Distribution transformer operation optimization method based on Hyperpt-GRU model

Abstract

The invention belongs to the technical field of power distribution networks, and provides a distribution transformer operation optimization method based on a Hyperpt-GRU model. The method comprises the steps of: carrying out the short-term load prediction of a transformer substation based on a Hyperpt-GRU prediction model to obtain the target daily load prediction power of the transformer substation; calculating the optimal economic operation intervals of a distribution transformer bank in different operation modes based on the relationship between the comprehensive power economic load coefficient and the optimal economic operation area; performing interval division on the target daily load prediction power according to the optimal economic operation intervals of the distribution transformer bank in different operation modes to obtain an interval to be operated; in the to-be-operated interval, calculating the power-saving benefit caused by the change of the operation mode of the distribution transformer bank; calculating the equivalent switching cost generated by various devices in the switching process of the distribution transformers; and taking the difference between the power-saving benefit and the switching cost as the power-saving profit, and determining the optimal switching time of the distribution transformer by the maximum power-saving profit, so as to enable the transformer substation to obtain the maximum economic benefit.

Description

technical field [0001] The invention belongs to the technical field of distribution networks, and in particular relates to a distribution transformer operation optimization method based on a Hyperopt-GRU model. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The power distribution system is an important part of the power system, including many power equipment mainly distribution transformers. The loss of these power equipment directly determines whether the distribution network is in an economical operation state. The power loss of the distribution transformer is in the The total power loss of the distribution network accounts for the largest proportion; therefore, the economical operation of distribution transformers plays a vital role in reducing network losses and saving energy. [0004] The economical operation technology of distribut...

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Problems solved by technology

At present, the most researched method for dividing the economic operation interval of distribution transformers is the critical point method. This method mainly obtains the power critical point by solving the intersection point of the load loss curve of the distribution transformer in different operating modes, and then divides the time periods around the power critical point by As an economical operation interval, each interval corresponds to an operation mode with the least power loss of distribution transformers; although this method can simply divide the economical operation interval, the inventors found that there are two deficiencies in the following Advantages: First, the critical power to change the operation mode of the distribution transformer is only a point value, which brings certain difficulties to the actual operation; second, for real-time fluctuating loads, frequent switching of the operation mode does not conform to the operation principle of the transformer

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