Superconductive controllable reactor

Abstract

The invention discloses a superconductive controllable reactor, which comprises a first segmented magnetic yoke, a second segmented magnetic yoke, a working coil, a superconductive excitation coil group and a low-temperature dewar, wherein the first segmented magnetic yoke is an iron core; the second segmented magnetic yoke comprises an excitation iron core group and two same cambered iron cores; the excitation iron core group consists of a plurality of excitation iron cores which are distributed and clamped in the two cambered iron cores of the second segmented magnetic yoke at equal radians; each excitation iron core is sleeved on each superconductive excitation coil; the inductance values of the superconductive excitation coils are the same, and the superconductive excitation coil group is formed by connecting the superconductive excitation coils in series; the two adjacent superconductive excitation coils are sequentially connected with one another according to homonymy terminals and synonym terminals; the number of the superconductive excitation coils and the number of the excitation iron cores are the same and even; and the superconductive excitation coils and the excitation iron cores are arranged in the non-magnetic low-temperature dewar. The superconductive controllable reactor can continuously and adjustably compensate the reactive power of a power grid in a large scale, so that reactive power balance is realized, the stability of a power transmission system is improved, the power transmission capacity is improved, and system overvoltage is suppressed.

Description

technical field [0001] The invention belongs to the reactor technology, in particular to a superconducting controllable reactor. Background technique [0002] The development of high-voltage and ultra-high voltage transmission is an inevitable trend in the development of my country's electric power industry. UHV and ultra-high voltage transmission have put forward higher requirements for the safe and stable operation of the power grid and power quality. Reactive power compensation and reactive power balance in the power grid can improve the stability of the power transmission system, increase the power transmission capacity, and suppress system overvoltage. One of the most widely used reactive power compensation devices in power grids is the controllable reactor. A controllable reactor is a special UHV or EHV reactor. Continuous reactive power compensation is provided by adjusting the reactance of the transmission line load, so that the loss of the transmission line can be...

AI Technical Summary

Problems solved by technology

However, the disadvantage of the quench superconducting reactor is that the reactance cannot be continuously adjusted, and there are problems of quench protection and recovery after quench, and the control is more complicated in practical applications.

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