High-frequency cutting machine simulation configuration method based on frequency characteristics of regional interconnected power grid

A technology of regional interconnection and high-frequency cut-off, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as high-frequency, steam turbine overspeed protection, etc., and achieve the effect of improving configuration efficiency and ensuring safe and stable operation

Active Publication Date: 2015-01-07
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, with the development of large-scale power supplies and the commissioning of UHVDC, the regional interconnection grid has obvious characteristics of power transmission. Turbine overspeed protection action

Method used

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  • High-frequency cutting machine simulation configuration method based on frequency characteristics of regional interconnected power grid
  • High-frequency cutting machine simulation configuration method based on frequency characteristics of regional interconnected power grid
  • High-frequency cutting machine simulation configuration method based on frequency characteristics of regional interconnected power grid

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Embodiment Construction

[0092] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0093] Such as figure 1 , the present invention provides a high-frequency cut-off simulation configuration method based on the frequency characteristics of regional interconnected power grids, the method comprising the following steps:

[0094] Step 1: According to the grid structure of the regional interconnection grid, establish the simulation data model of the regional interconnection grid, and determine the fault set of high-frequency cut-off simulation configuration by analyzing the topology structure and power flow distribution of the regional interconnection grid;

[0095] Step 2: According to the frequency characteristics of the regional interconnected grid, determine the simulation configuration principles for the high-frequency cut-off of the regional interconnected grid;

[0096] Step 3: Establish a single-machine single-load model and verify the ...

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Abstract

The invention provides a high-frequency cutting machine simulation configuration method based on frequency characteristics of a regional interconnected power grid. The high-frequency cutting machine simulation configuration method is based on the characteristics of frequency feature, a topological structure, power balance and the like of an interconnected system, determines the basic configuration principle of a high-frequency cutting machine, and then establishes a single-machine load model to perform detailed configuration on an optimal cutting machine frequency section, minimum cutting machine capacity, cutting machine rounds, cutting machine delay, cutting machine proportions of cutting machine rounds and other parameters. The high-frequency cutting machine simulation configuration method has the advantages of being good in adaptability, comprehensive in considered factors, reasonable in scheme and the like.

Description

technical field [0001] The invention relates to a configuration method, in particular to a high-frequency cut-off simulation configuration method based on the frequency characteristics of regional interconnected power grids. Background technique [0002] At present, my country still maintains the pattern of UHV AC interconnected power grids, and the frequency stability of large-scale regional interconnected power systems has been receiving much attention. Frequency emergency control and a third line of defense are required to maintain system frequency stability. [0003] The research on frequency characteristics of large-scale interconnected systems is mainly carried out from two perspectives: load model and unit primary frequency regulation. For the low-frequency load shedding scheme of large-scale interconnected regional power grids, many scholars have done a lot of research. At present, the engineering practical research on the high-frequency cut-off scheme in China is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 张志强唐晓骏徐友平徐遐龄秦晓辉吴丽华王青郑超张彦涛宋云亭李晓珺
Owner STATE GRID CORP OF CHINA
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