Technology Improvement Scheme and Verification of ±800  kV DC Thyristor Valve

doi:10.3969/j.issn.1000-7229.2016.02.016

Abstract

Abstract:

The technical improvement project of pole Ⅱ lower converter valve in ± 800 kV HVDC
Southern Hami south converter station is the first technical improvement project of certain foreign brand HVDC valve completed in China. This paper firstly introduces the technical defects and technical promotion programs of this foreign brand valve, and then discusses the designs and main innovation points of project commission programs of subsystem, station system and whole system. Site test analysis results show that the running temperature of DC grading resistor of improved thyristor valve is significantly reduced, and thyristor state detection mechanism is improved. There is no protection misoperation, fault trip or commutation failure in the test, and the performance parameters of improved thyristor valve meet the requirements of engineering design.

Key words: high voltage direct current （HVDC）, thyristor valve, type test, project commissioning

CLC Number:

TM 72

HAO Changcheng, WANG Huafeng, YANG Wankai, WANG Binze, ZHOU Liang. Technology Improvement Scheme and Verification of ±800 kV DC Thyristor Valve[J]. Electric Power Construction, 2016, 37(2): 112-117.

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Technology Improvement Scheme and Verification of ±800 kV DC Thyristor Valve

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