A superconducting variable leakage reactance controllable reactor

Abstract

The invention relates to a superconducting variable leakage-reactance controllable electric reactor, which is characterized by comprising upper and lower iron yokes (1) and three iron columns, namely a first iron column (2), a second iron column (3) and a third iron column (4), wherein the upper and the lower iron yokes (1) are arranged in parallel, the three iron columns are arranged between the iron yokes (1) and vertical to the iron yokes (1), and the three iron columns are respectively wound with a working copper wire winding assembly, the inner layer of which is further wound with a superconducting excitation winding assembly. Accordingly, the superconducting variable leakage-reactance controllable electric reactor disclosed by the invention has the following advantages that 1, inductance can be adjusted dynamically according to a requirement for reactive power compensation, and reactive power distribution can be optimized to increase the reliability in power supply; and 2, by adoption of superconducting coils, the reactance value of the electric reactor can be changed by controlling the short circuit of the superconducting coils, and the electric reactor is simple in structure, simple to control, good in stability and low in loss.

Description

technical field [0001] The invention relates to a controllable reactor, in particular to a superconducting variable leakage reactance controllable reactor. Background technique [0002] With the development of the national economy, the electric power industry has developed rapidly in recent years. With the increasing demand for electric energy, the requirements for electric energy quality are also getting higher and higher. In recent years, my country's power grid construction has advanced by leaps and bounds. However, the increasingly large grid structure and the increasing number of power plants make the energy distribution of the grid unreasonable. There are many ways to use electricity, resulting in local reactive power shortage or excess. Based on this, reactive power compensation for the power system and regional reactive capacity optimization can effectively maintain the voltage level of the system, improve system stability, and avoid Long-distance transmission of a ...

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Problems solved by technology

[0004] (1) Due to the limited manufacturing level of thyristor valves, traditional controllable reactors cannot be directly connected to high-voltage systems of 35kV and above, and are generally connected through step-down transformers;

[0005] (2) Traditional controllable reactors have large harmonics, and additional filtering equipment needs to be installed for filtering;

[0006] (3) Thyristors require accurate control and complex protection devices;

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