Self-adapted load type distribution transformer

Abstract

The invention provides a self-adapted load type distribution transformer. The self-adapted load type distribution transformer comprises a distribution transformer body unit, an on-load capacity-adjusting and voltage-adjusting integrated unit, an associated equipment unit and a comprehensive control unit, wherein the distribution transformer body unit and the on-load capacity-adjusting and voltage-adjusting integrated unit are connected in a unidirectional manner; and the on-load capacity-adjusting and voltage-adjusting integrated unit and the associated equipment unit are connected with the comprehensive control unit in a bidirectional manner respectively. According to the self-adapted load type distribution transformer disclosed by the invention, real-time operation data of the transformer, gear information of on-load capacity-adjusting switch equipment and on-load voltage-adjusting switch equipment, and equipment state information of online load phase-adjusting equipment and split-phase reactive-load compensation equipment are collected in real time, and comprehensive analysis and judgment can be carried out through a comprehensive analysis and judgment decision-making module to form a corresponding control policy and implement corresponding control operation. Economic operation manner selection, voltage adjustment, three-phase load unbalance management and reactive local balance under an on-load state of the distribution transformer can be realized, and the intelligent level of the distribution transformer and the self-adapted capability to a load are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of power distribution equipment energy saving, and in particular relates to an adaptive load distribution transformer. Background technique [0002] With the in-depth advancement of the new round of rural power grid transformation and upgrading projects, the overall level of my country's rural power grid has been further improved, but it still cannot meet the needs of the rapid development of rural power loads in recent years, and has not fully and effectively solved the high line loss rate of rural power grids. , Low pass rate of voltage quality, serious unbalanced three-phase load and other practical problems. At present, the total number of 10kV distribution transformers in rural areas in my country exceeds 1 million units, the annual growth rate of capacity exceeds 10%, and the number of newly added units exceeds 250,000 units. These distribution transformers are almost all conventional distribution trans...

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Problems solved by technology

[0003] At present, hundreds of on-load capacity regulation distribution transformers installed in the rural power grid system only have the function of on-load capacity regulation, but do not have the functions of on-load voltage regulation and online load phase regulation, and cannot fully utilize the power of the station area. Self-regulation and economic operation potential; a small number of automatic capacity-adjusting and voltage-regulating distribution transformers that have been installed and used have solved the negative problems caused by manual power outages, but due to the short-term load cut-off during the automatic capacity-adjusting and voltage-regulating process, it is not necessary It is suitable for use in power distribution areas that are sensitive to power quality; in addition, the technical performance of the product such as completeness, reliability, and stability needs to be further verified

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