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AVT真空有载分接开关结构介绍


On-Load Tap-Changer

AVT

MR China Ltd. 苏州培训中心

开德贸易(上海)有限公司

MR 产品——VACUTAP? AVT

VACUTAP? AVT 真空有载分接开关 采用真空断流器作为切换元件,开关和电动 机构安装在同一机箱里,外部控制

单元采用 数字式自动电压调整器TAPCON?230C. 除了控制功能外,还具有过负载,过电压保 护和RS485串行接口。 VACUTAP? AVT are used a combination of 2 vacuum-interrupters and a load-free change-over switch for each phase to be switched,

Tap and MD were installed on one box. A digital voltage regulator TAPCON?230C is used as external control unit. In addition to the control function, the TAPCON? 230-C offers protection against overload and overvoltage. the AVR is equipped with a serial RS 485 interface for connection to a control system.

MR China Ltd

2010-5-25

Page 2

AVT III 11.5-150-9 真空有载分接开关
The AVT OLTC is used for regulating dry-type transformers AVT型有载分接开关使用在干式调压变压器上

MR China Ltd

Date: 2010-5-25

Page 3

AVT III 11.5-150-9 真空有载分接开关

MR China Ltd

Date: 2010-5-25

Page 4

VACUTAP? AVT 真空有载分接开关 Technical data

Number of phases 最大相数

3

Max. rated current per phase 每相最大额定电流
Rated step voltage 额定级电压

170 A
500 V

Highest voltage for equipment 设备最高电压
Operating positions工作位置数 Ambient Temperature 环境温度

11.5 kV
9 -20°C - +65°C

MR China Ltd

Date: 2010-5-25

Page 5

VACUTAP? AVT 真空有载分接开关 Technical data

Power 功率 Voltage
电压

0.25 kW 3ACN 220 / 380 V

Frequency 频率
Rated current 额定电流
MR China Ltd

50 Hz
1.55 /0.9 A

Date: 2010-5-25

Page 6

VACUTAP? AVT 真空有载分接开关 Technical standards

The above mentioned products are tested according to the following standards: 上述产品按下列标准测试

? IEC 60214-1:2004 ? GB 10230:1988

MR China Ltd

Date: 2010-5-25

Page 7

VACUTAP? AVT 真空有载分接开关 Switching Sequence

MR China Ltd

Date: 2010-5-25

Page 8

VACUTAP? AVT 真空有载分接开关 Switching Sequence
from tap position n to n+1从分接位置n切换到n+1
tap n
tap n+1

MTF IL MSV
MSV

TTV
MTF ca. 100 ms n n+1

TTV R

MR China Ltd

Date: 2010-5-25

Page 9

VACUTAP? AVT 真空有载分接开关 Switching Sequence
from tap position n to n+1从分接位置n切换到n+1
tap n
tap n+1

MTF IL MSV
MSV

TTV
MTF ca. 100 ms n n+1

TTV R

MR China Ltd

Date: 2010-5-25

Page 10

VACUTAP? AVT 真空有载分接开关 Switching Sequence
from tap position n to n+1从分接位置n切换到n+1
tap n
tap n+1

MTF

MSV
MSV

TTV
MTF ca. 100 ms n n+1

IL
R

TTV

MR China Ltd

Date: 2010-5-25

Page 11

VACUTAP? AVT 真空有载分接开关 Switching Sequence
from tap position n to n+1从分接位置n切换到n+1
tap n
tap n+1

MTF

MSV
MSV

TTV
MTF ca. 100 ms n n+1

IL
R

TTV

MR China Ltd

Date: 2010-5-25

Page 12

VACUTAP? AVT 真空有载分接开关 Switching Sequence
from tap position n to n+1从分接位置n切换到n+1
tap n
tap n+1

MTF IL MSV
MSV

IC
TTV
ca. 100 ms n n+1

TTV
MTF

R

MR China Ltd

Date: 2010-5-25

Page 13

VACUTAP? AVT 真空有载分接开关 Switching Sequence
operation finished 操作完成
tap n
tap n+1

MTF IL MSV
MSV

TTV
MTF ca. 100 ms n n+1

TTV R

MR China Ltd

Date: 2010-5-25

Page 14

VACUTAP? AVT 真空有载分接开关 Switching Sequence
from tap position n+1 to n 从分接位置n+1 切换到n
tap n
tap n+1

MTF IL MSV
MSV

TTV
MTF ca. 100 ms n n+1

TTV
R

MR China Ltd

Date: 2010-5-25

Page 15

VACUTAP? AVT 真空有载分接开关 Switching Sequence
from tap position n+1 to n从分接位置n+1切换到n
tap n
tap n+1

MTF IL MSV
MSV

IC
TTV
ca. 100 ms n n+1

TTV
MTF

R

MR China Ltd

Date: 2010-5-25

Page 16

VACUTAP? AVT 真空有载分接开关 Switching Sequence
from tap position n+1 to n从分接位置n+1切换到n
tap n
tap n+1

MTF

MSV
MSV

TTV
MTF ca. 100 ms n n+1

IL
R

TTV

MR China Ltd

Date: 2010-5-25

Page 17

VACUTAP? AVT 真空有载分接开关 Switching Sequence
from tap position n+1 to n从分接位置n+1切换到n
tap n
tap n+1

MTF

MSV
MSV

TTV
MTF ca. 100 ms n n+1

IL
R

TTV

MR China Ltd

Date: 2010-5-25

Page 18

VACUTAP? AVT 真空有载分接开关 Switching Sequence
from tap position n+1 to n从分接位置n+1切换到n
tap n
tap n+1

MTF IL MSV
MSV

TTV
MTF ca. 100 ms n n+1

TTV
R

MR China Ltd

Date: 2010-5-25

Page 19

VACUTAP? AVT 真空有载分接开关 structure and design设计和结构

MR China Ltd

Date: 2010-5-25

Page 20

VACUTAP? AVT 真空有载分接开关 structure and design设计和结构

Transfer Switch Name plate
铭牌 转换开关

Resistor
电阻

Drive unit
电动机构

Selector
选择器

MR China Ltd

Date: 2010-5-25

Page 21

VACUTAP? AVT 真空有载分接开关
structure and design设计和结构

电气组件 electrical components

Q1 motor protective switch

S3 raise/lower control switch
MR China Ltd

H1 green signal lamp
Date: 2010-5-25 Page 23

VACUTAP? AVT 真空有载分接开关
structure and design设计和结构

Control elements — Relays and contactors
控制元件— 继电器和接触器

K29 time delay relay 延时继电器
MR China Ltd

K1/ K2 / motor contactors 电机接触器

K13/ K14/ K20/ Auxiliary contactors 辅助接触器
Date: 2010-5-25 Page 24

VACUTAP? AVT 真空有载分接开关
structure and design设计和结构
energy accumulator 储能机构

Vacuum Interrupter
真空泡

Motor drive
电动机构

Selector Connections
选择器端子

Hand crank
手柄

Cable bushing
电缆套管
MR China Ltd Date: 2010-5-25 Page 25

VACUTAP? AVT 真空有载分接开关
structure and design设计和结构

transfer switch
转移开关
电弧监视系统F2 和转移开关在同一 高度,由弧光传感器监测电弧,一 旦监测到电弧触发变压器紧急跳闸, 绿色信号灯熄灭

Arc detector 弧光检测器

The arc monitor F2 in system is mounted at the same level as the transfer switches, and is used for detecting arcs with light sensor. Detection of arc triggers transformer emergency shutdown and the green signaling light goes out

MR China Ltd

Date: 2010-5-25

Page 26

VACUTAP? AVT 真空有载分接开关
structure and design设计和结构
energy accumulator 储能机构
卡栓监视S70/71 用于通过位置传感器 探测储能机构卡栓未能卡住,卡栓监 视系统动作驱动变压器跳闸,绿色信 号灯熄灭。

Latch monitor 闭锁监控
MR China Ltd

The latch monitoring system S70/71 is used for detecting. via sensor non-latching of the energy accumulator. Activation of the latch monitoring system triggers transformer shutdown and the green signaling light goes out

Date: 2010-5-25

Page 27

VACUTAP? AVT 真空有载分接开关
structure and design设计和结构

Motor drive 电动结构

Hand crank Cover 手柄盖 Angle indicator
转角指示器

Pointer
标尺

Hand crank
手柄

Bevel gear 伞齿轮
MR China Ltd Date: 2010-5-25 Page 28

VACUTAP? AVT 真空有载分接开关
structure and design设计和结构

Tap selector step-by-step gear 逐级机构
MR China Ltd

Tap selector 切换选择器

Selector terminals 选择器端子
Date: 2010-5-25 Page 29

VACUTAP? AVT 真空有载分接开关 Connection diagram

MR China Ltd

Date: 2010-5-25

Page 30

VACUTAP? AVT 真空有载分接开关
Connection diagram

CONNECTION DIAGRAM AVT接线图
Transition Resistor
过渡电阻

TTV

Transition Contact of Vacuum Interrupter in Transition Path
过渡支路真空泡(过渡触头)

R

MSV T

Main Switching Contact of Vacuum Interrupter in Main Path
主支路真空泡(主通断触头)

Transfer Switch 转换开关 TS2 Tap Selector 2
分接选择器2

TS1 Tap Selector 1
分接选择器1

MR China Ltd

Date: 2010-5-25

Page 31

VACUTAP? AVT 真空有载分接开关
Connection terminal

Tap changer connection分接开关端子

MR China Ltd

Date: 2010-5-25

Page 32

VACUTAP? AVT 真空有载分接开关
Connection terminal

Terminal support 端子排

MR China Ltd

Date: 2010-5-25

Page 35

VACUTAP? AVT 真空有载分接开关
TAPCON ? 230 C 型电压自动调整器

TAPCON ? 230 C 型电压自动调整器
3 different voltage levels

time delay either linear or integral
over voltage detection under voltage and over current blocking tap position indication via 4...20mA parallel operation up to 8 transformers Parameterisation software with comfortable bi-directional functionalities

Norm Set normal setting of regulating parameters with self-learning algorithm

MR China Ltd

Date: 2010-5-25

Page 36

VACUTAP? AVT 真空有载分接开关
TAPCON ? 230 C 型电压自动调整器

TAPCON ? 230 C 型电压自动调整器
三个不同的电压水平 任意线性或积分延时 过电压监控 欠电压和过电流闭锁 4...20mA 切换位置显示 8台变压器并联运行
Parameterisation software with comfortable bi-directional functionalities

正确设置 自诊断运算程序正确设置控制参数
MR China Ltd Date: 2010-5-25 Page 37

VACUTAP? AVT 真空有载分接开关
TAPCON ? 230 C 型电压自动调整器

Definite operation of the OLTC 操动有载开关

REGULATED TRANSFORMER 调压变压器 Change of voltage ratio 改变变比
Actual Voltage 实际电压

MOTORDRIVE 电动机构
Raise / Lower signal 升/降信号

LOADPROFILE 负载图 change of power demand 改变电能需求 Required Voltage 设定电压 TAPCON? Voltage Regulation 电压调整器
Regulating circuit

Network
Date: 2010-5-25 Page 38

China Marketing

VACUTAP? AVT 真空有载分接开关
TAPCON ? 230 C 型电压自动调整器

TAPCON? located in control room

SCADA System 系 统

安装在主控室 RS 485

Control cable 10x1,5mm? 控制电缆

AVT on site

安装在变电站
China Marketing Date: 2010-5-25 Page 39

AVT型开关检修 Maintenance of type AVT
? 请注意:本展示只是开关检修程序的介绍, 而不是正式的有载开关培训
The presentation has to be understood as a guideline for the maintenance procedure and cannot replace a tap changer training.

? 在检修前必须做好充足的准备
The necessary preparations must have been made prior to the start of the maintenance

? 如有任何问题请登陆我们的网站: www.mr-china.cn 或发传真 到: 021-61634581 寻求帮助
For specific information please refer to www.mr-china.cn or fax to 021-61634581

MR China Ltd

Date: 2010-5-25

Page 43

AVT型开关检修 Maintenance of type AVT
?
1.

检修周期 / Inspection interval
第一次检修:运行 2年或每操作100,000次后(取其先到者)
The first inspection must be performed after 100,000 switching operations or after 2 years of service respectively, which comes first.

2.

以后的检修每6年或每操作100,000次后(取其先到者)
Further inspections are required every 6 years of service respectively or after 100,000 switching operations, which comes first.

?

检修时间 / Inspection time
如果组织和准备良好,合格的和经MR培训的人员通常一天内便可 完成检修。
The inspection can be carried out by qualified or MR-trained personal usually within one day, provided by well prepared and organized.

MR China Ltd

Date: 2010-5-25

Page 44

AVT型开关检修 Maintenance of type AVT
?
1.

安全措施 / Security precautions
变压器一定要从网络切除并确保不再合闸.所有套管端子一定要醒目接 地.(使用接地线或接地开关)
The transformer must be switched off,isolated and secured against reclosing。All terminals must be grounded visibly (by means of ground cable or ground switch)

2.

一定要明确地表示出作业区域。
The work area should be marked clearly.

3.

这些安全措施未落实之前,不得开始检修工作.
Start inspection only after all these precaution have been carried out.

MR China Ltd

Date: 2010-5-25

Page 45

AVT型开关检修 Maintenance of type AVT
?
1.

检修内容 / Maintenance
检查开关安装固定情况。 Check the fixation of the AVT.

2.

擦拭干净润滑点和绝缘部件,
检查所有触头和运动部件。 Clean the lubricate point and insulate part, check all the contact point

and movable part.
3. 关键螺丝的紧固检查。 Check the fixation of the key screws. 4. 用手摇把操作开关进行机械检查。 Operate the AVT by hand crane to check the mechanism.

MR China Ltd

Date: 2010-5-25

Page 46

AVT型开关检修 Maintenance of type AVT
?
5.

检修内容 / Maintenance
测量过渡电阻值。 Measure the transmitter resistance

6.

检查S70和S71位置传感器间距。 Check the distance between position sensor S70 and S71.

7

检查时间继电器K29和保护开关Q1的设置参数。
Check the setting parameter of time relay and protection MCB Q1.

8.

检查手动操作手柄的连锁开关。 Check the interlock of hand crane.

MR China Ltd

Date: 2010-5-25

Page 47

AVT型开关检修 Maintenance of type AVT
?
9.

检修内容 / Maintenance
逐级动作的检查。

Check step by step operation.

10

运行保护试验。 Commissioning protection test.

11

相序保护检测 Check the phase protection relay.

12

弧光监视器性能检测。 Check the arc detector.

Arc detector 弧光检测器
MR China Ltd Date: 2010-5-25 Page 48

AVT型开关检修 Maintenance of type AVT
? 检修内容 / Maintenance
Restart test.

Voltage regulator 电压调整器

13. 重新启动试验。

14 棘爪监控测试。

Divert switch supervisor test.

15 终端限位测试。 Check the limit switch of final position.

16 电压调整器230C 的功能检查。 Check the function of voltage regulator TAPCON 230C.

MR China Ltd

Date: 2010-5-25

Page 49

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