Method for improving element vulnerability of electricity-gas comprehensive energy system

A comprehensive energy system and vulnerability technology, which is applied in the field of power system and comprehensive energy system, can solve problems such as component analysis and poor improvement of system component vulnerability

Active Publication Date: 2020-07-24
ZHEJIANG UNIV
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Problems solved by technology

However, these methods do not analyze the components in the system, resulting in poor improvement of the vulnerability of system components
In addition, the current research method only considers the scenario where the power system operates independently, and does not con

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  • Method for improving element vulnerability of electricity-gas comprehensive energy system
  • Method for improving element vulnerability of electricity-gas comprehensive energy system
  • Method for improving element vulnerability of electricity-gas comprehensive energy system

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specific Embodiment

[0117] The specific embodiment that implements according to the complete method of content of the present invention is as follows:

[0118] Taking the electricity-gas integrated energy system composed of IEEE30-node power system and Belgium 20-node natural gas system as an example, the specific implementation of the present invention will be described in detail in combination with technical solutions and accompanying drawings.

[0119] Such as figure 1 As shown, the IEEE 30-node power system includes 7 generator sets and 41 power lines, and the Belgian 20-node natural gas system includes 6 gas source equipment and 19 natural gas pipelines. Let the generating sets on the grid nodes 5, 7, 8, 11, and 13 be gas-fired generating sets, and the natural gas fuels are supplied by the natural gas nodes 3, 12, 6, 10, and 15 respectively, and the remaining generating sets are conventional generating sets. Let the gas sources on the natural gas nodes 1, 2, 5, and 8 depend on the grid powe...

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Abstract

The invention discloses a method for improving the element vulnerability of an electricity-gas comprehensive energy system. The method includes: inputting original data, and establishing an electricity-gas comprehensive energy system operation state model to obtain an operation result in an initial normal state; extracting a network topology structure of the comprehensive energy system, and performing processing to obtain structural vulnerability parameters of the elements; simulating an element fault to obtain an operation result of the system in a fault state; obtaining the gas flow distribution entropy of the natural gas system and the power flow distribution entropy of the power system, and obtaining the operation vulnerability parameter of the element; and calculating the weight of each parameter by using an optimal combination weight method to obtain the comprehensive vulnerability of the element. According to the method, key protection can be rapidly carried out on the element with high vulnerability, the reliability of the element is improved by thickening the power line and reinforcing the natural gas pipeline, the overall operation reliability and robustness of the systemare effectively improved, and the probability of large-area faults of the system is reduced.

Description

technical field [0001] The invention belongs to the technical field of electric power system and integrated energy system, and relates to a method for improving the vulnerability of electric-gas integrated energy system components under the condition of deep coupling between electric power system and natural gas system. Background technique [0002] In recent years, with the gradual increase in the proportion of natural gas power generation and the application of grid-powered gas source equipment, the coupling operation of natural gas systems and power systems has become increasingly tight. Obviously, the interdependence and mutual influence of the natural gas system and the electric power system will increase the vulnerability of the electric-gas integrated energy system. On the one hand, the outage of the natural gas pipeline in the natural gas system may lead to the interruption of the natural gas fuel supply of the gas-fired units, which will further cause insufficient p...

Claims

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Application Information

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IPC IPC(8): G06F30/20H02J3/00H02J3/06G06F119/02
CPCH02J3/00H02J3/06
Inventor 丁一桑茂盛包铭磊
Owner ZHEJIANG UNIV
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