Power grid chain accident disaster prediction model modeling method based on CIM standard

Abstract

Provided is a power grid chain accident disaster prediction model modeling method based on the CIM standard. The method comprises the steps that the steady-state power flow, critical-state power flow and index alphaij<(p)> of a power grid in normal running are calculated, and p=0; a fault is selected, and p=1; (30), the steady-state power flow and critical-state power flow of the p-grade fault are calculated; whether branch power flow exceeds the limit or a node is in low voltage or not is judged, if the branch power flow exceeds the limit or the node is in low voltage, the step (30) is repeated after loads are removed according to a set value, and otherwise the step (50) is executed; (50), a high-risk branch set VH under the current weather condition is formed; whether a branch with the icing rate phiij larger than 0.7 exists in VH or not is judged, and if yes, the step (70) is executed, and otherwise the indexes Cij<(p+1)> of all the branches are calculated, the branch of Min{Cij<(p+1)>}is selected as a lower-grade fault, and the step (90) is executed; (70), the Eij, Bij and alphaij<s> of each branch in VH are calculated, Cij<(p+1)> is calculated, and the branch of Min{Cij<(p+1)>}is selected as the lower-grade fault; (90), whether searching is finished or not is judged, if yes, a sequence result is output, and otherwise, the step (30) is repeated. According to the method, the correlation influence between risk chains is provided.

Description

technical field [0001] The invention relates to electric power information management technology, in particular to a modeling method of a power grid cascading accident disaster prediction model based on the CIM standard. Background technique [0002] In the study of "Reliability Evaluation Model and Algorithm for a Class of Chain Reaction Accidents in Complex Power Systems", it studied the model for evaluating chain reaction accidents in complex power systems. Combining the structure of the substation with the system grid, a unified component model for the analysis of chain reaction accidents in complex power systems is established, and a new relay protection model for reliability evaluation is proposed, which can reflect relay protection faults to open circuits In the model of the relay, the impact of relay protection is included in the evaluation. On this basis, a set of evaluation algorithms for complex power system chain reaction accidents is developed, including fault ...

AI Technical Summary

Problems solved by technology

For the algorithm of trivial accidents, the secondary risks and impacts of local environmental factors on the accident cannot be considered according to local conditions, and the derivative risks after the resolution of related accidents are not taken into consideration, so that the calculation results in the algorithm The risk value is smaller than what actually happened, and the impact of trivial events cannot be predicted relatively accurately

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