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Flexible direct-current transmission control and protection system

A flexible DC transmission, control and protection technology, applied in the direction of power transmission AC network, etc., can solve the problems of unfavorable flexible DC transmission control and protection system development and debugging, and achieve the effect of efficient development and debugging, clear structure

Inactive Publication Date: 2019-07-16
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are related schemes related to flexible DC transmission control and protection, which either focus on the design of the overall function, or focus on the design of one or several aspects, such as controller algorithm, parameter design, capacitor voltage balance control, modulation strategy, and circulation suppression. strategies, etc., which are not conducive to the development and debugging of flexible HVDC control and protection systems

Method used

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  • Flexible direct-current transmission control and protection system
  • Flexible direct-current transmission control and protection system

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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 of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] The embodiment of the present invention discloses a flexible direct current transmission control and protection system, see figure 1 As shown, the system includes: station control module 1, unlocking control module 2, measurement signal processing module 3, power control module 4, current limiting control module 5, current inner loop control module 6, converter valve, which are set independently of each other Control module 7 and fault pro...

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Abstract

The invention discloses a flexible direct-current transmission control and protection system. The flexible direct-current transmission control and protection system comprises a station control module,an unlocking and locking control module, a measurement signal processing module, a power control module, a current amplitude limiting control module, a current inner ring control module, a convertervalve control module and a failure protection module. According to the flexible direct-current transmission control and protection system, the flexible direct-current transmission control and protection system is modularized, different work tasks are carried out by different modules, each module can be set independently, the function of each part adopts modular design independently, and the systemhas the characteristics of clear structure and efficient development and debugging.

Description

technical field [0001] The invention relates to the field of flexible direct current transmission, in particular to a flexible direct current transmission control and protection system. Background technique [0002] Flexible DC transmission is a new type of power transmission technology based on voltage source converters, self-shutdown devices and pulse width modulation (PWM) technology. Compared with the traditional DC transmission technology, the flexible DC transmission technology has the advantages of being able to supply power to the passive network, no commutation failure, and easy to form a multi-terminal DC system. Applications such as improving the traditional DC operating characteristics have shown huge economic and technological advantages. It is an important technical basis for the construction of DC power grids and the development of "Energy Internet" in the future, and it is also one of the important development directions in the field of power transmission in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36
CPCH02J3/36Y02E60/60
Inventor 罗超郭琦林雪华郭海平卢远宏
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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