Method for constructing vulnerability evaluation model based on multi-heterogeneous RES-containing power grid

Abstract

The invention discloses a construction method and device based on a multi-heterogeneous RES-containing power grid vulnerability evaluation model, computer equipment and a storage medium. The construction method comprises the following steps: constructing comprehensive characteristic parameters for measuring a power grid model; and according to the comprehensive characteristic parameters of the power grid model, constructing an actual power grid model which has dynamic characteristics and contains the multi-heterogeneous RES and the time-varying load. The method comprises the following steps: constructing a power grid node / branch vulnerability evaluation index system with dynamic characteristics based on an actual power grid model which has the dynamic characteristics and contains a multi-heterogeneous RES and a time-varying load; and constructing a power grid overall vulnerability index evaluation system. By comprehensively analyzing the influence of the multi-heterogeneous RES and the dynamic characteristics of the variable load on the comprehensive vulnerability evaluation index, a power grid vulnerability comprehensive evaluation model based on the dynamic characteristics is constructed.

Description

technical field [0001] The present application relates to the technical field of power system security, and in particular, to a construction method, device, computer equipment and storage medium based on a vulnerability assessment model of a power grid containing multiple heterogeneous RES. Background technique [0002] Modern smart grids are connected to a large number of multi-heterogeneous RES (renewable energy) power generation systems such as wind power and photovoltaics. The types and number of grid components are increasing, and the user's demand makes the load change over time. All parts of the system are connected with each other. It is more compact and the operation process is more complex and changeable. [0003] Due to the rapid growth of multi-heterogeneous RES power generation technologies such as wind power and photovoltaics and their increasing penetration in the power grid, RES power generation has become an important part of the power network. However, aff...

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Problems solved by technology

However, affected by the environment and the characteristics of new energy sources, RES output has many complex characteristics such as time-varying, dynamic, random, and decentralized heterogeneity, which have a non-negligible impact on the grid structure and its power flow. For example, when RES power generation output When fluctuations occur, the grid power flow also changes

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