
Power companies should monitor and manage the battery packs, battery management systems (BMS), energy management systems (EMS), energy storage converters (PCS), fire protection systems, network security, operating environments and other important electrical equipment of electrochemical energy storage power stations invested and operated by their companies, regularly analyze the safe operation status, strengthen early warning and emergency response of operation risks, and be able to timely warn and take effective measures to eliminate hidden dangers for equipment and systems with safety hazards. [pdf]

This research focuses on the discussion of PV grid-connected inverters under the complex distribution network environment, introduces in detail the domestic and international standards and requirements on grid-connected inverter grid adaptability, and then analyzes in depth the impacts of the access point voltage changes, access point frequency changes, and access point harmonic changes on the inverters.Can grid-connected PV inverters improve utility grid stability? [pdf]

Communication equipment usually uses -48V DC power supply, and the electricity generated by photovoltaic power generation systems is also DC power, so the photovoltaic power generation system is combined with the communication base station, and the electricity generated by the photovoltaic system is used to directly power the communication equipment, reduce the consumption of city electricity, and achieve the effect of energy conservation and emission reduction. [pdf]

The research findings indicate that: 1) Uncertainty in the external environment significantly delays investment in charging stations, highlighting the importance of policies to ensure relative stability in the investment environment; 2) The waiting time for charging station investment is determined not only by external environmental uncertainty but also by initial returns, suggesting that ensuring a minimum return for charging stations is an effective way to incentivize investment; 3) Whether energy storage investment is advantageous depends on the additional investment amount and the marginal contribution per unit of electricity. [pdf]

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]
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