共查询到15条相似文献,搜索用时 203 毫秒
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特高压直流输电晶闸管阀成套运行试验装置研制 总被引:2,自引:1,他引:1
成套运行型式试验装置是实现特高压直流输电(ultra high voltage direct current transmission,UHVDC)晶闸管阀研发和工程应用的基础和前提条件,在遵循IEC60700-1标准,在调研现有相关试验装置和比较试验方法的基础上,研制一套采用双注入合成试验方法的UHVDC晶闸管阀运行试验装置,为我国UHVDC晶闸管阀的研发与工程应用提供了试验支撑。介绍该装置的主回路拓扑,试验回路的工作原理及其参数设计,控制保护系统设计及其保护策略,并给出了相关试验结果,结果表明,该试验装置的研制是成功的,满足UHVDC晶闸管阀研发的需要。 相似文献
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三峡―常州(3G)HVDC晶闸管阀使用的是高额定容量的晶闸管,若用传统的背靠背回路进行试验,需要巨大的投资。为此,开发了一合成试验回路,并成功用于试验三峡晶闸管阀。该回路使用常规的背靠背试验回路作电流源,用振荡回路作电压源,能够充分再现HVDC晶闸管阀的4种运行状态。所产生的试验电应力大于或等于运行条件下的预计电应力。型式试验结果表明,三峡HVDC晶闸管阀完全满足要求。由于试验参数普遍高于设计要求,表明晶闸管阀的设计裕度较大。 相似文献
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用于HVDC晶闸管模块运行试验的新合成试验回路 总被引:3,自引:5,他引:3
现代晶闸管阀的高额定容量使其难以在试验室用背靠背试验回路进行试验,用合成试验回路对晶闸管阀的设计进行验证是一种替代方法。设计合成试验回路的核心在于,如何正确地再现作用在晶闸管阀上的负荷。为此,重点描述了换流阀在4种运行状态下的电压和电流负荷。ABBPowerSystems开发了一种新的合成试验回路,正确地再现了运行中施加在HVDC晶闸管阀上的电压和电流负荷。验证试验表明,该回路的设计是成功的。 相似文献
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晶闸管换流阀作为传统高压直流输电的重要设备,其可靠性和故障耐受性能与高压直流输电工程的安全可靠运行密切相关。而短路故障是晶闸管换流阀可能出现的最严重的故障之一,有必要对其进行故障分析和试验验证。文章研究了相关标准中对于短路故障的试验要求,分析了高压直流输电晶闸管换流阀的各种典型故障特性和现有的分别采用短路发电机和电容器组作为短路试验电源的两种故障电流试验方法,并从故障电流热效应等效性和故障电流试验电压等效性方面分析了两种试验方法的特点。 相似文献
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With the growth of capacity of high voltage direct current(HVDC) transmission lines,the ratings of thyristor valves,which are one of the most critical equipments,are getting higher and higher.Verification of performance of thyristor valves particularly designed for HVDC project plays an important role in the handover of products between the manufacturer and the client.Conventional test facilities based on philosophy of direct test cannot meet the requirements for modern thyristor valves.New test facilities with high ratings are necessarily built based on philosophy of synthetic test.Over the conventional direct test circuit,the later is an economical and feasible solution with less financial investment and higher test capability.However,the equivalency between the synthetic test and the direct test should be analyzed technically in order to make sure that the condition of verification test in a synthetic test circuit should satisfy the actual operation condition of thyristor valves existing in a real HVDC project,just as in a direct test circuit.Equivalency analysis is focused in this paper,covering the scope of thyristor valves' steady state,and transient state.On the basis of the results achieved,a synthetic test circuit of 6 500 A/50 kV for operational tests of thyristor valves used for up to UHVDC project has newly been set up and already put into service in Xi'an High Voltage Apparatus Research Institute Co.,Ltd.(XIHARI),China.Some of the results have been adopted also by a new national standard of China. 相似文献
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Garabi Ⅱ HVDC晶闸管阀的运行试验 总被引:1,自引:0,他引:1
用合成试验回路对GarabiⅡHVDC晶闸管阀进行了运行试验。这个由传统的背靠背直接试验回路和电压振荡回路组成的合成试验回路能够产生晶闸管阀在实际运行中承受的电流和电压。该试验回路参数的选取接近系统的实际参数。从合成试验回路所获得的样品试验结果和以前从传统的背靠背试验回路获得试验结果是相同的。然而,这种合成试验回路更具有技术上的优势,并且在经济上也优于背靠背直接试验回路。 相似文献
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General Consideration of Measuring System for Operational Test of Thyristor Valves of Ultra High Voltage DC Power Transmission 总被引:1,自引:1,他引:0
ZHOU Hui-gao XU Fan ZHANG Chang-chun HU Zhi-long LIU Pu HUANG Xi-dong WAN Gan DING Qian 《高压电器》2011,47(9):1-5
Thyristor valve is one of the key equipments for ultra high voltage direct current(UHVDC) power transmission projects.Before being installed on site,they need to be tested in a laboratory in order to verify their operational performance to satisfy the technical specification of project related.Test facilities for operational tests of thyristor valves are supposed to enable to undertake more severe electrical stresses than those being applied in the thyristor valves under test(test objects).On the other hand,the stresses applied into the test objects are neither higher nor lower than specified by the specification,because inappropriate stresses applied would result in incorrect evaluation of performance on the test objects,more seriously,would cuase the damage of test objects with expensive cost losing.Generally,the process of operational tests is complicated and performed in a complex synthetic test circuit(hereafter as STC),where there are a lot of sensors used for measuring,monitoring and protection on line to ensure that the test circuit functions in good condition.Therefore,the measuring systems embedded play a core role in STC,acting like "eyes".Based on the first project of building up a STC in China,experience of planning measuring systems is summarized so as to be referenced by related engineers. 相似文献