The main role of power communication is to protect the safe and stable operation of the power system. In the current use, it is an important basis for grid dispatching, network operation, and management modernization, and it is also an important means to ensure the safety, reliability, and economic operation of the power grid. In the entire power communication network, the requirements for the transmission and reception of information must be high, so many power companies have established their own dedicated channels for the power system. 1. The development prospect of power communication under the new power structure Since entering the twenty-first century, the development of electric power communication has undergone rapid development. In China, the main manifestation is: From the vertical integration of the past power system to the current pattern of the coexistence of power grids and power generation companies. With the increasing degree of informationization, the impact of power communications on the power industry is increasing, and the traditional communication model faces great challenges. According to the analysis of experts, in the following period of time, the development trend of electric power communication is mainly based on internal demand, and external expansion is a supplementary form. Within the power grid, not only should pay attention to the importance of communications, but also reduce construction costs and operating costs. Outside the power grid, it is necessary to overcome the influence of unfavorable factors from the outside world, but also to face the continuous changes in the market. This requires electric power communication workers to constantly improve their professional skills, on the other hand, they must actively do a good job of all communication work in order to ensure the normal operation of power communications. Under the premise of ever-increasing communication technology and management level, dedicated communication networks will shift from telephone services to data services, gradually forming multimedia network services. The power line communication PLC is a very good broadband access technology with a good development prospect at present. During the R&D process of this technology, it can make full use of power facilities and vigorously develop power communication to provide telecommunication users with more aspects. A reasonable access method can realize the four functions of voice, video, data, and power, and has a very broad prospect. 2. Power Communication Network and System Security 2.1 The role of power communication The power communication network belongs to the information system. In the development of the power industry, the power communication mainly has the following functions: 1 The power communication network can provide a platform for the power system information communication network, and can provide corresponding services and priorities for different computer application systems. grade. 2 Ability to manage communications monitoring, network planning, and customer service systems. 3 Power communications can develop, maintain, and use related information resources. Therefore, as an important communication system, the power communication network must pay attention to security issues. In terms of network and information security, the State Power Corporation has formulated a corresponding "safety protection plan for power grid dispatch automation systems" and "security monitoring of networks and information." And other documents. 2.2 Problems Occurring in Network Security of Power Communication Systems 1 Physical security of communication networks Mainly includes three aspects: The first aspect is the damage caused by man-made or external factors on the fiber optic cable trunk, which can not communicate normally, and the interruption of the microwave trunk line will result in information interruption; the second aspect is the management and automatic monitoring of the communication room. As well as on-site monitoring, etc.; The third aspect is the safety management of cable ducts, wiring stations and antenna towers, and coordination with relevant management departments to prevent external factors or man-made damage. In the management of security measures is relatively easy, but the difficulty of the external line management is more difficult, mainly through on-site network monitoring and manual inspections, the problem is solved in a timely manner, but also to do emergency prevention work, the division Tasks in different areas of responsibility, troubleshooting in the shortest possible time. The more special optical cables such as the OPGW are responsible for important tasks in the power industry. If the cable is interrupted, it will have a great impact on the power communication system, and the post-repair work is also very cumbersome, so its safety issues should cause height note. The main role of the nationalized quasi-electric 500KV bus loop optical fiber OPGW cable is to transmit relay protection information in the power system. Every part in the process of transmission will do its part to reduce catastrophic communication accidents. . The main safety measures can be summarized as follows: engineering design and construction quality management, preventive maintenance, product quality inspection, and cable corrective maintenance. 2 Security Management Issues of Communication Network Management System The security management issues of the communication network management system mainly include operation right management, network configuration management and flow management, user level management of network management system, and system backup and data management. When the network management system is remotely pulled in, there are many potential security risks. Therefore, corresponding measures must be taken to restrict the system and ensure the normal operation of the system. The general measures taken include: 1 Restriction of dial-in. It is necessary to limit all internal and external dial-in to eliminate the potential security risks caused by the external environment. 2 Divide the closed user group. Mainly on the dial-in connection from the inside line to the outside line, the call can only be set up on a user group. This way of dividing the closed user group can eliminate internal security risks. Under the operation of the power communication system, many organizations pay insufficient attention to the safety issues of the communication network management, and many security accidents will occur. Therefore, the relevant departments must cause a high degree of attention.
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