Magnetically controlled high voltage dynamic reactive power compensation device

Abstract

The invention discloses a magnetic control type high-voltage dynamic reactive power compensation device, which comprises a controller, a harmonic adjustment reactor and a magnetic control reactor, wherein the controller comprises a collection unit, a shift signal transmission unit and a magnetic control compensation signal transmission unit; the collection unit is used for collecting voltage and current of a principal line in real time; the shift signal transmission unit is used for transmitting a shift signal according to the voltage and the current of the principal line before shifting; the harmonic adjustment reactor comprises a coarse tuning unit; the coarse tuning unit is used for receiving the shift signal and performing shifting according to the shift signal; the magnetic control compensation signal transmission unit is used for transmitting a magnetic control compensation signal according to the voltage and the current of the principal line after shifting; and the magnetic control reactor is used for receiving the magnetic control compensation signal and carrying out reactive compensation according to the magnetic control compensation signal. According to the magnetic control type high-voltage dynamic reactive power compensation device, when the system is in light load, the loss of the device is no-load loss of the harmonic adjustment reactor, and the loss is extremely low and can be ignored; the reactive power required for compensating the magnetic control reactor is relatively low; and the active power loss of the device can be reduced.

Description

technical field [0001] The invention relates to the field of power grid safety, in particular to a magnetically controlled high-voltage dynamic reactive power compensation device. Background technique [0002] As the country's requirements for energy conservation and environmental protection gradually increase, the demand for wind power and photovoltaic grid connection increases, but because of its unstable characteristics, it threatens the security of the power grid. Flexible power transmission devices have become an effective means to ensure the safe operation of the power grid. The dynamic reactive power compensation device is the core of the flexible power transmission device, which can quickly and effectively adjust the reactive power of the grid, suppress voltage fluctuations and flicker, make the power flow distribution of the entire grid load more reasonable, and improve the quality of the grid. [0003] At present, the more popular SVC (Switching Virtual Circuit, sw...

AI Technical Summary

Problems solved by technology

Its efficiency is better at heavy loads; but at light loads, the device needs to compensate for less reactive power, and the high-voltage fixed capacitor bank will still compensate a large amount of reactive power, so the magnetic valve reactor will therefore compensate A lot of reactive power, which makes it consume a lot of real power

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