1、Automation and DrivessLow VoltageControls & D for Power Distribution1SENTRON 3WL / ETU / 201105122011 ESP TrainingAutomation and DrivesShen Jianlin SEAL CS3WL ETU IntroductionAutomation and DrivessLow VoltageControls & D for Power Distribution2SENTRON 3WL / ETU / 20110512主触头电流互感器电流互感器 机构连杆联动分励线圈电子脱扣
2、单元电子脱扣单元脱扣螺线管脱扣螺线管 合闸线圈欠压线圈SENTRON 3WL脱扣单元主要元件脱扣单元主要元件Automation and DrivessLow VoltageControls & D for Power Distribution3SENTRON 3WL / ETU / 20110512SENTRON 3WL电子过电流脱扣电子过电流脱扣过载保护标准 I2t短路短延时保护标准 tsd短路瞬时保护接地保护标准tIRIsdIitgIgtsdtRLSIG电流 (A)分断时间 (s)可选可选 I4t可选可选I2t可选可选 I2t L =长延时反时限脱扣长延时反时限脱扣 S =短路短延时短路
3、短延时 I = 短路瞬时脱扣短路瞬时脱扣 G =接地保护接地保护 Automation and DrivessLow VoltageControls & D for Power Distribution4SENTRON 3WL / ETU / 20110512SENTRON 3WL脱扣脱扣 选择标准选择标准1. 哪个保护功能是需要的？哪个保护功能是需要的？ L长延时过载保护(a) S短路短延时保护(z) I短路瞬时保护(n) N中性线保护(N) G 接地保护(g)2. 用户怎样更喜欢来更改设置用户怎样更喜欢来更改设置 ? 旋转开关 - 额定电流的百分比 软件更改 ; 屏幕显示相应的值 通过以下
4、装置远控 : CubicleBUS 使用 BDA 或者 COM15 模块Automation and DrivessLow VoltageControls & D for Power Distribution5SENTRON 3WL / ETU / 201105124. 需要哪一层级的通讯需求需要哪一层级的通讯需求 ? 不需要 外部模块和 CubicalBUS Profibus DP3. 希望什么样的显示希望什么样的显示 ? 不希望 4行液晶显示 大屏幕液晶显示5. 需要哪些测量参数需要哪些测量参数 ? 不需要 U, I , W, P, f, cos U, I , W, P, f, cos,
5、Harmonics, Distortion THDSENTRON 3WL脱扣脱扣 选择标准选择标准Automation and DrivessLow VoltageControls & D for Power Distribution6SENTRON 3WL / ETU / 20110512脱扣复位按钮四行液晶显示器; 15倾斜 或者空白面盖 可换电流模块,250A 至 6300A.互地保护模块或者空白面盖 ZSI模块Profibus DP 通讯模块测量单元脱扣信号开关脱扣螺线管 BDA 链接口/测试口SENTRON 3WL脱扣单元组成脱扣单元组成Automation and DrivessL
6、ow VoltageControls & D for Power Distribution7SENTRON 3WL / ETU / 20110512SENTRON 3WL 脱扣单元脱扣单元种类保护功能输入-就地或远控缺相保护接地错误保护显示I4t 保护曲线备用参数设置区域选择连锁通讯测量功能电源和能量值电源质量谐波测量波形分析ETU25BL-S-ILsETU27BL-S-I-G-NLssETU15BL-ILs= 标准标准o= 可选可选 Automation and DrivessLow VoltageControls & D for Power Distribution8SENTRON 3WL
7、 / ETU / 20110512SENTRON 3WL Trip Units (communication as an option)s= 标准标准o=可选可选ETU55BL-S-I-G-NRsossoooooooETU76BL-S-I-G-NL&RsograficssoooooooETU45BL-S-I-G-NLsoosooooooo种类保护功能输入-就地或远控缺相保护接地错误保护显示I4t 保护曲线备用参数设置区域选择连锁通讯测量功能电源和能量值电源质量谐波测量波形分析Automation and DrivessLow VoltageControls & D for Power Dist
8、ribution9SENTRON 3WL / ETU / 20110512SENTRON 3WL接地保护模块改装接地保护模块改装s= 标准标准 报警报警 /脱扣脱扣ssssss报警报警ssssss 功能S I GF 计算矢量和 g GF 直接测量LED 状态指示可调延时 延时时间可选 I2t曲线3WL9111-0AT54-0AA03WL9111-0AT56-0AA03WL9111-0AT51-0AA03WL9111-0AT53-0AA0For ETU45B就地参数For ETU76B就地或远控参数电流互感器电流互感器 1200 A / 1A eg. 4NC33Automation and Dr
9、ivessLow VoltageControls & D for Power Distribution10SENTRON 3WL / ETU / 20110512SENTRON 3WL 额定电流模块额定电流模块什么是额定电流模块什么是额定电流模块 ?额定电流模块是用于断路器额定电流模块是用于断路器In可更换的插件可更换的插件它能在设备启用过程中快速调整电流以匹配不同的负载和条件这一功能类似于更换断路器电流互感器Automation and DrivessLow VoltageControls & D for Power Distribution11SENTRON 3WL / ETU / 201
10、10512要求:部分运行负载 (1期完成) IR= 1280A以前解决方案;更换电流互感器: 耗时 系统长时间停用 高费用进线断路器 Inmax=5000A IR= 5000A * 0,4 = 2000A不适用不适用 !额定插件额定插件: 部分运行负载的保护调整部分运行负载的保护调整 1期2期Automation and DrivessLow VoltageControls & D for Power Distribution12SENTRON 3WL / ETU / 20110512过程 ! 额定插件: 短时设定时间 节省成本 非常短的设备停用时间IR= 1600A * 0,8 = 1280
11、A OK !部分运行负载部分运行负载 IR 1600A 额定插件额定插件: IR = 1600A * 0,8 = 1280A进线断路器 Inmax=5000A 额定插件额定插件: 部分运行负载的保护调整部分运行负载的保护调整1期2期要求:部分运行负载 (1期完成IR= 1280AAutomation and DrivessLow VoltageControls & D for Power Distribution13SENTRON 3WL / ETU / 20110512无与伦比无与伦比 !1期+2期完成后: IR= 5000A * 0,9 = 4500A 系统完成: 5000A 额定插件进线
12、断路器 Inmax=5000A 额定插件额定插件: 部分运行负载的保护调整部分运行负载的保护调整1期2期Automation and DrivessLow VoltageControls & D for Power Distribution14SENTRON 3WL / ETU / 20110512SENTRON 3WL 额定插件额定插件除外: ETU15B 没有额定插件Automation and DrivessLow VoltageControls & D for Power Distribution15SENTRON 3WL / ETU / 20110512SENTRON 3WL带带Ro
13、gowski-线圈的电流互感器线圈的电流互感器SENTRON 3WL电流互感器组成a) 能量转换/供应b) Rogowski-线圈 Rogowski-coil 是一种空气线圈 *不饱和 (与铁心 CT比较)* 提供准确的电流信号*精确度 1% 精于测量任务 一种框架匹配一种电流互感器获益 :基于电流互感器与额定插件技术不需要更换电流互感器Automation and DrivessLow VoltageControls & D for Power Distribution16SENTRON 3WL / ETU / 20110512Current Measuring Rogowski CoilW
14、hat is a Rogowski Coil?It is not actually a current transformer, but a current transducer.It utilizes an “air cooled” coil which is placed around a conductorto accurately measure current. It has been selected to replace traditional CTs for the new 3WL because of its ability to provide superior prote
15、ction.How does the Rogowski Coil provide superior protection?One of the most important benefits of the Rogowski Coil is in its linearity. The traditional CT design has a inherent saturation property, which causes the measurement at the high end of the spectrum to be out of calibration. The Rogowski
16、Coil contains no saturable components. It is able to provide more accurate information to the trip unit, which in turn improves protection.Automation and DrivessLow VoltageControls & D for Power Distribution17SENTRON 3WL / ETU / 20110512Current Measuring Rogowski CoilHow is it measured?The vout is e
17、qual to the dI/dt times the mutual inductance of the coil. This signal is then integrated electronically, so the voltage accurately represents the current waveform.Automation and DrivessLow VoltageControls & D for Power Distribution18SENTRON 3WL / ETU / 20110512 Saturation / Sttigung00,20,40,60,811,
18、21,41,601234567891011121314151617H A/cm B TH1B1H2B2Saturation of Iron CoilsAutomation and DrivessLow VoltageControls & D for Power Distribution19SENTRON 3WL / ETU / 20110512SENTRON 3WL带带Rogowski-线圈的电流互感器线圈的电流互感器 I激活保护系统的界限电流激活保护系统的界限电流: 框架 Size I + II : 80 A (1相 !) 框架 Size III : 200 ALCD 电流显示电流显示:介于
19、0 - 50 A 初始电流: 显示 20 x In / 最大. 50kA Automation and DrivessLow VoltageControls & D for Power Distribution22SENTRON 3WL / ETU / 20110512SENTRON 3WL种类种类 ETU27BLSING 保护 :MLFB: 3WL - DG - L : IR = In x 0,4 - 1 S : Isd = In x 1,25 - 12tsd = 0-20M-100-200-300-400 ms I : 固定 Ii 20 x In / 最大. 50kA N : IN = O
20、FF / 1,0 x In G : IG = Off-A-B-C-D-E 通过矢量和计算: - 框架 size I and II: 100 A - 1200 A - 框架 size III:400 A - 1200 A BG I und BG IIBG IIIA100 A400 AB300 A600 AC600 A800 AD900 A1000 AE1200 A1200 A 由于额定插件 In 是灵活的 缺相灵敏性 ETU 自检 通过LED灯显示脱扣原因Automation and DrivessLow VoltageControls & D for Power Distribution23S
21、ENTRON 3WL / ETU / 20110512SENTRON 3WL种类种类 ETU45BLSIN(G) - 保护 : L : IR = In x 0,4 - 1I2t 或旋钮开关选或旋钮开关选 I4t S : Isd = In x 1,25 - 12tsd = 20 M-100-200-300-400-关关 ms 旋钮开关可选旋钮开关可选 I2t I : Ii = In x 1,25 - 12- 最大最大 (0.8 x Ics )-关关 N : IN = In x 0,5 / In x 1 / 关MLFB: 3WL - - EBEGFBFG(G): 可变化可变化 ( EB and F
22、B) IG = 关-A-B-C-D-EBG I und BG IIBG IIIA100 A400 AB300 A600 AC600 A800 AD900 A1000 AE1200 A1200 AAutomation and DrivessLow VoltageControls & D for Power Distribution24SENTRON 3WL / ETU / 20110512-ZF22III-ZF21II I-Z“ 增加用于尺寸-ZF20ISENTRON 3WL中性线保护中性线保护Automation and DrivessLow VoltageControls & D for P
23、ower Distribution25SENTRON 3WL / ETU / 20110512SENTRON 3WL接地保护接地保护1. 检测三相电流和中性线电流用于矢量和L1L2L3NPE3WL13poleT52. 外部电流互感器直接测量接地电流T6: 接地互感器接地互感器1200 A / 1 A e.g. 4NC33L1L2L3NPET63WL13poleT5T5: 中性线互感器中性线互感器 3WL9111-0AA21-0AA0 FS I3WL9111-0AA22-0AA0 FS II 3WL9111-0AA23-0AA0 FS III Air 线圈输出 200 mV 1 kAAutoma
24、tion and DrivessLow VoltageControls & D for Power Distribution26SENTRON 3WL / ETU / 20110512SENTRON 3WL种类种类 ETU45BIn 由于额定插件灵活调整 在 tsd= 0.02 s相灵敏度保护 热记忆中断 脱扣与不脱扣自检功能 LED显示脱扣故障原因 CubicleBUS 可选模块: ZSI, 输入输出 改制可选: 测量功能,增强型测量功能,通讯 可选接地保护 显示可选 (bei FB and FG), 180旋转, 倾斜15 报警可调更多ETU45B 特性 : Automation and
25、DrivessLow VoltageControls & D for Power Distribution27SENTRON 3WL / ETU / 20110512SENTRON 3WL种类种类 ETU76BLSIN(G) - Protection :MLFB: 3WL - J - BG L : IR = In x 0,4 - 1 / OFFI2t 或旋钮开关至或旋钮开关至 I4t S : Isd = 1.25 x In - 0.8 x Icw tsd = 20 ms M, 80-4000 ms / OFF I2t保护曲线可选保护曲线可选 I :Ii = In x 1,5 - 0,8 x I
26、cs / 关N : IN = 0.2 x In - 2.0 x In / OFF ( 1 带外部 N-CT) (G): 改制改制 ( EB und FB) IG = 关-A-B-C-D-EBG I und BG IIBG IIIA100 A400 AB300 A600 AC600 A800 AD900 A1000 AE1200 A1200 AETU76BAutomation and DrivessLow VoltageControls & D for Power Distribution28SENTRON 3WL / ETU / 20110512SENTRON 3WL种类种类 ETU76B更多
27、 ETU76B 特性: 两种单独保护参数设置200ms内实现市电运行与发电运行选择GSENTRON WL参数设置参数设置 A & B 没有旋钮开关参数通过通讯设置 (COM15 or BDA/ BDAplus) CubicleBUS 标准大屏幕显示 (内容与图表) 休眠模式显示 测量功能与简单波形显示结合 读取与更改参数菜单帮助 DC 24 V 辅助电源用于显示Automation and DrivessLow VoltageControls & D for Power Distribution29SENTRON 3WL / ETU / 20110512+ large illuminated
28、display as astandard (text and graphics)+ display illumination with Sleep Mode“+ in combination with metering- functionPLUS quick and easywave-form display+ easy, menue-assisted reading and changing of parameters+ DC 24 V auxilliary supplyrequired because the displaySENTRON 3WLType ETU76BMLFB: 3WL -
29、 N - BGETU55B=ETU76BAutomation and DrivessLow VoltageControls & D for Power Distribution30SENTRON 3WL / ETU / 20110512SENTRON 3WL接地模块接地模块 GFM AT 45B见断路器 SENTRON WL 操作介绍, 9-72页外部外部C.T.直接测量直接测量矢量和矢量和Automation and DrivessLow VoltageControls & D for Power Distribution31SENTRON 3WL / ETU / 20110512外部传感器
30、接线外部传感器接线, CubicleBUS, 通讯通讯 和测量功能和测量功能VT电压互感器G-CT电流互感器N-CT外部中性线互感器Automation and DrivessLow VoltageControls & D for Power Distribution32SENTRON 3WL / ETU / 20110512Voltage TransformerWhat is a voltage transformer?A voltage transformer (VT), also referred to as a potential transformer (PT), utilizes
31、a high primary voltage winding which induces a lower voltage secondary winding at a desired ratio. This secondary circuit is then used as an accurate measurement of the difference in potential. When do you need a voltage transformer?For the 3WL to provide metering, power and energy functions, power
32、quality, harmonics and waveform functions. This can be accomplished with an ETU45-ETU76, either the optional metering or metering plus module and voltage transformers. The voltage transformers are sold separately. Automation and DrivessLow VoltageControls & D for Power Distribution33SENTRON 3WL / ET
33、U / 20110512电压互感器电压互感器在我们的目录中,客户很容易选择所需型号的互感器. 如果客户系统所需的二次电压是100V,最小精度是0.5%的,那客户就很容易做选型.3WL9111-0BB71-0AA03WL9111-0BB73-0AA03WL9111-0BB74-0AA03WL9111-0BB76-0AA0Vpri 230380 - 440500 - 690910 - 1000Vsec100100100100Class0.50.50.50.5Automation and DrivessLow VoltageControls & D for Power Distribution34S
34、ENTRON 3WL / ETU / 20110512 内部自检 脱扣 不脱扣ETU的检测的检测 手持式测试仪 3WL9111-0AT31-0AA0 检查电流互感器连接 检查保护功能 Automation and DrivessLow VoltageControls & D for Power Distribution35SENTRON 3WL / ETU / 20110512内部自检内部自检ETU25B开始具备功能 要求:ETU 激活, ACTIVE-LED灯闪烁- 通过 SENTRON WL互感器电流 框架 size I + II 80 A 框架 size III200 A- 辅助电源 DC 24 VAutomation and DrivessLow VoltageControls & D for Power Distribution36SENTRON 3WL / ETU / 20110512 不脱扣 脱扣 CLEAR“停止内部自检内部自检Automation and DrivessLow VoltageControls & D for Power Distribution37SENTRON 3WL / ETU / 20110512Thanks for your attendance
