The composition of the communication power supply system
The communication power supply is an important part of the communication system. A complete communication power supply system consists of 5 parts: AC distribution unit, rectifier module, DC distribution unit, battery pack, and monitoring system. Such a combined communication power supply system has a wide range of application significance. It is not only suitable for power system communication, but also for all private network communications and public network communications.
Basic requirements and characteristics of communication power supply
The basic requirements for the communication power supply system are reliability and stability. Generally, the impact of a failure of communication equipment is small and local, but if a communication power supply system fails, the communication system will be completely interrupted. Therefore, the power supply system must have backup equipment, the power supply equipment must have spare parts, and the mains must have dual or multiple inputs, with AC and DC as backup for each other.
my country's requirements for communication power supply are: perfect lightning protection measures, a large range of AC input voltage fluctuations allowed by the equipment, and multiple backup systems to prevent the power supply system from completely interrupting the power supply. Due to the wide variety of power grid distribution and the conditions for using mains power, the mains voltage fluctuation range in many places is very large. Especially for some substations, microwave stations, optical communication stations, modules, etc., the AC voltage fluctuation range is sometimes more than ±30%. In order to improve the availability of the mains, the power supply equipment is required to have a wider working voltage range, otherwise it is necessary to add a voltage stabilizing device.
Management of communication power supply
1. Strengthen the attention to power supply equipment
Power supply equipment is quite different from other equipment in the communication network (such as switching, transmission, etc.). In essence, power supply equipment is electromechanical equipment rather than communication equipment. Because of this, it is not given enough attention in the communication industry, and it cannot be guaranteed in terms of organization, personnel, funds or management. However, it must be seen that as the energy guarantee of the entire communication and telecommunications network, the role of communication power supply is holistic and global. Although it is not the mainstream equipment in the communication network, it is the most important and critical equipment in the communication network.
2. Strengthen the specialization of power supply management
Communication power supply requires that all levels of management, construction and maintenance of the communication network should have independent power supply professional management organizations and personnel. Because communication power supply is a profession, and a large profession that includes multiple systems and disciplines, it should be managed accordingly. It is not enough and unscientific for other professionals to manage the power supply profession.
3. Pay attention to the initial design and installation of the communication power supply system
When designing the power supply system, full consideration should be given to the capacity, geographical location, spatial layout, future development, equipment quality, engineering survey and design, operation mode selection, construction management, operation and maintenance management, etc. Among them, the equipment selection, scheme design, engineering management and other links should be paid special attention to and managed.
4. Specific measures for the purchase and maintenance of power supply equipment
(1) In the process of purchasing communication power supply, in addition to considering cost performance, high reliability, multiple automatic protection functions, wide voltage, good current balancing performance, online operation mode, and whether the production is strictly organized in accordance with the ISO-9000 quality assurance system should be considered. In addition, the system failure rate, lightning protection and surge protection measures, AC and DC power distribution integration, etc. should be the focus of analysis and consideration of configuration. Highly reliable equipment should be selected and backup equipment should be reasonably configured.
(2) The power supply mode should vigorously promote decentralized power supply, have spare parts and backup, use more than two independent power supply systems for communication equipment using the same DC voltage.
(3) In order to shorten the average fault repair time of equipment as much as possible, it is necessary to frequently analyze the operating parameters, predict the occurrence of faults, and eliminate them in time.
(4) The equipment should be modular and hot-swappable to facilitate replacement and maintenance. Another thing is to establish emergency measures for power failures in normal times to ensure reliable power supply. Finally, it is necessary to improve the level of technical maintenance and vigorously promote the centralized maintenance system.
In summary, in the composition of the communication network, power supply is its "blood" and a necessary condition to ensure smooth communication. Only by paying enough attention subjectively and creating a good objective operating environment, achieving professional and institutionalized management, advanced equipment and technology, and modern operation and maintenance, can the safe production and operation of the communication power supply system and the communication system be guaranteed, and the reliable and smooth communication be ensured.
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