Traditional energy transition: 3D visualization of digital twin smart thermal power plants

Foreword

Thermal power plants meet nearly 50% of the world's electricity demand, and more than half of China's electricity comes from thermal power generation. With the implementation of the dual-carbon policy, under the national demand for clean energy consumption and environmental protection, higher requirements have been put forward for thermal power plants in terms of deep peak shaving, ultra-low emissions, and flexible operation. At the same time, production safety and security monitoring are also top priorities in the industrial field. The traditional management model urgently needs to be transformed and develop towards an intelligent, digital, safe, and green smart power plant.

Through HT visualization technology digital twin operating thermal power plants, a digital operation platform is built to carry out factory-style and refined digital management of power plants, and to enhance the company's ability to digitally manage the entire power plant business.

effect display

HT supports multiple modes of model rendering, adopts lightweight 3D modeling technology, digital twin thermal power plant 1:1 high simulation simulation, based on 3D scenes, supplemented by 2D data panels, digitally displays the construction and operation of various regions of thermal power plants Situation, safety equipment, surrounding dynamic environment, etc. It also supports importing BIM model files in IFC format to generate scenes, and supports rendering oblique photography model files in 3D Tiles format. Through HT, an interactive Web three-dimensional scene can be realized, which can be zoomed, translated, and rotated, and each device in the scene can respond to interactive events.

HT 3D visualization technology adopts the B/S architecture. Users can access the 3D visualization system anytime and anywhere through PC, PAD or smart phone, as long as they open a browser to realize remote monitoring and control. Through the combination of the B/S architecture and the lightweight model, the HT 3D visualization technology firstly reduces the pressure of users on purchasing high-performance hardware to a certain extent, and secondly breaks the limitations of the previous management scenarios where users manage in the monitoring room.

Smart production

The case is based on a coastal coal-fired power plant as a prototype, equipped with 4×660MW supercritical coal-fired generating units. Through the combination of data transmission technology, the plant operation information and the operation status of key equipment on the site are displayed in real time in the scene, allowing plant operation and maintenance personnel to monitor the plant production information in real time through the HT visualization large screen for comprehensive and efficient management.

The factory information panel on the left side of the big screen displays the main information of this project, including: factory information and business information. Among them, operating information can view real-time cost, revenue, and profit dynamic trend graphs.

The right side shows the number of safe production days, recording the cumulative time of safe production in the plant area. Equipment operating efficiency and production information jointly monitor the real-time operating efficiency and operating parameters of boilers and turbo-generator sets.

By clicking on the smart production function at the bottom, the animation effect is used to simulate the production process scene of a thermal power plant, and a series of production processes of coal transportation, storage, transportation, combustion, and power generation are visually displayed. The text description and its main characteristics are provided with a sense of science and technology. The realistic visual effects allow users to clearly understand the operation of smart thermal power plants.

HT visualization adds the animation effects of drone roaming perspective and first-person perspective to show users a more transparent and intuitive full scene of smart thermal power plants.

"Smart production" is a concrete manifestation of smart grid in the field of production. Through the Tupu software visualization platform, the information of thermal power plants, equipment, machinery, and personnel is integrated and displayed to create a smart factory management system with comprehensive perception, comprehensive coverage, comprehensive visibility, and comprehensive control. Lay a solid foundation for building a "safe, reliable, green and efficient" power grid and comprehensively improving quality and efficiency.

Smart Security

Personnel positioning

This case is based on the UWB positioning base station or other positioning hardware foundation, and realizes the real-time positioning visualization function of the employees in the factory in the three-dimensional scene. A visual management system is deployed in the centralized control center. Managers can monitor the location of the employees in the factory in real time, and can intuitively view employee information, contact information, and movement trajectory data through scene interaction.

The positioning card device carried by the staff can send out SOS alarm information by manual operation. If on-site personnel encounter a dangerous situation, the information will be fed back to the alarm record of the security interface for the first time, and the staff of the centralized control center can respond as soon as they receive the call for help.

The personnel quick navigation function supports querying and locating all online personnel. You can also browse the list of offline personnel to help managers find them quickly.

On the one hand, the personnel positioning function helps to mobilize and command on-site personnel and strengthen overall management; on the other hand, it helps to monitor the behavior trajectory and safety information of employees and strengthen safety management. It complements the weak links and existing threats of the existing systems in the plant area, improves the timeliness and accuracy of enterprise operation decision-making, improves the enterprise's intelligence level and operating efficiency, and provides a strong guarantee for the safe and stable operation of the enterprise.

Electronic fence

Electronic fence is currently a more advanced perimeter protection and alarm system. The electronic fence host adopts the advanced perimeter security concept of "blocking first, alarming second", integrating "deterrence, blocking, alarm, and safety". Fences are usually divided into permanent fences and temporary fences. In thermal power plant projects, permanent fences generally appear in areas such as steam turbines, transformers, and booster stations; temporary fences often appear in temporary construction or "two-ticket" maintenance areas in the plant area. .

Enterprises can freely set the alarm types according to the production situation, such as the alarm types such as shifting, detention, overcrowding, missing employees, intrusion, and standing overtime. Based on the support of HT for Web's lightweight scene modeling and personnel positioning function, once a person who is not authorized by two tickets enters the fence area, the alarm information will be displayed in the fence violation record and available for query, thus ensuring the safety of the staff .

Intelligent monitoring

In the three-dimensional scene of the plant, video surveillance points are set indoors and outdoors, and their locations are displayed with obvious icons. This case uses monitoring equipment that supports the identification of personnel behaviors, which can capture and alert violations such as wearing helmets, dressing work clothes, and making calls, and record them in the camera alarm record. The monitoring points with alarm information will have obvious alarm effects, and managers can click to view real-time monitoring images and snapshot records in time. Integrate equipment alarm information of various subsystems, and display all alarm information in the visualization system.

Compared with the traditional two-dimensional monitoring system, the interface of the three-dimensional scene is more intuitive and simple, which is convenient for the monitoring personnel to identify abnormal information and improve the monitoring efficiency. Through the three-dimensional scene, the user can clearly see the location of the camera in the factory. It is also possible to use emerging video fusion technology to seamlessly embed video into the scene to truly restore the real scene of the scene.

Process flow

Thermal power plants are abbreviated as thermal power plants, which are factories that use combustibles (such as coal) as fuel to produce electricity. Its basic production process is: when the fuel burns, the water generates steam, which converts the chemical energy of the fuel into heat energy. The steam pressure drives the steam turbine to rotate, and the heat energy is converted into mechanical energy. Then the steam turbine drives the generator to rotate and converts the mechanical energy into electrical energy.

The simplified method of three-dimensional configuration is adopted to realize the equipment connection in the key technological process of the power plant. On the one hand, it can monitor the operation information of important equipment; on the other hand, it uses an intuitive straight-line process to show the main power generation process of the coal-fired power plant: coal transportation Trestle→Coal Screen→Coal Crusher→Coal Conveyor Belt→Coal Feeder→Coal Mill→Boiler→Steam Turbine→Generator→Main Transformer→Booster Station→Grid...

The main equipment for the production process of coal-fired power plants includes boilers, steam turbines, and generators.

By completing the conversion of chemical energy → thermal energy → mechanical energy → electric energy, a continuous supply of electricity is provided to the grid.

The boiler is a heat exchanger, which is mainly composed of a furnace, a water wall, a superheater, an economizer, and an air preheater.

The raw coal is processed into a form suitable for modern power boiler combustion (such as grinding coal into very fine coal), and then sent to the boiler with the help of hot air for full combustion, so that the chemical energy stored in the fuel is converted into heat energy; After the water absorbs heat, it becomes saturated steam under a certain pressure, and the saturated steam continues to be heated into superheated steam in the superheater.

A steam turbine is a device that converts thermal energy into mechanical energy, and a generator is a device that converts mechanical energy into electrical energy.

The superheated steam from the boiler successively enters the high-pressure turbine, intermediate-pressure turbine, and low-pressure turbine of the steam turbine, expands in the steam turbine to perform work, drives the turbine generator set to rotate, and converts the internal energy of the steam into mechanical energy for the rotation of the turbine generator set rotor system; When the rotor rotates, the magnetic field formed by the excitation current in the generator rotor also rotates, so that the magnetic flux interlinked by the stator coils periodically changes, and an induced electric potential is generated in the stator coils to generate electrical energy.

Most of the electrical energy generated by the generator is boosted by the main transformer, and supplied to the outside through high-voltage power distribution devices and high-voltage transmission lines. A small part of the electrical energy generated by the generator is referred to as factory electricity for the factory's own use.

As a particularly important system on the periphery of thermal power plants, the coal handling system has always provided fuel for power plant boilers and is an important guarantee for the operation of the power plant. In the traditional mode, the coal handling system has its own independent control room, and only in this control room can real-time monitoring of the entire system be realized, and its limitations can be imagined. The entire coal conveying line not only covers a large area and has a long conveying distance, but also has restrictions on the height of the equipment. The traditional two-dimensional configuration screen can no longer display it clearly and intuitively.

Through HT visualization to build a full-coverage visualization scenario with no blind spots in the complex environment of thermal power plants, in-depth development and application of intelligent power generation control technology, to enhance the comprehensive capabilities of power generation enterprises such as intelligent management and control, intelligent operation, intelligent safety monitoring, intelligent analysis and remote diagnosis, and build a future-oriented Innovative management and operation mode of smart coal-fired power generation.

In the next issue, we will also introduce the smart mine management and control platform built through HT to help the joint innovation and development of coal mining and the power industry.

Summary

With the current upgrading of energy consumption dual control policies in many places, many provinces have introduced power curtailment measures of varying intensity. Power cuts are not only an energy shortage problem, but are also affected by factors such as the national dual control policy and environmental protection. The goal of "dual control of energy consumption" is to promote clean, low-carbon, safe and efficient use of energy, and also to promote the adjustment and upgrading of the industrial structure and energy structure of some high-energy-consuming industries.

For thermal power generation, this is an era in urgent need of transformation.

Innovation and technology play an increasingly important role in the field of power generation. The comprehensive application of advanced technologies such as GIS technology, big data, Internet of Things, 5G and visualization will bring greater benefits to thermal power plants, photovoltaic power plants, and wind power plants. The value enhancement of the power generation industry solves the deep-seated problems that plague the power generation industry. The in-depth application of digital technology has opened up data barriers, realized data sharing, and enabled the power industry to achieve in-depth integration with digitalization. Smart power generation has become an inevitable trend to comprehensively improve the operating efficiency of the power system, adapt to China's power system reform, and promote the energy revolution. The following is a visualization case of Tupu Software in multiple industries:


(More cases can be viewed on the official website)

In China, coal power has an absolute advantage in both installed capacity and power generation, but there is huge room for new energy sources such as wind power and photovoltaics to replace coal power. In the future, new energy and thermal power will continue to be interdependent, and power companies may usher in both profit and valuation repairs. New energy may usher in a period of double-speed development, but it also needs energy storage to reduce costs.

Smart carbon

With the emergence of many problems in energy management and control, the "virtual power plant" has also played an important role.

What is a virtual power plant? A virtual power plant, as its name implies, is a virtualized power plant. It is not a power plant but functions as a power plant. Relying on the Internet and modern information and communication technology, it integrates distributed power, energy storage, loads and other resources scattered on the grid to achieve The overall energy supply efficiency of cold, heat and electricity is maximized, and coordinated and optimized operation control and market transactions are carried out to provide auxiliary services to the power grid and play a flexible role in peak shaving and valley filling.

In the future, virtual power plants will solve the problem of large-scale power storage, realize energy transformation and provide more solutions. It will play an important role in improving China's power market system, achieving power diversification, and solving energy and environmental issues. And through the HT visualization large screen, data analysis, energy management and control, personnel scheduling and other issues can be more centralized management, which promotes the efficient operation and maintenance of virtual power plants.

HT visually empowers the intelligent manufacturing and digital transformation of the industry, enables traceable management of industrial operation and maintenance, enables monitoring and management of equipment operation, and enables all things to be "interconnected". The HT visual management system comprehensively enhances the intelligent level of operation and maintenance management, and takes the realization of comprehensive intelligence such as perception, decision-making, and management as the criterion, improves the enterprise's green, refined, and intelligent management level, and realizes the centralized and unified management of the industry.

For more industry application examples, please refer to the case link of Software official website: 1616a787b29f21 https://www.hightopo.com/demos/index.html