtG, the gas
storage tank and the NGGU participating in the
frequency modulation process is constructed in the operation strategy, and capacity optimal configuration of each device is realized by taking maximization of net income as a target; finally, the actual wind curtailment of a certain
wind power plant and an actual issuing instruction of certain
automatic generation control (AGC) are taken as references; planning calculation is carried out through a
particle swarm optimization algorithm, and the economy and feasibility of participating in the frequency modulation auxiliary service of the
power market under the optimal configuration of PtG, gas storage and NGGU capacities by utilizing the wind curtailment and PtG technologies of the
wind power plant are analyzedthrough results.