A power system restoration force calculation method and a system based on a black start and a load restoration process

Abstract

The invention relates to the technical field of power system restoration, and provides a power system restoration force calculation method and a system based on a black start and a load restoration process. The method comprises the following steps: identifying the state of the power system, obtaining the basic data for calculating the power system, and establishing a network connection matrix M corresponding to the system; Screening out the power plants of the available black-start units in the system, calculating the sum of the weighted capacities of all the available black-start units in each power plant and the corresponding standard values; generating a minimum spanning tree T1 containing all recoverable plant nodes, and calculating an average shortest distance D1 and an average shortest distance D2; calculating an average value D of D1 and D2; the ratio of standard value 1 to D of the weighted sum of the black-start unit capacity is calculated, which provides a quantitative methodfor evaluating and analyzing the restoring force of the power system after a large blackout accident on the basis of fully considering the black-start and load restoring process.

Description

technical field [0001] The invention belongs to the technical field of grid system recovery, and in particular relates to a grid recovery force calculation method and system based on a black start and load recovery 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 users were af...

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Problems solved by technology

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

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