Zigbee Wireless Monitoring for Photovoltaic Inverter Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Household photovoltaic systems face operational inefficiencies, high costs, and poor communication quality when using power line carrier communication techniques for monitoring data, due to low anti-interference capabilities and limited distance and networking capabilities.
Innovation Solution
The implementation of a wireless communication assembly using Zigbee technology, including central nodes and remote nodes, to transmit monitoring data from DC-side and AC-side monitoring assemblies to a monitoring terminal, enhancing data communication and monitoring capabilities across a wide range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power line carrier communication technique is used to monitor photovoltaic inverter output data, then real-time monitoring is achieved, but communication quality deteriorates due to low anti-interference capability and high transmission noise
Solution Approach 1:
The patent replaces the power line carrier communication technique (electrical signal transmission through power lines) with wireless communication technology. This substitution eliminates the interference sources inherent in power line communication, such as electrical noise and signal distortion, while maintaining real-time data transmission capability for monitoring photovoltaic inverter output data.
2Area of stationary object
If power line carrier communication technique is used for monitoring, then system coverage is achieved, but system cost increases due to limited distance and networking capability
Solution Approach 1:
The patent changes the communication parameter from power line carrier frequency to wireless communication frequency bands, enabling broader coverage area and better networking capability. This parameter change allows the system to cover larger distances and more devices without increasing system cost, as wireless communication infrastructure is more scalable and flexible than power line carrier networks.
3Ease of operation
If power line carrier communication technique is used, then existing power lines are utilized for communication, but ease of operation deteriorates due to inconvenient system configuration and maintenance
Solution Approach 1:
The patent extracts the communication function from the power line infrastructure and implements it as a separate wireless communication system. This extraction allows the communication system to be configured and maintained independently from the power distribution system, significantly improving ease of operation. The wireless communication modules can be installed, configured, and maintained without interfering with power line operations, and vice versa.
Data Source
AI summary
The present disclosure provides a household photovoltaic system and a smart micro-grid system. The household photovoltaic system includes a photovoltaic assembly module, a household photovoltaic inverter and an AC grid. The household photovoltaic system further includes a monitoring assembly and a wireless communication assembly. The monitoring assembly includes DC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the photovoltaic assembly module, and AC-side monitoring assemblies each configured to monitor an operating parameter of an output end of the household photovoltaic inverter. The wireless communication assembly includes a DC-side wireless communication assembly and an AC-side wireless communication assembly which are configured to transmit the operating parameters monitored by each DC-side monitoring assembly and each AC-side monitoring assembly to a predetermined monitoring terminal.