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Method for inter-station communication of three-terminal direct-current power transmission system

A technology of DC transmission system and communication mode, which is applied in the field of inter-station communication, can solve the problem that the communication configuration between stations cannot be directly applied to the three-terminal DC transmission system, etc., and achieves the promotion value of large-scale projects and ensures the effect of safe and stable operation.

Inactive Publication Date: 2020-11-06
XUJI GRP +2
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  • Abstract
  • Description
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Problems solved by technology

Based on the above reasons, the inter-station communication configuration of the conventional two-terminal DC transmission system cannot be directly applied to the three-terminal DC transmission system

Method used

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  • Method for inter-station communication of three-terminal direct-current power transmission system
  • Method for inter-station communication of three-terminal direct-current power transmission system

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0017] Further detailed description will be given below in conjunction with the accompanying drawings.

[0018] The basic idea of ​​the present invention is to establish an inter-station communication system of a three-terminal direct current transmission system to realize data interaction among three converter stations, to complete the key control, protection and monitoring signal transmission of the direct current trans...

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Abstract

The invention discloses a design method for inter-station communication of a three-terminal direct-current power transmission system. The method can build a data communication channel among three converter station control protection systems, transmits key control, protection and monitoring signals of the direct-current power transmission system, and guarantees the safe and stable operation of thedirect-current power transmission system. The invention provides an inter-station communication configuration method of a three-terminal direct-current power transmission system, a software and hardware configuration scheme is provided, and a data transfer sending scheme under the condition that a certain port of a certain converter station fails is given. Engineering application is met, and greatengineering popularization value is achieved.

Description

technical field [0001] The invention relates to the technical field of UHV / UHV direct current transmission, in particular to a method for inter-station communication of a three-terminal direct current transmission system. Background technique [0002] Compared with the two-terminal DC transmission system, the three-terminal DC transmission system can be connected to multiple AC systems, and the operation mode is more flexible. It can realize multiple power supplies and multiple drop points, making the power transmission method more economical and reasonable. . Among them, a converter station in the three-terminal direct current transmission can adjust its rectification / inversion operation mode through polarity conversion, which can be used as a power source to transmit electric energy to the outside, and can also be used as a load to absorb power. [0003] For the two-terminal DC transmission system, since there is only one sending end and one receiving end, the inter-stati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36H02J13/00H04L12/24H04L29/12H04L12/42H02H1/00
CPCH02J3/36H02J13/00006H02J13/00032H04L41/0823H04L12/42H02H1/0061H04L61/5007Y02E60/60
Inventor 李星奎康建爽戴国安毕延河孙巍峰崔晨周晓风付艳李传西李卓凡
Owner XUJI GRP
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