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Information × Registration Number 0221U100831, 0120U000148 , R & D reports Title Development of measures and technical means of compensation for open-phase modes of bulk power grids of the UES of Ukraine popup.stage_title Head Kuchanskyi Vladyslav V, Registration Date 09-01-2021 Organization Institute of Electrodynemics, NAS of Ukraine popup.description2 The review of problems of operation of modes of high-voltage long power transmission lines is executed. It is noted that in a market economy the most acute issue is to ensure the required capacity of transmission lines and the availability of capacity reserves. One of the most effective ways to solve this problem is a reasonable choice of location of controlled shunt reactors and static reactors of reactive power and selection of their tuning parameters, which in turn provides "flexibility" of the transmission system as a whole and can be considered within the concept of flexible AC power lines. Next, the idea is proposed and a detailed step-by-step method for selecting the location of controlled shunt reactors and static reactive power compensators in high-voltage networks, by establishing a quantitative relationship between the mode parameters. It is shown that transposition supports are a structural element of the route, which reduces the reliability of the lines and complicates preventive tests and repairs. Complex transposition schemes usually cause complications in the construction of supports and increase the cost of power lines due to the increase in the number of garlands of insulators and the total weight of the supports. Therefore, lengthening the transposition cycles and reducing their number for power lines is very appropriate, as it reduces the number of transposition supports. It is proved that the assumption of a perfectly transposed line is inadmissible due to the levels of asymmetry, because they lead to incorrect determination of the resistance of the compensation reactor. Therefore, even when the value of voltage asymmetry coefficients allows applying simplified schemes of transposition of extra high voltage lines, incomplete cycle or refusal of transposition, when calculating the values of compensation reactor resistances it is necessary to take into account the influence of asymmetry. Product Description popup.authors Kuchansky Vladyslav V Malakhatka Denys O popup.nrat_date 2021-03-17 Close