## 2 Literature Review
The integration of various security methods is also evaluated, and a case study is shown to illustrate the implementation of a distributed network security communication system in a microgrid environment. Finally, the research emphasizes ongoing work and proposes potential future research directions in the field of microgrid communication [12]. However, narrowband interference in the power line channel makes it impossible to perceive the interference position and adjust the carrier frequency in real time, leading to low spectrum utilization. Compared with the chaotic encryption method in smart grid  
Complexity Enhancement: Existing chaotic encryption methods in smart grids typically employ one-dimensional or basic two-dimensional chaotic systems (e.g., logistic mapping or two-dimensional logistic mapping). While demonstrating chaotic properties, these systems exhibit relatively limited dynamic behavior complexity and key space. The proposed method substantially enhances system complexity and unpredictability through generalized two-dimensional polynomial chaotic mapping with configurable control parameters and adjustable maximum polynomial degrees, thereby strengthening encryption key security and crack resistance. Enhanced Anti-interference Capability: Conventional chaotic encryption methods often prove ineffective against power line channel impairments, including strong noise, multipath fading, and time-varying characteristics, frequently resulting in elevated bit error rates. This work addresses these limitations by integrating an autoregressive moving average model to analyze transmission fluctuations, enabling dynamic key adaptation that effectively mitigates channel noise and signal attenuation while enhancing communication stability and reliability. Network Construction and Optimization: Traditional smart grid communication networks frequently suffer from suboptimal connectivity and transmission efficiency considerations, leading to increased communication latency. The proposed solution employs a power line carrier routing algorithm based on minimal connected dominating sets to intelligently select critical nodes for optimal path formation, significantly improving network transmission efficiency and stability. Compared with chaotic encryption methods in WSN environment  
Adaptability and Flexibility: Existing chaotic encryption methods in WSN environments primarily emphasize low power consumption and simplicity, often proving inadequate for complex, dynamic network environments requiring adaptive encryption strategies. The proposed method addresses both encryption security and dynamic adaptation, automatically adjusting encryption keys and routing algorithms according to power line channel variations, thereby enhancing communication flexibility and environmental adaptability. Key Generation and Management: Traditional WSN chaotic encryption methods frequently employ static or predefined key generation mechanisms, struggling to accommodate network topology changes and channel condition variations. This work introduces transmission fluctuation deviation-based dynamic key generation, ensuring both real-time key updates and robust security while effectively preventing key cracking or reuse. Transmission Efficiency and Reliability: Conventional chaotic encryption approaches in WSNs often sacrifice transmission quality due to energy and computational constraints. The proposed solution simultaneously achieves high-volume, real-time data transmission and maintains communication reliability/integrity through optimized routing algorithms and encryption strategies. In summary, the generalized two-dimensional polynomial chaotic mapping-based secure transmission method outperforms existing smart grid/WSN chaotic encryption techniques across multiple dimensions: system complexity, anti-interference capability, network optimization, adaptability/flexibility, key management, and transmission efficiency/reliability.