From the enterprise chain and upstream and downstream, the communication power supply industry chain is mainly divided into: raw material suppliers, equipment manufacturers, electromechanical equipment agents, telecom engineering consulting and design institutes, telecom engineering construction, telecom engineering supervision and telecom operators.
From the perspective of space chain, the domestic communication power supply industry is concentrated in the Pearl River Delta, Yangtze River Delta and Beijing. Foreign countries are mainly concentrated in Central European countries and the United States, accounting for 60% of the communication power supply market.
Present situation and problems of industrial chain
Equipment manufacturing has the following problems:
(1) The original innovation is insufficient, and foreign products monopolize the market.
(2) The communication power supply industry needs a thorough reform.
From the perspective of telecom operators, communication power supply has the following development bottlenecks:
(1) lead-acid batteries are seriously polluted.
(2) The power supply equipment occupies a large area and wastes space seriously.
Development trend of industrial chain
From the perspective of equipment manufacturers, the power industry has the following development trends:
(1) Energy-saving and environmental protection energy storage equipment will be popular.
(2) the benefits of "ceiling effect" of communication power supply
(3) Domestic industries are also developing gradually.
From the perspective of telecom operators, the power industry has the following development trends:
(1) Communication power supply is developing to high voltage.
(2) Miniaturization of power supply and increasing demand for high power density.
From the perspective of consulting designers, the power industry has the following development trends:
(1) Coordinate the trend of energy conservation and emission reduction.
(2) the integration trend of comprehensive design specialty
(3) The trend of new business units: neutral and objective third-party testing institutions.
(4) Communication power supply design: developing to low-voltage distribution design.
(5) Leading IDC to build a new paradigm
In a word, communication power supply is the key infrastructure to support informatization in China. Strengthening independent innovation and paying attention to energy conservation and environmental protection can promote the healthy development of the industry; The state should make corresponding plans for communication power supply and come up with more and better policies in terms of industrial layout, policy support and innovation incentives.
Basic information of book information
Title: Communication Power Supply
Author: Zhang
Publishing House: People's Posts and Telecommunications Publishing House
Publication date: February 2009
ISBN:9787 1 15 192059
Format: 16
Pricing: 29.80 yuan introduction
According to the overall structure of communication power supply system, communication power supply is divided into overview, AC system, DC system and comprehensive test. In the overview, the general concept of communication power supply system is introduced, and how to form a whole and a power supply system that meets the requirements of normal communication operation is briefly explained. The chapter of AC system introduces high and low voltage power distribution, oil engine, AC power distribution and air conditioning; DC system introduces rectifier, storage battery, UPS and direct distribution; The comprehensive test part introduces the principles and steps of grounding lightning protection, monitoring and daily test and maintenance of communication power supply system. From chapter 1 to chapter 1 1, the order of cognitive laws is considered. Firstly, several typical tasks are put forward, including required knowledge, ability, reference action plan, reference operation steps, inspection and evaluation, etc. In the second part of each chapter, match the theoretical expertise needed to complete typical tasks. This arrangement is conducive to improving readers' learning initiative and achieving the purpose of improving their professional post ability.
Communication Power Supply is suitable as a teaching material for communication majors in higher vocational colleges, and can also be used as a reference for maintenance and management personnel engaged in communication power supply and centralized monitoring system.
Library catalogue
Chapter 1: Communication System
Chapter 1 High and Low Voltage Distribution 1
The second chapter oil engine power generation system 38
Chapter 3 AC power distribution 60
Chapter 4 air conditioning equipment 69
Chapter two: DC system
The fifth chapter rectification and transformation equipment 98
Chapter VI Battery 125
Chapter VII UPS 15 1
Chapter 8 DC distribution 174
Part III: Comprehensive test
Chapter 9 Communication Grounding and Lightning Protection 186
Chapter 10 Centralized monitoring of communication power supply and environment 208
Chapter 1 1 Daily maintenance test of communication power supply system 235
Reference document 270
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