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Dynamic trend control method based on wide-scope controllable transformer comprising bidirectional power tubes

A dynamic power flow and control method technology, which is applied to the AC network with the same frequency from different sources, and the voltage adjustment of the AC network, etc., can solve the problems of mutual influence between FACTS device controllers, difficulty in popularization and application, and large loss

Active Publication Date: 2017-01-04
上海驹电电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of power system control, the current FACTS technology also has great limitations:
[0007] (1) FACTS device controllers interact with each other, leading to performance deterioration;
[0008] (2) The cost of the project is high, and it is difficult to popularize and apply;
[0009] (3) The loss of itself is relatively large;
[0010] (4) Power system stability problems caused by FACTS device failure

Method used

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  • Dynamic trend control method based on wide-scope controllable transformer comprising bidirectional power tubes
  • Dynamic trend control method based on wide-scope controllable transformer comprising bidirectional power tubes
  • Dynamic trend control method based on wide-scope controllable transformer comprising bidirectional power tubes

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Embodiment Construction

[0085]The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0086] see first figure 1 , figure 1 It is a structural schematic diagram of a dynamic power flow control device based on a wide range controllable transformer of an output side switch of the present invention. It can be seen from the figure that a dynamic power flow control device based on a wide-range controllable transformer with a bidirectional power tube includes: a wide-range controllable transformer 1, a measurement and control module 2, a first power unit 3 and a second power unit 4, Cross-phase conversion module 5, third filter capacitor 6 and fourth filter capacitor 7, input voltage transformer 8, output voltage transformer 9 and output current transformer 10:

[0087] The secondary side of the wide-range controllable transformer 1 includes a main joint "1", a po...

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Abstract

The invention discloses a dynamic trend control method based on a wide-scope controllable transformer comprising bidirectional power tubes. By use of a rapidly conducted and broken electric electronic switch, conduction and breaking of a tap joint at the output side (secondary side) of the wide-scope controllable transformer are controlled, another two phases of windings are connected in series with the side of each phase of the tap joint of the wide-scope controllable transformer, at the same time, the four bidirectional power tubes are additionally arranged for changing the conduction directions of intersected-phase windings, the phase and the amplitude of output voltages of the controllable transformer can be changed in a maximum scope, adjustment of active power and reactive power is realized, since conduction of the tap joint of the wide-scope controllable transformer is controlled, the dynamic trend of a power network can be adjusted and controlled, and the method has the advantages of low cost and high control reliability of the dynamic trend.

Description

technical field [0001] The invention relates to the technical field of flexible AC power transmission, in particular to a dynamic power flow control device and a control method based on a wide range controllable transformer including a bidirectional power tube. Background technique [0002] With the interconnection of large-scale power systems and the use of various new equipment, while making power generation and transmission more economical and efficient, the scale and complexity of the power system have also increased, and the possibility of the power grid operating on the edge of the stability limit has also greatly increased. . At present, my country has reached a new stage of regional power grid interconnection and national unified networking. Large-scale interconnection brings many advantages, but grid operation and stability control will become more complex. The flexibility of grid operation, controllability of power flow and grid stability have become more and mor...

Claims

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Application Information

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IPC IPC(8): H02J3/06H02J3/12
CPCH02J3/06H02J3/12
Inventor 冯琳李国杰江秀臣汪可友韩蓓王琨
Owner 上海驹电电气科技有限公司
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