General power-saving device

Abstract

The invention relates to a general power-saving device, which comprises a harmonic suppression circuit, an automatic voltage adjusting and stabilizing circuit and an automatic tracking single three-phase compensation circuit. A power supply of a power grid is connected with the input end of the harmonic suppression circuit, the output end of the harmonic suppression circuit is connected with the input end of the automatic voltage adjusting and stabilizing circuit, the output end of the automatic voltage adjusting and stabilizing circuit is connected with the input end of the automatic tracking single three-phase compensation circuit, the output end of the automatic tracking single three-phase compensation circuit is connected with a phase failure protection device, the phase failure protection device is connected with an overload protection device, and an automatic power-saving circuit or a manual bypass circuit is connected between the input end of the harmonic suppression circuit and the output end of the automatic tracking single three-phase compensation circuit. The general power-saving device filters various surges and transients in the power grid by modularized design, removes characteristic harmonic, reduces circuit loss, improves the power quality of a user, is suitable to be used under various conditions, and achieves double effects of saving power and protecting electric equipment.

Description

technical field [0001] The invention relates to a power saving device, in particular to a general power saving device. Background technique [0002] With the rapid growth of my country's power energy consumption, energy saving has become a long-term strategic issue related to my country's national economic security, international market competitiveness of enterprises, resource and environmental protection and other economic and social sustainable development. For many years, all parts of the country have been in a state of unprecedented tension in electricity consumption. Due to the rapid economic development directly leading to a sharp increase in electricity consumption, the power supply has been tightened in an all-round way. At the same time, the electricity bill is usually the third largest cost of the enterprise unit, but it is a very astonishing enterprise cost. Now enterprises have generally recognized that the use of power-saving products brings benefits to enterpri...

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Problems solved by technology

[0003] At present, there is a common situation of poor power quality in the power supply grid. The rapid development of social economy and the use of various new electrical equipment make this situation more serious, which has a great impact on the user's electrical equipment. The most direct performance Because the equipment is not working properly, the life is short, the electricity bill is high, the efficiency of the transformer is low, etc.

In the power consumption systems of general administrative institutions and industrial and commercial enterprises, there are mostly small loads, the working conditions are different, and the power factor is generally not high; there are many types of electrical equipment, and the use of a large number of electronic devices and switches reduces the power quality; In the electrical system, problems such as equipment configuration, line laying irregularities, and line aging lead to increased line losses; when enterprises develop new equipment, they are limited by the capacity of transformers with low output. Large power loss

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