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Delay compensation system of MMC valve-controlled pulse distribution screen

A pulse distribution and delay compensation technology, applied in the field of simulation, can solve the problems that the control characteristics of A and B power modules cannot be completely consistent, the control link delays are different, and the control link delay compensation can not be achieved. Flexibility, avoid the conversion process, realize the effect of delay compensation

Active Publication Date: 2020-01-14
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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AI Technical Summary

Problems solved by technology

[0007] The control link of the Class B power module not connected to the pulse distribution screen is quite different from that of the Class A power module connected to the pulse distribution screen. The delay of the control link of the two is different, and the modification scheme does not compensate for the delay of the control link. , the control characteristics of Class A and Class B power modules cannot be completely consistent

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  • Delay compensation system of MMC valve-controlled pulse distribution screen
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  • Delay compensation system of MMC valve-controlled pulse distribution screen

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] see figure 1 , is a schematic structural diagram of a delay compensation system for an MMC valve-controlled pulse distribution panel provided in Embodiment 1 of the present invention, including: a valve-controlled main control panel 10, a pulse distribution panel 20 for realizing power module pulse distribution, and a pulse interface panel 30 , protocol conversion interface screen 40, FPGA50 for simulating power modules, upper layer DC control and protection...

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Abstract

The invention discloses a delay compensation system of an MMC valve-controlled pulse distribution screen. The delay compensation system comprises a valve-controlled main control screen, a pulse distribution screen realizing power module pulse distribution, a pulse interface screen, a protocol conversion interface screen, an FPGA used for simulating a power module, an upper-layer direct-current control protection device used for generating modulated waves and issuing the modulated waves to a valve-controlled device, an external circuit real-time simulator used for simulating an MMC-HVDC converter valve external circuit, a delay timer and a real-time simulation interface used for being connected with the upper-layer direct-current control protection device and the external circuit real-timesimulator, wherein the delay timer measures delay time. According to the scheme, control link delay compensation of the MMC valve-controlled pulse distribution screen connected into a real-time simulation system can be flexibly realized, and simulation system delay and field delay can be maintained consistent according to an actual demand.

Description

technical field [0001] The invention relates to the field of simulation technology, in particular to a delay compensation system of an MMC valve-controlled pulse distribution screen. Background technique [0002] The Modular Multilevel Converter (MMC) adopts the power module cascading method to construct the converter valve, which avoids the direct series connection of a large number of devices, reduces the requirements for device consistency, and has the advantages of low manufacturing difficulty and low loss. The advantages of low voltage, low step voltage, high waveform quality, and strong fault handling ability have been widely used in flexible DC transmission and Static Synchronous Compensator (STATCOM). [0003] For the MMC valve control system, the pulse distribution panel is the connection hub between the flexible valve control panel cabinet and the power module. Mainly realize the following functions: (1) Communication with the upper valve control panel cabinet: re...

Claims

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Application Information

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IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 陈钦磊郭琦饶宏黄立滨林雪华郭海平李书勇梅勇田庆
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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