Auto. generates connection relationships and cable list for RS485 in PV power station

RS485, as a stable and cost-effective communication Type, is still widely used in the communication between inverters or combiners and loggers, especially in the communication between DC combiners and loggers. In the process of connecting devices using RS485, there are generally the following restrictions: In the actual design process, we usually have some optimization and constraint conditions: Based on the above constraints, we employ the Depth-First Search (DFS) algorithm to traverse various possible combination plans, selecting the optimal plan that meets the aforementioned conditions. The connection relationship of a single power block 485 typically cost around 1 second, significantly enhancing design efficiency and optimizing the 485 connection plan. Case 1 (Qty. of devices allowed per circuit: 3-6) Case 2 (Qty. of devices allowed per circuit: 4-7) 485 detailed list Summary This paper introduces the connection principles and restrictions of RS-485 communication in photovoltaic power station. Based on these principles and conditions, Candela3D software…

Optimization of MV Collection Cables in Large Photovoltaic Power Stations

The large-scale Shagehuang photovoltaic base project generally utilizes 35kV cables to gather the power output from the local step-up transformers of each power block to the substation. As the cost of a 35kV cable per meter is several hundred currency, and the usage amount is approximately 200km/GW, the total cost reaches around 50 million currency per GW (with significant regional variations), making it one of the key points for cost control. The optimization of a 35kV cable route involves at least two aspects: To this end, based on the Depth-First Search (DFS) algorithm, this paper proposes a systematic solution centered around the allowable cable length between transformers, with the goal of minimizing total cost or shortening the total path. This solution has been implemented in Candela3D software. Workflow Practical case The following three types of Aluminum alloy cables are used in the setting. The cable section is automatically selected by the…

Generate cable bridge pile function

When using cable trays for cable laying in applications such as the integration of fishing and photovoltaic power generation, due to the limitation on the span of the support piles of the trays, it is necessary to not only fully utilize the existing pile foundations of the racks but also to additionally increase the number of tray piles where the support span exceeds the set value. The Candela3D software can automatically generate cable tray stakes based on the settings. The settings interface is as follows: As shown in the figure below, Red represents the existing pile foundation of the Rack, while Green represents the automatically generated pile foundation of the Cable tray. As shown in the figure below, the software can automatically draw the coordinates of the cable tray stakes into CAD.

Candela3D’s synchronization feature between 3D models and CAD 2D drawings

In the actual design and constructions, due to factors such as changes in owner requirements and site condition constraints, various layout adjustment scenarios are frequently encountered, for example: For the above scenarios, Candela3D's upcoming "Synchronization with CAD" feature enables real-time bidirectional data synchronization and interaction between Candela3D 3D models and CAD 2D drawings, achieving precise synchronization and discrepancy verification of key design elements such as array layout and polylines. This completely eliminates the cumbersome process of manual comparison and adjustment, significantly improving the efficiency of solving adjustment-related issues in photovoltaic project settings. 1. Compare the differences in the layout of the arrays between the 3D Model and the 2D drawing in real-time, and synchronize the arrayspositon Scenario 1: Addition or deletion of arrays in skp or dwg files, synchronizing arrays position Scenario 2: Add some arrays of a new type in dwg and synchronize them to skp Scenario 3: Checking the tag differences of…

Improvement of automatic power block division

Dividing power blocks is a very time-consuming design task and also a difficult aspect of software development. Regarding the implementation algorithm for automatically dividing power block functions, if readers can propose innovative ideas, please leave a comment below the article, and we will contact you. In version 3.8.2, we have optimized this feature as follows: 1. Users can choose the number of columns to be divided 2. More potential solutions have been added, and the sorting algorithm has been optimized 3. Optimized the automatic direction division for some alignment projects

Frame selection to determine the removal direction, Reset plan to automatically prompt the quantity of missing and supplementary items, combining manual and automatic methods, multiple new features accelerate the speed of electrical connection divide

Electrical connection divide occupies a considerable amount of workload in design work. Fully automatic divide sometimes makes it difficult to obtain ideal results. In the 3.8.2 version of Candela3D software, the following new functions have been added to help users speed up the process of electrical connection divide: 1. Press Frame selection to confirm the direction of removal 1) Select "Continuously dividing" and "Frame selection orientation (up/down)" 2) When selecting by box, the corresponding removal type is: 1: Down right, 2: Down left, 3: Up right, 4: Down left When selecting by box, the orientation is left/right, and the corresponding removal type is: 1: bottom right, 2: bottom left, 3: top right, 4: top left The operation video is as follows: 2. Reset plan automatically tips the quantity needed for replenishment 2) When the software adopts the Automatic equalization Type, it automatically prompts the quantity of strings that should be…

Improvement of automatic wiring

Automatic wiring is a very time-consuming design task and also a difficult point in software development. Regarding the implementation algorithm for the automatic wiring, if readers can propose innovative ideas, please leave a comment below the article, and we will contact you. In version 3.8.2, we have optimized this feature as follows: 1. Users can choose the number of columns to split 2. More potential solutions have been added, and the sorting algorithm has been optimized 3. Optimized the automatic direction division for some alignment projects

Place arrays on Terrace

When arranging PV arrays on terraced fields, the orientation of each array is not exactly the same, and effective connection between adjacent arrays is required, which significantly increases the difficulty of design. Candela3D software has improved the layout of terraced fields in version 3.8. Users can choose to arrange them with a back slope or facing south, or follow the prompts to arrange them all; For areas with poor automatic layout effect, users can manually draw the layout centerline for layout. The layout effect is as follows: 1. Arrange Selected PV zones 2. Fill all 3. Manual placing

Array Statistics by Pitch

Pitch is one of the key aspects in the review of item design. For photovoltaic projects with complex terrain, reviewers often require designers to provide an array count table by pitch for the items. This feature can facilitate the quick completion of this task. 1. Calculate Array pitch Select "Array analysis" → Statistics by pitch, the pitch between each array is clear at a glance. 2. Pitch Count Array Right-click menu →Count, where you can customize the start number, end number, and interval for counting, and even edit the counting range yourself. 3. Export Excle table

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