RƠLE BẢO VỆ SO LỆCH 7UT51
B. TRÌNH TỰ THÍ NGHIỆM RƠLE SO LỆCH 7UT513 V3.x
IV. CÁC CHỨC NĂNG BẢO VỆ
6. Chức năng bảo vệ chạm vỏ thùng: (Chức năng này chỉ có ở Rơle 7UT513)
6.1 Cài đặt chức năng và thông số bảo vệ:
- DA – 7827 – E
7827 – NON EXIT.
SENSITIVE CT B INSENSITIVE CT A - DA – 2701 – E
2701 - ON
Block trip relay
- Vào các địa chỉ 2703 đến 2727 cài đặt các thông số bảo vệ.
Sơ đồ bảo vệ rò rỉ ra thùng MBA 6.2 Thí nghiệm chức năng bảo vệ chạm vỏ thùng:
Bơm dòng tăng từ từ đến khi rơle tác động theo dõi led chỉ thị, rơle đầu ra, bảng ghi sự cố.
Lưu ý : Để tránh nhầm lẫn với các chức năng khác, khi thí nghiệm chức năng này, ta nên khoá các chức năng bảo vệ khác.
Truy cập thông tin sự cố:
Để truy câ ̣p các thông tin cảnh báo làm viê ̣c của Rơle người vận hành dùng các phı́m
hoă ̣c dùng các phı́m DA 5100 E để truy câ ̣p vào đi ̣a chỉ. Sau đó dùng các phím ↓↑ chạy dọc bản tin xem các sự kiện bản tin.
Để truy cập thông tin sự cố người vận hành cần dùng các phím để đến địa chỉ 5200 hoặc dùng phím DA 5200 E đến trực tiếp. Sau đó dùng các phím ↓↑ chạy dọc bản tin xem các sự kiện bản tin.
Để truy cập thông tin sự cố trước đó người vận hành cần dùng các phím để đến địa chỉ 5300, 5400 hoặc dùng phím DA 5300, 5400 E đến trực tiếp. Sau đó dùng các phím ↓↑ chạy dọc bản tin xem các sự kiện bản tin.
Dưới đây trình bày bản tin sự cố mới nhất.
Truy cập chức năng Đo lường:
Để truy cập thông tin các giá trị của các Đại lượng Đo lường người vận hành cần dùng các phím để đến địa chỉ 5700, 5900 hoặc dùng phím DA 5700(5900) E đến trực tiếp. Sau đó dùng các phím ↓↑ chạy dọc bản tin xem các giá trị.
Phụ lục : Các thông số chỉnh định rơle:
User: ETC3
Substation: 092 Hoi An Feeder: 001 F87T
Protection device: 001 7UT513 V3.0x 7UT513******1B**
Configuration
7100 INTEGRATED OPERATION
7101 Language German 7102 Date format dd.mm.yyyy
7105 Operational message for 1st display line 0741 Operat. meas. current L1 side 1 [A] is
7106 Operational message for 2nd display line 0744 Operat. meas. current L1 side 2 [A] is
7107 Fault message for 1st display line 0543 Prot.funct.which has picked up
7108 Fault message for 2nd display line 0544 Prot. funct. which has tripped
7110 Fault indication: LED and LCD With fault detection
7200 PC AND SYSTEM INTERFACES
7209 Device type 35 7211 Data format for PC-interface DIGSI V3 7215 Transmission baud rate for PC-interface 9600 Baud 7216 Parity and stop-bits for PC-interface DIGSI V3
7221 Data format for system-interface VDEW compatible 7222 Measurement format for system-interface VDEW compatible 7225 Transmission baud rate for system-interface 9600 Baud
7226 Parity and stop-bits for system-interface VDEW/DIGSI V3/LSA 7235 Parameterizing via system-interface no
7400 FAULT RECORDINGS
7402 Initiation of data storage Storage by fault det 7410 Maximum time period of a fault recording 1.00 s
7411 Pre-trigger time for fault recording 0.10 s 7412 Post-fault time for fault recording 0.10 s 7431 Storage time by initiation via binary input 0.50 s 7432 Storage time by initiation via keyboard 0.50 s
7490 Length of fault record (former LSA) 660 values fix
7800 SCOPE OF FUNCTIONS
7801 Selection of the protected object 3winding-transformer 7806 Selection of star point transformer A No assignment
7807 Selection of star point transformer B No assignment 7816 Differential protection Existent 7819 Restricted earth fault protection Winding 1
7821 Back-up overcurrent protection Reference side 1 7824 Thermal overload protection 1 Reference side 1 7825 Thermal overload protection 2 Reference side 2 7830 External trip function 1 Existent
7831 External trip function 2 Existent 7885 Parameter change-over Non-existent
7899 Rated system frequency fN 50 Hz Device control
8300 VDEW-MODE OF THE ANNUNCIATIONS AND MEAS. VAL.
8301 Testing via system-interface off Marshalling
6100 MARSHALLING BINARY INPUTS 6101 Binary input 1
001 0005 >Reset LED indicators active with voltage 6102 Binary input 2
001 2306 >Block I>> stage of back-up overcurrent active with voltage 6103 Binary input 3
001 0011 >User defined annunciation 1 active with voltage 6104 Binary input 4
001 0391 >Warning stage from Buchholz protection active with voltage 6105 Binary input 5
001 0392 >Tripp. stage from Buchholz protection active with voltage
6200 MARSHALLING SIGNAL RELAYS 6201 Signal relay 1
001 0511 General trip of device 6202 Signal relay 2
001 5671 Differential protection: General trip 6203 Signal relay 3
001 2451 Back-up overcurrent: General trip 6204 Signal relay 4
001 0141 Failure of internal 24 VDC power supply 002 0143 Failure of internal 15 VDC power supply 003 0144 Failure of internal 5 VDC power supply 004 0145 Failure of internal 0 VDC power supply 005 0151 Failure in I/O module 1 006 0152 Failure in I/O module 2 6206 Signal relay 6
001 1571 Trip by thermal overload protection 1 002 1621 Trip by thermal overload protection 2 6207 Signal relay 7
001 1566 Thermal overload prot.1: Warning stage 002 1616 Thermal overload prot.2: Warning stage 6208 Signal relay 8
001 5821 Restr. earth flt.: General trip 6209 Signal relay 9
001 5921 Transformer tank prot.: General trip 6210 Signal relay 10
001 0391 >Warning stage from Buchholz protection 6211 Signal relay 11
001 0392 >Tripp. stage from Buchholz protection
6300 MARSHALLING LED INDICATORS 6301 LED 1
001 0511 General trip of device memorized 6302 LED 2
001 5691 Differential prot.: Trip by IDIFF> memorized 6303 LED 3
001 5692 Differential prot.: Trip by IDIFF>> memorized
6304 LED 4
001 2451 Back-up overcurrent: General trip memorized 6305 LED 5
001 0141 Failure of internal 24 VDC power supply not memorized 002 0143 Failure of internal 15 VDC power supply not memorized 003 0144 Failure of internal 5 VDC power supply not memorized 004 0145 Failure of internal 0 VDC power supply not memorized 005 0151 Failure in I/O module 1 not memorized 006 0152 Failure in I/O module 2 not memorized 6306 LED 6
001 0095 Parameters are being set not memorized 6307 LED 7
001 5821 Restr. earth flt.: General trip memorized 6308 LED 8
001 5921 Transformer tank prot.: General trip memorized 6309 LED 9
001 1571 Trip by thermal overload protection 1 memorized 6310 LED 10
001 1621 Trip by thermal overload protection 2 memorized 6311 LED 11
001 0391 >Warning stage from Buchholz protection memorized 6312 LED 12
001 0392 >Tripp. stage from Buchholz protection memorized 6313 LED 13
001 0011 >User defined annunciation 1 memorized 6314 LED 14
001 5711 Diff. prot. error: 2 starpointCT for 1 not memorized 002 5712 Diff. prot. error: No starpointCT not memorized 003 1576 Thermal O/L prot.1 err.: Use not side 3 not memorized 004 1626 Thermal O/L prot.2 err.: Use not side 3 not memorized 005 2457 Back-up O/C error: Side 3 no exist not memorized 006 5828 Restr. earth flt. err.: Use not side 3 not memorized 007 5829 Restr. earth flt. err.: 2 starpoint CT not memorized 008 5830 Restr. earth flt. err.: No starpoint CT not memorized 009 5831 Restr. earth flt. err.: Only virt. obj. not memorized 010 5834 Restricted earth fault error: Non-exist not memorized 011 5928 Transformer tank prot. error: Non exist not memorized
6400 MARSHALLING TRIP RELAYS 6401 Trip relay 1
001 5691 Differential prot.: Trip by IDIFF>
002 5692 Differential prot.: Trip by IDIFF>>
003 2451 Back-up overcurrent: General trip 004 5821 Restr. earth flt.: General trip 005 5921 Transformer tank prot.: General trip 006 1571 Trip by thermal overload protection 1 007 1621 Trip by thermal overload protection 2 6402 Trip relay 2
001 5691 Differential prot.: Trip by IDIFF>
002 5692 Differential prot.: Trip by IDIFF>>
003 2451 Back-up overcurrent: General trip 004 5821 Restr. earth flt.: General trip 005 5921 Transformer tank prot.: General trip 006 1571 Trip by thermal overload protection 1 007 1621 Trip by thermal overload protection 2 6403 Trip relay 3
001 5691 Differential prot.: Trip by IDIFF>
002 5692 Differential prot.: Trip by IDIFF>>
003 2451 Back-up overcurrent: General trip 004 5821 Restr. earth flt.: General trip 005 5921 Transformer tank prot.: General trip 006 1571 Trip by thermal overload protection 1 007 1621 Trip by thermal overload protection 2 6404 Trip relay 4
001 5691 Differential prot.: Trip by IDIFF>
002 5692 Differential prot.: Trip by IDIFF>>
003 2451 Back-up overcurrent: General trip 004 5821 Restr. earth flt.: General trip 005 5921 Transformer tank prot.: General trip 006 1571 Trip by thermal overload protection 1 007 1621 Trip by thermal overload protection 2 6405 Trip relay 5
001 5691 Differential prot.: Trip by IDIFF>
002 5692 Differential prot.: Trip by IDIFF>>
003 2451 Back-up overcurrent: General trip 004 5821 Restr. earth flt.: General trip 005 5921 Transformer tank prot.: General trip 006 1571 Trip by thermal overload protection 1 007 1621 Trip by thermal overload protection 2 Settings Parameter set A
1100 TRANSFORMER DATA
1102 Rated voltage of winding 1 of transformer 115.0 kV 1103 Rated apparent power of winding 1 40.0 MVA 1104 Primary rated current of CT winding 1 400 A
1105 Starpoint formation of CT winding 1 Towards transformer 1106 Processing of zero sequence current of wind. 1 Io-elimination 1107 Prim. rated current of starpoint CT winding 1 400 A
1108 Earth point formation of starpoint CT wind. 1 Towards transformer 1121 Vector group numeral of winding 2 0
1122 Rated voltage of winding 2 of transformer 24.0 kV 1123 Rated apparent power of winding 2 40.0 MVA 1124 Primary rated current of CT winding 2 2000 A
1125 Starpoint formation of CT winding 2 Towards transformer 1126 Processing of zero sequence current of wind. 2 Io-elimination 1127 Prim. rated current of starpoint CT winding 2 2000 A
1128 Earth point formation of starpoint CT wind. 2 Towards transformer 1141 Vector group numeral of winding 3 11
1142 Rated voltage of winding 3 of transformer 38.5 kV 1143 Rated apparent power of winding 3 16.0 MVA 1144 Primary rated current of CT winding 3 1000 A
1145 Starpoint formation of CT winding 3 Towards transformer 1146 Processing of zero sequence current of wind. 3 Io-elimination 1147 Prim. rated current of starpoint CT winding 3 1000 A
1148 Earth point formation of starpoint CT wind. 3 Towards transformer
1400 DATA FOR VIRTUAL OBJECT
1401 Nominal current of virtual object 2000 A 1402 Primary rated current of CT 2000 A 1404 Primary rated current of starpoint CT 2000 A 1405 Earth point of the CT currents Same side 1600 TRANSFORMER DIFFERENTIAL PROTECTION DATA
1601 State of differential protection on
1603 Pick-up value of differential current 0.20 I/InTr 1604 Pick-up value of high set trip 7.5 I/InTr 1606 Slope 1 of tripping characteristic 0.25 1607 Base point 2 for slope 2 of tripping charact. 2.5 I/InTr 1608 Slope 2 of tripping characteristic 0.50 1610 State of 2nd harmonic restraint on 1611 2nd harmonic contend in the different. current 15 % 1612 Time for cross-blocking with 2nd harmonic 0 *1P
1613 Choice a further (n-th) harmonic restraint 5th harmonic 1614 n-th harmonic contend in the differen. current 80 %
1615 Active time for cross-blocking with n-th harm. 0 *1P 1616 Limit IDIFFmax of n-th harmonic restraint 1.5 I/InTr 1617 Max. blocking time at CT saturation 8 *1P
1618 Min. restr. current for blocking at CT satur. 7.00 I/InTr 1625 Trip time delay of diff. current stage IDIFF> 0.00 s 1626 Trip time delay of diff. current stage IDIFF>> 0.00 s 1627 Reset delay after trip has been initiated 0.10 s
1900 RESTRICTED EARTH FAULT PROTECTION DATA
1901 State of restricted earth fault protection on
1903 Pick-up value I REF> of restricted earth fault 0.10 I/In 1904 Critical angle of charact. trip-curve by REF 110 ° 1910 State of 2nd harmonic restraint off 1911 2nd harmonic contend in the REF-current 15 % 1912 Limit IREFmax of 2nd harmonic restraint 10.0 I/In 1925 Trip time delay of restricted earth fault 0.00 s 1927 Reset delay after trip has been initiated 0.10 s
2100 BACK-UP OVERCURRENT PROTECTION
2101 State of back-up overcurrent protection on
2103 Pick-up value for high current stage I>> 4.00 I/In 2104 Delay time for I>> TI>> 0.10 s
2111 Overcurrent time stage characteristic Definite time 2112 Pick-up value of overcurrent time stage I> 2.00 I/In 2113 Delay time for I> TI> 0.30 s 2114 Pick-up value of overcurrent time stage Ip 2.00 I/In 2115 Time multiplier for Ip (inverse time IDMT) Tp 0.50 s
2116 Method of RMS calculation for IDMT Without harmonics 2118 Reset delay after trip has been initiated 0.10 s
2121 Effective stage after manual closing of CB Ineffective
2400 THERMAL OVERLOAD PROTECTION 1
2401 State of thermal overload protection 1 Alarm only 2402 K-factor for thermal overload protection 1 1.10 2403 Time constant for thermal overload protection1 100.0 min 2404 Thermal warning stage 90 % 2405 Current warning stage 1.00 I/In
2406 Calculation method for thermal stages Theta from Imax
2500 THERMAL OVERLOAD PROTECTION 2
2501 State of thermal overload protection 2 Alarm only 2502 K-factor for thermal overload protection 2 1.10 2503 Time constant for thermal overload protection2 100.0 min 2504 Thermal warning stage 90 % 2505 Current warning stage 1.00 I/In
2506 Calculation method for thermal stages Theta from Imax
2900 MEASURED VALUE SUPERVISION
2903 Symmetry threshold for current monitoring 0.50 I/In 2904 Symmetry factor for current monitoring 0.50
3000 INCLUSION OF AN EXTERNAL TRIP FUNCTION 1
3001 State of external trip function 1 on 3002 Time delay of external trip function 1 0.00 s 3003 Reset delay after trip 0.10 s
3100 INCLUSION OF AN EXTERNAL TRIP FUNCTION 2
3101 State of external trip function 2 on 3102 Time delay of external trip function 2 0.00 s 3103 Reset delay after trip 0.10 s
3- Sơ đồ đầu vào/ra Rơle 7UT513
Dưới đây trình bày các bảng có chức năng sau:
Bảng 5.1 trình bày các lệnh dùng cấu hình cho các đầu vào(Binary Input).
Bảng 5.3 trình bày các lệnh dùng cấu hình cho các Rơle tín hiệu(Signal Relay hoặc các Led) Bảng 5.5 trình bày cấu hình ngầm định cho các Led
Bảng 5.6 trình bày các lệnh dùng để cấu hình cho các Rơle Trip(Trip Command) Bảng 5.7 trình bày cấu hình ngầm định cho các Rơle Trip
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