Method and system for evaluating real-time planning balance capability of power grid
A technology for balancing capabilities and evaluation methods, applied in the field of power grids, can solve problems such as fragmentation and numerous analysis indicators, and achieve the effects of convenient use, simplified evaluation steps, and increased quality and stability
Inactive Publication Date: 2015-12-23
CENT CHINA GRID +1
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Problems solved by technology
[0003] In the real-time planning and balancing work of the upper-level power grid to urge the lower-level power grid, a comprehensive analysis and evaluation of the lower-level power grid is required. However, the existing implementation methods make the analysis indicators numerous and scattered, and lack simple, comprehensive and accurate real-time planning and balancing capabilities of the power grid. evaluation index
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[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote 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 only for explaining the present invention and should not be construed as limiting the present invention.
[0020] In the description of the present invention, it should be understood that the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated The number of technical characteristics. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise ...
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The invention puts forward a real-time plan balancing capability evaluation method and a real-time plan balancing capability evaluation system for power grids. The method includes the following steps: acquiring main debugging power plant positive distribution output, main debugging power plant negative distribution output, main debugging power plant positive regulation and main debugging power plant negative regulation; working out a positive distribution factor and a negative distribution factor according to the main debugging power plant positive distribution output and the main debugging power plant negative distribution output; correcting the main debugging power plant positive regulation and the main debugging power plant negative regulation to respectively obtain corrected main debugging power plant positive regulation and corrected main debugging power plant negative regulation; obtaining unit regulation according to the positive distribution factor, the negative distribution factor, the corrected main debugging power plant positive regulation and the corrected main debugging power plant negative regulation; and working out a plan balancing capability evaluation index according to load prediction accuracy, a real-time balanced commissioning rate and unit regulation. The method based on the embodiment of the invention can comprehensively and accurately evaluate the real-time plane balancing capability index of a power grid.
Description
technical field [0001] The invention relates to the technical field of power grids, in particular to a method and system for evaluating a real-time planned balance capability of a power grid. Background technique [0002] With the development of load forecasting technology, the accuracy of ultra-short-term load forecasting has reached a high level, and the real-time planning balance of power grid based on ultra-short-term load forecasting is gradually applied to all levels of power grids. Real-time plan balance can effectively stabilize the part of the load fluctuation that cannot be balanced by the day-ahead plan, thereby greatly reducing the regional control deviation of the power grid. The contribution of real-time plan balancing to power grid control is mainly reflected in two aspects: one is to promote the stability of power grid frequency and improve power quality, and the other is to improve the level of tie-line active power control. [0003] In the real-time planni...
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IPC IPC(8): H02J3/00H02J3/46
Inventor 凌卫家赖宏毅刘志成刘涛王春明胡伟陈磊徐飞张玮灵董时萌
Owner CENT CHINA GRID