An energy-saving power transformer with automatic power distribution

Abstract

The invention relates to an intelligent power distribution transformer, in particular to an energy-saving type power transformer capable of achieving automatic power distribution. The energy-saving type power transformer comprises a capacitance-regulating and voltage-regulating transformer body with a low-voltage load switch. The capacitance-regulating and voltage-regulating transformer body is connected with a high-voltage binding post and a low-voltage outgoing line row. The energy-saving type power transformer is characterized by further comprising an intelligent control unit. According to the energy-saving type power transformer, the problems that the voltage is not stable, the non-load loss is large, the power supply reliability is low and power supply load control and electric energy distribution means are laggard at a power distribution network user side commonly are effectively solved, the power transformer is matched with a compensation unit and a balance unit, the power consumption reasonability can be greatly improved, remote and automatic control and power consumption monitoring management are achieved, the power transformer is intelligent power supply and distribution equipment with the obvious electricity conservation performance, and great social and economic benefits are achieved.

Description

technical field [0001] The invention relates to an intelligent power distribution transformer, which belongs to power supply and distribution equipment. Background technique [0002] Accelerating the promotion and popularization of key energy-saving technologies, guiding energy-consuming units to adopt advanced energy-saving new technologies, new technologies and new equipment, and improving energy utilization efficiency are the implementation of the "Energy Conservation Law of the People's Republic of China"; the implementation of the national key energy-saving technology promotion catalog A major technological revolution task. [0003] The power transformer, which is related to the energy consumption link of this energy-saving technology, is one of the main equipment of the power grid. While transmitting and distributing power, the power transformer also consumes a lot of power. Although the efficiency of transformers has reached as high as 96.0% to 99.7%, due to their ex...

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Problems solved by technology

[0004] Due to seasonality, mobility of personnel, and differences in time of day and night of users, the load of my country's distribution network fluctuates greatly, and the capacity of distribution transformers does not match the demand for electricity. Generally, more than 70% of enterprise-specific transformers are idle or light-loaded. In operation, public transformers for residential use run at no-load and light-load for more than 80% of the time, resulting in high loss of distribution transformers

[0005] For urban and rural distribution network, the operating load fluctuates greatly, the no-load and light-load time is long, and the no-load loss is high; the peak load affects the safety of the transformer operation; the protection of the distribution station area is unreliable, and it is prone to leapfrog tripping accidents; the effect of reactive power compensation poor quality; low voltage qualification rate; extensive management methods, etc., the conventional use of quick-break protection of drop-out fuses, low-voltage side molded case circuit breakers over-current and quick-break protection techniques are far from meeting the needs of modern operation management for safe and automatic management of power distribution Maintenance needs, and at the same time, in order to meet the precise and frequent requirements of distribution transformer capacity and voltage regulation operations, intelligent capacity and voltage regulation technology of distribution transformers must be implemented to achieve fast, accurate, safe and reliable operation requirements

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