Today, I will take you to talk about the power grid communication room.

With the development and expansion of the power grid scale, a communication room as a power business data landing point and information transfer station and substation at the same time built. They undertake the independent space for centralized processing, storage, exchange, management and other functions and services of power-related production business data and non-production electronic information generated during the operation of the substation. They support the operation of the communication system from the physical level and are the hub of the communication system and the aggregate of information exchange. The power communication room is usually compared to the "neural node" of the power communication network ".

  Power grid communication roomMainly divided into the main network convergence layer communication room, the main network access layer communication room, the main network terminal layer communication room three. With the increasing density of communication equipment in the computer room, the power supply and capacity requirements are getting higher and higher, and the operating environment is getting worse and worse, which causes many difficulties in the operation and maintenance of the power grid communication room.

1. Difficulties in equipment expansion

The early planning of the power communication computer room did not predict the vigorous development of the information industry. When selecting the computer room, only the space required to meet the carrier equipment and program-controlled switching equipment in use at that time was considered. Only a small amount of space was reserved for subsequent expansion. The placement was messy, there were no uniform rules, and the equipment was not installed in zones.

With the continuous increase of communication power communication functions, the number of all kinds of communication equipment is increasing. The new equipment can only be installed in any screen cabinet with spare space. The chaotic placement of equipment such as transmission, access and dispatching data network leads to poor business connection between relevant equipment and cross of connected cables.

Due to the limitation of the floor height, area, load, column distance and other factors of the main structure of the building, some stations can not even add new equipment to meet the "N-1" risk control, which greatly reduces the stability and reliability of the relevant communication network frame of the station.

2. The integrated wiring is messy

  Electric power communication roomExternal cables (such as cables, optical cables and other integrated cables) are laid to the communication room through the cable trench from the switchyard, main control room, protection room, etc. in accordance with the relevant requirements of the substation.PVC pipe protection, fire paint spraying, cement blocking and other methods for fire prevention, anti-rodent, anti-break treatment. The internal cables entering the cable trench or bridge of the communication machine room are maintained by the communication operation and maintenance personnel. At the initial stage of operation, measures such as corrugated pipes and signs are strictly adopted to lay them under the floor of the machine room according to the specification requirements. However, the increase of equipment also leads to the accumulation and crossing of internal cables. In the process of operation and maintenance wiring, emergency repair and line inspection, the potential risks of pulling cables by mistake in the operation business are increased.

3. Insufficient power supply configuration

Communication power is the heart of the communication network and an important part of the entire communication room. According to the requirements of relevant specifications, the communication equipment with dual DC power input function shall be powered by two sets of communication DC power supply systems respectively; if the equipment cabinet is equipped with a DC distribution unit directly connected to the DC power distribution cabinet, when supplying power to the communication equipment in the cabinet, two sets of independent DC distribution switches shall be configured to be independently connected to the two sets of communication DC power supply systems respectively, and parallel connection is prohibited.

PDU is not used in the equipment cabinet of most old station computer rooms. Each set of equipment power supply incoming lines are directly connected to the DC power distribution cabinet, or there is space in the cabinet to install new equipment. However, PDU can no longer provide air switches suitable for differential requirements. All equipment in the cabinet must be shut down and a larger capacity DC distribution unit must be replaced to supply power to new equipment. Insufficient power supply configuration brings unnecessary business interruption.

4. Poor HVAC environment

Communication equipment is very sensitive to changes in temperature, humidity and cleanliness of the computer room environment. Most 110kV and 35kV voltage grade main network terminal substations are located close to load centers that consume centralized power such as factories and mining areas, resulting in the operating environment of the terminal floor computer room being unable to compare with the convergence floor computer room, and the airtight performance of the computer room cannot guarantee the dust-free operation of the equipment, and the dust accumulation of the equipment is obvious. Due to limited space in the computer room, industrial precision air conditioners cannot be equipped, but ordinary household air conditioners providing refrigeration and dehumidification function have frequent failures.

The environmental conditions in the computer room are directly related to the operation reliability and service life of the communication equipment, and affect the safe and reliable operation of the communication network.

In the next issue, Xiaobian will introduce how to build the communication network room of "life cycle concept" and "standardization concept". Please look forward to it!