Power Line Communication Systems for Smart Grid Applications
Summary
Power Line Communication (PLC) exploits existing power distribution networks to carry data alongside electrical energy, offering a cost-effective overlay for Smart Grid monitoring, control and automation. PLC systems are broadly classified into narrowband and broadband solutions: narrowband PLC operates at lower frequencies (3 kHz–500 kHz) for low-rate telemetry and control, while broadband PLC (1.8 MHz–250 MHz) supports high-rate applications such as firmware updates and multimedia services. Key advantages include ubiquitous coverage, no requirement for new cabling and inherent integration with metering and distribution infrastructure. PLC enables Advanced Metering Infrastructure (AMI), real-time demand-side management, fault detection and integration of distributed energy resources and electric vehicles. Technical challenges stem from the grid’s harsh channel characteristics: frequency-selective attenuation, time-varying impedance mismatches, background and impulsive noise, and network topology diversity. Solutions at the physical layer embrace robust modulation, adaptive equalisation and impedance-matching networks, while higher-layer approaches deploy cooperative relaying, multiple-access schemes and network coding. Standardisation efforts (including IEEE 1901.2, ITU-T G.hn/G.hnem, G3-PLC and PRIME) underpin interoperability and harmonise performance metrics. Recent trends focus on enhancing spectral efficiency, resilience to impulsive disturbances, and security at the physical layer, ensuring reliable bidirectional links for global Smart Grid deployments and future microgrid architectures.
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Power Line Communication Systems for Smart Grid Applications publication trend
The graph below shows the total number of articles in power line communication systems for smart grid applications across all publications each year (not limited to Nature Index journals).
Technical terms
Smart Grid: An electricity network enhanced with two-way communication and automation for improved reliability, efficiency and integration of renewable energy.
Power Line Communication (PLC): Data transmission technology that uses existing electrical power lines as the communication medium.
Narrowband PLC: PLC operating at low frequencies (up to a few hundred kilohertz), suited to low-rate telemetry and control.
Broadband PLC: PLC operating at high frequencies (above 1 MHz), supporting higher-rate services such as firmware updates and multimedia.
Non-Orthogonal Multiple Access (NOMA): A multiple-access technique allowing simultaneous transmission to multiple users by superimposing signals at different power levels.
Impulsive Noise: Short-duration, high-amplitude interference often arising from switching operations and electrical devices, presenting a major challenge in PLC channels.
Advanced Metering Infrastructure (AMI): Integrated system of smart meters, communication networks and data management for automated meter reading and energy management.
References
- Power Line Communications for Smart Grid Applications. Journal of Electrical and Computer Engineering (2013).
- The Role of Power Line Communications in the Smart Grid Revisited: Applications, Challenges, and Research Initiatives. IEEE Access (2019).
- Three-User Cooperative Dual-Stage Non-Orthogonal Multiple Access for Power Line Communications. IEEE Open Journal of the Communications Society (2023).
- Modelling impulsive noise in indoor powerline communication systems. Signal, Image and Video Processing (2020).
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