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

A static safety check and power grid technology, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems of inconsistent data quality in the whole network, large differences in planned power flows, etc., and achieve reliable and accurate algorithms with good practical effects Effect

Active Publication Date: 2014-12-17
STATE GRID CORP OF CHINA +2
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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

Method used

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Embodiment Construction

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0036] Such as figure 1 As shown, the evaluation and analysis method of large-scale power grid static security check provided by the present invention comprises the following steps:

[0037] 1. Determine the station equipment that needs to be evaluated and analyzed, and obtain the planned power flow data and historical operation data of the station equipment;

[0038] 1. Determine the scope of station equipment:

[0039] After determining the voltage level for checking and calculation, the category range of station equipment th...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 董炜张传成蔡帜许丹闫翠慧丁强邓勇黄文英黄金富戴赛李伟刚刘鹏朱翊
Owner STATE GRID CORP OF CHINA
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