Three-phase unbalanced load adjustment device for 0.4kV power distribution area

• Main Authors: LE JUNLIN, LI CHANGSHUI, YU JIANFU, ZHANG LEI, LE ZHIJUN, TU JIANHUA, LI SHUHUA, SHANGGUAN LONGHUI, HUANG PENG, LIAO XIAOLING
• Format: Patent
• Language: Chinese; English
• Published: 25.07.2012
• 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

The utility model discloses a three-phase unbalanced load adjustment device for a 0.4kV power distribution area. A three-phase power supply is connected with an air switch and a current transformer (for facilitating the matching of an ammeter), a part between the air switch and the current transformer is connected with a change-over switch through a lead, the current transformer (matched with the ammeter) is then accessed to a single-phase load, the change-over switch is used for transforming the phase sequence of the three-phase power supply to randomly regulate the single-phase load among a phase A, a phase B or a phase C of the three-phase power supply so as to achieve the purpose of basically balancing the three-phase loads. The utility model has the technical effects that: the three-phase unbalanced load adjustment device is convenient and rapid to regulate, can be increased in adjustment number and shortened in adjustment period along with load changes, and can be adjusted in each time period every day;