Supervised optimal on-line compensation for harmonic pollution in electrical networks

Harmonic reduction has become one of the major challenges facing electrical distribution. This is a large-size problem, concerned with a nonlinear and noisy system, subject to configuration changes. This paper presents a new adaptive harmonic compensation, whose main originality is its capacity to s imultaneously minimise harmonic pollutions at several points. The control s pace is explored step by step to search for the optimal compensation, witho ut an intermediate identification phase. To prevent problems with local min ima, exploratory behaviour is added to simple optimisation. Two search meth ods - optimisation-directed and exploration directed - are given. Data stor age and control Supervision problems are also addressed, and some experimen tal results are discussed. (C) 1998 Elsevier Science Ltd. AII rights reserv ed.