Evaluative analysis method for static security check of large-scaled power grid

Abstract

The invention provides an evaluative analysis method for static security check of a large-scaled power grid. The method includes the steps of 1, determining a field device to be evaluatively analyzed and acquiring planned power flow data and historical operational data of the field device; 2, performing day-ahead active analysis and day-ahead line planned power flow deviation analysis according to the planned power flow data and the historical operational data. Compared with the prior art, the method is applicable to generation scheduling, bus load prediction and line planned power flow deviation statistics and is simple and good in practical effect.

Description

technical field [0001] The invention relates to an evaluation and analysis method for a power grid, in particular to an evaluation and analysis method for static safety check of a large-scale power grid. Background technique [0002] The current static security check is an important functional application of the dispatching planning subsystem of the new generation of smart grid dispatching support system. The power grid topology performs safety check calculations on the proposed power generation plan or maintenance plan, and performs safety corrections within the adjustable range based on the overload information, thereby forming a closed-loop operation mechanism of the dispatch planning subsystem based on safety constraints. [0003] The current backbone network voltage levels generally include 220kV and 330kV. The power flow of equipment with a voltage level equal to or higher than the specified voltage level belongs to the scope of post-evaluation and analysis of the stat...

AI Technical Summary

Problems solved by technology

However, considering that the data quality of the whole network is different, especially the compilation level of data such as power generation plan and bus load forecasting is different in different places, which leads to a large difference between the planned power flow and the actual power flow when using the whole network data to check

If this situation occurs within the scope of the local dispatch center, the operator can judge the possible problems in the plan data based on the existing method of running the plan and long-term work experience, but the results of the network-wide verification outside the area will be difficult. It cannot make good decisions, so it is necessary to provide a technical solution for scientific analysis of large-scale power network planning power flow deviation through the statistical analysis method of power flow deviation

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