A Resilience Evaluation Method for Electric-Gas Regional Integrated Energy System
An integrated energy system and regional technology, applied in the field of electricity-gas regional integrated energy system resilience assessment, can solve the problems of loss of meaning, extreme situations in weight distribution, and high sensitivity of index differences, and simplify topology modeling and faults. Analysis, easy fault propagation analysis, scientific and accurate effect
Active Publication Date: 2022-06-03
XIANGTAN UNIV
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The entropy weight method is an objective weighting method, but the sensitivity to the index difference is too high, which may easily lead to extreme situations in the weight distribution. When the index weight is too small, the meaning of the evaluation index will be lost.
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[0074] The method for evaluating the elasticity of the electricity-gas regional integrated energy system based on the heterogeneous interdependence network, as shown in Figure 1, includes such as
[0079] From the extreme event-oriented elasticity, including two dimensions of vulnerability and resilience, set up electric-gas regional integrated energy
[0081] Definition node degree is the number of edges directly connected to the node:
[0082] K
[0085]
[0088]
[0091]
[0094]
[0100] Based on the dependency network and the heterogeneous network, define a two-layer heterogeneous dependency network: a heterogeneous dependency network consisting of two
[0107] Under the disturbance of extreme events, it is considered that 100% of the faulty elements in the system are damaged; if the damaged node is the node
[0108] Traditionally, the maximum connected subset is used as the index of node survival, and the possibility of island survival is not considered.
[0113]
[0115]
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The invention discloses a method for assessing the elasticity of an electric-gas regional comprehensive energy system based on a heterogeneous dependency network. 1) From the two dimensions of extreme event-oriented resilience including vulnerability and resilience, an index system for the elasticity of an electric-gas regional comprehensive energy system is constructed , including establishing 5 indicators to quantify the elasticity of the electricity-gas regional integrated energy system, and defining each elasticity index in plural form; 3) Use the geometric mean G1-anti-entropy weight method to determine the weights of the five indicators, and calculate the comprehensive elasticity value of the system to realize the elasticity assessment of the electric-gas regional comprehensive energy system. This method takes into account the dependence and heterogeneity of the power grid and the natural gas grid, and is convenient for fault propagation analysis. At the same time, it takes into account the subjective and objective weights of the indicators, and can scientifically and effectively quantify and evaluate the elasticity of the electricity-gas regional integrated energy system.
Description
A Resilience Assessment Method for Electric-Gas Regional Integrated Energy System technical field The present invention relates to the technical field of integrated energy system engineering, especially relate to the electric-gas regional integrated energy system projectile [0001] Sexual assessment methods. Background technique According to the spatial scale and system scale, integrated energy system (integrated energy system, IES) mainly Including 3 types: cross-regional level, terminal and regional integrated energy system. Electric-gas district integrated energy system consists of electric power system, It is composed of natural gas system and energy center, which mainly realizes the distribution network, gas distribution network, regional energy center and other districts within the region. Complementary support between domain energy systems. Resilience includes defense against and under an intentional attack, accident, naturally occurring threat or event Res...
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IPC IPC(8): G06F30/20G06Q10/06G06Q50/06G06F113/04
CPCG06F30/20G06Q10/06393G06Q50/06G06F2113/04Y02P90/82
Inventor 彭寒梅刘子威王维首彭紫洁贺玮煜
Owner XIANGTAN UNIV