جبران بتا (فاز ثابت) برای مشخصات ولتاژ تخت در یک خط انتقال

ترجمه فارسی مقاله جبران بتا (فاز ثابت) برای مشخصات ولتاژ تخت در یک خط انتقال

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جبران بتا (فاز ثابت) برای مشخصات ولتاژ تخت در یک خط انتقال

جبران بتا (فاز ثابت) برای مشخصات ولتاژ تخت در یک خط انتقال

abstract

The reliability of the bulk electric power systems is not only dependent on the generation but also on the transmission system. In long lines, the voltage along the transmission line varies with the loading conditions. Proper reactive power compensation helps to maintain the voltage along the line within acceptable limits. This paper proposes a compensation method to adjust the phase constant of the transmission line in order to obtain a flat voltage profile along the line. Case studies conducted on a long transmission line are presented.

Keywords:
Beta compensation
Flat voltage profile
Flatness Index
Surge impedance loading
Reactive power compensation

Introduction
The economic growth of any country depends on the availability of a quality electric power, one criterion of which is to maintaina constant voltage throughout the length of the line and makingit flat. The major generating plants may not be near to the loadcenters and this condition dictates the power transmission overlong distances. The bulk power transmission over longer distancesis possible and economical if transmitted at higher voltages (EHVand UHV) [1]. The fundamental requirement for bulk transmissionof electrical power is to keep the voltages near to its ratedvalue and voltage variation along the line within acceptable limits.This is more important while transmitting at higher voltagesin particular in order to keep the stress on the insulators belowthe rated value. One of the major concerns while transmittingpower at high voltages is inadmissible increase of voltage alongline on no load or low load conditions. Reactive power compensationprovides voltage support and reduces the voltage fluctuationat a given terminal of a transmission line. It also improves thesystem stability by increasing the maximum active power thatcan be transmitted.

جبران بتا (فاز ثابت) برای مشخصات ولتاژ تخت در یک خط انتقال  Beta (phase constant) compensation for flat voltage profile in a transmission line شبیه سازی مقاله جبران بتا (فاز ثابت) برای مشخصات ولتاژ تخت در یک خط انتقال شبیه سازی مقاله Beta (phase constant) compensation for flat voltage profile in a transmission line

جبران بتا؛ مشخصات ولتاژ تخت – شاخص تخت بودن؛ بارگذاری امپدانس افزایشی ؛ جبران توان راکتیو

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