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Ultra-high voltage flexible paralleling reactor

A technology of ultra-ultra-high voltage and reactors, which is applied in the direction of electrical components, output power conversion devices, and conversion equipment that can be converted to DC without intermediate conversion. It can solve the problems of insufficient precision and slow speed, and achieve maximum flexibility. , The effect of suppressing power frequency overvoltage and operating overvoltage

Active Publication Date: 2011-07-20
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main types of controllable high reactance used in ultra-UHV power grids: one is magnetically controlled, which can be adjusted smoothly, but at a slower speed; the other is graded switching, which can quickly input reactive power compensation But the precision is not enough

Method used

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Embodiment Construction

[0021] The UHV flexible shunt reactor according to the present invention is mainly composed of an attached figure 1 to explain, with figure 1 It is a single-phase diagram, which includes the transformer part, the capacity configuration reactor on the low-voltage side of the transformer, the thyristor group, the circuit breaker and the circuit breaker series reactor, the magnetic control reactor, and the DC excitation part of the magnetic control reactor; the leftmost T1 is Transformer, the left side of the transformer is the high-voltage side, the right side is the low-voltage side, Xmc is a magnetically controlled reactor, which uses DC excitation, and adjusts the output capacity according to the saturation of the DC excitation; X1, X2, and X3 are graded switching reactors, through The first composite switch, the second composite switch, and the third composite switch are used to change the input capacity in stages. The design structure of the present invention enables Xmc t...

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Abstract

The invention provides an ultra-high voltage flexible paralleling reactor which can be applied to design manufacture and modeling of paralleling reactors. The design ensures that the ultra-high voltage flexible paralleling reactor can be rapidly regulated in a grading manner and can be smoothly and accurately regulated within a certain range. The reactive compensation of an ultra-high voltage line integrates rapidness and accuracy, higher flexibility is realized, and power dynamic change of a power system can be adapted.

Description

technical field [0001] The invention belongs to the field of power electronics, and in particular relates to an ultra-ultra-high voltage flexible shunt reactor, which can be applied to the design, manufacture and modeling control of the shunt reactor. Background technique [0002] China will build seven 10-million-kilowatt wind power bases in Gansu, Jiangsu, Inner Mongolia, Hebei and other places to create the "Three Gorges Wind Power Project"; High-voltage lines for long-distance transmission. However, wind power and solar power generation are random and intermittent. With more than 500,000 KW of wind power in operation in the Jiuquan wind power base in Gansu Province, the probability that the rate of change of base output per minute is within 1.5% is about 99%. The actual measurement in southern cities The data shows that the power change of solar energy per minute reaches 70% of the rated power. The uncertainty of the power supply brings great challenges to the power ba...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02P13/00
CPCY02E40/30
Inventor 郑伟杰
Owner CHINA ELECTRIC POWER RES INST