Повышение качества электроэнергии

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Параметры качества поставляемой электроэнергии влияют на длительность и эффективность работы подключаемых устройств. Часто это становится критичным на производствах. Плохое качество электроэнергии отрицательно сказывается на работе промышленного оборудования, особенно вращающихся частей машин (насосов, вентиляторов), приводя к падению производительности и увеличению расхода потребляемой электрической энергии.

Поддержание оптимального значения косинуса фи (cosϕ) оказывает значительное влияние на эффективность использования электроэнергии. Косинус фи показывает какая часть из полной мощности активная, а какая реактивная. Энергоснабжающие компании предоставляют линию электросети, полная мощность которой складывается из активной («полезной») и реактивной («бесполезной») мощности. Доля «бесполезной» мощности может составлять до 60%. Так как оплата за электроэнергию производится за полную мощность, то потребитель вынужден нести расходы и за «бесполезную» электроэнергию, т.е. такую, которой он не может воспользоваться.

Наибольшее количество реактивной энергии потребляют:

– электродвигатели при неполной нагрузке;

– электросварочные аппараты;

– индукционные и дуговые печи;

– силовые выпрямители.

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