Real-time and stage theory line loss fast estimation method with clustering technique adopted

Abstract

The invention discloses a real-time and stage theory line loss fast estimation method with the clustering technique adopted. The method comprises the steps of extracting a real-time fracture surface feature vector, calculating a center fracture surface weight coefficient vector matched with the real-time fracture surface feature vector, fracture surface clustering, and theory line loss calculation. According to the real-time and stage theory line loss fast estimation method with the clustering technique adopted, when data are collected completely, center fracture surfaces are extracted by means of the nearest-neighbor clustering technique, and then fracture surfaces with similar operating states in a power grid are gathered together; under the situation of data missing, a central moment close to the data missing moment is found out by means of the nearest-neighbor clustering technique, and transmission loss of the power grid at the moment is assigned to the data missing moment; therefore, stage and real-time theory line loss values can be obtained fast, stage theory line loss calculation is achieved, the speed of the stage theory line loss calculation is increased, and precise comparison between the statistics line loss rate and the stage and real-time theory line loss values is achieved.

Description

technical field [0001] The invention relates to the field of theoretical line loss calculation of power grids, in particular to a real-time and stage theoretical line loss rapid estimation method completed by clustering technology. Background technique [0002] Power network loss is the power loss generated during the transmission of electric energy. The line loss rate is an important economic and technical index of electric power enterprises, and it is also an important symbol to measure the comprehensive management level of electric power enterprises. Efforts to reduce line loss is an important task for power grids and power supply enterprises, and it is also the main means to achieve economic results. Theoretical line loss calculation plays an important role in measuring the economic operation of the power grid, evaluating the rationality of the grid structure and layout, identifying weak links in the power grid, formulating loss reduction measures, and reasonably issuing...

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Problems solved by technology

At the same time, although the use of automatic grid data collection systems is becoming more and more popular, due to the large number of grid voltage levels and the large number of equipment connected to the grid, the theoretical calculation of line loss requires a huge amount of data, and errors will inevitably occur during data collection. Incomplete data collection and incomplete power grid data required for theoretical calculations will result in very unsatisfactory theoretical calculation results or inability to calculate them, and cannot be accurately compared with statistical line loss rates

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