High-voltage electric power-saving equipment

Abstract

The invention discloses high-voltage electric power-saving equipment. The high-voltage electric power-saving equipment comprises a main circuit, an electromagnetic compensation circuit, a power-saving through control circuit, an exciting voltage and current adjusting and controlling circuit, a power-saving gear conversion control circuit and a power-saving gear command switching circuit, wherein the electromagnetic compensation circuit is connected with the main circuit; the power-saving through control circuit controls the working state of the main circuit; the exciting voltage and current adjusting and controlling circuit changes exciting voltage and exciting current of the electromagnetic compensation circuit; the power-saving gear conversion control circuit controls the gear of the exciting voltage and current adjusting and controlling circuit; and the power-saving gear command switching circuit controls the power-saving gear conversion control circuit to select a proper power-saving operating gear. In the equipment, power supply parameters of a high-voltage power supply are optimized, the utilization ratios of power supply quality and electric energy are improved, and impact current at the start of a dynamic load or an inductive load and surge current and harmonic waves in operation are suppressed and reduced, so that electric energy is saved, power saving rate is generally between 5 and 30 percent, the service life of the power-saving equipment can be prolonged, and the expenditures of excess electricity cost and equipment maintenance and replacement cost are reduced.

Description

technical field [0001] The invention relates to a power-saving device, in particular to a high-voltage electric power-saving device. Background technique [0002] The generation and application of electricity is one of the greatest scientific and technological achievements in human history. As the cleanest and most convenient secondary energy, electricity is playing an increasingly important role in promoting social development, promoting scientific and technological progress, and improving people's quality of life. However, with the improvement of productivity and the development of industrial modernization, the speed of energy consumption in the world is also getting faster and faster, far exceeding the speed of population growth. However, the main energy sources such as coal, oil and natural gas are not renewable. According to the report of the World Energy Agency (IEA), according to the current economic development speed, it is estimated that the world's energy reserves...

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Problems solved by technology

[0005] However, at present, the power-saving function of high-voltage electric equipment is single, and the effect of energy-saving and power-saving is poor. Moreover, with the increasing number of high-voltage nonlinear loads, the problem of harmonic interference that plagues low-voltage power grids is also increasingly appearing in high-voltage power grids. The existence of harmonics will affect The entire power grid environment will not only affect the normal operation of the equipment, but also cause additional harmonic losses to the electrical equipment in the public grid, reducing the efficiency of the electrical equipment

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