
Aiming at the voltage and current measurement for battery banks in mobile communication base station, according to voltage characteristics of wide common-mode range, three methods including sampling with resistors, converting with analog optical coupler and differential subtractor based on amplifier are presented.For bi-directional current characteristic, both single and double amplifier methods are discussed respectively.Also, all the methods mentioned above are analyzed. [pdf]

Indoor (external) type integrated cabinet, realizing multi-level modular design.Modular switching power supply, dynamic loop monitoring unit, fiber optic wiring unit, and battery backup unit can be integrated in one cabinet.It provides stable and reliable power protection and installation space for base station equipment, realizes minimal and rapid deployment, one-stop operation and maintenance, and helps 5G network evolution to be faster, more economical and simpler, and realizes a significant reduction of operation cost. [pdf]

The article discusses the costs associated with building and maintaining a communication base station, categorizing them into initial setup costs such as site acquisition, design and engineering, equipment procurement, construction and installation, permits and licensing, and testing and commissioning, and ongoing maintenance costs like rent or lease expenses, power consumption, equipment maintenance, software updates, security measures, and staff salaries. [pdf]

It includes the additional requirements for BESS, such as connection scheme, choice of switchgear, normal operating range, immunity to disturbance, active power response to frequency deviation, reactive power response to voltage variations and voltage changes, EMC and power quality, interface protection, connection and start to generate electric power, active power management, monitoring, control and communication, and grid-connected tests. [pdf]

On December 29, 2024, with the energized operation of all equipment in the 750 kV Desert Substation, the 750 kV Dingzikou Transmission and Transformation Project, a supporting power grid project for the "Shagohuang" large-scale wind power and photovoltaic base in Northwest China's Qinghai, was completed and put into operation, adding another "green power highway" to the development and utilization of new energy and power supply in Qinghai Province. [pdf]
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