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Typical fault set identification method for transient stability analysis of power system

A technique for transient stability analysis and power systems, applied to electrical components, circuit devices, AC network circuits, etc.

Active Publication Date: 2012-11-14
NARI TECH CO LTD
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Problems solved by technology

[0003] The purpose of the invention is to solve the problem of automatic identification of typical fault sets in power system transient stability analysis

Method used

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  • Typical fault set identification method for transient stability analysis of power system
  • Typical fault set identification method for transient stability analysis of power system
  • Typical fault set identification method for transient stability analysis of power system

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Embodiment Construction

[0011] Attached below figure 1 , the method of the present invention is described in detail.

[0012] figure 1 Step 1 in the above describes the quantitative analysis of transient stability, that is, for the same power grid operation mode, using the Extended Equal Area Criterion (EEAC) and the identification method of component participation factors in the power system transient security and stability mode, all faults in the fault set (fault The number is set to N) to conduct quantitative evaluation of transient stability, and obtain the stability mode of each fault, including transient stability margin, dominant grouping mode of generators and participation factors of each generator in the critical generator group.

[0013] figure 1 Step 2 in the above describes the calculation of the transient stability correlation index between each two different faults, that is, for all N(N-1) / 2 pairs of fault combinations in the complete set of faults, according to the two faults in eac...

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Abstract

The invention belongs to the technical field of power system computation and analysis and is applied to generating a typical fault set for transient stability analysis of a power system. The method comprises the following steps of: firstly, for the same power grid operation mode, performing the transient stability evaluation on different faults respectively by adopting a transient stability quantitative evaluation method to obtain a stability mode of each fault; secondly, calculating a transient stability association degree index between different faults according to a constitutive relation between the participation factor of the same generators in the transient stability critical generator set of every two faults and the participation factor of all the generators in the critical generator set; and finally, screening all the faults according to the transient stability association degree index between the faults. Therefore, the typical fault set for the transient stability analysis of the power system is obtained.

Description

technical field [0001] The invention belongs to the technical field of power system calculation and analysis. Background technique [0002] The calculation and analysis of transient stability of power system is the basis of studying the dynamic characteristics of power system. In order to fully grasp the transient stability characteristics of power system, it is necessary to perform transient stability calculation and analysis of various faults in power system. In order to quickly analyze the transient stability of the power system, it is necessary to analyze the transient stability correlation degree of the complete set of faults. typical set of failures. Since there is no calculation method for the correlation degree of power system transient stability under different faults at home and abroad, the current typical fault set is determined by power system calculation and analysis personnel based on engineering experience. Contents of the invention [0003] The purpose of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
Inventor 徐泰山鲍颜红李碧君杨卫东许剑冰薛峰方勇杰薛禹胜
Owner NARI TECH CO LTD
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