A method and system for calculating power grid resilience based on load recovery process

Abstract

The present invention relates to the technical field of power grid system recovery, and provides a method and system for calculating power grid resilience based on the load recovery process. The method includes: identifying the state of the power grid system, obtaining and calculating the basic data of the power grid system, and using Based on the obtained basic data of the power grid system, establish a weighted network connection matrix M corresponding to the system; take the generalized black start unit node generated by aggregation as the root node, and generate a minimum spanning tree including all recoverable plant nodes T1; Calculate the sum W of the weights of the edges contained in the minimum spanning tree T1 and the number N of nodes in the minimum spanning tree T1 except for the generalized black start unit nodes, and calculate the ratio of the sum W of the weights to the number N of nodes, so that On the basis of considering the load recovery process, it provides a quantitative means for evaluating and analyzing the power grid resilience after a blackout accident in the power grid system.

Description

technical field [0001] The invention belongs to the technical field of power grid system restoration, and in particular relates to a method and system for calculating power grid restoration force based on a load restoration process. Background technique [0002] The continuous progress of power grid system operation defense technology and equipment manufacturing technology cannot always keep up with the eradication of large-scale power outages. The large-scale power outages at home and abroad in the past ten years have fully demonstrated this point. For example: On August 14, 2003, the most serious power outage in North American history occurred. The power outage affected many areas in the United States and Canada, with a loss load of 61.8GW and a population of 50 million; November 2006 On the 4th, a major power outage occurred in the European interconnection grid, and Germany, France, Italy and other countries lost a total of about 16 million kW of load, and 15 million user...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for calculating power grid resilience based on the load recovery process, aiming to solve the problem that the research on power grid resilience in the prior art is still in its infancy, and the evaluation theory and evaluation indicators of power grid resilience are still in a low-level stage , the research on power grid resilience lacks an important theoretical basis, and there is even a lack of guidance on power grid system disaster prevention and mitigation planning and operation cornerstones

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