Electric energy mass and powerless compensation combination controller

A comprehensive controller and power quality technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, etc., can solve problems such as AC voltage sag, and achieve the effect of improving voltage level, ensuring normal operation, and high reliability
CN1599187AInactive Publication Date: 2005-03-23TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2005-03-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The quality of power supply and the reactive compensation combination controller belongs to the field of the dynamic voltage compensation and reactive compensation technology of the power system. It adopts the design of the series-parallel connection, connects with the silicon controlled in series and with the inverter parallelly through the measure and control circuit centered on the DSP in normal working and increases the reliability and efficiency. When the voltage falls, the inverter will send out the corresponding sine wave to compensate the needed quantity of the voltage and thus can guarantee the failure free operation of users' equipments. When users' reactive demand is excess or negative and affects the level of the voltage, it will devote the shunt-wound general-patching capacitor in stages or get rid of it to compensate the reactive. When the interphase reactive is not balanced, solve the problem of the imbalanced interphase reactive through the casting control to the shunt-wound capacitor. It also solves the problems of fall of the alternating voltage and the reactive compensation in the power system and improves the level of the voltage.
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Description

technical field

[0001] A comprehensive controller for power quality and reactive power compensation belongs to the technical field of power system dynamic voltage compensation and reactive power compensation. Background technique

[0002] The more developed the economy, the higher the requirements for power quality level. Power quality problems will not only bring great economic losses to the industry, such as shutdown and restart leading to increased production costs, damage to sensitive equipment, scrapping semi-finished products, and reducing product quality. etc., and will also endanger the normal operation of the power system. According to the research of the American Electric Power Research Institute (EPRI), power quality problems cause the US industry to lose 30 billion US dollars in data, materials and productivity every year. With the development of my country's high-tech industry With rapid development, the requirements for power quality level are getting higher and ...

Claims

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