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In 2019, the "two sessions" of State Grid Corporation of China made a strategic deployment to comprehensively promote the construction of "three types and two networks", build a world-class energy Internet enterprise with global competitiveness, and build the ubiquitous power Internet of things, opening up a new path for safer operation, leaner management and better service of the power grid.
Ubiquitous power Internet of things
The ubiquitous power Internet of things is to focus on all links of the power system, make full use of modern information technology and advanced communication technology such as mobile Internet and artificial intelligence, and realize the interconnection of everything and human-computer interaction in all links of the power system. It is an intelligent service system with the characteristics of comprehensive state perception, efficient information processing, convenient and flexible application, including four layers of structure: perception layer, network layer, platform layer, and application layer.
UHV Substation
As a landmark project for the large-scale application of UHV AC transmission technology in the world, 1000 kV high-voltage substations can meet more than 1/3 of Shanghai's electricity demand under full load transmission. They are super large hub substations with complete voltage levels in China.
As a pilot unit of State Grid Corporation of China for the construction of ubiquitous power Internet of things, the operation platform developed by a domestic UHV substation has been put into trial operation recently. Wuhan huajingkang Photoelectric Technology Co., Ltd., as the designated partner of the infrared thermal imager equipment of the project, embeds the infrared thermal imaging products into the whole service system, and customizes the corresponding infrared detection schemes for different application scenarios.
Infrared IOT monitoring
For all key parts such as transformers, bushings, clamps, etc., Wuhan huajingkang Photoelectric Technology Co., Ltd. has fixed multiple on-line thermal imagers for fixed-point continuous monitoring, and added multiple ROI temperature measurement areas to meet the requirements of reliability and real-time, while ensuring accurate temperature measurement in high temperature and other harsh environments.
For the transformer bodies of multiple main transformer circuits and the voltage transformers connected with them, high-resolution 640 are arranged respectively × 480 double optical pan tilt, set preset positions for automatic inspection, covering all transformers and voltage transformers connected to them on the opposite side.
For the wind control box equipped with the main transformer, due to the many internal devices in the control cabinet, the narrow space, and the large area that needs to be monitored, each control cabinet is installed and deployed with three huajingkang photoelectric s300b infrared thermal imagers, which adopt a large field of view lens and are equipped with a visible light camera and LED lighting, covering the entire monitoring area.
Cloud platform
Hua Jingkang not only provides omni-directional thermal imager monitoring for ubiquitous power Internet of things, but also independently develops a cloud platform. The thermal imager can access the network through wireless WiFi, wired and mobile cellular methods, and summarize and transmit the data to the cloud platform for storage and management.
Cloud big data and machine learning algorithm are combined to comprehensively analyze multi-dimensional information, establish an expert system based on multivariable analysis model, and carry out intelligent fault diagnosis, aging prediction, defect warning, etc. for the operation of power system.
Using the cloud monitoring Internet of things system, the new power operation and maintenance personnel can check the equipment operation and temperature status in all substations, transmission towers, distribution rooms and other power facilities distributed within a radius of hundreds of kilometers by opening the app software on their mobile phones or intelligent terminals, and make automatic diagnosis by using advanced technical means such as big data and machine learning, which greatly reduces or eliminates the dependence on personnel and quickly finds out the location of suspected hidden dangers, Reduce troubleshooting time.
Based on its long-term technical accumulation in the power industry, combined with the advanced technologies of "big cloud mobile intelligence", Hua Jingkang has helped build the "ubiquitous power Internet of things". With widely distributed intelligent sensors as the data basis, network system as the context, and data processing and intelligent algorithm on the cloud platform as the core, it comprehensively monitors the operation status of all parts of the power system, and improves the operation and maintenance efficiency of the power system, Ensure the safe and stable operation of the system.
