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A Three-phase Saturable Reactor for Reducing Bounded Uncertainty

An uncertainty and reactor technology, applied in the direction of transformer/inductor core, continuously variable inductor/transformer, transformer/inductor coil/winding/connection, etc., can solve the bounded uncertainty of saturated reactor It can reduce the bounded uncertainty, high efficiency, and reduce the transient response time.

Inactive Publication Date: 2017-04-19
SHANDONG UNIV
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Problems solved by technology

However, the bounded uncertainty of the saturable reactor is still relatively large

Method used

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  • A Three-phase Saturable Reactor for Reducing Bounded Uncertainty
  • A Three-phase Saturable Reactor for Reducing Bounded Uncertainty

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Embodiment

[0035] A typical single-phase saturated reactor such as figure 1 shown. Including terminal I1, terminal II2, terminal III5, terminal IV6, saturated reactor closed-loop iron core 3, and control circuit 4. The closed-loop iron core 3 of the saturable reactor has at least two iron core columns with equal cross-sectional areas and coils; each of the two iron core columns can at least form a magnetic flux closed loop that does not pass through the opposite iron core column.

[0036] The closed-loop iron core 3 may be two closed-loop iron cores that have no passages to each other, for example 1: two square-shaped iron cores. It can also be an integrated closed-loop iron core with mutual passages; for example 2: three iron core columns, and there are yokes at both ends of the iron core columns to connect the three iron core columns. Any two iron core columns can form a magnetic flux closed loop with each other. But there are at least two of them that can respectively form closed lo...

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Abstract

The invention relates to a three-phase saturation resistor capable of reducing bounded uncertainty, which comprises an A-phase saturation resistor, a B-phase saturation resistor and a C-phase saturation resistor, wherein terminals A1, B1 and C1 of the A-phase, B-phase and C-phase saturation resistors are respectively connected A-phase, B-phase and C-phase voltages of a power system; terminals A5, B5 and C5 of the A-phase, B-phase and C-phase saturation resistors are connected together and are connected to a terminal N through a resistor R1; and terminals A6, B6 and C6 of the A-phase, B-phase and C-phase saturation resistors are connected together and are connected to the terminal N through a resistor R2. According to the invention, the bounded uncertainty of the three-phase saturation resistor can be reduced; and no matter how the change of the working current of the three-phase saturation resistor, the power frequency current in a neutral line of the three-phase saturation resistor is always zero, and the resistors can not consume the energy of the power frequency current.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation in power systems, in particular to a three-phase saturated reactor for reducing bounded uncertainty. Background technique [0002] Reactors are widely used in power systems. The series reactor can limit the short-circuit current; the shunt reactor can limit the overvoltage; the combination of the reactor and the capacitor can form a filter circuit. In some application fields, the reactance value of the reactor is fixed; in some application fields, the reactance value of the reactor should be adjusted continuously with the change of the power system operation mode. The controllable saturable reactor (also called: saturable reactor, magnetron reactor) whose reactance value can be adjusted continuously is an important research topic. [0003] The saturable reactor uses the saturation characteristics of the closed-loop iron core of the saturable reactor to change the re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F21/02H01F27/24H01F27/28H01F27/40H02P13/00
Inventor 李晓明
Owner SHANDONG UNIV
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