Simulation method of integrated defense system for enhancing coal enterprise power system power supply reliability

A power system and simulation method technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the lack of unified standards, the characteristics of power equipment and power loads in the power system of enterprises are not simulated in detail, and coal mine enterprises are not fully considered Issues such as the impact on the safe and stable operation of the power system, to achieve the effect of expanding the depth and breadth, improving effectiveness, and ensuring normal production and operation

Active Publication Date: 2013-04-03
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0003] Although large-scale coal mining enterprises have a large power load, they can only be considered as a "load point" in the stability analysis of the national interconnected grid, and the characteristics of the power equipment and power load of the enterprise's power system have not been simulated in detail, nor have they been fully implemented. Considering the impact of internal and external power grid failures on the safe and stable operation of power systems in coal mining enterprises
In addition, the relay protection settin...

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  • Simulation method of integrated defense system for enhancing coal enterprise power system power supply reliability
  • Simulation method of integrated defense system for enhancing coal enterprise power system power supply reliability
  • Simulation method of integrated defense system for enhancing coal enterprise power system power supply reliability

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[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0042] A comprehensive defense system simulation method for improving the power supply reliability of a coal enterprise power system is provided, and the method includes the following steps:

[0043] Step 1: Determine the power supply mode of the power system of the coal enterprise; different power supply modes directly determine important reliability indicators such as the emergency plan when the power grid of the coal enterprise loses an external power circuit, and the time to restore power supply.

[0044] Step 2: Calculate and analyze the relay protection setting;

[0045] Step 3: Determine the control strategy for the safe and stable operation of the power system of the coal enterprise;

[0046] Step 4: Perform backup power switching;

[0047] Step 5: Take secondary measures.

[0048] In the step 1, the power supply mode includes one-use-one-standby m...

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Abstract

The invention provides a simulation method of an integrated defense system for enhancing coal enterprise power system power supply reliability, which comprises the following steps: determining a power supply mode of a coal enterprise power system; calculating and analyzing a relay protection setting value; determining the safe and stable operation control strategy of the coal enterprise power system; switching a standby power; and adopting auxiliary measures. According to the method, an overall, comprehensive and integrated assessment is carried out on the effectiveness of measures for enhancing the coal enterprise power system power supply reliability by a trend analysis, a short circuit current calculation, a static security analysis and a transient stability analysis.

Description

technical field [0001] The invention belongs to the technical field of power system time-domain simulation, and in particular relates to a comprehensive defense system simulation method for improving the power supply reliability of a coal enterprise power system. Background technique [0002] With the rapid development of the national economy, the scale of large-scale industrial and mining (such as coal fields, petrochemicals, steel and ports, etc.) The production process is interrupted, and the economic loss is huge. At the same time, the interaction between the enterprise grid and the public grid is becoming more and more significant. These enterprise internal grids and public grids have both common problems and their own unique features. It is necessary to establish simulation data of enterprise grids, and conduct in-depth research on the power supply mode, load characteristics, power supply reliability, power quality, and automatic control measures of internal enterpris...

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Application Information

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IPC IPC(8): H02J3/00H02J3/18H02J9/06
CPCY02E40/30
Inventor 张志强曹建平李晓珺付俊青唐晓骏秦晓辉马世英吴丽华杨海涛宋云亭郑超
Owner CHINA ELECTRIC POWER RES INST
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