New energy has penetrated power grid companies on a large scale, affecting the cost of power grid planning, operation scheduling, overhaul, and maintenance, etc. However, the impact of different types of new energy power sources on power grid costs is complex and diverse, making it difficult to accurately quantify the impact of new energy penetration on the entire cost chain of the power grid. For this reason, based on system dynamics, this study constructs a full cost chain model of the power grid under the penetration of new energy, and quantitatively analyses the impact of penetration of new energy on the full cost of the power grid under different scenarios. Finally, the correctness of the model is verified through case analysis, and the optimal penetration under different new energy penetration scenarios is obtained, which provides managers with a basis for decision-making, and ultimately maximize the benefits of power grid companies.
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