Course No: 1 13 (3 Days) FAULT CURRENT CALCULATION & RELAY SETTING & RELAY CO-ORDINATION. Course Content

Transcription

1 Course No: 1 13 (3 Days) FAULT CURRENT CALCULATION & RELAY SETTING & RELAY CO-ORDINATION Sr. No. Course Content 1.0 Fault Current Calculations 1.1 Introduction to per unit and percentage impedance 1.2 Fault Level Calculation Procedure 1.3 Short Circuit Contribution of Equipment a) Generator b) Induction Motor 1.4 Sample System For Study and Fault Level Calculation (3ø to Ground ) 1.5 Unbalanced Faults a) Shunt Faults b) Series Fault 1.6 Resistance Grounded System a) NGR Sizing b) High Resistance Grounding...2/-

2 2.0 Relay Setting and Relay Co-ordination 2.1 Introduction a) What is Relay Co-ordination? b) Stages in Fault Clearance c) Relays Only One Part of Protective Gear Family d) Role of Relays e) Why Relay Co-ordination? 2.2 NEMA Device Numbers 2.3 Primary & Back-up Protection 2.4 Zones of Protection 2.5 Need for Co-ordination 2.6 Properties of Protection Scheme a) Sensitivity b) Selectivity c) Speed 2.7 Discrimination Time (Co-ordination Interval) a) Factors Affecting Discrimination time...3/-

3 b) Empirical Formulas for Co-ordination Time 2.8 Introduction to IDMT Characteristic 2.9 Difference Between Overload and Overcurrents 2.10 Settings PS, PSM and TMS 2.11 Application of DMT-IDMT Characteristic 2.12 Application of Instantaneous Over Current (50) 2.13 Application of Instantaneous Earth Fault Relay (50N) 2.14 Tools available for Reducing Fault Clearance time 2.15 Typical Relay Setting & Co-ordination Exercise Note :Planning is done for the above course content. However, depending upon the participants, their interest, their interaction and time management, there can be some specific addition / deletion or some topics may remain incomplete. The course content is not binding, it is subject to changes by the faculty. x.x.x G:\TRAINING\2013 TRAINING\Course Content\1.0 FC_RC.doc Rev.R0 as on dated

4 Course No: 2 13 (3 Days) CAPTIVE POWER PLANT (CPP) & GRID PARALLEL OPERATION PLANNING AND ENGINEERING (INCLUDING GRID ISLANDING & LOAD SHEDDING SCHEME) Sr. No. Course Content 1.0 Planning Of CPP Electrical System 1.1 Study : Fault Level a) Case Study : Petrochemical Plant With CPP 1.2 Study : Power Scenario a) Case Study 1.0 : Cement Plant With CPP b) Case Study 2.0 : Fluorochemical Plant With CPP 2.0 Engineering Consideration While Planning CPP 2.1 Selection Of Generator Voltage Rating V/S Selection of Generator MVA Rating V/S Switchgear Rating 2.2 Selection Of Transformer Vector Group...2/-

5 2.3 Cable Size Adequacy Check for Generator + Grid Parallel Operation 2.4 Generator Protection a) Where CT Shall be Mounted For Short Circuit Protection b) For Grid + CPP Parallel Operation 2.5 Review Phase Over Current Relay Characteristics and Relay Co-Ordination 2.6 Review of Earth Fault Protection System 2.7 Selection of Configuration Of CPP and Grid Source System V/S Source Of Grounding 2.8 Generator Neutral Grounding Practices 2.9 Recommended Practice For Grounding Of Generator Neutral as per IEEE Generator & Grid Parallel Operation 3.1 Stability Classification : Rotor Angle & Voltage Stability 3.2 Stability : Simplified Concepts 3.3 Power Transfer 3.4 Critical Clearance Time (CCT)...3/-

6 3.5 Unit Control : (P - F) & (Q - V) Loop 3.6 Problems in Interconnected Grid Operation in India 3.7 Types of Disturbances 3.8 Symptoms Before Islanding 4.0 Grid Islanding Scheme 5.0 Load Shedding Scheme 6.0 Role of PLC In Modern GIS/LSS Scheme 7.0 Reasons for GIS Failures 8.0 Checklist for Successful islanding Note: Planning is done for the above course content. However, depending upon the participants, their interest, their interaction and time management, there can be some specific addition / deletion or some topics may remain incomplete. The course content is not binding, it is subject to changes by the faculty. x.x.x G:\TRAINING\2013 TRAINING\Course Content\2.0 CPP and Grid parallel operation.doc Rev.R0 as on dated

7 Course No: 3 13 (2 Days) INSTRUMENT TRANSFORMER (CT s, PT s) SELECTION & APPLICATION Sr. No. Course Content 1.0 Current Transformer (CT) 1.1 Difference between Current Transformers and conventional transformers 1.2 Equivalent circuit and phasor diagrams 1.3 Why CT Can t Be Open Circuited While Primary Is Energised 1.4 Errors in Current Transformers a) Ratio Error b) Phase Angle Error c) Composite Error 1.5 Accuracy Limit Factor of Current Transformer 1.6 Voltage developed across CT Secondary 1.7 CT ratio 1.8 Relay Burden on CT...2/-

8 1.9 CT Winding Arrangement & classification based on application, a) Bar Primary CT b) Wound Primary CT 1.10 Number Of Cores a) Metering Class b) General Protection Class c) Special Protection (PS) Class d) MV CT s Equipotential Leads 1.11 List of Parameters For CT Specification 1.12 Other Applications of Auxiliary CT s 2.0 Potential Transformer (PT) 2.1 Difference Between Conventional Transformer & PT 2.2 Errors in PT a) Ratio Error b) Phase Angle Error 2.3 Voltage factor of PT...3/-

9 2.4 PT Connections 2.5 PT ratio 2.6 Rated Burden Of Each Secondary Winding 2.7 Classification based on application, a) Metering Class b) Protection Class 2.8 Protection of PT 2.9 Voltage Balance Scheme for Both HT & LT Fuse Failure 2.10 List of Parameters for PT specification 3.0 Typical Calculation for CT-PT ratings Note : Planning is done for the above course content. However, depending upon the participants, their interest, their interaction and time management, there can be some specific addition / deletion or some topics may remain incomplete. The course content is not binding, it is subject to changes by the faculty. x.x.x G:\TRAINING\2013 TRAINING\Course Content\3.0 CT-PT.doc Rev.R0 as on dated

10 Course No: 4 13 (3 Days) PROTECTION RELAY, SELECTION AND APPLICATION FOR POWER EQUIPMENT Sr. No. Course Content 1.0 Protective Relay Selection 1.1 Selection of Protection Function 1.2 Application & Selection of relay Characteristics 1.3 Characteristic Selection Against Electrical Distribution System a) Select Relay Characteristic b) Configuration c) System Operation d) Equipment & System Operating Condition e) System and Equipment Parameters f) Method of Source Grounding 2.0 Type of Faults 2.1 Statistics Of Electrical Fault in Power System...2/-

11 2.2 Transient Faults 2.3 Persistent Faults (Permanent Fault) 3.0 NEMA Device 4.0 Effects of Source Grounding on Protection Selection 4.1 Reasons For Grounding 4.2 Solid Grounding 4.3 Resistance Grounding 5.0 Significance of Principles of, 5.1 Primary and Backup Protection 5.2 Properties of Protection Schemes for Protection Selection 6.0 Selection and Application of Relay Characteristics 7.0 Selection and Application of, 7.1 Transformer Protection 7.2 Transformer Differential and REF Protection 8.0 Selection and Application of Generator Protection 9.0 Selection and Application of Motor Protection...3/-

12 10.0 Selection and Application of Busbar Protection 11.0 Selection & Application of Feeder Protection, 11.1 Parallel Feeder Protection 11.2 Ring Main Protection 11.3 Feeder Differential Protection 12.0 Transmission Line Protection Note :Planning is done for the above course content. However, depending upon the participants, their interest, their interaction and time management, there can be some specific addition / deletion or some topics may remain incomplete. The course content is not binding, it is subject to changes by the faculty. x.x.x G:\TRAINING\2013 TRAINING\Course Content\4.0 PRSAT.doc Rev.R0 as on dated

13 Course No: 5 13 (2 Days) CONDITION MONITORING OF CAPITAL POWER EQUIPMENTS Sr. No. Course Contents 1.0 What is Condition Monitoring Testing. 2.0 What is Diagnostic Testing. 3.0 Insulation & its properties 4.0 Specialized condition monitoring tests on rotating machines / Transformers 4.1 Capacitance and tan delta testing 4.2 Partial Discharge Testing 4.3 ELCID Testing 4.4 Recurrent Surge Oscillograph Test 4.5 Sweep Frequency Response Analysis Test. 5.0 Routine Tests : 5.1 Insulation Resistance / Polarization Index Measurement 5.2 DC winding Resistance Measurement...2/-

14 5.3 AC Impedance Measurement. 5.4 Turns Ratio Measurement. 5.5 Excitation Current Measurement. 6.0 Recommended Tests For 6.1 Generators / Motors. 6.2 Transformers. 6.3 EHV / HV C.T s / CVT s Condition Monitoring Testing of Power Cables by Very low frequency method ONLINE Testing Of Lighting Arrestors by Leakage Current Measurement Instrument Transformers Testing ( CT s / PT s ) by Partial Discharge Measurement Case Studies. Note :Planning is done for the above course content. However, depending upon the participants, their interest, their interaction and time management, there can be some specific addition / deletion or some topics may remain incomplete. The course content is not binding, it is subject to changes by the faculty. x.x.x G:\TRAINING\2013 TRAINING\Course Content\5.0 CM of CPE.doc Rev.R0 as on dated