Photovoltaic String Layout to Minimize Cable Use and Rework
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Solution Overview
Problem
The efficiency of manually designing string connections for photovoltaic modules in photovoltaic power stations is low due to repeated modifications, leading to potential errors and inefficiencies in cable usage.
Innovation Solution
A method and apparatus that acquire position information of photovoltaic modules, categorize them into partitions, generate candidate connection solutions, calculate estimated cable use amounts, and select the most efficient connection solution based on these calculations, using a computer device to automate the process and reduce manual errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual design method is used for string connecting photovoltaic modules, then flexibility in design is maintained, but design efficiency is low due to repeated modifications
Solution Approach 1:
The patent replaces the manual mechanical design process with an automated computer-based system. The computer automatically calculates optimal string connection schemes, cable lengths, and cable usage based on photovoltaic module positions, eliminating the need for repeated manual modifications and significantly improving design efficiency.
Solution Approach 2:
The system enables self-service by allowing the computer to autonomously perform the entire string connection design process. The computer automatically inputs module position data, calculates connection schemes, determines cable requirements, and generates design outputs without requiring continuous human intervention or repeated manual adjustments.
2Manufacturing precision
If manual design method is used for string connecting photovoltaic modules, then design flexibility is maintained, but connection accuracy and integrity are compromised
Solution Approach 1:
The patent replaces manual calculation and design processes with automated computer-based calculations. The computer precisely calculates cable lengths, string connection configurations, and cable usage based on exact module position data, ensuring high connection accuracy and complete integrity without human error.
3Adaptability or versatility
If photovoltaic modules are connected with longer cable distances between positive and negative poles, then connection flexibility is increased, but cable usage amount increases
Solution Approach 1:
The patent changes the optimization parameter from purely connection flexibility to a balanced objective function that considers both connection flexibility and cable usage minimization. The computer calculates multiple possible connection schemes and selects the optimal one that achieves adequate flexibility while minimizing total cable length and cable usage.
Data Source
AI summary
Disclosed are a method and an apparatus for string connecting photovoltaic modules. The method includes: acquiring position information of n photovoltaic modules to be connected; categorizing the n photovoltaic modules into m partitions based on the position information of the n photovoltaic modules; generating k candidate connection solutions of an ith partition in the m partitions, wherein the ith partition includes m photovoltaic modules, and each of the k candidate connection solutions uses one photovoltaic module in the m photovoltaic modules as a starting point, and obtaining at least one string of photovoltaic modules by simulating connection of the m photovoltaic modules according to a preset connection solution; and selecting a target connection solution from the k candidate connection solutions based on an estimated cable use amount corresponding to each of the k candidate connection solutions.