Closed-Loop Energy Collection Circuit for Renewable Projects
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Solution Overview
Problem
Large-scale renewable energy projects face significant costs and energy losses due to complex energy collection systems with multiple voltage levels, which increase as project capacity grows, affecting the economics of the project.
Innovation Solution
An optimized energy collection system with a closed-loop electrical circuit design, utilizing radial and primary connections with medium voltage cables, and a simplified network structure to reduce costs and enhance efficiency, allowing for larger solar or wind power blocks and lower maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple voltage level networks are used to handle large amounts of energy in large-scale renewable projects, then the energy collection system can accommodate higher project capacity, but the system complexity and cost percentage of balance of system increases
Solution Approach 1:
The energy collection system is divided into multiple independent feeding arrangements, each handling a specific voltage level (LV, MV, HV, EHV). Each feeding arrangement operates autonomously with its own transformer and circuit breaker, allowing the system to manage large project capacity while maintaining modularity and reducing overall system complexity.
Solution Approach 2:
The patent introduces a hierarchical dimension to the electrical network by organizing feeding arrangements in multiple voltage levels (LV→MV→HV→EHV). This dimensional organization allows energy from distributed generation units to be progressively transformed and aggregated, enabling the system to handle large-scale power transmission without requiring a single complex high-voltage network.
2Power
If multiple voltage level networks are used to handle large amounts of energy, then the energy collection system can accommodate higher project capacity, but the cost percentage of balance of system increases
Solution Approach 1:
The system uses standardized feeding arrangement modules that can be replicated across different voltage levels. Each module contains a transformer, circuit breaker, and associated equipment configured in a consistent manner, enabling economies of scale and reducing per-unit costs while accommodating larger project capacities.
Solution Approach 2:
The feeding arrangement design is universal and can be applied across all voltage levels (LV, MV, HV, EHV) with appropriate equipment scaling. This multi-functionality reduces the need for level-specific custom designs, thereby reducing overall balance of system cost percentage while maintaining the ability to handle various project capacities.
3Power
If a complex energy collection system with multiple voltage levels is used, then large-scale energy collection is enabled, but energy losses increase
Solution Approach 1:
The system segments energy collection into multiple feeding arrangements operating at different voltage levels, allowing energy to be transformed and transmitted at optimal voltages for each segment. This reduces transmission losses by matching voltage levels to power levels, with lower voltage for smaller power and higher voltage for larger power aggregation.
Solution Approach 2:
The hierarchical voltage transformation system ensures continuous and efficient energy flow from generation units through progressive voltage levels to the main transmission network. Energy is continuously transformed from LV to MV to HV to EHV without interruption, minimizing losses through optimized transformation stages rather than single-step transformation.
Data Source
AI summary
There is provided an energy collection system comprising a first switching station electrically connected to a first set of one or more transformation units for receiving a first electrical power generated thereby; a second switching station electrically connected to a second set of one or more transformation units for receiving a second electrical power generated thereby; a sub-transmission station having a first primary electrical connection with the first switching station and a second primary electrical connection with the second switching station for receiving the first and second electrical powers; and a secondary electrical connection between the first and second switching stations; wherein the secondary electrical connection and the first and second primary electrical connections form, alone or using further connections, a closed-loop electrical circuit between the first switching station, the second switching station and the sub-transmission station. There is also provided a method of enhancing collection of electrical power in an energy collection system.