电抗器的作用与串联电抗器的特点、作用和选型原则（The function of the reactor and the characteristic, function and selection principle of series reactor）.docVIP

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电抗器的作用与串联电抗器的特点、作用和选型原则（The function of the reactor and the characteristic, function and selection principle of series reactor）.doc

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电抗器的作用与串联电抗器的特点、作用和选型原则（The function of the reactor and the characteristic, function and selection principle of series reactor）

电抗器的作用与串联电抗器的特点、作用和选型原则（The function of the reactor and the characteristic, function and selection principle of series reactor） The function of the reactor and the characteristic, function and selection principle of series reactor Publisher: jtall date: 2012-8-29 One, reactor In the power system, the reactor is widely used. In general, the reactor is divided into series and parallel. In the circuit, the function of the reactor has two points, one is to limit the short circuit current, and the second is to limit the high harmonics in the power grid. The series reactor can also improve the operation condition of reactive power of the power system, and adjust the operating voltage of the grid by changing its number. The main functions of the reactor in the power system are: First, improve the voltage distribution on the long transmission line. Second, the capacitance effect on light and light load lines to reduce transient overvoltage. Third, reduce the voltage of the high voltage bus on the high voltage when the large unit is juxtaposed with the system. Fourth, the reactive power in the line in the light load is balanced in place to prevent the unreasonable flow of reactive power, and also reduce the power loss on the line. Fifth, prevent the possibility of self-excitation resonance in the generator belt long circuit. Sixth, when the neutral point of the reactor is used for small reactance grounding device, it can also be used to compensate the circuit and phase capacitance of the small reactor to accelerate the self-extinguishing of the latent power supply, so as to facilitate the adoption. 2. Series reactor 1. Characteristics of series reactor (1) it can be used in 400V and 660V system. (2) types of reactance: 1%, 6% and 12%. (3) rated insulation level 3KV/min. (4) the reactor noise is not greater than 45dB. (5) temperature rise limit of each part of the reactor: no more than 85K iron core and no more than 95K in electric ring. (6) the difference between any two pha