Discrimination method and device for reactive power compensation switching status of distribution transformer
A technology of distribution transformers and switching state, applied in the field of distribution network, can solve the problems of difficulty in ensuring the accuracy of analysis results and low efficiency, and achieve the effect of avoiding analysis obstacles, improving accuracy, and improving simulation efficiency
Active Publication Date: 2022-06-28
MEIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CORP
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[0003] In the existing technology, the judgment of the reactive power compensation switching status of the distribution transformer is mainly based on the multi-day historical changes of the transformer power factor. Accuracy is difficult to guarantee and efficiency is low
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[0044] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.
[0045] In the present invention, the reactive power compensation of the distribution transformer refers to devices such as shunt capacitors installed at the distribution panel (cabinet) on the 400V low-voltage side of the transformer, which play the role of adjusting the reactive voltage and improving the power factor. The actual field distribution transformer reactive power compensation device has different configuration capacities, different product models, and large differences in intelligence level. Among them, manual switching...
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The invention discloses a method and device for discriminating the reactive power compensation state of a distribution transformer. The measurement data of 96 points, as well as the parameter data of the distribution network to which the distribution transformer belongs; the topology model is constructed according to the measurement data and parameter data; the reactive power of the distribution transformer to be judged is preprocessed; The reactive power of the power transformer, combined with the topology model, simulates the distribution transformer to be judged, and determines the reactive power compensation status of the distribution transformer to be judged according to the simulation results. The technical solution provided by the invention realizes accurate judgment of whether the reactive power compensation of the distribution transformer is put into use under incomplete measurement conditions, avoids analysis obstacles caused by incomplete collection of measurement data, and helps to improve the reactive power of the distribution network. Power flow simulation efficiency.
Description
technical field [0001] The invention relates to the technical field of distribution networks, in particular to a method and device for judging the switching state of reactive power compensation of distribution transformers. Background technique [0002] The distribution line itself has the characteristics of complex topology, frequent equipment changes, and variable operation modes. Under the background of large-scale access of new energy sources such as distributed photovoltaics and wind power, the distribution of reactive power flow in the distribution network tends to change. , which puts forward higher requirements for power flow analysis and load forecasting of distribution network. The current distribution network analysis and prediction methods rely on the power grid production management system, GIS system and the line equipment parameters and operation data in the metering automation system to construct topology models and simulate analysis. Among them, the reactive...
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IPC IPC(8): H02J3/18
CPCY02E10/76H02J3/18
Inventor 李志华谢明磊曹德发廖明李延宾李灵勇罗海波罗威魏存良曾晓丹潘旭扬
Owner MEIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CORP