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Method for analyzing large-scale power system comprising parallel lines

A large-scale power, parallel line technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as inability to adapt to large-scale power system analysis

Inactive Publication Date: 2012-09-05
EAST CHINA ELECTRIC POWER TEST & RES INST
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Problems solved by technology

Therefore, the parallel line parameter calculation method in the prior art cannot be adapted to the analysis of large-scale power systems with parallel lines

Method used

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  • Method for analyzing large-scale power system comprising parallel lines
  • Method for analyzing large-scale power system comprising parallel lines
  • Method for analyzing large-scale power system comprising parallel lines

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Embodiment Construction

[0016] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below taking a double-circuit transmission line as an example.

[0017] see figure 2 , figure 2 It is a flow chart of the analysis method of the large-scale power system including parallel lines of the present invention. The analysis method of the large-scale power system containing parallel lines of the present invention comprises the following steps:

[0018] Input power system parameters, the power system is a large-scale power system. Preferably, the power system parameters include parameters such as parallel line tower type parameters, spacing parameters, and wire type parameters.

[0019] The theoretical calculation parameters of the parallel lines of the large-scale power system are obtained. Preferably, using the power system parameters, the theoretical calculation parameters of the parallel lines are o...

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Abstract

The invention relates to a method for analyzing a large-scale power system comprising parallel lines. The method comprises the following steps of: inputting parameters of the power system; calculating theoretical calculation parameters of the parallel lines; calculating middle parameters of theoretical calculation of the parallel lines by using an averaging method according to variation of the parameters; calculating simplified sequence parameters of the parallel lines according to variation of a phase sequence; and analyzing the power system by using an electromechanical transient method. Positive, negative and zero sequence parameters (obtained by the method for analyzing the large-scale power system comprising the parallel lines) of the simplified sequence parameters of the parallel lines are decoupled and are irrelevant to a phase position and can be directly used for analyzing the large-scale power system; and main characteristics of the detail sequence parameters are retained, so that the precision is guaranteed to a certain extent.

Description

technical field [0001] The invention relates to an analysis and calculation method of a power system, in particular to an analysis method of a large-scale power system with parallel lines. Background technique [0002] There is a complex coupling relationship between the parameters of parallel multi-circuit transmission lines, not only the coupling between the three lines of each circuit, but also the coupling between the three lines of each circuit and the three lines of other circuits. The traditional analysis method of parallel line power system mainly relies on electromagnetic transient analysis by establishing detailed parameters reflecting the coupling relationship of parallel lines. [0003] see figure 1 , figure 1 It is a flow chart of a prior art analysis method for a parallel line power system. The analysis method of the parallel line power system in the prior art mainly includes the following steps: input parameters such as parallel line tower type, spacing, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G06Q50/06
Inventor 祝瑞金杨增辉余颖辉仇成
Owner EAST CHINA ELECTRIC POWER TEST & RES INST
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