Dynamic reactive compensation system based on magnetic control electric reactor

Abstract

The invention relates to a dynamic reactive compensation system based on a magnetic control electric reactor. The dynamic reactive compensation system comprises a passive filter FC and an MCR (Magnetic Control Reactor), wherein the passive filter FC is used for reactive compensation and harmonic filter, the MCR is used for balancing an inductive load. The dynamic reactive compensation system disclosed by the invention has the advantages that the reliability if high, 20-year basic maintenance-free running can be realized, and the maintaining and repairing cost can be reduced to a large extent; the response ability is quick, and the response speed can be up to 20ms; the regulating range is large, and the regulating range in more than 100 times can be reached; the occupied area is small, the installation is convenient, and a device can be naturally cooled by adopting an oil immersion mode; the harmonic wave is small and has no pollution to a power grid and has no any bad influence on a capacitor group, and the traditional device is conveniently utilized in a reform occasion; the overload ability is strong, 30-second 100% overload and half-hour 40% overload can be realized; the consumption is less, the MCR is in large capacity, the consumption is less than 0.5%, and in a common system, only 0.8%-1.5% of the consumption can be realized; the overvoltage ability is strong, the voltage limiting ability is good, and the dynamic reactive compensation system has a natural automatic voltage limiting ability; and no electromagnetic pollution works on the environment and the human body.

Description

technical field [0001] The invention relates to the field of energy-saving control of power grids and power transmission and transformation equipment, in particular to a reactive power compensation system based on a magnetic control reactor for high-voltage dynamic controllable reactive power compensation. Background technique [0002] At present, the main devices for reactive power compensation are capacitors, reactors and a small amount of dynamic reactive power compensation devices. Switching (circuit breaker) capacitors and reactors are adjusted discretely, and can only be switched in groups, and limited by the capacity of the transformer, frequent operations and ideal compensation effects cannot be achieved. Inrush currents and overvoltages caused by switching switched capacitors are very harmful to the system and the equipment itself. The existing phase-controlled reactor dynamic compensation device is not only expensive, but also occupies a large area, has a complica...

AI Technical Summary

Problems solved by technology

The switch (circuit breaker) switching capacitor and reactor group adjustment method is discrete, and can only be switched in groups, and is limited by the capacity of the transformer, so it cannot be frequently operated and the ideal compensation effect can be achieved.

The inrush current and overvoltage caused by switching capacitors are very harmful to the system and the equipment itself

The existing phase-controlled reactor dynamic compensation device is not only expensive, but also occupies a large area, has a complex structure, and has low reliability

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