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Collaborative 3D Digital Design Solution Saves CNY 6.2 Million on 220-kV Transmission Line

Collaborative 3D Digital Design Solution Saves CNY 6.2 Million on 220-kV Transmission Line
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Collaborative 3D Digital Design Solution Saves CNY 6.2 Million on 220-kV Transmission Line - 1

Advancing Infrastructure Project Summary Organization POWERCHINA Hubei Electric Engineering Corporation Limited Solution Utilities Transmission and Distribution Location Xianning, Hubei, China Project Objectives • To implement 3D digital design processes to improve design quality and efficiency. • To reduce design time by 10 percent and review time by 15 percent. • To minimize impact to the surrounding infrastructure and environment. Project Playbook OpenBuildings™ Designer, Bentley Substation, ContextCapture, LumenRT, MicroStation®, Navigator, ProjectWise®, STAAD.Pro® Collaborative 3D Digital Design Solution Saves CNY 6.2 Million on 220-kV Transmission Line Bentley BIM and Reality Modeling Technology Avoids Demolition of Six Homes, Reduces Environmental Impact Fast Facts • HEEC used Bentley technology to establish a 3D digital design platform for delivery of the CNY 33.2 million Cha'anling-Xiaojiazhou 220-kilovolt transmission line. • The team used ContextCapture to create reality meshes for four line corridors, minimizing impact on existing infrastructure and the environment. Bentley applications facilitated design of a new tower shape that reduced tower weight by 1.2 percent and saved steel materials. Working in a coordinated digital design environment optimized line routing and reduced design time by 12 percent and verification time by 16 percent. Improved Power Supply Infrastructure Ranked among China's top 100 engineering, procurement, and construction contractors with power generation and new energy projects spread across the globe, POWERCHINA Hubei Electric Engineering Corporation (HEEC) was commissioned to design and construct the 220-kilovolt Cha'anling-Xiaojiazhou transmission line in Hubei, China. Connected to the existing Cha'anling substation, the transmission line will provide power to the newly built Xiaojiazhou substation. "Construction of this project will improve the power grid structure in the Cha'anling area and enhance power consumption quality for 350,000 customers in Jaiyu county," stated Liang Zhang, engineer at HEEC. The CNY 33.2 million transmission line required demolition of an existing tower, construction of two new towers, and a line routing that crosses numerous residential houses, two highways, one 110-kilovolt line, and one 220-kilovolt line. The project needed to reduce the effect the design had on the surrounding environment, minimizing impact on nearby homes and accommodating large-scale industrial plants. To improve design quality and efficiency, HEEC implemented a 3D digital design solution using Bentleys integrated BIM and reality modeling applications. Reality Modeling Optimizes Line Route To design the line route, HEEC first needed to understand the context of the area infrastructure and existing site conditions. HEEC used ContextCapture to simulate four line corridors, all of which took building interference and the surrounding terrain into account. The team used unmanned aerial vehicles (UAVs) to capture 3,000 vertical and oblique images spanning 5.5 square kilometers of the project site. Bentley software generated reality meshes for the routing areas to ensure precise design within the urban environment setting. HEEC was able to verify the feasibility of demolishing the old line and tower with ContextCapture, and the organization used the original position to set up a new rod and tower. The reality meshes facilitated a criss-cross design scheme for the line to cross two highways, one 220-kilovolt line, and one 110-kilovolt line, improving safety of construction, operation, and maintenance. More specifically, Bentleys reality modeling application enabled HEEC to reduce the route length across the Qichun-Jiayu Expressway segment of the line by 0.15 kilometers while increasing the vertical distance from the expressway, enhancing safety along the roadway. HEEC avoided the demolition of six houses and realized an optimal route design that reduced overall environmental impact. Finally, the interoperability of Bentley technology produced accurate georeferenced 3D models that can be directly loaded to a GIS platform to fully optimize the layout of circuit paths and can be used to subsequently generate a model that meets the State Grid's digital transfer standards. Integrated Applications Facilitate Coordinated Design HEEC relied on the interoperability of Bentley's 3D BIM and reality modeling applications to implement a collaborative digital design strategy. Using the combined modeling solution, the team generated a 3D geological model to perform load calculation and construction simulation that optimized assembly of the foundation and improved construction efficiencies. With OpenBuildings™ Designer (formerly AECOsim Building Designer) and MicroStation®, HEEC

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Collaborative 3D Digital Design Solution Saves CNY 6.2 Million on 220-kV Transmission Line - 2

"Construction of this project will improve the power grid structure in the Cha'anling area and enhance power consumption quality for 350,000 customers in Jaiyu county." - Liang Zhang, engineer, POWERCHINA Hubei Electric Engineering Corporation Limited Find out about Bentley at: www.bentley.com Contact Bentley 1-800-BENTLEY (1-800-236-8539) Outside the US +1 610-458-5000 Global Office Listings www.bentley.com/contact modeled the towers, electric power fittings, and insulator strings, and they imported the models into STAAD.Pro for stress analysis to ensure optimal conductivity and complete...

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