On the Current Situation and Development of Electric Power Communication in my country

Keywords: power communication development history current situation development direction Abstract: With the development of new power communication technologies, the power communication network, as one of the pillars to maintain the safe and stable operation of the power system, plays an important role in China. In order to ensure the safety and stability of China's power system, it is necessary to have an accurate and objective understanding of the development history and current situation of the power communication industry, and put forward development directions and suggestions. This paper explains the development history, current situation and future development direction of China's power communication from three aspects. With the rapid development of communication technology and power technology, China's power communication industry is constantly expanding and improving with the development of the power industry . China's power communication network was created to ensure the safe, stable and high-quality operation of China's power system. It has gone through a development process from scratch, from simple to the use of today's advanced technology, and from single to multiple communication means. Power communication plays a huge role in communication and service in the process of automatic control, commercial operation and automatic management of power grids. 1 Development History of China's Power Communication System China's power communication system has experienced a period of rapid development. In a few decades, it has experienced a stage of development changes from vertical and horizontal switching to program-controlled switching, from open wires and coaxial cables to optical fiber transmission, from analog networks to digital communication networks, from fixed-point communications to mobile communications, and from mainly hardware-oriented to mainly software-oriented technologies. 1.1 From the 1940s to the 1950s and 1960s The development of power communication has always been synchronized with the development of the power grid, supporting and cooperating with each other. In China, in the 1940s, the main transmission line was in the Northeast. Except for cities, other regions were relatively isolated, and open-wire telephones dominated at the time. The carrier machines used for long-distance dispatching mainly relied on Japanese machines. With the obvious sharp increase in China's electricity consumption in the 1950s and 1960s, the Northeast Power Grid spread to North China and built the North China Power Grid, but China's public network communication was still relatively backward. During this period, the power line carrier machines used in China were still imported from abroad. While importing from the Soviet Union, China began to develop and produce them on its own. 1.2 The 1970s Since the early 1970s, China's power communication system has begun to use microwave communication in some important departments with large information demand; by the end of the period, China's power communication system has further developed, with power line carrier communication dominating, and other small-capacity (less than 120 channels) FDM analog microwave, postal and telecommunications multi-channel carrier, cable and overhead open wires, etc. China's power grid has expanded to have three major power grids in North China, Northeast China and East China, and some regions have begun to form their own independent communication networks . At this stage, China's power communication is mainly based on audio, carrier, analog microwave and other communication methods. However, in most areas across the country, power grids with a capacity of more than 100,000 kilowatts do not have communication trunk lines, and the communication circuits are not very sound and the automation level is not high. Some areas often experience power outages. The backwardness of the communication system has become one of the weak links in China's power work, which has had a great impact on China's industrial and agricultural production, and the gap with foreign countries is still large. 1.3 The 1980s The 1980s was a period of rapid development of China's power communications. With the development of large-scale integrated circuits, digital microwaves, optical fiber communications, and program-controlled switches emerged. Large power stations, large units, and ultra-high voltage transmission lines continued to increase, and the scale of the power grid became larger and larger. Following the construction of the digital network of the power system in the late 1970s, China began to build a dedicated power communication network in the 1980s. During this stage, digital microwaves, satellite communications, optical fiber communications, mobile communications, tropospheric scatter communications, ultra-high frequency communications, digital program-controlled switches, etc. were promoted and used. Of course, the rapid development of the power grid has also put forward new requirements for the management and technology of the power grid. China has kept pace with the times and established a special agency for the construction and management of the power communication network from top to bottom. It has gradually formed and improved a set of technical policies to guide the construction of the power communication network, formulated relevant regulations and technical requirements for communications, and cultivated a group of talents familiar with communication design, construction, operation, maintenance, and management, and strengthened the construction of forces in terms of policies and systems. 1.4 1990s In the 1990s, China's power communication system developed rapidly and was further improved. The application of new technologies and new equipment was faster and more flexible. Other networks, such as transmission networks and switching networks, were further improved, and a number of high-tech network technologies were introduced, laying a good foundation for the current development of power communication. 2 The current situation of power communication in China 2.1 The main business form of the power communication network In China, the power communication network is a highly professional communication network and an important part of the power grid. With the continuous development of network communication technology, the business form of the power communication network is also expanding and developing. Its main business forms are reflected in the following aspects: 2.1.1 Power grid security monitoring and stability control In various cities in China, the phenomenon of power system collapse often occurs. One of the important reasons is that the power network structure is too weak and the use is extremely unreasonable. In this regard, many regions have made a lot of investment in the security monitoring and stability control of the power grid. For example, a line fault distance measuring device was purchased to locate the line fault point in time; a real-time monitoring system was set up in places where the communication network is unstable to monitor the health of the communication network; through the real-time phasor measurement of the global satellite positioning system, phasor control was implemented in the power system, making it possible for the power system in most parts of China to operate stably. 2.1.2 Meteorology and new energy aspects The power communication system is currently playing an increasingly important role in meteorological monitoring. For example, for outdoor hydropower stations that are unattended all year round, the power communication system can be used to select a suitable location upstream of the hydropower station to place a monitoring station, collect and analyze the precipitation of the year, and then transmit the information through the network to conduct a comprehensive and specific analysis of the data. At the same time, its role in new energy is also becoming increasingly prominent. The research on power generation technology of new energy such as solar energy, wind energy, and tides is a long-term direction of the country's future power process. Therefore, the development and utilization of new energy by the power communication system is also one of the business directions of the power communication network in the future. 2.1.3 Environmental protection Today, as environmental protection efforts continue to increase, the monitoring requirements for various emissions in various fields are constantly increasing. At present, China's power communication system has formed a comprehensive monitoring system for the emissions of exhaust gas, smoke, radiation, etc. from some thermal power plants and nuclear power plants. This system uses advanced technologies such as GPS system, geographic information system (GIS), remote sensing technology (RS), etc. to analyze and process the collected data and physical samples on the spot, and transmit them to the headquarters for unified filing and processing through the network, which greatly improves efficiency and makes a huge contribution to environmental protection. 2.1.4 Commercial operation of power grid The commercial operation of power grid mainly relies on the national networking project. Today, as China's power reform is deepening, it is required to form a large network environment that is connected to the international Internet Enterprises . E- commerce systems are highly secure, fast and convenient, and have great profit space. Establishing an interactive e-commerce platform can not only expand the business scope, but also expand information exchange. High-speed and secure power communication networks play an increasingly important role in real-time transactions of e-commerce and the security maintenance of the power network environment.

2.2 Main Problems of Power Communication in China
2.2.1 Imperfect Management Standards of Power Communication Network Although the standards and systems of China's power communication network meet national and international standards, the standards and specifications of its communication network development are extremely imperfect under the characteristics and requirements of the power system, and the planning and updating are not timely. In today's world where new technologies are updated and developed so rapidly, the imperfect management standards of the power communication network have a great impact on the overall development of the power communication network. 2.2.2 Unbalanced Regional Development In China, due to differences in economic development levels, policy implementation and technology application, the level of power communication development in each region is extremely unbalanced. Some regions and units have already realized digitalization and fiber-optic ring networks, and the power grid and communication service capabilities of the region have been greatly enhanced; while some regions are constrained by geographical and economic factors and lag behind developed regions in terms of development speed. Some are even so remote that it is difficult to guarantee the most basic dispatching telephone connection to the substation, and the development of various regions is extremely unbalanced. 3 Development direction of power communication 3.1 Accelerate the establishment of optical fiber transmission network and increase comprehensive network construction In the power communication system in some parts of China, the power optical fiber communication network has insufficient fiber core capacity and small equipment capacity. Therefore, it is necessary to increase investment in accelerating the construction of the transmission network. It is necessary to increase the transformation and construction of the backbone optical fiber transmission network in the region, attract investment, and do a good job in engineering construction. Moreover, it is necessary to increase the comprehensive and systematic construction of the network in power communication and action processes. For example, in terms of non-voice services of the communication network and IP technology within the network, it is necessary to increase the development and promotion efforts, strive to expand the coverage of the power communication network, do a good job in the networking of various exchange mechanisms, and build the information exchange network in the direction of high speed, high efficiency, strong security and high stability. 3.2 Increase scientific research and technical research China's power transmission technology needs to be improved. On the basis of maintaining the existing traditional transmission mode, we must strengthen the transformation and research and development of new technologies, increase business management efforts and aspects, and encourage scientific and technological innovation while researching and building power communication networks. The application of new technologies such as broadband IP is deeply integrated into the construction of modern communication networks, and the research of funds and scientific research technologies is increased from multiple angles. 3.3 All localities strictly control the construction quality of power communication circuits Under the current situation of the rapid development of power communication in China, efforts should be made to reduce a series of problems such as high bit error rate of communication circuits, poor official monitoring, and poor monitoring system, and prevent the emergence of low-quality engineering projects in power communication network projects. All regions should avoid the adverse effects of "local protection" and "portal concepts" on engineering selection and decision-making. In addition, in the process of network system construction, scientific research efforts and investment should be increased, and the project leaders should also implement the responsibility system, do a good job in testing and supervision, and verify whether the engineering indicators are qualified in a timely manner to ensure the construction quality. 3.4 Actively build a broadband multi-service digital network platform In the development plan of power communication, we should actively build a broadband multi-service digital network platform, lay a solid foundation for current and future development in various business fields such as voice, image, data, media, and news, provide a unified multi-priority level, and ensure business quality. 3.5 Committed to the development of domestic and international markets Guarantee the quality of business services, and carry out access layer and user layer work extensively on the basis of optimizing the core layer. When the power communication network becomes a powerful communication network, we should follow the market mechanism and market operation Laws , make full and reasonable use of our communication network resources, actively expand new value-added services and service scope, plan, build and improve a number of power communication system models with a certain scale and development potential, increase our own competitiveness, gradually move towards society and participate in competition. The strategic position of power communication is extraordinary. To do a good job in the development of the power communication industry, we must rely on a solid power grid structure, advanced communication network, and have a sound Financial and legal system as support. China's power communication technology is currently in a period of steady growth and development, and it has a bright future and strong vitality. Government departments should also increase their attention and financial investment. At the same time, the power communication industry should actively improve its business level and quality, continuously improve its technology and equipment, and widely implement the results with higher scientific and technological content and more comprehensive technology, so as to bring convenience and services to China's power communication industry and the people of the country. References : [ 1] Sun Yecheng, Zhao Daping, Chen Xi. "Development Direction of Power System Information Industry". Communication Research Institute of China Electric Power Science and Technology Research Institute, October 10, 2001. [2] "Development Status of Domestic Power Communication". China Business Network, June 10, 2002. [3] Wang Tao. "Power Communication Method", April 8, 2011. [4] "Thoughts on the Current Situation and Development of Zhangzhou Power Communication", February 1, 2011