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Regulation method for a high voltage DC transmission plant with DC link and self-commutated inverters

一种变流器、直流电压的技术，应用在交流功率输入变换为直流功率输出、交流功率输入变换为交流功率输出、电气元件等方向，能够解决不可能控制等问题

Inactive Publication Date: 2013-07-31
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this method cannot be applied to VSC controlling device

Method used

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  • Regulation method for a high voltage DC transmission plant with DC link and self-commutated inverters
  • Regulation method for a high voltage DC transmission plant with DC link and self-commutated inverters
  • Regulation method for a high voltage DC transmission plant with DC link and self-commutated inverters

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Experimental program
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Effect test

Embodiment Construction

[0028] figure 1 Schematically shows a multi-converter 1 The devices are connected to the AC power grid 3 through the transformer 2 respectively. Each converter 1 is a so-called voltage source converter (VSC) with turn-off power semiconductors, such as IGBTs or GTOs, which are each connected in antiparallel to a freewheeling diode. In this case, each converter 1 is connected as a DC voltage connection to a DC grid 4 , which may have any desired topology. Furthermore, each VSC 1 is associated with a smoothing choke 5 . VSC 1 , transformer 2 , smoothing choke 5 are parts of a rectifier station or an inverter station, depending on how the individual VSCs are controlled via control units or control devices not shown in the figure. exist figure 1 In , those rectifier stations with VSCs operating as rectifiers are denoted by r1, r2, r3...rr, where the inverter stations with VSCs operating as inverters are denoted by i1, i2, i3...ii. exist figure 1 It can also be seen in , t...

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Abstract

In the method for closed-loop control of at least two converters in an energy transmission and / or distribution system, each rectifier regulator and each inverter regulator provides a differential DC voltage from the difference between a given set DC voltage and the relevant received measured DC voltage, and also provides a differential DC current from a differential DC current from the difference between a set DC current and the corresponding received measured DC current. Each converter is a self-commutated converter with power semiconductors. The rectifier regulation of the provided converter is regulated such that the sum of the product of the differential voltages and the value of given set DC current at the corresponding rectifier and the differential current is a minimum. The inverter regulation regulates the corresponding inverter such that the sum between the differential voltage and the differential current is a minimum.

Description

technical field [0001] The invention relates to a method for regulating at least two converters in the field of energy transmission and / or distribution, wherein the converters are adjustable as rectifiers or inverters and are interconnected via a DC voltage connection, wherein: Each converter measures a measured DC voltage (Udc_r1, ... Udc_rr; Udc_i1, ... Udc_ii) and a measured DC current (Idc_r1, ... Idc_rr; Idc_i1, ... Idc_ii) and transmits them to A rectifier regulating device for regulating each rectifier or an inverter regulating device for regulating each corresponding inverter, wherein each rectifier regulating device and each inverter regulating device (12) is respectively formed in a predetermined The difference between the nominal voltage (Udco) and the respective received measured DC voltages (Udc_r1, ... Udc_rr, Udc_i1, ... Udc_ii) to obtain the differential DC voltage (du) and is additionally formed at the marked Weigh the difference between the currents (Idco_r1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/36H02M5/458
CPCY02E60/60H02M5/4585H02J3/36H02M7/7575H02M2007/4835H02M7/4835
Inventor 托拜厄斯·伯恩哈德迈克·多玛希克乔格·多恩英戈·尤勒弗兰兹·卡勒锡克-梅尔乔格·兰约翰-威廉·斯特劳斯夸克-布·图卡斯滕·维特斯托克克劳斯·乌尔夫琳格于尔根·里蒂格奥利弗·温贾科布
Owner SIEMENS AG