RURAL ELECTRIFICATION
Course Objectives:
To present a summary of rural livelihood and to present the basic concepts of rural electrification and its impact upon the development of rural communities
- Rural livelihood and Social, cultural and human factors in development (4 hours)
- Components of rural livelihood and livelihood indicators
- Social, cultural and human factors in development
- Industrialization and urbanization
- Electricity and rural development (4 hours)
- Rural electrification– National objectives, targets and key players (National Water Plan)
- Impact of electrification on rural and village life
- End use of electricity
- Rural electrification technologies– Nepalese context (8 hours)
- Grid based rural electrification
- Utility operated: Voltage levels, Investment modality, Construction and operation modality, Consumer services, tariffs
- Community operated (CBRE, CBOM etc): Voltage levels, Investment modality, Construction and operation modality, Consumer services, tariffs
- Electrification through Isolated hydropower stations
- Micro Hydro components (Civil, Mechanical and Electrical components including T&D network)
- Electrification through alternative energy sources
- Solar (Components of Solar Home system)
- Wind (Components of Wind Power)
- Environmental concerns, safety considerations and reliability indices in RE (8 hours)
- Environmental concerns in rural electrification
- Equipment and human safety in construction and operation of Rural electrification network as per Electricity regulation Nepal
- Plant factor of Micro Hydro Schemes, load factor, load curve and reliability indices in Rural Electrification, SAIFI, SAIDI, CAIDI, ASAI
- Design of Rural Electrification network (10 hours)
- Load points fixation in contour map and load calculation
- Transformer installation point and Line route fixation
- Selection criteria of distribution system– single or three phase
- Hardware in RE Networks: Poles and supporting accessories, Conductors and Fixtures (Cross arm, clamps etc), Insulators, Transformers, HT Metering units, Energy Meters, Current limiters, Service wire, Power cables, Isolators, Load break switches
- Protection system of RE Networks :
- 11/33 kV Feeder protection: Lightning arrestors, Circuit breakers with tripping provision on Over current, Short circuit, Earth Fault
- LV feeder protection: ACBs, MCCBs, HRC/Kitkat fuses
- Transformer (33/0.4 and 11/0.4 kV) protection: Lightning arrestors, Drop out fuses, MCCBs/ HRC fuses
- Load flow diagram preparation and Voltage drop calculation: kVA‐km conductor loading / Voltage drop calculation
- Economic analysis of RE
- RE Network operation (10 hours)
- Load management: Load switching, Load shedding, Peak load tariff
- Energy loss measurement and monitoring
- Load curve, Load factor, loss factor and Energy Loss calculation
- Metering and measurement
- Condition monitoring of RE network components: Poles, Jumpers, Insulators, Transformers, Distribution boxes, Clearances, Feeder loading
- Types of faults frequently occur in RE Network
- Correction, Corrective action and preventive actions
- Metering, Billing and revenue collection
- Inventory management
Practical:
- Case studies in rural electrification
- Technical Aspects
- Energy loss of the network
- Quality of the service provided– Voltage, frequency and interruption frequency and duration
- Condition monitoring and Repair and maintenance of RE network
- Economic Aspects
- Revenue generation
- Operating expenses
- Capital Investment
- Profitability of the scheme
- Social Aspects
- Energy based Enterprise development
- Energy based Income Generation activities introduced
- Impact on social life – Health, education, security, communication
A report to be produced by each student on case study.
References:
- AS Pabla Electric Power Distribution TATA McGRAW HILL
- Bhjendra Aryal Cultural and human factors in Rural development Dikshant Prakashan
- AEPC/ESAP Guideline for detailed feasibility study for projects from 100 kW to 1000 kW
- Electricity regulation 2050, Nepal
- National water Plan, Nepal
- Samudayik Bidyut bitran niyamawali 2060, NEA
- ISO 9001 standard
- AEPC status/progress reports on renewable energy
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