接触网用免维护避雷器

Non-maintenance lightning arrester for contact network

Abstract

The utility model discloses a maintenance-free arrester for the catenary of high-voltage apparatus, the technical problem is that an arrester for the catenary of DC electrified railway is operated without maintenance. The technical solutions are adopted as follows: the utility model comprises an arrester body and an isolation insulator. The arrester is provided with an isolating device for isolating the high voltage of power grid from the arrester when the short trouble of the arrester body and atmosphere over-voltage of the catenary are happened. Compared with the prior art, after the arrester body happens deterioration or short trouble, the fault arrestor body is isolated from the catenary so as to ensure the normal power supply for the catenary; thereby the arrester can be operated in the catenary of DC electrified railway without maintenance, and the reliability of the power supply for the catenary is improved, and the maintenance workload and related costs are reduced significantly. The utility model is applicable for the catenary of DC electrified railway.
本实用新型公开了一种高压电器的接触网用免维护避雷器,要解决的技术问题是交流电气化铁道接触网用的避雷器免维护运行。采用以下技术方案:一种接触网用免维护避雷器,主要由避雷器本体、隔离绝缘子等组成,所述避雷器还设有一套保证避雷器本体短路故障或接触网出现大气过电压后,能将电网高压与避雷器可靠隔离的隔离装置。与现有技术相比,可以在避雷器本体发生劣化或短路故障后,实现故障避雷器本体与接触网的隔离,保证接触网的正常供电,从而实现避雷器在交流电气化铁道接触网的免维护运行,提高接触网的供电可靠性,大幅减少维护工作量及相应费用。适用于交流电气化铁道接触网。

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Cited By (4)

    Publication numberPublication dateAssigneeTitle
    CN-100561612-CNovember 18, 2009中国电力科学研究院Controllable metal oxide arrester for transmission system in supervoltage, extra high voltage
    CN-103944109-AJuly 23, 2014国网上海市电力公司Neck insulating and isolating device of 10-kV column type insulator
    CN-103944109-BAugust 24, 2016国网上海市电力公司一种10kv柱式绝缘子颈部绝缘隔离装置
    CN-106251995-ADecember 21, 2016红光电气集团有限公司一种防雷保护器