[ China Instrument Network Instrument Development ] Power grid security is an important part of national security. In response to the increasing demand for national power grids in large-scale power consumption information collection, distribution automation, precision load control, distribution transformer monitoring, fault display, etc., relevant national departments intend to allocate special frequency bands to the national grid within the 223MHz-235MHz frequency range. The construction of a power wireless private network with wide coverage, large capacity, high speed and low delay capability will improve the security, real-time, flexibility and intelligence of the national grid operation.
223-235MHz is a frequency band used for telemetry, remote control, data transmission and other services. There are a lot of frequency points that are not used regularly. Therefore, it is necessary to overcome a series of difficulties such as coexistence with existing data stations and frequent changes in the wireless communication environment. Shanghai Microsystems With the support of the State Grid Information and Communication Department, the R&D team was quickly established, and a unique broadband wireless power Internet of Things solution with dynamic spectrum sensing and anti-interference was proposed. At present, the program has been included in the national grid mainstream reference program and participates in relevant industry standards.
The "230MHz Power Internet of Things" proposed by Shanghai Microsystems, combined with the use of 230MHz dedicated spectrum, is based on mature LTE technology and advanced 5G technology, developed with dynamic spectrum sensing and anti-interference, arbitrary discrete carrier aggregation, OFDM Broadband wireless power private network access system with key technologies such as /TDMA and regional coverage enhancement.
The system is mainly composed of a core network, a communication base station, a communication terminal, and network management software. The core network is responsible for access network control management and bears service data transmission functions; the communication base station provides wireless coverage and communication terminal equipment access control functions; the communication terminal is responsible for aggregation and upload of service data, and the issuance of control commands, which can be classified into CPE terminals. And equipment warehouse terminals; network management software can provide management functions for each network element device.
The State Grid Information and Communication Department and the Electric Power Research Institute have fully recognized the proposed scheme of Shanghai Microsystems. We hope that Shanghai Microsystems will exert its technological and innovative advantages and produce significant results in response to the needs of the national grid.
At present, the relevant standards proposal of Shanghai Microsystems has been submitted to the State Grid, and the equipment has been approved by the state without a model. The key technologies and equipment developed by the institute have also been used for trials for up to ten years in Qinghai Electric Power, Ningxia Electric Power and Zhongshan Electric Power. After the first batch of private network pilots this year, it will be expected to serve as the main battlefield for the national economy. Another typical case is to take advantage of the core advantages of the wireless micro-network in the field of Shanghai Microsystems.
(Original title: Taking advantage of the research and development of wireless communication, Shanghai Microsystems has made significant progress in the "230MHz Power Internet of Things")
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