District transformer economic switching scheduling method

Abstract

The invention discloses a district transformer economic switching scheduling method. The method is characterized by comprising the following steps: step 1, reading district transformer parameters and parallel modes; step 2, according to load prediction, obtaining a peak load; step 3, calculating an available mode of the peak load; step 4, forming an available sequence set; step 5, forming a frequency optimization sequence set; step 6, applying optimal path selection to select an optimal sequence; step 7, according to the load prediction, updating peak loads in the following two days in a rolling mode; and step 8, examining the safety of a corresponding two-day combination mode in the economic optimal sequence in a rolling mode by use of updated peak loads of the following two days. The method provided by the invention can simultaneously arrange district transformer switching time of the following seven days and corresponding combination modes, realizes economic switching scheduling of a district transformer, can satisfy safe operation of the transformer, at the same time controls the transformer switching frequency and density, and accords with the scheduling operation practice of a district transformer station.

Description

technical field [0001] The invention relates to a switching scheduling method, in particular to an economical switching scheduling method for a community transformer, belonging to the technical field of distribution transformer operation. Background technique [0002] With the advancement of urbanization in China, the importance of community distribution substations in the power system has gradually increased. In order to improve the reliability of residents' power supply and respond to the country's requirements for energy conservation and emission reduction, the economic operation of distribution transformers has attracted more and more attention. However, due to the different energy efficiency levels of transformers currently in use in China's power distribution system, and the large differences in the utilization rate of installed capacity of substations in various communities, the economic benefits of substations in communities need to be further improved. [0003] The...

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Problems solved by technology

[0005] This type of method is based on the prediction of the future daily load curve, which can theoretically enable the economical operation of the transformer, but there are two major difficulties in practice

First, frequent switching will accelerate the damage of power equipment

Second, the change time is irregular, which reduces the reliability of power supply

The existing methods are not enough to meet the needs of industrial applications in terms of safety prediction, switching time and combination mode optimization, online safety verification and correction, and switching method calculations in the process of making switching scheduling.

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