Method for setting shunt reactor in black-start process

Abstract

The invention discloses a method for setting a shunt reactor in a black-start process. The method comprises the following steps of: 1), establishing a capacity rise effect mathematical model in the black-start process; 2), establishing a mathematical model of a typical power transmission line according to a capacity rise effect mechanism; 3), simulating a black-start zero-start boosting process according to the mathematical model established in the step 2) to obtain data of voltage distribution along the line; 4), on the basis of the step (3), when the reactors are installed at different positions and in different numbers, comparing and analyzing the voltages along the line, different positions for mounting the reactor comprise a head end, a 1 / 4 distance away from the head end, a line middle, a 3 / 4 distance away from the head end, a tail end and permutation and combination of the head end with different numbers of 1, 2, and 3 and 5), selecting an optimal shunt reactor setting mode fromthe technical and economic perspectives according to the result obtained in the step 4). According to the method, the best mode is found out for several different shunt reactor modes to guide erection construction of the power transmission line.

Description

technical field [0001] The invention relates to a setting method of a shunt reactor in the black start process, specifically proposes the suppression mechanism and characteristics of the shunt reactor to the no-load long line voltage rise, and finds out the best method for several different shunt reactors. way to guide the erection of transmission lines. Background technique [0002] In the zero-start boosting process, due to the characteristics of high voltage level and high charging power of the line, the voltage will rise at the end of the transmission line due to the capacity boost effect of the no-load line, which seriously affects the smooth progress of the black start test. The capacity rise effect of zero-start voltage boost is the main cause of overvoltage, which seriously shortens the service life of insulation equipment. [0003] In order to suppress the capacity rise effect, parallel reactors at the end of the line are mostly used in projects. However, a single ...

AI Technical Summary

Problems solved by technology

[0002] In the zero-start boosting process, due to the characteristics of high voltage level and large charging power of the line, the voltage at the end of the transmission line will increase due to the capacity boost effect of the no-load line, which seriously affects the smooth progress of the black start test.

The capacity rise effect of zero-start voltage boost is the main cause of overvoltage, which seriously shortens the service life of insulation equipment

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