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PROTEC – BR Numerical Feeder Protection Relay
PROTEC – BR Numerical Feeder Protection Relay
PROTEC – BR Numerical Feeder Protection Relay
PROTEC – BR Numerical Feeder Protection Relay
AUTORECLOSER RELAY
AUTORECLOSER RELAY
Numerical Motor Protection Relay
Numerical Motor Protection Relay
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
PROTEC – NR NUMERICAL LINE PROTECTION RELAY PROTEC-NR IS A
PROTEC – NR NUMERICAL LINE PROTECTION RELAY PROTEC-NR IS A
DETAILS OF FIFTH/SEVENTH HARMONIC FILTER
DETAILS OF FIFTH/SEVENTH HARMONIC FILTER
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
Z WORLD MODULES
Z WORLD MODULES
Z WORLD MODULES
Z WORLD MODULES
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
MICROPROCESSOR BASED POWER SYSTEM PROTECTION
Hercules-EBX
Hercules-EBX
Hercules-EBX
Hercules-EBX
METERS - PROJECTS/DEVELOPMENTS
METERS - PROJECTS/DEVELOPMENTS
Transmission Line model System in MATLAB
Transmission Line model System in MATLAB
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MICROPROCESSOR BASED POWER SYSTEM PROTECTION

содержание презентации «MICROPROCESSOR BASED POWER SYSTEM PROTECTION.ppt»
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1MICROPROCESSOR BASED POWER SYSTEM 42fault relay Reverse Power Relay Thermal
PROTECTION. NUMERICAL RELAYS Overload Relay Broken Conductor Breaker
1.TRANSMISSION LINES PROTECTION Fail protection Other Functions Cold-load
2.TRANSFORMER 3.BUS-BAR 4.DISTRIBUTION Pickup 2 Setting Groups.
FEEDERS 5.GENERATOR 6.MOTOR. 43AUTORECLOSER RELAY. PROTECTION
2DIGITAL RELAYS LOW COST MATHEMATICAL FUNCTIONS THREE PHASE O/C WITH SELECTABLE
CAPABILITY/PROCESSOR BASED SELF CHECKING IDMT/DEFINITE TIME CHARACTERISTICS EARTH
LOW CT/PT BURDEN METERING FAULT REPORT FAULT WITH SELECTABLE IDMT / DEFINITE TIME
FAULT- LOCATION EVENT LOGGING CHARACTERISTICS COLD LOAD PICKUP LOGIC
OSCILLOGRAPHY RECORD/FAULT DATA CIRCUIT BREAKER FAILURE BROKEN CONDUCTOR.
INFORMATION. CONTROL FUNCTIONS MULTI-SHOT (4)
3DIGITAL RELAYS STANDARD HARDWARE AUTORECLOSER EACH SHOT IS INDEPENDENTLY
FLEXIBILITY IN OPERATION MULTI FUNCTION PROGRAMABLE CIRCUIT BREAKER CONTROL TWO
COMMUNICATION ADAPTIVE RELAYING SETTING GROUPS.
CONNECTIVITY WITH SCADA ADOPTING RTU 44Numerical Motor Protection Relay.
FUNCTION. FEATURES LOCKED ROTOR PROTECTION BASED ON
4DIGITAL INPUT SUBSYSTEM. ANALOG INPUT IMPEDANCE MEASUREMENT THREE PHASE O/C
SUBSYSTEM. DIGITAL OUTPUT SUBSYSTEM. RELAY WITH SELECTABLE IDMT /DEFINITE TIME
DIGITAL RELAY GENERAL BLOCK DIAGRAM. CHARACTERISTICS EARTH FAULT RELAY WITH
KEYBOARD INTERFACE. POWER SYSTEM SELECTABLE IDMT / DEFINITE TIME
INTERFACE. RELAY SOFTWAE. COMMUNICATON CHARACTERISTICS NEGATIVE SEQUENCE RELAY
PORT. POWER SUPPLY. CONSOLE PANEL LCD/ LED THERMAL OVERLOAD PROTECTION WIDE SETTING
TARGETS/ALARMS. RANGE SUITABLE FOR MEDIUM AND LARGE
5Substation Equipment. MUX. DIGITAL MOTORS.
RELAY HARDWARE BLOCK DIAGRAM. Address 45Z WORLD MODULES. BL2120. BL2020.
/Data Bus. SIGNAL CONDITIONING EQUIPMENT. Low-cost, high performance modules used in
ANALOG TO DIGITAL CONVERTER (ADC). RAM. protection relays Up to 28 digital I/O Up
ROM. MICRO- PROCESSOR. EEPROM. POWER to 11 A/D and 2 D/A 4 serial ports
SUPPLY. LED Target. LCD Display Front- Optional 512K Flash / 512K SRAM Onboard
Panel Controls. Serial I/O. RELAY O/P. relay.
CONTACT INPUTS. OPTO- ISOLATION. OPTO- 46FEATURES. Microprocessor. Rabbit 2000T
ISOLATION. @ 22.1 MHz. Flash. 256K. SRAM. 128K.
6CONFIGURATION FOR DEMONSTRATION. 20’ Backup Battery. Socketed 3-V lithium
MONITOR. 20’ MONITOR. 20’ MONITOR. ON LAN coin-type, 265 mA.h, supports RTC and
INK JET PRINTER-2 LASER JET PRINTER-1. SRAM. Digital Inputs. 24: protected to ±
OWS. OWS. OWS. OC NET. HUB. WINDOWS NT 36 V DC. 16: source/sink 200 mA each, 36 V
BASED MMI. REDUNDANT SERVER + EWS. SERVER DC max. Digital Outputs. 11 at 1 MW,
+ EWS. LINE BAY. TRANSFORMER BAY. BUSBAR 12-bit resolution, ±10 V DC,up to 4,100
BAY. BIT BUS(MMI). BIT BUS(REDUNDANT). BAY samples/sec. Analog Inputs. Analog
CONTROLLER. BAY CONTROLLER. BAY Outputs. Four 12-bit resolution, 0-10 V
CONTROLLER. PROTECTION. PROTECTION. DC*,update rate 12 kHz. 4 total: two
PROTECTION. 3-wire (or one 5-wire) RS-232, 1 RS-485,
7ONE LINE DIAGRAM OF THE DISTRIBUTION and one 5 V CMOS-compatible (programming).
SUBSTATION AT CORP. R & D DIVIN. Serial Ports. Yes. Real-Time Clock. Five
33:6.6 KV Y ? TRANSFORMER. FOR METERING. 8-bit timers (four cascadable from the
FOR O.C PROTECTION. FOR METERING. M O C B. first) and one 10-bit timer. Timers. Yes.
ISOLATOR. CB. FOR DIFFERENTIAL PROTECTION. Watchdog/Supervisor. 9-36 V DC, 3 W max.
POWER T/F. DIFFERENTIAL PROTECTION. PT. Power. -40°C to +70°C. Operating Temp.
FOR O.C PROTECTION. FOR METERING. 6.6 5-95%, non-condensing. Humidity. Board
KV:110 V. OCB 800A. 400 A O C B OC Size. 4.14'' x 3.41'' x 0.93'' (105 x 87 x
PROTECTION. BUS COUPLER. 100:1. 1. 2. 3. 24 mm).
4. 5. 6 7 8. 9. 11. 10. FEEDER 1. STATION 47UPGRADATION & MODERNISATION OF 11
TRANSFORMER. TO ELECTO MAGNETIC LAB. KV SUBSTATIONAT GPX BHEL, BHOPAL. THE
8WAVE SHAPE OF CURRENT SIGNAL UNDER CONTROL AND RELAY PANEL PROPOSED TO BE
LOAD CONDITION. X-Scale 1cm =10 ms Y- SUPPLIED WILL HAVE - PROTECTION PANELS FOR
Scale 1 cm=5 mV. 2.5 ms. FILTER OUTPUT. ALL INCOMING AND THE OUTGOING FEEDERS -
LINE CURRENT. THE CONTROL PANEL WHICH WILL SERVE THE
9WAVE SHAPE OF CURRENT SIGNAL AT NO PURPOSE OF OWS & EWS. THE OWS &
LOAD. EWS COMMUNICATE WITH THE REMOTE RTUS
10BASIC ALGORITHMS. 1.Man & THROUGH HUBS CONNECTED BY MEANS OF RS 485
Morrison. LINK.
112.RAMA MOORTY. 48THE SCADA WILL HAVE THE FOLLOWING
123.Mc Innes & Morrison. FEATURES - SINGLE LINE DIAGRAM SHOWING THE
13THE DETAILS OF THE PROTECTION STATUS OF VARIOUS FEEDERS - BREAKER &
ALGORITHM. OVER CURRENT RELAY TP 51 UNDER ISOLATOR CONTROL - METERING - POWER/
VOLTAGE RELAY B27 RATIO DIFFERENTIAL RELAY ENERGY MEASUREMENT - ALARM INDICATIONS -
B 87. EVENT RECORDS WITH TIME STAMPING AT RTU
14PROTEC – BR Numerical Feeder LEVEL - FAULT RECORDS - SELF DIAGNOSTICS -
Protection Relay. PROTEC-BR is a PASSWORD PROTECTION FOR CHANGING THE DATA
microprocessor based multifunction numeric - MODBUS PROTOCOL COMMUNICATION BETWEEN
relay for a distribution substation THE MASTER & SLAVES.
feeder. FUNCTIONS: Three phase o/c relay 49
50 / 51 Earthfault relay 50N / 51N Thermal 50EACH RELAY ACTING AS AN RTU WILL BE
Overload relay 49 Undercurrent protection COMMUNICATING WITH THE SCADA THROUGH RS
37 Circuit Breaker failure 50 BF Detection 485 PORT. A DATA CONCENTRATOR AT THE
Cold load pickup Latching output contacts MASTER END COMMUNICATES WITH THE RTUS IN
86 Setting groups 2 Blocking logic Event THE MULTI DROP MODE ON AN RS 485 BUS. THE
recording & Metering. FEATURES MMI RESIDES IN THE PC IN THE VB
Applicable to substations of various types ENVIRONMENT POSSIBILITY OF A SINGLE
and ratings Compact rack User configurable MULTIDROP LOOP FOR ALL RTUS BEING WORKED
protection scheme Online display of OUT. MODBUS COMMUNICATION IN RTU MODE WILL
parameters and variables Powerful self BE EMPLOYED. DATA CONCENTRATOR
diagnostics and failsafe mode of operation COMMUNICATES WITH A PC ON AN RS 232 BUS.
Can be powered with 110 / 220 V dc from 51MODBUS FUNCTIONS 01 - READ STATUS OF
station batteries CPRI certification as OUTPUT CONTACTS 02 - READ STATUS OF
per IEC-60255 standards. DIGITAL INPUTS 03 - READ RELAY SETTINGS 04
15AUTORECLOSER RELAY. PROTECTION - READ MEASURED VALUES 06 - RESET SINGLE
FUNCTIONS THREE PHASE O/C WITH SELECTABLE OUTPUT 16 - PRESET MULTIPLE OUTPUTS EVENTS
IDMT/DEFINITE TIME CHARACTERISTICS EARTH / FAULTS CHANGE OF ANY DIGITAL OUTPUT
FAULT WITH SELECTABLE IDMT / DEFINITE TIME CHANGE OF ANY DIGITAL INPUT PROTECTION
CHARACTERISTICS COLD LOAD PICKUP LOGIC FUNCTION PICKING UP SETTINGS CHANGE
CIRCUIT BREAKER FAILURE BROKEN CONDUCTOR. PASSWORD CHANGE PROTECTION OPERATION.
CONTROL FUNCTIONS MULTI-SHOT (4) 52
AUTORECLOSER EACH SHOT IS INDEPENDENTLY 53
PROGRAMABLE CIRCUIT BREAKER CONTROL TWO 54
SETTING GROUPS. 55
16Numerical Motor Protection Relay. 56
FEATURES Locked Rotor Protection based on 57
impedance measurement Three phase o/c 58
relay with selectable IDMT /definite time 59
characteristics Earth fault relay with 60
selectable IDMT / definite time 61
characteristics Negative sequence relay 62Hercules-EBX. Hercules is a
Thermal Overload protection Wide setting high-integration EBX format (8.00” x
range Suitable for medium and large 5.75”) CPU based on the VIA Eden Pentium-3
motors. class processor. Complete CPU on one board
17 – processor, video, audio, Ethernet, I/O,
18 data acquisition On-board DC/DC power
19 supply for compatibility with a wide range
20 of power systems Extremely rugged design
21PROTEC – NR NUMERICAL LINE PROTECTION perfect for mobile and harsh environment
RELAY PROTEC-NR IS A MICROPROCESSOR BASED applications PC/104+ expansion capability
MULTIFUNCTION NUMERIC RELAY TO PROVIDE for great flexibility in customizing with
DISTANCE PROTECTION FOR TRANSMISSION add-on boards Low power consumption: Only
LINES. PROTECTION FUNCTIONS DISTANCE RELAY 10-12 watts depending on processor speed.
(PHASE TO GROUND) 21 G DISTANCE RELAY 63Hercules offers the highest level of
(PHASE TO PHASE) 21 P THREE PHASE DIR. integration of any EBX format CPU. This
OVERCURRENT 67 P DIRECTIONAL EARTH FAULT single board contains all the following
67 N THREE PHASE OVERVOLTAGE 59 THREE features soldered directly on board:
PHASE UNDERVOLTAGE 27 AUTORECLOSER WITH Processor Memory Video, including VGA, LCD
VOLTAGE AND PHASE CHECK SYNCHRONIZATION. (lvds), and TV output Audio, including
22CERTIFICATION AT CPRI (As per IEC 1Wx2 amplifier and SoundBlaster
60255 Std.). 1.Accuracy Test 2. 1MHz Burst compatibility 10/100Mbps Ethernet
Disturbance test 3.Insulation Test Extensive system I/O, including 4 USB
4.Mechanical Endurance Test 5.Making and ports, 4 RS-232/485 ports, and dual IDE
Breaking Capacity 6.Thermal Over Load Test channels Data acquisition option,
7.Auxiliary Voltage Variation Test including 32 analog inputs, 4 analog
8.Stability Test 9.Overshoot Test. outputs, 40 digital I/O, 2 counter/timers,
23DESIGN AND DEVELOPMENT OF FILTE BANK 4 pulse-width modulation outputs, and
PROTECTION FOR NATIONAL HVDC PROJECT watchdog timer Built-in DC/DC power supply
ADVANTAGES INTERCONNECTION OF TWO SYSTEM with wide-range 5-28VDC input and 45W
AT DIFFERENT FREQUENCY FLEXIBILITY IN output power.
CONTROL OF POWER FLOW REDUCED TRANSMISSION 64REAL-TIME OPERATING SYSTEM RTLinuxPro,
LOSSES DAMPINS OUT OSCILLATIONS AND the hard real-time operating system.
IMPROVE STABILITY MARGINS REDUCED Provides a real-time kernel with Linux
CONDUCTOR SIZE AND RIGHT OF WAY REDUCED running as a pre-emptable thread. This
CORONA AND RADIO INTER-FERENCE LIMITING design provides superior performance by
TRANSFER OF FAULT CURRENT. providing hard real-time functionality
24NHVDC PROJECT USES ONE CIRCUIT OF with guaranteed latencies. Full TCP/IP
EXISTING DOUBLE CIRCUIT 220kV AC LINE with deep support of layered protocols and
BETWEEN BARSOOR AND LOWER SILERU FIRST wide driver coverage.
STAGE 100kV, 100MW POWER IN THE MONO POLAR 65ENERGY METERS. DEVELOPMENT OF 3Ph
MODE USING EARTH RETURN SECOND STAGE ± ENERGY METER WITH MDI, LED DISPLAY, &
220kV WITH OPERATION IN THE BIPOLAR MODE RTC, BASED ON SAMES ASIC. DEVELOPMENT OF
WITH A TRANSMISSION CAPABILITY OF 400 MW. EPROM BACKED µCONTROLLER BASED 3Ph LCD
25MAIN EQUIPMENTS OF NHVDC PROJECT * TWO METER, WITH IEC 61106 PORT (IR PORT), RTC
SERIES CONNECTED 12 PULSE CONVERTERS & MDI FOR ELECTRONIC ENERGY METER NON
CONSISTING OF VALUES AND CONVERTER LCD TYPE OF EDN MAKE.
TRANSFORMER * SMOOTHING REACTOR IN THE DC 66METERS - PROJECTS/DEVELOPMENTS.
CIRCUIT TO REDUCE HARMONIC CURRENT AND TITLE:DEVELOPMENT OF IrDA PORT FOR SINGLE
TRANSIENT O/C * FILTERS ON THE AC SIDE AND PHASE ELECTRONIC ENEGY METER WITH LCD
ON THE DC SIDE ALSO TO BY PASS HARMONIC DISPLAY DEVELOPED Version 1 WITH AT89S8252
GENERATED AT THE CONVERTERS * SHUNT MICON DEVELOPED Version 2 WITH AT89C2051
CAPACITORS TO COMPLEMENT THE REACTIVE MICON DEVELOPED Version 3 FOR Ph II OF
POWER GENERATED * CONTROL SYSTEM TO GIVE BHOPAL SCADA PROJECT STATUS: COMPLETED.
THE DESIGNED OPERATIONAL PERFORMANCE OF ADDITIONAL FEATURES LIKE i) CHANGE OF
THE TRANSMISSION SYSTEM. Sl.No, & UID No. THROUGH PDA ii)
26DETAILS OF FIFTH/SEVENTH HARMONIC IMPLEMENTATION OF RS232/RS485 PORT
FILTER. IMPLEMENTED AT THE REQUEST OF EDN.
27 67METERS - PROJECTS/DEVELOPMENTS. LATEST
28 VERSION (VERSION 3), BUILT WITH STATE OF
29 THE ART PIC16F876 MICON. CONTINUED
30Differential Protection: Alarm : 15 A TECHNICAL SUPPORT PROVIDED DURING
(pri) / 0.12 A (scy) = 0.348 Vp at ADC MANUFACTURE OF IrDA METER. COST REDUCTION
Trip : 30 A(pri) / 0.24A (scy) = 696 Vp PROCESS REQUIRES TIME, BHEL EDN TO ADDRESS
Capacitor Unbalance Protection: Alarm : ALL REQUIREMENTS. IrDA Meter.
0.150 A(pri) / 75mA (scy)=0.212 Vp at ADC 68METERS - PROJECTS/DEVELOPMENTS. JOINT
Delayed Trip: 0.124 A(pri) / 107 mA (scy) PATENT. ‘A NOVEL SCHEME FOR RURAL &
0.302 Vp at ADC Trip: 0.297 A(pri) 0.1485 URBAN ELECTRIFICATION BASED ON NEW ENERGY
A(scy) 0.402 Vp at ADC Backup Trip:0.594 METER MODULES’.
A(pri) / 0.297 A(scy)=0.804 Vp at ADC 69METERS - PROJECTS/DEVELOPMENTS.
Resistor/ Reactor Harmonic overload FUTURISTIC TRENDS. GSM TECHNOLOGY FOR
protecion Reactor: Alarm – 64.4 A (pri) PAGING FOR ALL VARIETIES OF METERS. BLUE
Trip 66.0 A (pri) Alarm 23.0 A (pri) TOOTH APPLICATIONS 1Ph/3Ph METERS MAX
Resistor Trip 27.0 A (Trip) Fundamental DISTANCE 100Mts. SMART CARD ENERGY METER
Frequency Overload Protection Alarm : 65 A BASED ON THE STATE OF THE ART CRPTO
(pri) /0.5 A (scy) =1.47 Vp at ADC Ktrip : CARDS,WITH VENDING SOFTWARE.
70 A(pri) /0.55 A(scy) 1.569 Vp at ADC 70ACTION PLAN MANUFACTURE OF NUMERICAL
High-set: 80 A(pri)/ 0.65(scy) 1.7929 Vp RELAYS ROADMAP FOR METERS.
at ADC. CTF 31 Q2-X13. 125/1. 12/32 71FAULT IDENTIFICATION AND LOCATION IN
HARMONIC 20 MVAR FILTER BANK PROTECTION AT TRANSMISSION LINE BY USING DFT &
NHVDC PROJECT SITE . (LOWER SILERU) T.B.No WAVELET TRANSFORM.
AZ - 14 AFP. C H 1.31uF. CTF 32 Q2-X12. 72Phase to Ground Faults: Positive
2/1. R H 625 ohms. L H 20.5mH. ? ? ? ? L L Sequence Impedance of Line upto the Fault
20.5 ohms. R L 125 ohms. C L 1.26uF. CTF from Relay : VA. Z1 =. I0. IA+. Z0-Z1.
33 Q1-X4. 150/1. CTF 34 Q1-X5. 125/1. ? ? where. Z1. I - IA/3. VA - the phase to
31 ground voltage of faulty line. IA - line
32 current of phase A. Z1 - +ve sequence of
33 line impedance. Z0 - zero sequence of line
34 impedance. 0.
355/7 Filter Bank Current at Various 73Phase to Phase Faults: Va- Vb. Z1 =.
Loads. Harmonic Currents. Power Flow Fund Ia- Ib. Impedance of the Line upto the
Third Harmonic Currents 11th Fifth Seventh Fault from relay: where. Va - phase to
30MW 77.9 10 15.8 5.0 --- 40MW 75.6 7 22.9 ground voltage of phase A. Vb - phase to
11.2 --- 50MW 80.1 15 26.5 12.3 --- 60MW ground voltage of phase B. Ia - Line
73.8 11.2 34.6 15.6 5.0. current of phase A. Ib - Line current of
36HARMONIC CURRENTS AT 100MW. FILTER phase B.
Fund Third Fifth Seventh Eleventh BANK 74Discrete Fourier Transform: Where k =
Third Harmonic 57.4 4.2/5.2 --- --- --- 0,1,2,3……(N-1). The Fourier sine and
5/7 72.9 --- 52.4 28.3 --- HP 44.3 --- --- cosine coefficients are given by. ak= 2/N
--- 5.2. ? Xm cos(2? km / N). bk= 2/N ? xm sin (2?
37125/1. 125/1. 2/1. L L 20.5 ohms. L L km / N ). ). N-1 [1/N] * ? Xm e – (2?km) /
20.5 ohms. CL3.36uF. FILTER BANK N m=0. X(t) =. R.M.S. Value of signal X
CONNECTIONS. CTF 31 Q2-X13. CTF 41 Q1-X6. (t) is given by. X = (1/ ?2 ) (? a2 + b.
CTF 51 Q1-X10. 125/1. C H 1.31uF. C H Phasor representation is given by X1 = F1
1.31uF. 2/1. CTR 42. CTF 32 Q2-X12. CTR 52 + j F2. where F1 = b1/ ?2 F2= a1/ ?2. N
Q1-X11. 2/1. Q1-X7. R H 625 ohms. R H 625 -1. m = 1. N -1. m = 1. k. k. 2.
ohms. L H 20.5mH. L H 300mH. L H 20.5mH. 75Discrete Wavelet Transform: DWT(m,n)
LL 34.6 mH. C L 1.26uF. C L 1.26uF. R L =. ? X(k) ?*. (k). Where ?a,b(k) =
125 ohms. R L 125 ohms. CTF 53 Q1-X12. CTF ?((k-b)/a). ?a. Is a scaled and dilated
43 Q1-X8. 400/1. CTF 33 Q1-X4. 150/1. version of mother wavelet ?(k). k,m,n are
150/1. 150/1. CTF 44 Q1-X9. CTF 54 Q1-X13. integer values. For computation efficiency
CTF 34 Q1-X5. 125/1. 125/1. 125/1. a0 and b0 are set to 2 and 1. a is the
38 scale parameter and b is the dilation
39NUMERICAL RELAYS, SCADA AND ENERGY parameter. b=na0. b0. Choose a = a0. and.
METERS. Dr.M.P.SONI TRANSMISSION & Discrete Wavelet transform (DWT) of the
PROTECTION SYSTEM CORP. R&D DIVISION. signal X(k) is given by: k. a,b. m. m. m.
40NUMERICAL FEEDER PROTECTION. A 76In the present analysis GABOR wavelet
multifunction numerical feeder protection has taken as mother wavelet And is given
relay developed jointly with SWE, Bhopal. by the following equation. -(t2/k). ?(t) =
Realized on low cost, powerful e (cos(t)). Where k =2,4,16,64------- With
microprocessor based hardware. Integrated GABOR wavelet it is easy to find out the
with the breaker panels of BHEL, Bhopal frequency Components of the signal because
and supplied on a commercial basis. it is based on exponential Function like
Features and cost comparable with those the fourier transform.
supplied by leading relay manufacturers 77Transmission line model System.
like ALSTOM, ABB etc. 78Transmission Line model System in
41PROTEC – BR Numerical Feeder MATLAB.
Protection Relay. PROTEC-BR is a 79Representation of Transmission line
microprocessor based multifunction numeric model in MATLAB: I n this model
relay for a distribution substation Transmission line is modeled as
feeder. FUNCTIONS: Three phase o/c relay distributed Parameters line ,representing
50 / 51 Earthfault relay 50N / 51N Thermal a 225-km-long,240-kv ideally Transmission
Overload relay 49 Undercurrent protection line with +ve sequence impedance , ZL(1) =
37 Circuit Breaker failure 50 BF Detection (8.05 +j 110.66) ?. Zreo sequence
Cold load pickup Latching output contacts impedance,ZL(0) =(79.19 +j 302.77) ?. The
86 Setting groups 2 Blocking logic Event Thevenin impedance of area A is Za =(5 +j
recording & Metering. FEATURES 27.7) ?. The Thevenin impedance of area B
Applicable to substations of various types is Zb=0.6 +j 9.3) ?. The source voltages
and ratings Compact rack User configurable are EA = 240KV, and Eb = 240. ? Where ? is
protection scheme Online display of the load angle in degrees.
parameters and variables Powerful self 80
diagnostics and failsafe mode of operation 81
Can be powered with 110 / 220 V dc from 82
station batteries CPRI certification as 83
per IEC-60255 standards. 84
42PROTEC-BRE NUMERICAL FEEDER PROTECTION 85
RELAY (ENHANCED) Enhanced version of 86
PROTEC-BR. Protection Functions 87
Directional / Non-directional Over current 88
relay Directional / Non-directional Earth 89THANK YOU!
MICROPROCESSOR BASED POWER SYSTEM PROTECTION.ppt
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«English for you» - ENGLISH FOR YOU. Может ли компьютер заменить учителя? Артикль Множественное число Предлоги. Узнать насколько хорошо ты усвоил материал тебе помогут: «Английский для тебя» (курс английского языка с применением ИКТ). Грамматика станет твоим другом. При выполнении заданий программа оценивает твой результат и предоставляет отчёт.

«Британский и американский английский язык» - Несколько слов о природе лексических особенностей американского варианта английского языка. Английский язык в современном мире. Разница в произношении отдельных звуков и слов, интонации, ударении и ритме, употреблении отдельных грамматических структур не является препятствием при общении образованных людей.

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