This paper starts with the connotation of China's power communication, mainly analyzes the application of power communication in the smart grid and the challenges it faces. After analysis, the smart grid is an important means to promote the modernization of China's power grid. As an important part of China's energy strategy, it plays an important role in China's national construction. Electric power communication is an important support for building a smart grid. Doing a good job in power communication, promoting innovation in power communication technology, and vigorously cultivating power communication professionals and innovative talents are the requirements for promoting smart grid construction and the fundamental guarantee for promoting the development of China's power industry. .
Power communication is an important part of building a modern power system, and it has a deep historical origin in China's power industry. The power communication system is composed of transmission systems, switching systems, and terminal equipments such as power plants, power departments, and substations. It is the command center for the grid to operate effectively. With the development of China's social economy and the continuous improvement of the level of science and technology and information, the development of the power communication industry is facing new challenges. On the basis of vigorously developing smart grids, the electric power industry, combined with modern information and communication technologies to meet the sustainable requirements of power development, has increasingly become a realistic choice for the development of modern electric power industry. Therefore, implementing the innovation of China's power communication technology and vigorously strengthening the construction of intelligent networks is the need to strengthen the construction of China's electric power industry.
First, the connotation of power communicationThe most striking feature of the smart grid is its intelligence. It is based on a two-way, high-speed network foundation. It is built with safety, economy, efficiency, reliability and environmental protection through measurement technology, sensing technology, decision support technology, control methods and tools. The power grid, in order to improve the utility of the power system, and effectively meet the needs of users, this is the pursuit and goal that power companies are eager to achieve. Power communication is an important component of the power system, involving power generation, power transformation, power transmission, power distribution, power consumption, etc., by providing special communication services to ensure the reliable operation of the power system. Due to the complicated steps of the power system, if centralized management and unified scheduling are to be realized to make the power transmission safer and more economical, it must be realized by means of the power communication system, mainly because it has the same physical structure as the service object and the supporting structure of the power distribution network. The EMS system can obtain grid data in real time and classify it reasonably. It can also process and analyze the operation data by means of the SIS system. In addition, it has outstanding performance in the energy metering and management demand side, which not only meets the requirements of the construction of the smart grid, but also provides it. The necessary basic support, so innovative power communication technology, and its widespread application in the smart grid has very important practical value.
Second, the application of power communication in the smart grid (A) the application in the business processBased on the traditional power grid, the scope of smart grid automation has been expanded. Whether it is collecting and integrating grid information, or analyzing and optimizing business, it has greatly improved the efficiency of power system operation, grid operation reliability and power service level. . AMR (Automatic Meter Reading), AMI (Automatic Measurement), SIS (Instant Messaging), TMR (Electric Energy Billing), DMS (Distribution Network Management System), CDMA, etc., realized by various advanced power communication technologies GPRS, and other devices and systems can collect three types of data such as grid operation, equipment status, and customer measurement in real time, and classify them according to the practicability and urgency of the data, and then transmit them to the corresponding server under the function of the transmission interface. In this way, the emergency data can be protected from the interference of redundant data, which is beneficial to effectively control the calculation of electric energy and electricity charges, and timely grasp the power consumption information of the majority of power users, thereby analyzing the operation of the power grid, optimizing the grid design, and mastering the grid assets. Such as providing value information, such as using the above obtained data and analysis results, can achieve fast and accurate fault location, so as to restore power supply as soon as possible; can replace faulty, aging, backward equipment, or modify the line in time; help adjust the grid maintenance plan , predict the remaining life of equipment, prevent faults, defects, etc.
(2) Application in important fields1. Application in the field of power supply and distribution; because the intelligent substation is responsible for providing data and controlling objects, it is the pioneer and focus of the smart grid throughout the entire construction process of the smart grid, so it must be safe when constructing the smart grid. Based on reliable intelligent substation, with the support of advanced technologies such as information, communication, sensing, intelligence, control, etc., with the help of networked, intelligent and standardized communication equipment and information platform, real-time monitoring of substation panorama and automatic control Its operation and its effective connection and cooperation with the off-site system, thereby reducing human intervention and improving the reliability of substation operation; and the distribution network is also an important component of the smart grid, which is mainly based on advanced sensing, computer communication, Modern technologies such as measurement and control, efficient, flexible and reliable grid structure, and a safe and fast communication network for timely and flexible processing of faults to meet energy storage components and segmented power supplies with high permeability characteristics. Access requirements, in order to achieve the interaction, integration, self-healing, compatibility of the distribution network, to meet the user's power The amount of demand.
2. Application in the security field; the realization of smart grid means the effective integration of information flow, business flow and power flow, wherein the information flow is closely related to the operation of the power grid system, which requires effective measures to strengthen the security maintenance of the grid information. The main use of modern encryption, horizontal isolation, network protection, virus defense and other modern technologies, with basic, environmental, operational management, disaster warning and other information monitoring technology and transmission line function system, and flexible access to different Institutions, units, and devices ensure the safe and convenient transmission of information and promote the orderly operation of the smart grid.
(III) Application of new technologies for power communicationDriven by the power of science and technology, the power system has produced a series of new communication technologies such as softswitch technology, ASON, and unified communications, which has undoubtedly accelerated the construction of smart grids. For example, in the form of transmission network, the optical network highlights its intelligent side. In contrast, its transmission rate is faster and its capacity is larger. It can directly provide G-level optical port circuits for power end users, and even Provide standard 2M circuit to meet the requirements of smart grid communication reliability; then, unified communication technology can integrate multiple services on IP-based network platform, so that users are not limited by location, equipment, time The exchange and sharing of grid information and data, such as the use of the latest IP voice technology to solve the drawbacks of TDM switching network reconstruction, in order to achieve unified operation and management of grid information and data; because the smart grid needs to rely on power communication and ultimately Users realize interaction, so they can be realized by access technologies such as 3G wireless sensing, PON, and PLC.
Third, the conclusionIn short, the smart grid is an inevitable choice for the development of power systems, and power communication plays a key role in the construction of smart grids. However, there are still some problems that need to be solved urgently. Therefore, we must increase research and innovation to make power communication better. It is integrated into the smart grid to provide users with more convenient, safer and better quality power services.
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