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Влияние работающих двигателей на остаточные напряжения узлов комплексной нагрузки станций

Влияние работающих двигателей на остаточные напряжения узлов комплексной нагрузки станций

Abstract

Сформирована база статистических данных и выполнен анализ причин остановов электродвигателей при кратковременных нарушениях электроснабжения в питающей энергосистеме на динамическую устойчивость синхронных и асинхронных приводов насосов электротехнической системы с комплексной нагрузкой. Исследовано влияние учета работающих синхронных и асинхронных электродвигателей на переходные процессы и уровни остаточных напряжений трансформаторных подстанций. Выявлено, что для обеспечения устойчивости насосных станций, снижения потерь при различных видах внешних коротких замыканий желательно использовать автоматику ввода резерва со временем реакции менее 10 мс. Предложено устройство супербыстродействующего ввода резерва, обеспечивающего время реакции 9 мс и полное время переключения на резервный ввод за 23–65 мс. Приведены результаты расчетных исследований, подтверждающие возможность бесперебойной работы потребителей насосных станций. The article presents a statistical data base and analysis of causes of electric motors stop gear in case of short- term power supply disturbances in power supply system for dynamic stability of synchronous and asynchronous drives of electrical system pumps with complex load. It was investigated, that the influence of counting of operating synchronous and asynchronous motors on transient processes and levels of residual voltages of transformer substations. It was revealed that in orderto ensure the stability of pump stations, reduce losses at various types of external short circuits, it is advisable to use automatic reserve input with a reaction time of less than 10 ms. Device for super-fast input of reserve is proposed, providing reaction time of 9 ms and full time of switching to standby input for 23–65 ms. The article provides the results of calculation studies confirming the possibility of uninterrupted operation of pump station consumers.

Keywords

Выбег, Frequency-controlled drive, Короткие замыкания, Short circuits, Pump stations, Частотно-регулируемый привод, Self-start, Кратковременные нарушения электроснабжения, Rundown, Dynamic stability, Динамическая устойчивость, Automatic reserve entry, Насосные станции, Short-term power supply disturbances, Автоматический ввод резерва, Самозапуск

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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