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原文
State Grid UHV DC converter valve type-tested Recently, the entire vehicle electric bicycles, electric power technology and equipment Co., Ltd. by China independently developed the ± 800 kV HVDC converter valve type tested first in China. The converter valve with independent intellectual property rights, pilot projects and test parameters fully comply with International Electrotechnical Commission standards, the technical indicators have reached international advanced level, creating a field of high voltage DC test parameters of the fault current record. The converter valve modular structure, easy-to-site installation and maintenance, with a strong ability to prevent electromagnetic interference and seismic capacity, with 6-inch nominal current 4500 safety rated voltage 8500 V thyristors, performance indicators fully meet the ± 800 one thousand volts HVDC construction requirements will be applied to ± 800 kV Jinping - Sunan Te pressure safety valve direct current transmission project. The power equipment companies in the ± 800 kV DC transmission project converter valve technology research and development has gone through the introduction of self-absorption and a two-stage design and development. R & D at the beginning, in the face of foreign companies in HVDC converter valve design and key components in the case of adoption of technical blockade, through trial and validation of the company, successfully mastered the HVDC converter valve design, manufacture, testing and debugging techniques and key components of the technical parameters and performance indicators. Enter the self-design and development phase, the company has completed a special pressure valve for HVDC insulation coordination studies, and high-voltage electric field distribution is calculated shielding technology research, seismic analysis and design, heat and cooling system design, system design valve , converter valve for valve testing methods and other mechanical issues, mastered the ± 800 kV DC transmission project for a number of key technologies flow valve. The success of the converter valve developed to enhance the domestic HVDC transmission project independent of the ability to build high voltage direct current transmission project to provide a more effective protection.
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译文：

译文：
电动自行车全车近日，由中国电力技术装备有限公司自主研制的±800千伏特高压直流输电工程换流阀在国内率先通过型式试验。该换流阀具有完全自主知识产权，试验项目和试验参数完全符合国际电工委员会的标准要求，各项技术指标均达到国际先进水平，创造了特高压直流领域故障电流试验参数的最高纪录。　　该换流阀采用模块化结构，易于现场安装和维护，具有较强的防止电磁干扰能力和抗震能力，采用6英寸额定电流4500安、额定电压8500伏晶闸管，性能指标完全满足±800千伏特高压直流输电工程建设要求，将被应用于±800千伏锦屏—苏南特高压安全阀直流输电工程。　　中电装备公司在±800千伏直流输电工程换流阀研发方面经历了技术引进消化吸收和自主设计研发两个阶段。研发之初，面对国外公司在特高压直流输电换流阀设计及关键元器件方面采取技术封锁的情况，该公司通过反复试验验证，成功掌握了特高压直流换流阀的设计、制造、试验和调试技术以及关键元器件的技术参数与性能指标。进入自主设计研发阶段后，该公司先后完成了特压直流输电换流阀绝缘配合的研究、电场分布的计算与高压屏蔽技术的研究、抗震分析和设计、散热与冷却系统设计、阀控系统设计、换流阀试验方法与换流阀机械结构等多个课题，掌握了±800千伏直流输电工程换流阀的多项关键技术。　　该换流阀的成功研制，增强了国内特高压直流输电工程的自主化能力，为建设特高压直流输电工程提供了更加有力的保障。

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