Source–Grid Coordinated Optimal Control Strategy Integrating Green Power Tracing and Power Flow Sensitivity

To coordinate local green power absorption and key section power flow stability in high‐penetration renewable grids, this paper proposes a source–grid coordination strategy integrating green power tracing and DC power flow sensitivity. A green power distribution matrix with a path priority coefficient is built to quantify green power supply paths and prioritise absorption, and a DC power flow sensitivity matrix is established for accurate grid regulation. A dual‐objective optimisation model (minimising power flow volatility, maximising green power absorption) is formulated and solved via convex optimisation. Year‐round simulations on the IEEE 11‐bus system and Yancheng's actual grid verify the strategy effectively suppresses power flow volatility, raises green power absorption rate, resolves the dilemma of curtailing renewables for stability and offers a new optimisation method for high‐renewable grids.