Digital OnOn-load load Tap Tap-Changer Changer Voltage Controller TAPCON® 250 Reinhausen Manufacturing Inc. Humboldt TN USA Humboldt, Contents • History of MR Automatic Voltage Regulation • Foundation of Today’s TAPCON® series • The latest TAPCON® Technology TAPCON® 250 • Control Methods for Transformers p incl. samples August 2009 Page 2 History Generations up to TAPCON® 230 MK 10 MK 20 MK 30 1972 1982 1988 VC 100 TAPCON®230 1997 2002 August 2009 Page 3 History Generations up to TAPCON® 240 TAPCON® 240 2002 VC 100E 1998 MK 30E 1988 MK 20E 1983 August 2009 Page 4 . TAPCON® Technology Voltage Control TAPCON® 240 Voltage Control TAPCON® 230 August 2009 Page 5 . Technology TAPCON® 250 • The TAPCON® specifically for US end-users • Interchangeable into today’s specific schemes • Size allows easy retrofit solutions l ti August 2009 Page 6 .TAPCON® 250 The Latest TAPCON® . TAPCON® 250 Latest Technology Features • Informative 128x128 dot graphic display • LED’s and contacts for status and conditions • simple and clear menus to navigate • NORMSET for easy parameterization • TAPCON®-trol System Visualization Software August 2009 Page 7 . Follower Master F ll • Four different levels for voltage regulation August 2009 Page 8 .TAPCON® 250 Latest Technology Features • Line Drop Compensation by R and X compensation Z compensation ti • Several Paralleling Methods in one device without additional hardware circulating current M t . TAPCON® 250 Latest Technology Features • Reverse Power Operation • Operations Counter • Tap Position Knowledge by current loop method • Tap T Position P iti Limits Li it • Tap Position Record August 2009 Page 9 . Auto Tapchange Inhibit.2 A y Four Programmable Command Inputs Settable for Alternate Voltage Levels 2. 3. or 4. Master/Follower. Parallel Group 1 or 2. or Remote Voltage Level Activation Auto/Manual and Remote/Local Activation Inputs Operation Count Input August 2009 Page 10 . Quicktap.TAPCON® 250 Latest Technology Inputs y Voltage Input Measuring Potential Transformer 120VAC auxiliary Power Supply 12V DC y Current Input 0. TAPCON® 250 Latest Technology Outputs • Isolated Form C Contacts Showing Modes or Status MANUAL/AUTO User programmable alarms Status Alarm.. • Tap Position (analog) August 2009 Page 11 .. TAPCON® 250 Latest Technology Analog Interface • Direct tap position knowledge • Choice of tap position input: 0 … 1 mA 0 … 20 mA 4 … 20 mA A potentiometer • Choice of tap p position p output: p 0 … 1 mA 4 … 20 mA Analog g Interface ( AI ) August 2009 Page 12 . RS485.104 Communications Interface ( CI ) August 2009 Page 13 .0 MODBUS ASCII & RTU on demand: e. IEC60870 –103.g.TAPCON® 250 Latest Technology Communications • Choice of communication ports: RS232 RS485 RS232. fiber optical RJ45 (modem or Ethernet) • Choice of communication protocols : DNP3. TAPCON® 250 Latest Technology TAPCON® 250 • MR has placed the TAPCON® series technology gy into this versatile package • The adaptability to retrofit into existing installations with the leading edge technology August 2009 Page 14 . TAPCON® 250 Control Methods for Transformers • Overview of different Control Schemes • Circulating Current Analog Paralleling • Circulating Current Digital Paralleling August 2009 Page 15 . 10 Digital Paralleling via CAN bus August 2009 Page 16 . to ANSI C57.12.TAPCON® 250 Configurations Single Installation XPA I XPA I Analog Paralleling acc. TAPCON® 250 Configurations Single Installation Retrofit with Adapter Panel TAPCON® 250-67 • Standard installation for stand alone power transformers with ith on-load l d tap-changer t h • Features Tap Position Detection Communications Adaptation to existing installations Four Programmable Inputs Visualization via TAPCON®trol System Installation in the motor drive MD II (included) August 2009 Page 17 . ANSI C57. Beckwith M 2001 ANSI-scheme CAN-bus August 2009 Page 18 .TAPCON® 250 (or other TAPCON® s) Together with existing installations Parallel Balancing Modules TAPCON® 250 -- e.10 scheme Within the TAPCON®.12.g.TAPCON® 250 Circulating Current Analog Paralleling Parallel Control acc.family Parallel Assistant Modules TAPCON® 250 -. TAPCON® 250 Circulating Current Analog Paralleling Requirements •Similar (practically identical Z% •Solid high-side bus (no separate sources) •Comparable step voltages and ranges (but some differences may be tolerable) •Provisions for LDC •Same winding ratios •Same MVA rating (ratio correcting CTs may be used) August 2009 Page 19 . TAPCON® 250 Circulating Current Analog Paralleling AC Current Relay Paralleling g Assistant XPA I OLTC Control TAPCON® 250 (incl. AC Relay) CAN bus August 2009 Page 20 . TAPCON® 250 Circulating Current Analog Paralleling Paralleling Assistant XPA-I • Easy adaption for paralleling via • CAN bus to Digital Voltage • Controllers of the TAPCON® family • Simplified installations less wiring time and reduced failures • Cost savings CAN bus Analog August 2009 Page 21 . TAPCON® 250 TAPCON® 250 Circulating Current Analog Paralleling August 2009 Page 22 . Follower o o e • simplified commissioning • remarkable saving g of costs TAPCON® 240 / 260 August 2009 Page 23 .TAPCON® 250 Digital Paralleling Parallel Control with CAN bus Digital Paralleling with TAPCON® 250 includes: TAPCON® 250 • easy parallel operation of up to 16 transformers • Group Paralleling TAPCON® 250 TAPCON® 230 • several paralleling methods Circulating Current Master aste . TAPCON® 250 Digital Paralleling AC Current Relay Parallel Balancing Module OLTC Voltage Control August 2009 Page 24 . TAPCON® 250 Digital Paralleling LINE Transf. 1 Transf. 2 AC PBM 3 ACT 5 PT 90 Relay wPlate 1 3 1 PBM 52-2a 24a 7 3 1 7 8 6 6 5 4 24b 2 4 52-1 10 10 24a 4 24 1 3 PT 6 2 4 2 52-2 CAN Bus LOAD 90 Relay wPlate 5 9 9 ACT 5 52-1b 52 1b 24b 52 52-2b 2b 8 6 2 AC 52-1a LOAD August 2009 Page 25 . TAPCON® 250 Circulating REACTIVE Current Digital Paralleling Versus Analog Scheme Analog Limitations Digital Comparison •CT circuitry wired between transformers •No CT circuitry between transformers •Similar (practically identical) Z% •Z% can be different •Solid Solid high-side high side bus •Separated Separated high-side high side bus okay •Comparable step voltages and ranges •Different step voltages and tap ranges are okay •Provisions for LDC •LDC doesn’t require adjustment •Same winding ratios •Different winding ratios okay •Same S MVA rating (ratio ( correcting CTs may be used) •Different ff MVA ratings okay (CT (C is sized according to rating) •No visual indication of correct settings •Controller g guided commissioning g August 2009 Page 26 . 1 PBM 52-2a 8 6 2 AC AC LOAD Traditional Analogue Scheme 52-1 LOAD 24 LOAD Only one 52-2 controller needs indication for two paralleled transformers TAPCON® 250 with CAN bus August 2009 Page 27 . the Difference in Paralleling ! LINE LINE Transf.. 2 TAPCON 90 Relay TAPCON 90 Relay 6 5 6 5 Transf. 2 PBM 3 ACT 5 PT 90 Relay w Plate 1 3 52-1a 1 24a 7 3 1 7 8 6 4 90 Relay wPlate 5 9 24b 10 10 2 2 24a ACT 4 1 3 PT PT 6 4 52-1 24 5 +12VDC +12VDC 1 2 1 2 43P 24a Tap Position Input Option PT Tap Position Input Option 2 52-2 LOAD 6 CAN-Bus 5 52-1b 24b 52-2b 9 4 Transf.TAPCON® 250 Digital Paralleling TAPCON® 250 . 1 Transf.. •Same Z% •Same Vector Groups •Same # of Taps •Same step voltage August 2009 Page 28 .TAPCON® 250 Digital Master-Follower Scheme Overview •Older analog methods required relay logic •Master-Follower actually the most common method used in rest of world •Only the master regulates •All All controllers t ll need d positive iti position iti kknowledge l d •Perfect and actually preferred for applications where each transformer naturally carries the load evenly on the same tap position. ..TAPCON® 250 Digital Paralleling fewer components . fewer problems.. ``` more reliability .. less work. more cost savings .. more benefits .. TAPCON® 250 August 2009 Page 29 . ... tapcon250.www.com March 2007 Page 30 .