Method for calculating power grid operation evaluation index dimensionless

Abstract

The present invention relates to a method for calculating the power grid operation evaluation index dimensionless. The method comprises the following steps of 1) inputting the current data of an index from a power grid real-time database and inputting the historical data of the index from a power grid historical database to form an information database; 2) setting the interval number of the index and the index threshold values corresponding to the upper and lower limits of each interval; 3) analyzing the historical data of the index and counting the number of the historical data of the index within different intervals; 4) positioning the position of the current data of the index in a histogram by a historical distribution histogram of the index and the current data value of the index, and separately calculating the out-interval ranking rate and the in-interval ranking rate of the index to obtain the current ranking rate of the index; 5) setting the index scores corresponding to the upper and lower limit threshold values of the different intervals of the index, considering the distinction of a maximum index and a minimum index, and calculating the offset amount of the current ranking of the index. The calculation method of the present invention is simple in flow, small in computation amount and development difficulty and strong in practicality, and the definition of an intermediate result during the calculation process is clear.

Description

technical field [0001] The present invention is a dimensionless calculation method of power grid operation evaluation index, especially a multi-interval dimensionless calculation method of power grid operation index based on numerical historical distribution probability, which belongs to the innovation of the dimensionless calculation method of power grid operation evaluation index technology. Background technique [0002] Power grid operation evaluation indicators play an important role in grasping the operating status of the power grid, analyzing the advantages and disadvantages of dispatching business work, and improving the level of dispatching business. However, since the power grid operation evaluation index is often an evaluation of a certain aspect of the power grid operation, it often has different physical dimensions. The difference in physical dimensions and assessment objects of power grid operation evaluation indicators makes it difficult to achieve horizontal ...

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Problems solved by technology

The dimensionless index score calculated by the above method is difficult to carefully consider the differential characteristics of different intervals of the index, and it is difficult to highlight the actual impact of the index on the operation level of the power grid in different intervals in actual use, and cannot effectively guide the evaluation of power system operation

[0004] At the same time, the above method lacks the statistical analysis of the historical data of the indicators, and linear fitting is performed by manually setting the characteristic values ​​of the indicators, which lacks the necessary support and is not reliable. Comparability leads to poor practicality

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