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

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...

AI Technical Summary

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 setting software and safety automatic devices currently used in the power system of coal mining enterprises are varied, lacking a unified standard, and are all set from the perspective of the protection equipment itself, rather than ensuring the safe and stable operation of the power system of coal mining enterprises Considering the mutual cooperation between various relay protection settings from the perspective of comprehensive consideration, it is difficult to ensure the long-term stable operation of the power system of coal mine enterprises

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