Modified power factor correction for asymmetrically loaded network - exploits self-inductance of network for achievement of symmetry through comparison of initial and final states

摘要

The regulation proceeds cyclically from alarm generation to differential measurement among the three phases (A,B,C), measurement of the active power, calculations of new compensation and symmetrisation powers, a check on the possibilities of symmetrisation, a calculation of the final state vector, and comparison of this with the initial state. Four standard reactive power compensators (MSz) are used for measurement and alarm generation, with a proprietary AAC circuit, a customised controller (VM), single-phase capacitors and appropriate switchgear. ADVANTAGE - Network is protected against asymmetrical loading and overload, and its capacity can be utilised optimally.