Automatic adjusting and controlling device for electricity energy quality

A control device and power quality technology, applied in harmonic reduction devices, reactive power adjustment/elimination/compensation, AC network to reduce harmonics/ripples, etc., can solve problems such as low power factor and achieve filtering Harmonics, elimination of voltage fluctuations and flicker, the effect of a reasonable structure
CN102148503AInactive Publication Date: 2011-08-10芮骏
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
芮骏
Publication Date
2011-08-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an automatic adjusting and controlling device for electricity energy quality, which consists of a measuring and controlling circuit as well as a direct current excitation controllable saturable reactor (9), a harmonic filter channel (24), a capacitor compensating element (11) and a voltage balance adjusting part (18) connected in parallel, wherein a reactance coil (91) of the direct current excitation controllable saturable reactor (9) is connected in parallel with the harmonic filter channel (24) and an excitation coil (92) of the direct current excitation controllable saturable reactor is electrically connected with the output end of a controllable direct current excitation power supply (6); the output end of the measuring and controlling circuit is respectively and electrically connected with the control ends of the controllable direct current excitation power supply (6), a first switching part (15) and a second switching part (21), and is used for respectively controlling the switching of the exciting current of the excitation coil (92), the capacitor compensating element (11) and the voltage balance adjusting part (18) according to the detected variable quantity. The automatic adjusting and controlling device for electricity energy quality can automatically adjust the power factors of a power grid, implement reactive compensation, eliminate harmonic waves and three phase imbalance, and can be broadly applied for guaranteeing the electricity energy quality.
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Description

technical field

[0001] The invention relates to a control device, in particular to an automatic control device for power quality. Background technique

[0002] Electric energy is the most important form of energy today. With the rapid development of my country's economy and technology and the rapid improvement of people's living standards, various complex, sophisticated, and power-quality-sensitive electrical equipment continue to popularize. Higher requirements have been put forward for the safety, stability and power quality of the system.

[0003] With the advancement of science, the load structure of modern power systems has undergone major changes, such as the rapid development of loads such as semiconductor rectifiers, thyristor voltage regulators and frequency conversion adjustment devices, steelmaking electric arc furnaces, electrified railways, and household appliances. Due to its non-linearity, impact and unbalanced power consumption characteristics, the voltage wa...

Claims

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