Transposition and Voltage Unbalance in High Phase Order Power Transmission Systems
نویسندگان
چکیده
منابع مشابه
Statistical Properties of Voltage Unbalance Factor in Three-Phase Power Systems
Three-phase power systems under sinusoidal steady-state condition are commonly analyzed by means of the wellknown symmetrical component transformation. The main assumption underlying such a transformation is symmetry of the phases of a power system. In modern power systems, however, phase symmetry cannot be guaranteed for several reasons, e.g., large single-phase loads including high-speed rail...
متن کاملemittance control in high power linacs
چکیده این پایان نامه به بررسی اثر سیم پیچ مغناطیسی و کاوه یِ خوشه گر با بسامد رادیویی بر هاله و بیرونگراییِ باریکه هایِ پیوسته و خوشه ایِ ذرات باردار در شتابدهنده های خطیِ یونی، پروتونی با جریان بالا می پردازد و راه حل هایی برای بهینه نگهداشتن این کمیتها ارایه می دهد. بیرونگرایی یکی از کمیتهای اساسی باریکه هایِ ذرات باردار در شتابدهنده ها است که تاثیر قابل توجهی بر قیمت، هزینه و کاراییِ هر شتابدهند...
A New Digital Filter for Unbalance Distorted Current and Voltage Estimation in Power Systems
This paper presents a novel algorithm for identifying and measuring the symmetrical components of distorted three phase voltage or current waveforms in electrical power systems. The proposed algorithm is capable of estimating the symmetrical components as well as the harmonic contents of a given unbalanced distorted signal. The proposed technique is based on stochastic estimation theorem. The p...
متن کاملImpact of Untransposed 66kV Sub-transmission Lines on Voltage Unbalance
The level of voltage unbalance that exists in some interconnected sub-transmission networks in Australia has been observed to be above the code requirements (e.g. 1% in Victoria). There is a perception that these high levels arise as a result of asymmetrical loads. However, the system asymmetry (of lines which are not normally transposed at 66kV, transformers and capacitor banks) also can play ...
متن کاملVoltage Unbalance Problems and Solutions for Electrified Railway Systems
Voltage and current unbalance problems of power networks due to AC electrified railway systems are studied and their influences such as the voltage unbalance factor and the current negative sequence contribution factor injected to the network are calculated. Several methods can be used for reducing the power quality unbalance problems which have been proposed and the best of them is chosen by c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Electric Power Components and Systems
سال: 2014
ISSN: 1532-5008,1532-5016
DOI: 10.1080/15325008.2014.949915