Low-Voltage Feed-In Control with Redundant Node Supervision
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Solution Overview
Problem
Low-voltage networks with numerous nodes face challenges in reliable communication and data delivery, leading to network instability and the need for frequent deactivation and reactivation of controllers due to asynchronous measurement data and communication failures, making uninterrupted control and maintenance inefficient.
Innovation Solution
Implementing a redundant control system with at least two control stages that collect and prioritize network data, allowing parallel operation and seamless switching between stages in case of failures, with a supervisor module that forwards control commands based on data quality and availability, ensuring continuous network coordination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple network nodes are manually installed and configured, then network coverage and functionality are improved, but installation time and maintenance complexity increase significantly
Solution Approach 1:
The control stages automatically perform self-configuration and self-monitoring functions. The system autonomously collects network data, detects communication failures, and switches between control stages without manual intervention, eliminating the need for manual installation and configuration of each network node.
Solution Approach 2:
Multiple control stages are merged into a single coordinated system where control stages 3a and 3b work together with supervisor 1. This consolidation allows the system to manage multiple network nodes through unified automated control rather than individual manual configuration.
2Device complexity
If measurement data is transmitted via low-throughput connections, then network infrastructure requirements are reduced, but data delivery becomes highly asynchronous and unreliable
Solution Approach 1:
Control stages continuously monitor and collect network data in advance, maintaining ready-to-use data buffers. When communication failures occur, the system has pre-collected data available for immediate control decisions, eliminating the need for high-throughput connections while ensuring reliable and timely data delivery.
Solution Approach 2:
The system implements redundant control stages that serve as backup buffers. If primary data transmission paths fail, alternative control stages with pre-collected data can take over, cushioning against communication failures without requiring high-throughput infrastructure.
3Reliability
If controllers are deactivated and reactivated during maintenance or communication failures, then system stability is compromised, but controller reliability is maintained
Solution Approach 1:
Control stages continuously collect and buffer network data in advance, maintaining ready-to-use data sets. This preliminary data collection allows controllers to operate uninterrupted during maintenance or communication failures, as pre-buffered data can be used for control decisions without deactivation.
Solution Approach 2:
The redundant control stage architecture enables continuous control operation. If one control stage experiences communication failures or requires maintenance, the other control stage continues operating without interruption, maintaining both controller reliability and network stability simultaneously.
4Device complexity
If a single control stage is used, then system complexity is reduced, but the system becomes vulnerable to communication failures and lacks redundancy
Solution Approach 1:
Each control stage is designed with specialized local functions - control stage 3a receives overall network data while control stage 3b receives data from specific network nodes. This local specialization allows the system to maintain reduced overall complexity while achieving redundancy through differentiated control functions.
Solution Approach 2:
The system implements partial redundancy with two control stages that don't fully duplicate each other's functions. Control stage 3b monitors specific network nodes while 3a handles overall network data, providing sufficient redundancy for reliability without the excessive complexity of complete duplication.
Data Source
AI summary
The invention relates to a method for controlling a voltage feed into a low-voltage network using overall network data (4) which are obtained from the low-voltage network, which has numerous network nodes. At least two redundant control stages (3a, 3b), which are each assigned to a network node and are supplied with different network data (4a, 4b) of the low-voltage network, with a supervisor (1) connected in such a way that it forwards control commands (6) for voltage supply based on the input-side control commands (5a, 5b) of a redundant control stage (3a or 3b).