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A debugging method for ±800kv UHVDC transmission engineering system

A technology of UHV DC and debugging methods, which is applied in the direction of DC network circuit devices, measuring power, electrical components, etc., and can solve problems such as public reports on the debugging methods of ±800kV UHV DC transmission systems that have not been seen.

Active Publication Date: 2016-01-20
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no similar public report on the debugging method of ±800kV UHV HVDC transmission system at home and abroad

Method used

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  • A debugging method for ±800kv UHVDC transmission engineering system
  • A debugging method for ±800kv UHVDC transmission engineering system
  • A debugging method for ±800kv UHVDC transmission engineering system

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Embodiment Construction

[0165] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0166] The present invention provides a ±800kV UHV DC power transmission engineering system. The system includes a converter station at both ends and a DC transmission line. The converter stations at both ends are connected through the DC transmission line; the converter stations at both ends adopt bipolar commutation. Converter, each pole converter includes two 12-pulse converters connected in series, the series voltage is connected in series according to ±(400+400) kV;

[0167] The DC unipolar normal operating DC voltage of the single-ended converter station is ±800kV, and the operating DC voltage of the single 12-pulse converter is 400kV. The wiring diagram of the main circuit of the ±800kV UHV DC transmission project provided by the present invention is as follows figure 1 shown.

[0168] According to the design pr...

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Abstract

The invention relates to a debugging method for a + / - 800 kV ultra-high voltage direct-current transmission project system. The system comprises convertor stations at two ends and a direct-current transmission line. The debugging method for the + / - 800 kV ultra-high voltage direct-current transmission project system comprises the following steps that (I) the + / - 800 kV ultra-high voltage direct-current transmission project system is subjected to calculation and analysis; (II) a debugging scheme for the + / - 800 kV ultra-high voltage direct-current transmission project system is formed; (III) a debugging plan for the + / - 800 kV ultra-high voltage direct-current transmission project system is made; (IV) the + / - 800 kV ultra-high voltage direct-current transmission project system is subjected to a field debugging test; (V) the + / - 800 kV ultra-high voltage direct-current transmission project system is subjected to a pilot run; (VI) the + / - 800 kV ultra-high voltage direct-current transmission project system is subjected to a debugging summary. According to the debugging method for the + / - 800 kV ultra-high voltage direct-current transmission project system, a single current converter and a monopolar and bipolar system debugging test are combined for the first time, therefore, the efficiency of a system debugging test is improved, the system debugging speed is increased, good conditions are created for finishing system debugging in advance, and experience and reference are provided for the debugging of a direct-current transmission project system in future.

Description

technical field [0001] The invention relates to the field of ultra-high voltage direct current transmission, in particular to a ±800kV ultra-high voltage direct current transmission engineering system and a debugging method thereof. Background technique [0002] The ±800kV UHV DC transmission project transmits electric energy in the form of direct current. Compared with the ±500kV DC transmission project, it is characterized by large power transmission capacity, long distance of more than 2000km, multiple main circuit wiring operation modes, and complex system structure. The commissioning of the UHV DC transmission system is a very complicated system engineering, which involves more primary and secondary equipment of the DC project than the ±500kV DC transmission project, more test items, and also involves the operation mode of the AC system, which requires careful assessment and Inspection and system commissioning are closely combined with the characteristics of the UHV DC ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J1/00G01R31/00
Inventor 杨万开印永华曾南超班连庚王华伟李新年谢国平王明新蒋卫平王亮刘耀孙栩杨鹏雷霄张晋华朱艺颖陈凌芳杨超
Owner STATE GRID CORP OF CHINA
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