The proposal of the "dual carbon" goal in mainland China has established a new power system with new energy sources such as wind power and photovoltaic power as the main position. New energy is mainly concentrated in the vast and sparsely populated areas of the mainland, showing the characteristics of reverse distribution of resources and demand. As an important means of new energy consumption, UHV transmission spans the north and south of the river, passing through various uninhabited areas with complex terrain such as mountains, forests, grasslands, and deserts, which require digital and intelligent technologies such as online monitoring of transmission lines and drone inspection to carry out remote video monitoring and detection of lines.
Communication pain points faced by transmission line monitoring and inspection
At present, in the transmission business system, the large-scale application of typical scenarios such as transmission channel image monitoring and intelligent inspection of transmission drones is being accelerated to empower business transformation and reduce the burden on the grassroots level. In the no-signal area, it is difficult to transmit data such as UAV inspection video + RTK, online monitoring, and visualization in real time, and the traditional back-to-back networking mode is adopted, and when a node fails, it is easy to cause large-scale disconnection. The "no man's land" communication breakpoint, complex terrain, difficult construction, and high power consumption of communication equipment are the problems of digital and intelligent operation and maintenance of UHV transmission.
Integrated inspection and communication scheme for transmission lines
In view of the communication problems such as intelligent inspection of power transmission UAVs in non-signal areas, NARI Xintong and Chenxin Technology jointly launched the integrated inspection and communication solution of power transmission air, space and ground, which includes tower (transmission tower), airborne and ground ad hoc network equipment, and the tower equipment realizes transmission channel network coverage through chain multi-hop ad hoc network to meet the needs of broadband data transmission such as video. The vehicle-mounted ad hoc network equipment can be connected to the ad hoc network on the tower at will, so as to realize the network access anytime and anywhere, and can transmit without packet loss and low latency along the line to meet the long-distance inspection and communication needs of the transmission channel.
Based on the long-term accumulation of wireless communication technology and power product research and development, relying on the deep technical accumulation and rich production and research experience of Chenxin Technology in the field of SDR chips and ad hoc networks, NARUI has jointly carried out the research and development of the integrated inspection and communication solution for transmission lines and equipment systems suitable for power business application scenarios, which can effectively improve the efficiency of ultra-long-distance UAV inspection under complex terrain conditions and meet the transmission needs of large-bandwidth services。 This solution has the following advantages:
1. Fully meet the needs of UAV inspection video and RTK transmission in dual-free (no power and no network) areas;
2. For complex environments, visual monitoring and online monitoring business transmission are stable;
3. It can realize the network access at any point in the transmission channel, and realize the equipment data backhaul and RTK data update;
4. The hardware ecosystem is open, and users can expand freely;
5. The equipment has low power consumption, convenient engineering and strong ease of use.
NARI Xintong and Chenxin Technology jointly launched a series of self-organizing network terminal solutions on the tower, airborne and ground, through the tower ad hoc network terminal solution, to build a chain network, the effective rate of the whole link is greater than 10Mbps, easy to install, strong adaptability, even in the extremely harsh environment, in the "Sha Ge Huang" scene, minus 40 degrees ultra-low temperature scene, it can still work stably, greatly ensuring the efficiency and safety of inspection. Airborne ad hoc network terminal solutions and ground ad hoc network terminal solutions can be applied to airborne equipment and ground equipment, seamlessly access the ad hoc network backbone network on the tower, and meet the needs of various business communication data. By constructing an ad hoc network network in the double-no-no area, the communication problems of wide and narrow band service monitoring, unmanned aerial vehicle (UAV) inspection, and personnel inspection under the tower of the transmission channel are effectively solved.
This solution can be combined with UAV airports to provide an inspection distance of more than 200 kilometers and a line inspection ad hoc network solution across a variety of complex terrains, effectively meeting the needs of industry customers.
Chenxin Technology defines the ad hoc network from the chip, and NARUI Xintong promotes the application of the ad hoc network in the power scenario from the research and development of the whole machine, the research of solutions, and the construction of the system platform
Chenxin Technology's ad hoc network technology is a set of high-bandwidth, low-power, long-distance, safe and reliable wireless communication protocols developed on the basis of self-developed SDR chips (software-defined radio chips), which fully integrates 4G/5G physical layer technology, adopts OFDM, MIMO, CA and other key technologies, supports a variety of bandwidth allocation, has the characteristics of long transmission distance, large data throughput, strong anti-interference, small transmission delay, and supports high-speed movement. Fast frequency hopping and other safety-related technologies, support QoS mechanism to ensure the quality of wireless transmission services, high safety and reliability, frequency band can support 230Mhz~6Ghz, a wide range of working frequency bands, can meet the needs of a variety of industry applications. Chenxin Technology continues to deepen the industry market segment, gives full play to the technical advantages of SDR according to the needs of customers in the segmented fields, conducts in-depth optimization from the chip and algorithm level, and continuously iterates the ad hoc network technology to meet diverse needs. Chenxin Technology's ad hoc network technology has been widely used in unmanned aerial vehicles, robots, emergency communications, power Internet of Things and other industries.
In recent years, for transmission lines and other subdivisions, Chenxin Technology has launched high-performance M-LINK chain networking technology, innovatively proposed Mesh low-power technology, standby power consumption as low as 1W, reducing power supply costs, original two-hop resource reuse technology, to achieve long-distance chain networking high-speed transmission, to solve the problem of rapid decline in throughput rate after multi-hop, M-LINK chain networking technology has high receiving sensitivity, can use omnidirectional antenna, reduce construction difficulty, shorten construction period.
Based on the leading ad hoc network technology of Chenxin Technology, NARUI independently develops ad hoc network equipment suitable for power business scenarios, launches an air-space-ground integrated inspection and communication solution for transmission lines in non-signal areas, builds an ad-hoc network equipment and outdoor battery operation and maintenance management platform, comprehensively promotes the digital transformation of transmission line operation and inspection in non-signal areas, and helps improve the quality and efficiency of transmission operation and inspection.
Chenxin Technology Company Introduction
Chenxin Technology Co., Ltd. is a professional integrated circuit design enterprise, mainly focusing on the research and development, design and sales of wireless communication SoC chips and module products, committed to providing customers with safe and reliable wireless communication chips and solutions, and is one of the few domestic suppliers of wireless communication chips and solutions that master 2G/3G/4G/5G and other cellular communication and related evolution technologies. The company mainly provides customers with chip products, module products, chip customization services and related technical services, which are widely used in private communications, broadband Internet of Things, Internet of Vehicles and mobile communications.
Founded in December 2019, the company currently has a registered capital of 1.922 billion yuan and more than 550 employees. The company is headquartered in Qingdao West Coast New Area, with subsidiaries in Beijing, Shanghai, Xi'an and Shenzhen. The company is a "Double Hundred Enterprise" approved by the State-owned Assets Supervision and Administration Commission, and completed the strategic investment and mixed ownership reform in December 2019, and the shareholding system transformation in November 2022. The company is a national high-tech enterprise, a "unicorn" enterprise in Shandong Province, a "little giant" enterprise of the Ministry of Industry and Information Technology, a "specialized, special and new" enterprise in Qingdao, a new economy cutting-edge enterprise in Qingdao, and a leading enterprise in production services in Qingdao.
The company is the only platform specializing in wireless communication SoC chip design and related business under China Information Technology Co., Ltd., and has profound technical accumulation in private network communication, broadband ad hoc network communication, Internet of Vehicles communication, etc., and has formed three core technologies, including ultra-large-scale SoC chip design technology, wireless mobile communication technology, and software-defined radio (SDR) chip platform technology.
NARI Information Communication Company Introduction
Nanjing NARI Information and Communication Technology Co., Ltd. (hereinafter referred to as "NARI Information and Communication Technology") was established in April 2013, which is the core force of information and communication construction of State Grid Corporation of China and the pillar enterprise of NARI Group's information and communication and modern service industry, with a registered capital of 390.4 million yuan. The company mainly provides R&D, equipment manufacturing, engineering installation and service consulting in the field of information, communication and network security for large enterprises and governments such as State Grid, China Southern Power Grid, power generation enterprises, rail transit, etc.
In accordance with the four business directions of "product, integration, service and consulting", NARUI has developed and built a large number of information systems to support the construction of a strong smart grid, forming 8 categories and 28 sub-categories of products based on power grid production management informatization, enterprise operation and management informatization, network security, smart IoT and communication, and the product line covers all business areas of power information and communication, and the business is booming. While stabilizing the core market of the State Grid, the company also digs deep into the China Southern Power Grid and other units outside the system, and actively develops the information and communication market in the fields of power generation enterprises, government agencies, and other large enterprises, forming a market layout with a reasonable structure, stable share, and covering all parts of the country.