Real-time computing method for theoretical line loss of low-voltage distribution room

Abstract

The invention discloses a real-time computing method for the theoretical line loss of a low-voltage distribution room with dynamic change of the number of users and the power consumption. The real-time computing method comprises the following steps of (1) selecting the type of a model, utilizing the unique optimal approximation character of an RBF (Radial Basis Function) neural network, i.e., any continuous function can be approximated by any precision, adopting the RBF neural network with an online learning function to establish a dynamic model for a power supply and distribution system in the low-voltage distribution room; (2) determining the structure of the model, and determining the structure of the neural network model (neuron) according to the number of the users and the power consumption characteristic in the low-voltage distribution room; (3) identifying parameters of the model; (4) carrying out computation on the theoretical line loss by utilizing the model. The real-time computing method has the advantages that the implementation method is simple, and the neuron network is adopted for constructing the system model, so that the influence of external factors on results is reduced, and further the computing precision is high.

Description

technical field [0001] The invention discloses a real-time calculation method for the theoretical line loss of a power network, in particular a real-time calculation method for the theoretical line loss of a low-voltage station area where the number of users and power consumption change dynamically. Background technique [0002] In the theoretical line loss calculation of the power network, the theoretical line loss calculation of the low-voltage station area is a key technical problem. So far, commonly used calculation methods in the prior art include: [0003] (1) electricity method; [0004] (2) volume method; [0005] (3) root mean square current method; [0006] (4) Average current method; [0007] (5) Power flow accurate algorithm. [0008] The common feature of the above-mentioned conventional methods is that it is necessary to know the equivalent resistance, the characteristic coefficient of the line load curve, the type (single-phase meter, three-phase three-wi...

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Problems solved by technology

[0009] In view of the fact that the real-time calculation method of the theoretical line loss in the low-voltage station area in the above-mentioned prior art relies on the original parameters of the power grid, which is likely to cause inaccurate calculations, the present invention provides a new low-voltage station based on the measurement information of the smart meter. The real-time calculation method of area theoretical line loss, the realization method is simple and easy, and the calculation accuracy is high

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