Method, system, device and medium for inhibiting global operation risk of ac-dc distribution network

Abstract

The present application belongs to the field of probability optimization of power distribution network, and discloses a global operation risk suppression method, system, equipment and medium for AC / DC power distribution network, which comprises the following steps: constructing a probability distribution function of node injection power; establishing a linear mapping relationship between the probability distribution of node injection power in the AC / DC power distribution network and the probability distribution of operating state variables, and obtaining the probability distribution of steady-state power flow of the AC / DC power distribution network; quantifying the influence of the adjustment amount of deterministic power on the probability distribution of steady-state power flow of the AC / DC power distribution network to obtain the probability sensitivity matrix of deterministic power of the AC / DC power distribution network; taking the minimum over-limit risk of power flow of the AC / DC power distribution network as the optimization objective, and constructing a random optimization model of the AC / DC power distribution network; and suppressing the global operation risk of the AC / DC power distribution network according to the optimal solution of the random optimization model of the AC / DC power distribution network. The global optimization and risk suppression of large-scale interconnected AC / DC system are realized.

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