2017 AARTECH SOLONICS PVT LTD. SHUBHAM PAL, KALIM UDDIN, UDAY SHANKAR
[CONTROL & RELAY PANEL] Students are required to undergo industrial training for one month as part of the requirement to complete the 4 years course for the bachelor of engineering (Hons.) electrical and electronics engineering. The attachment was held during the semester break of the 6th semester of the study.
MINOR TRAINING REPORT REPORT ON Control & Relay Panel
TRAINING FROM Aartech Solonics Pvt. Ltd.
UNDER THE GUIDANCE OF Mr. Swanant Mr. Jitendra Chauhan
SUBMITTED TO-
SUBMITTED BY-
Ms. Ritikav
Shubham Pal
(HR, Aartech.
Uday Shankar
Solonics Pvt Ltd.)
Kalim Uddin
PREFACE
Summer training plays a very important role in Engineering courses; as it gives knowledge of the things That we get in our book. We get theoretical knowledge from our books. So it is important to get the practical knowledge as well for full command on our knowledge. It also clarifies about total working process of a firm. And in the firm how engineering works to utilize their skills resources and manpower beneficially
Acknowledgement We are very thankful to everyone who all supported us, for we have completed our training effectively and moreover on time. We would like to express my special thanks of gratitude to our teacher Mr. Swanant & Mr. Jitendra Chauhan who gave us the golden opportunity to do this wonderful training on the topic Control & Relay Panel, which also helped us in doing a lot of Research and we came to know about so many new things. We are doing this training not only for marks but to also increase my knowledge.
Thanking you Shubham Pal Uday Shankar Kalim Uddin
ABSTRACT Students are required to undergo industrial training for one month as part of the requirement to complete the 4 years course for the bachelor of engineering (Hons.) electrical and electronics engineering. The attachment was held during the semester break of the 6th semester of the study. During the one month period of training, students will be supervised and monitored by one supervisor. The industrial training was completed at AARTECH SOLONICS PVT LTD. During the one month of training the working environment was successfully exposed in order to gain more experience and knowledge.
COMPANY OVERVIEW:-
Aartech believes in entrepreneurially driven identification of specialized and selected applied energy applications, followed by careful application of its R&D, domain knowledge and skills in an integrated systems solution approach to meet such growing challenges. Its business practice is designed around the concept of System Solution Division (SSDs). It is a reflection of Aartech’s commitment to strive to provide comprehensive system solutions, and not just isolated products or services to its customers. It has several operative System Solution Divisions (SSDs), BTS 2000 - Microprocessor Based Fast Bus Transfer Systems (being the flagship SSD at present), UltraCapacitor, Load Checker, Control & Relay Panel naming a few. As part of its stated value of being a multi-product, multitechnologist company, Aartech has an open-door policy for techno-entrepreneurs in India and abroad to explore the possibilities of joining Aartech’s creative efforts.
COMPANY PRODUCTS:-
BTS 2000 :BTS 2000 Fast Bus Transfer System is an advanced microprocessor based Bus Transfer System for Power Generation Utilities & Continuous Process Industries. By performing high speed motor bus transfers between two independent sources of power under prescribed safe system parameters, the Bus Transfer System provides continuity of power supply to the critical motors of a plant. This preempts any interruption to the processes running in the plant in spite of the contingency of the feeding source. Aartech has more than 25 years of experience in deploying fast bus transfer system solutions and 300's of installations to a variety of demanding system requirements. BTS 2000 is a proven solution in thermal power generation as well as nuclear power generation of ratings from 25MW captive power unit’s right upto 660MW. It has been selectively used in hydro power generation units as well. Many of the continuous process facilities including Metals, Petrochemical, Mining, Water
Handling are finding rich benefit by use of these systems. Industrial requirements are generally more stringent and non-empirical, and the power quality, process sensitivity, interruption nature, reliability issues and system response need to be evaluated on a case-to-case basis to offer an appropriate solution.
KRANKING ULTRACAPACITORS:About Kranking The KranKing range of Ultracapacitors has been specially designed for engine-cranking applications. They can greatly reduce the burden on lead-acid batteries during enginestarting (cranking), enabling a substantial reduction in the battery-size, and improved battery-life. Unlike batteries whose service life seldom exceeds 1000 cycles, KranKing devices have proven their performance for over 300,000 cycles, between -45°C to 55°C!! Thus, the overall reliability of the engine-cranking system can be greatly enhanced.
KranKing Features
Power Cycling Capacity > 300,000 Cycles
Deep Charge - Discharge Handling Capacity
Wide Operating Temperature(-45°C to +55°C)
Lowest Internal ESR in its Class ( only few milli-ohms)
No Maintenance & Long Service Life
Safe - Can Handle Short Circuit / Reverse Polarity
Kranking Applications Ultracapacitors applications are classified under three categories: 1. Energy Storage 2. Power Quality 3. Pulse Power KranKing Ultracapacitors Application.
Defense vehicles
Commercial heavy vehicles
serves
under
Pulse
Power
DG sets
Railway Locomotive
Fleet Application
Off shore Marine application
CONTROL & RELAY PANELS About Control Relay Panel A control & relay panel is designed to provide to control the associated line or transformer through outdoor switchgear at various 11KV, 33KV and 66KV zonal substations. The control & Relay panels are complete in themselves with all main and auxiliary relays, annunciation relay, fuses, links, switches, wiring, labels, terminal blocks, earthing terminals, base frame, foundation bolts, illumination, cable glands etc. These panels are used for the control & monitoring of electrical equipment such as transformers, generators and circuit breakers. Indoor Control panel for Outdoor VCB includes IDMT Numerical relay, Master Trip Relay, Trip circuit Supervision Relay, Indications & meters etc.
These control & Relays panels are available in various combinations as single circuit or multi-circuit depending upon the customer requirements.
Features of Control Relay Panel Complete protection of transformer or feeder
Alarm & Annunciation features
Simplex Construction
Multiple Construction Choice (front door or rear door type)
Also available with Communicable Relays
Multiple scheme configurations in a Single panel
Compact
CPRI tested
Vendor Approved from government Utilities like MPEB – Jabalpur, Bhopal & Indore
Applications of Control Relay Panel 11KV Switchgear: 11kV switchgear products are used for the protection of power generation & distribution in electrical equipments.
Transformer protection
Generator protection
Feeder protection
Capacitor switching
33KV Switchgear: 33kV switchgear products mainly used to protection of power transmission electrical equipments.
Transformer protection
Feeder protection
66KV Switchgear: 66kV switchgear products mainly used to protection of power transmission electrical equipments.
Transformer protection
Feeder protection
DECLARATION I hereby declare that this industrial training report is the record of authentic work carried out by me during the period from 5 June 2017 to 5 July 2017 in Aartech Solonics pvt ltd. Mandideep under the supervision of my training incharge Mr. Swanant. The details of training and experience mentioned in this report describe my involvement in the field of electrical and electronics engineering. All the information contains in this report is certain and correct to the knowledge of mine.
Signature: -
Name: - Shubham pal (0161EX141017) Uday Shankar (0161EX141019) Kalim Uddin (0161EX141008)
Date: - 12/08/17
TABLE OF CONTENTS: 1. INTRODUCTION 2. PANEL ENCLOSURE TECHNICAL DESCRIPTION i. MECHANICAL ASSEMBLY ii. ELECTRICAL ASSEMBLY iii. WIRING iv. ELECTRONIC ASSEMBLY
3. CERTIFICATION 4. CLASSIFICATION 5. SCHEMES 6. PROCEDURE 7.
REFERENCES/BIBLIOGRAPHY
8.
APPENDIX
9. CONCLUSION 10. GLOSSARY
INTRODUCTION
Control & Relay Panels facilitate centralized control of the related controlled equipment in power stations, switching stations and industrial plant. Top Rank’s design of control & relay panels are based on the concept of unit assembly from standard parts. The panels are bolted together to form a board. This approach permits replacements, extensions, rearrangement and addition when necessary. These panels are used for the control & monitoring of electrical equipments such as transformers & circuit breakers. Indoor Control panel for Outdoor VCB includes IDMT Numerical relay, Master Trip Relay, Trip circuit Supervision Relay, Indications & meters etc. These control & Relays panels are available in various combinations as single circuit or multi-circuit depending upon the customer requirements.
PANEL ENCLOSURE
TECHNICAL DESCRIPTIONThese panels are manufactured with 2-2.5mm of steel sheet with a standard dimensions of 2312mm (H) x 1000(W) x 762(D).
MECHANICAL ASSEMBLYa. b. c. d. e.
Mounting Plate. Lane plate. Panel base. Hooks. PVC channels.
Electrical assembly a. b. c. d. e.
MS channel. Terminal block. Fuse base. PVC channel. Neutral links.
Wiring. Electronic assembly.
MOUNTING: All equipment on and inside the panels shall be mounted and completely wired to the terminal blocks ready for external connection. The equipment of panel shall be mounted flush. Equipment shall be mounted such that removal and replacement can be accomplished individually without interrupting of service to adjacent devices and are readily accessible without use of special tools. Terminal marking shall be clearly visible and of permanent nature. The contractor shall carry out cut out, mounting and wiring of the bought out items which are to be mounted in the panel in accordance with the corresponding equipment manufacturer's drawings. No equipment shall be mounted on the doors. All the equipment connections and cabling shall be designed and arranged to minimize the risk of fire and damage.
PAINTING: All unfinished surface of the steel panels and frame work shall be sand blasted to remove rust, scale, foreign adhering material or grease. A suitable rust resisting primer shall be applied on the interior and exterior surfaces of the steel, which shall be followed by of an under coat suitable to serve as base and binder for the finishing coat. The finishing coat on the exterior of the panel & on the interior faces shall be as per following table: -
S. No.
Painting
1
Color
a) External Color shade
Shade RAL 7032 (Pebble Grey)
b) Internal Color shade
White
c) External Finish
Texture Semi Glossy
d) Internal Finish
Texture Semi Glossy
e) Base Frame Color shade
Black
2
Type of Painting
Powder Coating
3
Thickness of Paint
Average of Powder Coating
4
Phosphating
Sheet Steel shall be phosphated in accordance to IS 6005
5
Special
Small quantity of paint shall be supplied for minor touchup work required
Instruction
at site.
80-100 microns
MIMIC DIAGRAM: Coloured mimic diagram and symbols showing the exact representation of the system shall be provided in the front of control panels. Colour scheme for mimic diagram. KV Class
Colour
Shade Index as per ISS
--------
-----------
400KV
Dark Violet
796
220 KV
Light orange
557
132 KV
Signal Red
537
----------------------
33 KV
Brilliant green
221
11 KV
Air Craft blue
108
400/230 V
Black
309
Earth
White
-
110 V
Canary yellow
-
LED Position Indicators for the position indication of isolators, earth switches and ON/OFF indication for such breaker shall be mounted along the mimic diagram at appropriate location.
AUXILIARY SUPPLY: D.C. Supply voltage shall be normally fed from Battery charger and battery connected in parallel which is 220V +/- 10%. In case of failure of the AC supply to battery charger, DC Supply voltage will be available automatically from lead acid Battery. The D.C Supply voltage may vary from -10% to + 10%. The D.C. system shall be 2 wire with necessary positive earth fault and negative earth fault annunciation scheme. The ripple content in the D.C. supply from charger will be less than 2%. AC Auxiliary supply voltage for the C&R panel shall be 230V, 1phase, 50Hz grounded with +/- 10% voltage variation.
PANEL INTERNAL WIRING: All wiring shall be carried out with 1100V grade Single core standard copper conductor wires with PVC insulation conforming to IS 694 or equivalent International Standard. The following colour scheme shall be used for the wiring:-
TERMINAL BLOCK: All internal wiring to be connected to the external equipment shall terminate an terminal blocks, preferably vertically mounted on the side of each panel. Terminal blocks shall be 1100 V grade and have 10Amp continuous rating, moulded piece, complete with insulated barriers, stud type terminals, washers, nuts and lock nuts, inserts. The stud, washers, nuts, locknuts, inserts shall be tin plated Brass/Brass. Terminal block design shall include markings of terminals and the terminals shall be provided with transparent
plastic, slip on/clip on terminal covers. Markings on the terminal strip shall correspond to wire number and terminal numbers on the wiring diagram. All studs, nuts, screw etc. shall be threaded according to IS: 7684 or equivalent International Standards.
FUSES AND LINKS: H.R.C. Cartridge fuse and link of adequate current and voltage rating shall be provided inside the cubicle in an easily accessible location. The selection of the main and sub circuit fuse ratings shall be such as to ensure selective clearance of sub circuit faults. Fuses shall have operation indicators for indicating blown fuse condition. Fuse carriers and bases shall have imprints of rating, voltage and circuit designation.
INDICATING LAMPS: These lamps shall be of LED type and suitable for being operated on S/S D.C. voltage or AC voltage or P.T. secondary supply as and where applicable. All Lamps shall be interchangeable, panel mounting type with rear terminal connection and shall afford easy replacement from the front of the panel. Lamps shall have translucent lamp covers to diffuse lights and coloured Red, green, Amber, clear white or blue as specified. The lamp cover shall be of screwed type, unbreakable and mounded from heat resisting material. The indicating lamps with resistors shall withstand 120% of rated voltage on a continuous basis. The colour scheme of the signal lamps shall be as follows:
ANNUNCIATOR: It may be 18, 20 or 24 Window annunciator suitable for the visual and audible alarm annunciation shall be provided on the control panel. These shall be micro processor based units using bright LEDs. Annunciator facia units shall have translucent plastic windows for each alarm point. The annunciation shall be divided into the following categories: i) Trip annunciation. ii) Non Trip annunciation. Each annunciator shall be provided with 'Accept', 'Reset' and 'Test' push buttons, coloured red, yellow and blue respectively.
SEMAPHORE INDICATORS: When semaphore indicators are used for equipment positions, they shall be mounted in the mimic, such that the equipment closed position shall complete the continuity of the mimic.
Semaphore indicators shall be provided for isolators and breakers.
PUSH BUTTON SWITCHES:Push button switches, provided where required, shall be of the monetary contact type wired back connected. They shall be semi flush mounted. They shall be provided with integral inscription plates engraved with their functions. All push buttons shall be with a set of NO/NC contacts as required to fulfill the scheme requirement.
TRIP CIRCUIT SUPERVISION SCHEME: Trip circuit supervision scheme shall be such that testing of trip circuit healthiness is possible irrespective of whether the C. B. is in the closed or open position. The Trip Circuit Healthy LED should glow continuously in CB ‘ON’ Position and on demand in C.B. ‘OFF” position. The rating of dropping resistance in series with Trip Circuit Healthy LED shall be such that the Trip Coil should not get damaged because of continuous current flowing through it.
MASTER TRIP RELAYS: The trip relays shall be high speed, hand reset type. The relay shall have heavy duty contacts suitable for tripping function. Relay shall have minimum 2NO + 2NC contacts.
LOCAL BREAKER BACK UP PROTECTION: The protection scheme shall be so designed that if any circuit breaker fails to trip in the event of a fault, then after a short time delay all the adjacent circuit breakers connected in the same bus will be tripped. The relay shall – a) be triple pole type. b) have a operating time less than 15millisecond. c) have an resetting time less than 15millisecond.
d)
Trip all the breakers on the particular bus in a One & Half breaker system, when any bus breaker fails to trip in faulty condition. However, when a Tie Breaker fails to open, the LBB relay shall trip the adjacent bus breakers as well as both the breakers at the remote end of the bays
TEST BLOCK: Switch Board type, back connected, test blocks with contacts shall be provided with links or other devices for shorting terminals of CT leads before interrupting the normal circuit for injection from external source or for inserting testing instruments in the circuit without causing open circuit of the CT. The potential testing studs shall preferably be housed in block molding insulation and partition shall be provided to prevent
accidental short circuit across the studs. Test blocks for meters, relays shall be placed in front and rear panel respectively.
HOOTER:Hooter is an electronic siren.
SPACE HEATERS: Space heater suitable for connection to the single phase AC supply in each panel complete with switches and thermostat located at convenient position shall be provided at the bottom side of the cubicle to prevent condensation of moisture. The watt loss per unit surface temperature of the heater shall be low enough to keep surface temperature well below allowable heat. The wattage of the heater shall be such as to keep 10 C above average ambient temperature in the rainy season but the temperature shall not under any circumstances damage the insulation of the wiring of the panel. Capacity Voltage required Type
80W 230V AC Strip type
THERMOSTAT: a device that automatically regulates temperature, or that activates a device when the temperature reaches a certain point.
AMMETER: Each circuit one ammeter and associated selector switch shall be provided. Mounting Size Response time Operating temperature Dielectric strength Frequency Operating current Type
Flush 48 x 96 sq. mm. case 1 Second Up to 55°C 2KV RMS for 1 minute 50Hz 1 A from CT secondary. Panel mounting with 31/2 Digital Display
AMMETER SELECTOR SWITCH: Ammeter Selector switch shall be a four-position (3 way with off) rotary type with R, Y, B and 'OFF' positions marked clearly on 48x48 mm brushed aluminium plate with black handle. Rated insulation voltage 1100V Rated impulse withstand voltage 6KV Rated operational current 12 A
VOLT METER: Mounting Size Response time Operating temperature
Flush 48 x 96 sq. mm. case 1 Second Up to 55°C
Dielectric strength Auxiliary supply Frequency Operating Voltage Type
2KV RMS for 1 minute 110V 50Hz 110V from PT secondary. Panel mounting with 31/2 Digital Display
VOLT METER SELECTOR SWITCH: Voltmeter Selector switch shall be a four-position (3 way with off) rotary type with RY, YB, BR and 'OFF' positions marked clearly on 48x48 mm brushed aluminium plate with black handle. Rated insulation voltage 1100V Rated impulse withstand voltage 6KV Rated operational current 12 A
BREAKER CONTROL SWITCH: Breaker control Switches are specially designed for remote tripping and closing of circuit breakers, and recommended wherever severe frequent operation are required and to eliminate the possibility of coil burnout with two consecutive closing operations.
LOCAL/REMOTE:A Remote/Local control selector switch can often be situated in proximity to the controlled plant [i.e. LOCAL to the equipment] and allow an operator to take control locally and avoid the need to interact or accept remote supervisory commands. Switching the Selector to REMOTE allows the equipment to be controlled REMOTELY from a SCADA Master Station.
TRI-VECTOR ENERGY METER: Trivector meter is a measuring instrument which measures the kW, kVAr, the kVA of a power line. These instruments can measure both power as well as energy. Trivector meters are normally used in substations and to measure the power flowing through the feeders. They are used for billing power drawn by industrial customers. The Trivector enables the simultaneous measurement of different electrical parameters which enables accurate assessment of the power consumed.
MULTI-FUNCTION METER: MFM displaying voltage, current, real power (MW), Reactive power (MVAR), Scada communicable.
Aux. supply Size Type Mounting Display
230V AC 144×144sqmm. Static Flush Customized backlit liquid crystal display
The meters shall have digital display unit. The digits shall be clear and bright. The unit shall have number of digits not less than six (6). The meter shall be direct reading type, that is, without involving any external multiplying factor. It shall be possible to programme the meter, at site, to suit the actual CT & PT ratios. However, inadvertent resetting/ changing of the selected CT/PT ratio shall be prevented through suitable software or hardware interlock. Feather-touch push buttons shall be provided on the meters for enabling selection of various system parameters to be read. The parameter being displayed shall be identified on the display unit. Normal scroll mode shall also be available, and the parameters to be displayed shall be programmable. Meters shall have non-volatile memory using EEPROM so as to retain the recorded parameters during power failure/ storage. In case the meter is having built-in self-chargeable type battery back up to support the retention of energy recording during storage/aux. supply failure, the same shall have a life not less than 10 years.
The meter shall be tamper-proof, having suitable locking arrangement. Locking by method of password may also be offered to prevent tampering by un-authorized persons.
DIRECTIONAL OVERCURRENT RELAY: Directional overcurrent relaying (67) refers to relaying that can use the phase relationship of voltage and current to determine direction to a fault. There are a variety of concepts by which this task is done. This paper will review the mainstream methods by which 67 type directional decisions are made by protective relays. The paper focuses on how a numeric directional relay uses the phase relationship of sequence components such as positive sequence (V1 vs. I1 ), negative sequence (V2 vs. I2), and zero sequence (V0 vs. I0) to sense fault direction, but other concepts such as using quadrature voltage (e.g., VAB vs Ic) are included.
DISTANCE PROTECTION RELAY: There is one type of relay which functions depending upon the distance of fault in the line. More specifically, the relay operates depending upon the impedance between the point of fault and the point where relay is installed. These relays are known as distance relay or impedance relay. Types of Distance or Impedance Relay There are mainly two types of distance relay1. Definite distance relay. 2. Time distance relay.
80DC SUPERVISION RELAY: This type of relay is used to supervise the DC supply. The relay coil terminals 1 & 2 are connected to the DC supply, which is to be monitored. In case, the DC auxiliary supply is available, the relay’s ‘NO’ contact closes and healthy status is indicated through ‘WHITE’ flag. In the absence of the DC auxiliary supply, the same is indicated through ‘RED’ flag.
EARTHING ARRANGEMENTSAll control and relay panels shall be provided with copper earth bar of a sectional area of not less than 150 mm2run along the bottom of the panels with provisions at each end to be connected to the adjacent panel and can be joint together to form a common bus. Common earthing bus thus formed shall be connected to the station earthing system via copper earthing connection of size not less than 185 mm2. The common earthing of earth bus inside panels will be at two locations to earth grid. Metal cases of instruments and metal bases of relays on the panels shall be
connected to this bar by conductors of a sectional area of not less than 2.5 mm2.
3. CERTIFICATION:
MPMKVVCL MPPKVVCL CSPTCL CSPDCL CPRI Major Discom’s & Transco of India
4. CLASSIFICATION: Designing and manufacturing of Control and Relay panel depend on the requirement of utilities and these can broadly be classified as follows; -
Line Protection Transformer Protection Bus Bar Protection Tie Breaker Bus Coupler Reactor
5. SCHEMES:
66KV transformer protection type Scada or non Scada scheme 66KV line protection type Scada or Non Scada schemes. 33KV single feeder protection schemes. 11KV capacitor bank protection schemes
PROCEDURE: 66KV TRANSF0RMER PROTECTION (SCADA OR NON SCADA) INTERFACING SHEET S.NO
PANEL T.B.
FERULE
ACTION
1
X1:1
J1
DC +VE
2
X1:2
J2
DC –VE
3
X1:3
-
SPARE
4
X1:4
H1
AC-PH
5
X1:5
H2
AC-NE
6
X2:1
D11
CT-3 METERING (R-PHASE)
7
X2:2
D31
CT-3 METERING (Y-PHASE)
8
X2:3
D51
CT-3 METERING (B-PHASE)
9
X2:4
D71
CT-3 METERING (NEUTRAL)
10
X2:5
E11
PT-1 METERING (R-PHASE)
11
X2:6
E31
PT-1 METERING (Y-PHASE)
12
X2:7
E51
PT-1 METERING (B-PHASE)
13
X2:8
E71
14
X2:9
C11
15
X2:10
C31
16
X2:11
C51
17
X2:12
C71
PT-1 METERING (NEUTRAL) CT-2 MAIN PROTECTION RPHASE CT-2 MAIN PROTECTION YPHASE CT-2 MAIN PROTECTION BPHASE CT-2 MAIN PROTECTION
NEUTRAL CT-1 BACKUP PROTECTION RELAY R-PHSASE CT-1 BACKUP PROTECTION RELAY Y-PHASE CT-1 BACKUP PROTECTION RELAY B-PHASE CT-1 BACKUP PROTECTION RELAY NEUTRAL SPARE
18
X2:13
C15
19
X2:14
C35
20
X2:15
C55
21
X2:16
C75
22
X2:17
-
23
X2:18
-
24
X2:19
1E13
25
X2:20
1E33
26
X2:21
1E53
27
X2:22
1E73
28
X2:23
-
SPARE PT-2 BACKUP RELAY R-PHASE PT-2 BACKUP RELAY Y-PHASE PT-2 BACKUP RELAY B-PHASE PT-2 BACKUP RALAY NEUTRAL CT-4 SPARE R-PHASE
29
X2:24
-
CT-4 SPARE Y-PHASE
30
X2:25
-
CT-4 SPARE B-PHASE
31
X2:26
-
CT-4 SPARE NEUTRAL
32
X2:27
-
PT-3 SPARE R-PHASE
33
X2:28
-
PT-3 SPARE Y-PHASE
34
X2:29
-
PT-3 SPARE B-PHASE
35
X2:30
-
36
X3:1
1K1
37
X3:2
1K2
38
X3:5
1K13
PT-3 SPARE NEUTRAL BREAKER AUX + SUP. & CLOSING CKT BREAKER AUX - SUP. & CLOSING CKT REMOTE CLOSE
39
X3:6
1K15
TRIP CKT-1 REMOTE TRIP
40
X3:8
1K19
TRIP CKT-1 SUPERVISION
41
X3:9
2K1
TRIP CKT-2 +SUPPLY
42
X3:10
2K2
TRIP CKT-2 –SUPPLY
43
X3:11
2K3
TRIP CKT-2 REMOTE TRIP
44
X3:13
2K7
TRIP CKT-2 SUPERVISION
45
X3:14
K201
CB SUPERVISION +SUPP.
46
X3:15
K203A
CB AIR PRESS. LOW ALARM
47
X3:16
K205A
CB SF6 LOCK OUT
48
X3:17
K207A
CB SPRING CHAREGE
49
X3:18
L1
INDICATION CKT +SUP.
50
X3:19
L3
BREAKER OPEN
51
X3:20
L5
BREAKER CLOSE
52
X3:21
L7
SPRING CHAREGE
53
X3:22
L9
SMP-1 OPEN
54
X3:23
L11
SMP-1 CLOSE
55
X3:24
L15
FAULT AUTO TRIP
56
X4:1 ,X4:4
L1
INDICATION +SUPPLY
57
X4:2
L17
SMP-2 OPEN
58
X4:3
L19
SMP-2 CLOSE
59
X4:5
L21
SMP-3 OPEN
60
X4:6
L23
SMP-3 CLOSE
61
X4:7
L1
INDICATION +SUPPLY
62
X4:8
L25
SMP-4 OPEN
63
X4:9
L27
SMP-4 CLOSE
EQUIPMENTS USED : 1. SINGLE PHASE RELAY TEST KIT 2. THREE PHASE RELAY TEST KIT 3. MULTIMETER TEST CONDUCTED AFTER INTERFACING :1. CONNECTION TO AUXILLARY (DC)220V
22.
S.No 1
CONNECTION TO AUXILLARY (AC)-230V
Test on panel Lamp test & Semaphore test.
Procedure 1. By making short path between X3:18 to X3:19. 2. By making short path between X3:18 to X3:20.
1. X1:1 – >+VE 2. X1:2 –> -VE 3. X1:3 –> PHASE 4. X1:4 –> NEUTRAL Result or indication GREEN lamp will glow, it Shows breaker open.
RED lamp will glow, it shows Breaker close.
3. By making short path between X3:18 to X3:21
Blue lamp will glow, it shows Spring charge.
4. By making short path
Semaphore-1 indication will move to open side.
between X3:18 to X3:22 5. By making short path between X3:18 to X3:23 6. By making short path between X3:18 to X3:23 7. By making short path between X3:18 to X3:24. 8. By making short path between X4:1 to X4:2. 9. By making short path between X4:1 to X4:3. 10. By making short Path
Semaphore-2 indication will move to close side. Amber lamp will glow, it shows fault auto trip.
Semaphore-2 indication will move to open side.
Semaphore-2 indication will move to close side.
Semaphore-3 indication will move to open side.
Semaphore-3 indication will move to close side.
Semaphore-4 indication will move to open side.
Semaphore-4 indication will move to close side.
between X4:4 to X4:5. 11. By making short Path between X4:4 to X4:6. 12. By making short Path between X4:7 to X4:8. 13. By making short Path between X4:7 to X4:9. 2
DC under voltage test
By decreasing DC Input Supply upto 180V
3
DC fail test
By making DC supply fail.
4
AC fail test
Make AC supply fail.
6
Trip ckt-1 healthy
Making short path
In annunciator, dc under voltage lamp will glow and hooter starts making sound. Fault led glowDC fail led glowbuzzer sound. In annunciator, AC fail lamp will glow and hooter starts making sound. In annunciator, trip ckt-1
test
between X3:2 to X3:8.
faulty lamp lightening will off, and by pressing PB-4, L6 (white) will glow. 95A will show healthy.
Trip ckt-2 healthy test
Making short path between X3:10 to X3:13
In annunciator, trip ckt-2 faulty lamp lightening will off, and by pressing PB-5, L7 (white) will glow. 95B will show healthy.
7
Metering
By using three phase relay test kit, giving CT, PT to the panel.
8
BCS TEST
L/R switch set to remote position.
All meters start showing reading. i.e. Ammeter, Voltmeter, MVAR, MW, MFM,TVM
Making short path between X3:2 to X3:8, X3:10 to X3:13. 1. On giving close Command from Switch ( -ve terminal of lamp
BCS gives close command to the lamp, lamp will glow .
connect with X3:2 & +ve terminal with X3:5) 2. On giving trip Command from Switch ( -ve terminal of lamp connect with X3:2 & +ve terminal with X3:6 for trip ckt1 and X3:11for trip ckt-2)
BCS gives open command to the lamp, lamp will glow .
9
CB Supervision Test On making short In annunciator, CB Air path between X3:14 Pressure Low Alarm lamp will to X3:15 glow and hooter starts making sound. On making short path between X3:14 In annunciator, CB SF6 LOCK to X3:16 OUT lamp will glow and hooter starts making sound. On making short path between X3:14 In annunciator, CB Spring to X3:17 Charge lamp will glow and hooter starts making sound.
10
Main protection rel. On giving current by Hooter start making sound, earth fault test using CT wire in b/w In annunciator, distance X2:9 to X2:12( protection relay operate lamp
phase to neutral)
Over current test.
11
will glow, MTR & LBB will trip.
On giving current b/w phase to phase by using CT (X2:9 to X2:10) Backup protection On giving current relay earth fault test b/w phase to neutral by using CT
Hooter start making sound, In annunciator, distance protection relay operate lamp will glow, MTR & LBB will trip. Hooter start making sound, In annunciator, directional protection relay operate lamp will glow, MTR & LBB will trip.
Over current test
Hooter start making sound, In annunciator, directional protection relay operate lamp will glow, MTR & LBB will trip.
On giving current b/w phase to phase by using CT
7. REFERENCES/BIBLIOGRAPHY
www.aartechsolonics.com www.mahadiscom.com www.wbsetcl.in www.selectswitches.net www.electrical4u.com www.stelmac.com
8. APPENDIXDAY
DATE
1.
5th July 2017
2.
6th July 2017
3.
7th July 2017
4.
8th July 2017
TASK PERFORMED 1. Introduction and interaction with the heads of SSD’s (system solution division). 2. Got to know about the Company Profile and how it works. 1. Studied about BUCK AND BOOST CONVERTOR. 1. Introduced to company’s objective and also to various products as follows: BTS (Bus transfer system) CRP(Control and relay panel) Ultracapacitors 1. Visited company’s shop floor and got familiar with different Machineries and work process.
5. 6.
7.
8.
9. 10.
11. 12.
9th July 2017 10th July 2017
11st July 2017
12th July 2017
13th July 2017 14th July 2017
15th July 2017 16th July 2017
SUNDAY 1. Got introduced to company’s major product “bus transfer system” also studied basic concept of BTS. 2. Got overview of 2 breaker BTS along with its modes, transfer directions and initiations. 1. Read IEEE papers on CRP 2. Learned about the importance of CRP in substations. 1. Studied about equipments used in panels. 2. Learned panel scheme. List out all machineries used in Aartech. Get to know about basics of Ultra capacitors, its usage and advantages. Studied about Ultra capacitors its basic concept and its applications. SUNDAY
13.
14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26.
17th July 2017
18th July 2017 19th July 2017 20th July 2017 21st July 2017 22nd July 2017 23rd July 2017 24th July 2017 25th July 2017 26th July 2017 27th July 2017 28th July 2017 29th July 2017 30th July 2017
1. Learn testing process of CRP. 2. Attended CRP testing. See how wiring is done in panel. Mounting of instrument on panels. See CNC, sharing, & bending machine how they work. Start doing testing on 66KV Line CRP Panel Testing perform on 66KV line Scada CRP Panel SUNDAY Testing perform on 66KV Line CRP scada Panel Testing perform on 66KV Line non scada CRP Panel Testing perform on 66KV Line non scada CRP Panel Testing perform on 66KV Line non scada CRP Panel Start doing testing on 66KV transformer Scada CRP Panel Testing perform on 66KV transformer CRP scada Panel SUNDAY
31th July 2017
27. 28. 29. 30.
1th August 2017 2ndAugust 2017 3rd August 2017 4th August 2017
31. 32.
5th August 2017
Testing perform on 66KV transformer CRP scada Panel Testing perform on 66KV transformer CRP non scada Panel Testing perform on 66KV transformer CRP non scada Panel Testing perform on 33KV single feeder CRP Panel Testing perform on 11KV capacitor bank CRP Panel Testing perform on 66kv transformer non scada CRP panel
9. CONCLUSION1. Made for protection of switchgear 2. Actual analysis. 3. Fast sensing fault. 4. These panels are used for the control & monitoring of electrical Equipments such as transformers, generators and circuit breakers.
10. GLOSSARYAdjustable Alarm Level – A setting on a protection relay at which an LED or an output contact operates to activate a visual or audible alarm. Adjustable Time Delay – A setting on a protection relay that determines the time between the fault detection and relay operation. Alarm Relay Contact – The output of the relay that acts as a switch and is connected to a visual or audible alarm. Analog Output– A 0–1 mA, 4–20 mA or 0–5 Vdc signal from a protection relay used to pass information to a device or controller. Current Transformer (CT) – A transformer that produces a current in its secondary circuit in a known proportion to current in its primary circuit. CT Loop – The electrical circuit between a current transformer and a protection relay or monitoring device. CT Loop Monitoring– Continuous check of CT loop continuity to verify connection. CT Saturation – A condition that occurs when a
current transformer (CT) cannot maintain a secondary current proportional to a large primary current. CT Local Saturation – Poorly installed phase conductors and large currents can cause an output from a zero-sequence (ground-fault) CT even though there is no fault. Current-Based Protection – Protection parameters (trip-levels/data collection etc.) derived from current levels in a circuit. Current-Trip Setting– Selectable level of current at which a relay will operate. EFCT (Earth Fault Current Transformer) –A current transformer engineered to accurately detect low level ground-fault current. The words earth fault and ground fault are used interchangeably. Feeder– All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch-circuit over current device. Motor Lockout– A condition where for safety Reasons, the operator is prevented from starting the
motor. Motor Protection – Overload protection designed to protect the windings of a motor from high current levels. Modern motor protection relays add many additional features, such as metering, data logging and communications. N.C. Contact (Normally Closed Contact) – Relay contact that is closed when the relay is not energized. N.O. Contact (Normally Open Contact) – Relay contact that is open when the relay is not energized.
Relay – An electrical switch that opens and closes a contact (or contacts) under the control of another circuit. Relay Operating Mode – Fail-safe or non-fail-safe methods of operation used for under voltage or Shunt trip breakers.
