Comprehensive compensation system for Vv wiring traction substation with out-of-phase and in-phase compatibility

• Main Authors: LIU WEI, SHU ZELIANG, MA QING'AN, JING DEYAN, YI DONG, LI QUNZHAN, GUO KAI, CHEN MINWU, ZHOU FULIN, ZHANG LIYAN, GUO LEI, HE JIANMIN, LI ZIHAN, GAO SHIPAI, ZHANG LI, XIE SHAOFENG, YU JUNXIANG
• Format: Patent
• Language: Chinese; English
• Published: 10.04.2013
• 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 invention discloses a comprehensive compensation system for a Vv wiring traction substation with out-of-phase and in-phase compatibility. On the secondary side of a traction substation, both a leading phase (T1-N) and a lagging phase (T2-N) supplies a traction load with power. The direct current sides of a first static var generator (SVG1) and a second static var generator (SVG2) are arranged in a back-to-back way, the alternating current sides of the SVG1 and the SVG2 are respectively connected with the leading phase (T1-N) and the lagging phase (T2-N) of a Vv traction transformer, the comprehensive compensation system which is compatible with out-of-phase and in-phase structures and easily develops and transforms from an out-of-phase mode to an in-phase mode is formed so as to generate a negative sequence power flow opposite to the traction load, and reactive compensation and harmonic suppression are combined through reasonable control. The application of the system is flexible, in-phase power supply is