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MTA_VRT 软件:并网设备VRT测试,现场即出可提交结论

MTA_VRT 软件:并网设备VRT测试,现场即出可提交结论

本文导读

致远仪器MTA_VRT高/低电压穿越测试软件,配合PA6000H/PA8000功率分析仪,面向并网设备VRT测试,以数千秒连续记录、200余项参数内置标准自动判标、端到端流程覆盖,帮助工程师测试现场即出可提交结论。

 VRT测试进入更严格的标准化阶段

电压穿越(VRT,Voltage Ride-Through)是指并网设备在电网电压发生暂降或暂升时,维持不脱网运行的能力,分为低电压穿越(LVRT)和高电压穿越(HVRT)两类。随着光伏、风电、储能在电网中的渗透率持续提升,VRT能力直接关系到电网扰动下的运行稳定性,相关并网标准也持续细化。

近年,三大领域相关标准相继更新。光伏领域,GB/T 19964-2024 新增高电压穿越、不对称故障下低电压穿越动态无功支撑要求、连续故障穿越等测试场景;风电领域,GB/T 25387.2-2021 明确风电变流器高/低电压穿越试验方法;储能领域,GB/T 36548-2024 将故障穿越列为储能电站并网测试项目,并于 2025年1月1日 正式实施。

新版标准带来的不只是测试场景增多:工程师需要连续记录数千秒的扰动过程、计算多达上百项派生参数,并将每项结果与标准阈值逐一对照。在连续故障穿越等复杂场景下,仅靠通用数据采集工具加人工核查,既耗时、又容易遗漏,人工套用标准还易引入判标偏差。

1GB/T 19964-2024电压穿越测试

 MTA_VRT高/低电压穿越测试软件

致远仪器MTA_VRT高/低电压穿越测试软件支持按目标标准灵活配置额定电压、额定功率、电压跌落/升高深度、无功电流注入值等参数,配置完成后即可自动输出判标结果,覆盖从数据记录到报告导出的端到端分析流程,记录不漏关键波形、计算结果与标准保持一致、测试项全面覆盖,帮助工程师在测试现场即出可提交结论。

记录阶段:

超长时“黑匣子”记录,不漏关键波形

VRT测试中,被测设备的响应异常具有偶发性,出现时刻难以预判。MTA_VRT软件的记录时长主要取决于硬盘容量,支持数千秒连续记录,哪怕是第2999秒才出现一次10ms电压跌落,也能完整复现瞬态波形。

采集过程中,软件支持波形实时滚动显示,屏幕右侧持续呈现最新波形,可随时观察信号动态。

2软件波形记录功能

计算阶段:

内置200+项参数,测完即得结果

无功电流响应时间、无功电流注入有效值、有功功率恢复时间等派生参数,需基于采集数据计算得出,无法直接从原始波形读取。MTA_VRT软件内置计算项覆盖标准要求:单相高低压穿越支持30余项,三相高低压穿越支持200余项。测试完成后,软件自动批量输出各项参数结果,在现场即时查看。

分析阶段:

光标定位关键时刻,结果实时刷新

在需要手动核查特定时间段的场景中,MTA_VRT软件提供多种交互式区间定位功能,可将光标快速跳转至“电压跌落开始”“无功电流达到要求注入值”等标准关注的时间节点:

区间类型
说明
电压穿越区间
A光标=跌落开始,B光标=跌落结束
无功电流响应区间
A光标=跌落开始,B光标=注入无功电流>参考值时刻
无功电流注入区间
无功电流从注入到稳定的全过程
有功功率恢复区间
A光标=有功功率跌落,B光标=有功功率恢复

光标拖动时,软件实时更新计算结果,显示当前值、最大值、最小值、Delta值及无功电流上升斜率。可输出的穿越分析结果包括:跌落保持时间、无功电流响应时间、无功电流注入持续时间、无功电流注入有效值、最大无功电流注入值、功率恢复时间。

3  数值显示

    判定阶段:

    内置标准模板,自动判标,减少人工遗漏

    将测试结果与标准阈值逐项对照,在连续穿越等参数较多的场景下容易出现遗漏。MTA_VRT软件内置多种行业标准模板,配置完成后自动输出各参数的判标结果,减少人工逐项核查的出错风险,各参数可按被测设备实际情况灵活调整。

    3  参数配置

    导出阶段:

    多格式导出,覆盖归档、回读与报告整理

    VRT测试通常涉及测试机构与设备厂商两端,双方所用分析工具不同,数据交接时常面临格式转换与兼容性问题。MTA_VRT软件支持工程文件、波形数据、光标测量结果及测试报告等多种格式导出,可直接满足数据归档、离线回读、多平台分析及报告整理等需求,无需二次转换:

    导出类型
    文件格式
    用途说明
    工程文件
    .mta
    保存配置+波形数据,离线回读
    波形数据
    .fld/.csv/.tdms/.mat
    支持ExcelLabVIEWMATLAB等多平台分析
    光标测量数据
    .csv
    光标区间内的测量结果
    测试报告
    .doc
    一键生成电压穿越测试报表

     完整VRT测试方案:PA系列功率分析仪 + MTA_VRT软件

    MTA_VRT软件与PA6000H / PA8000系列功率分析仪可构成完整的VRT测试方案,功率分析仪负责现场信号采集,软件负责后续的数据记录、分析计算与结果输出,覆盖测试启动到报告导出的各环节,无需额外数据中转。

    针对风电变流器测试中的电能质量分析需求,PA系列功率分析仪还支持IEC 61000-4-7谐波分析,可计算前50次谐波及2 kHz以下间谐波(覆盖标准核心测量段),满足GB/T 25387.2-2021中的相关测试要求。
    图4   PA系列功率分析仪IEC 61000-4-7测试
    此外,致远仪器还推出面向逆变器研发测试的InverterTest(光伏和储能逆变器测试软件)(点击查看),涵盖VRT测试、无功功率测试、电能指令测试等多项功能,可用于逆变器并网测试的多类场景需求。
    图5  InverterTest 测试项目

    如需了解光伏、风电、储能并网VRT测试方案,欢迎联系致远仪器技术支持获取咨询。6月3日-5日,致远仪器将亮相上海SNEC光伏展,届时可现场体验MTA_VRT软件操作,欢迎莅临交流。

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    1. CONNECT:[ UseTime:0.001039s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
    2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001381s ]
    3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000749s ]
    4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000698s ]
    5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001327s ]
    6. SELECT * FROM `set` [ RunTime:0.000608s ]
    7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001562s ]
    8. SELECT * FROM `article` WHERE `id` = 629897 LIMIT 1 [ RunTime:0.001191s ]
    9. UPDATE `article` SET `lasttime` = 1778971520 WHERE `id` = 629897 [ RunTime:0.009368s ]
    10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000688s ]
    11. SELECT * FROM `article` WHERE `id` < 629897 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001257s ]
    12. SELECT * FROM `article` WHERE `id` > 629897 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001177s ]
    13. SELECT * FROM `article` WHERE `id` < 629897 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001939s ]
    14. SELECT * FROM `article` WHERE `id` < 629897 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002140s ]
    15. SELECT * FROM `article` WHERE `id` < 629897 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002514s ]
    0.159408s