About this previous year paper
POWER THEFT AND ENERGY MANAGEMENT (NEE014)
Section-wise Solved Answers & Notes
SECTION – A (10 × 2 = 20 Marks)
Very short answers (2 marks each)
(a) Different Energy Sources
Energy sources are classified as: Conventional: Coal, oil, natural gas
Non-conventional: Solar, wind, biomass, tidal, geothermal
(b) Renewable and Non-Renewable Energy Sources
Renewable: Sources that can be replenished naturally (solar, wind)
Non-renewable: Exhaustible sources (coal, petroleum)
(c) Power Theft
Power theft is the illegal consumption of electricity by tampering meters, illegal connections, or bypassing billing systems.
(d) Harmonics in Power System
Harmonics are distorted voltage or current waveforms having frequencies that are multiples of the fundamental frequency.
(e) Meaning of Energy Audit
Energy audit is a systematic analysis of energy consumption to identify wastage and improve efficiency.
(f) Good Power Quality
Good power quality means stable voltage, current, frequency, and minimal harmonics or interruptions.
(g) Security Seals
Security seals are tamper-proof devices used in meters to prevent unauthorized access or manipulation.
(h) Principles of Energy Conservation Avoid wastage
Improve efficiency Use efficient equipment
Optimize energy use
(i) Energy Management and Audit
Energy management involves planning, monitoring, and controlling energy use, while audit identifies improvement opportunities.
(j) Strategies of Energy Security Diversification of energy sources
Renewable energy adoption Efficient energy usage
Strategic reserves
SECTION – B (Any 5 × 10 = 50 Marks)
(a) Ways to Improve System Efficiency Reduce transmission & distribution losses
Use energy-efficient equipment Power factor improvement
Regular maintenance Automation and smart monitoring
(b) Industrial & Commercial DSM Practices Load shifting
Energy-efficient lighting Efficient HVAC systems
Peak demand control Smart metering
(c) Ways to Reduce Rising Power Theft Smart meters
Strong legal enforcement Regular inspections
Public awareness Anti-tamper technology
(d) Energy Security
Energy security ensures reliable, affordable, and sustainable energy supply to meet present and future needs.
Importance: Economic stability
National security Industrial growth
(e) Motive Behind Demand Supply Management
Reduce peak demand Improve grid reliability
Lower energy costs Optimize resource utilization
(f) Energy System Maintenance Terms Preventive maintenance
Predictive maintenance Breakdown maintenance
Condition monitoring
(g) Ways and Types of Power Theft Direct tapping from lines
Meter tampering Bypassing meters
Billing manipulation Illegal connections
(h) Demand Side Management (DSM)
DSM is the modification of consumer energy usage patterns to improve efficiency.
Scope of DSM: Load reduction
Peak clipping Valley filling
Load shifting
SECTION – C (Any 2 × 15 = 30 Marks)
Q3. Problem of Power Theft (Explanatory Note)
Power theft is a major challenge in developing countries. It causes:
Revenue loss to utilities Poor power quality
Overloading of systems Increased tariffs for honest consumers
Solutions: Smart grid technologies
Legal enforcement Consumer awareness
Advanced metering infrastructure
Q4. Load Management Programs
Load management programs aim to control and optimize electricity demand.
Types: Peak clipping
Load shifting Valley filling
Strategic conservation
Benefits: Reduced peak load
Improved grid stability Cost savings
Q5. Demand Side Management (DSM) & Strategies
DSM: Planned activities to influence consumer demand pattern.
DSM Strategies: Energy-efficient appliances
Time-of-day tariffs Demand response programs
Consumer awareness