THEORY EXAMINATION (SEM–VI) 2016-17 POWER THEFT AND ENERGY MANAGEMENT

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