Intelligent reactive compensation and harmonic suppression device

• Main Authors: LIANG ZHUO, LIU ZHIQIANG, ZHOU HONGGANG, LIU WENJUN, WANG YANG, GE CHENG, CUI YI
• Format: Patent
• Language: English
• Published: 27.05.2015
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SYSTEMS FOR STORING ELECTRIC ENERGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

Disclosed is an intelligent reactive compensation and harmonic suppression device which relates to the field of reactive compensation and harmonic suppression of an electric-power system and is mainly designed to solve a problem of a limited harmonic compensation capability of the prior reactive compensation devices and the like. The device includes a casing. A non-linear load on an installation board is connected to a power grid input end. Both of a current sampling module and a voltage sampling module are connected to a signal conditioning module. The signal conditioning module is connected to a V/A signal conversion module and an overvoltage and overcurrent protection module. The overvoltage and overcurrent protection module is connected to a main control module. The V/A signal conversion module is connected to the main control module. The main control module is connected to a driving module. An operation instruction panel is connected to the main control module. A soft start module is connected between output of an IGBT conversion module and a power grid. A sub control module is connected with the main control module. A liquid crystal display module is connected with the sub control module. An output power supply end of a power supply system is connected to power supply ends of the main control module and the sub control module. Advantages of the intelligent reactive compensation and harmonic suppression device are content of harmonic current of the power grid can be reduced.