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Device for regulating a high-voltage direct-current transmission system

A high-voltage direct current transmission and equipment technology, applied in the direction of output power conversion device, AC power input conversion to DC power output, electrical components, etc., can solve the problems of increasing the adjustment inertia and reducing the adjustment stability of data communication, and achieve the adjustment method Clear, easy-to-adjust effect

Active Publication Date: 2010-10-06
SIEMENS ENERGY GLOBAL GMBH CO & KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This solution according to the prior art has the disadvantage that a fast data communication connection is required between the current regulation unit common to both rectifier groups and a further regulation unit reserved at the group level (Gruppen level)
Despite this fast communication link, according to the prior art, however, undesired delays occur, which result in data communication with increased control inertia and reduced control stability

Method used

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  • Device for regulating a high-voltage direct-current transmission system
  • Device for regulating a high-voltage direct-current transmission system
  • Device for regulating a high-voltage direct-current transmission system

Examples

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Embodiment Construction

[0017] figure 1 A converter 1 is shown, which is connected via a DC circuit 2 to another converter, not shown. The converter 1 has two series circuits 3 composed of rectifier tube groups 4 , which can respectively be bridged by a DC voltage switch 5 . The rectifier tube group 4 is constructed as a so-called twelve-pulse bridge circuit, ie comprising two six-pulse bridges 4 a and 4 b connected in series with each other, which are respectively connected to a HVDC transformer 7 . Furthermore, the HVDC transformer 7 has a primary winding 9 which is connected to the AC grid 8 . It should be pointed out that the AC grid is three-phase, however in figure 1 Only one phase is shown for clarity. The secondary phase windings 6 of the HVDC transformer are connected differently from each other to provide a phase difference.

[0018] The converter 1 can be disconnected from the AC network 8 by means of an AC voltage switch 10 . Each series circuit 3 consisting of a semiconductor rectif...

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PUM

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Abstract

In order to provide a device (15) for regulating a high-voltage direct-current transmission system, comprising at least one series connection (3) made of valve groups (4), each having controllable power semiconductors, wherein the device (15) has at least one current sensor (23, 24) for detecting a valve group current IdHV, IdN flowing across the series connection (3) and at least one current regulator (16), which is connected at least to one current sensor and is equipped to adjust the valve group current IdHV, IdN by means of control signals, wherein said device provides low control delay and increased regulating stability, according to the invention for each valve group (4) a current regulator (16) is provided, which for the control of the power semiconductors of the valve group (4) associated with said regulator is connected to said semiconductors, wherein each current regulator (16) of the series connection (3) is connected to a compensating unit (25), which is equipped to adjustthe control signals of the current regulators (16) connected thereto.

Description

technical field [0001] The invention relates to a device for regulating a high-voltage direct current transmission system with at least one series circuit consisting of rectifier tubes each having controllable power semiconductors, wherein the device has a means for detecting the flow through the series circuit. at least one current sensor for the current of the rectifier tube group and at least one current adjustment unit connected to the at least one current sensor and used for adjusting the current of the rectifier tube group by means of a control signal. [0002] The invention also relates to a high voltage direct current transmission device having such a device. Background technique [0003] Such devices and such HVDC installations are known in the prior art. It is common practice in the field of electrical energy transmission and distribution to convert alternating current to direct current through a converter and transmit it to another converter, which in turn conver...

Claims

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Application Information

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IPC IPC(8): H02J3/36H02M7/757
CPCY02E60/60H02J3/36H02M7/7575
Inventor 丹尼斯·布兰特约翰·梅斯纳托斯滕·普里布
Owner SIEMENS ENERGY GLOBAL GMBH CO & KG
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