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Method for generating power grid tie-line based on node identification result

A power grid and section technology, applied in the field of grid section generation based on node identification results, can solve problems such as power flow calculation reliability, influence on dispatchers, large voltage deviation, etc., and achieve good application prospects and accurate results

Inactive Publication Date: 2017-06-23
NR ELECTRIC CO LTD +1
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the voltage calculation result of the current state estimation often deviates greatly from the collected voltage, which causes a large deviation of reactive power flow and directly affects the credibility of the dispatcher's power flow calculation

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  • Method for generating power grid tie-line based on node identification result

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] The method for generating grid sections based on node identification results of the present invention, on the one hand, identifies the disturbances that cause power flow changes based on the data collected in real time by the energy management system; on the other hand, identifies the adjustments of power plants and generators in the grid during the disturbance process through comparative analysis , and then identify the model properties of the generator and the power adjustment correlation coefficient. Finally, these identification results are introduced into the power flow calculation of the dispatcher. The generated grid section and the real-time data collected by the energy management system are more comparable, making it possible to use this section to carry out The results of power grid optimization calculation and stability analysis calculation are more ac...

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Abstract

The invention discloses a method for generating a power grid tie-line based on a node identification result. On one hand, the disturbance causing the flow change is identified according to data acquired by an energy management system in real time; on the other hand, the adjustment of each power plant and each generator in a power grid in a disturbance process is identified through comparison and analysis, the model attribute of the generator and power adjusting correlation coefficients can be identified, finally the identification result is introduced to flow calculation by a dispatcher, the generated power grid tie-line and the data acquired by the energy management system in real time have higher comparability, results obtained by power grid optimization calculation and stabilization analysis calculation by employing the tie-line are more accurate and in accordance with the reality, and the application prospect is good.

Description

technical field [0001] The invention relates to a power grid operation analysis and dispatching technology system, in particular to a method for generating a power grid section based on a node identification result. Background technique [0002] At present, the optimization and stability calculations of the power system are relatively mature, but these calculations and analyzes are all based on the known grid model and state. The current operating state of the power grid is mainly monitored and controlled by the energy management system. These data are collected by the substation through RTU (remote terminal unit) and sent to the energy management system for unified monitoring and control. [0003] Due to the influence of acquisition accuracy, non-simultaneity and other factors, the original data cannot accurately reflect the state of the power grid. In addition, the direct measurement results do not meet the requirements of the calculation model of the power system. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00G06Q10/06G06Q50/06
CPCH02J3/00G06Q10/06G06Q50/06H02J2203/20
Inventor 范展滔李翔黄凯顾全张孝杨梦楠金朝意
Owner NR ELECTRIC CO LTD
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