Yang Libin

Research on Distributed User Photovoltaic Power Supply Bidirectional Measurement and Energy Management Technology

With the development of distributed energy and energy storage devices and the increasing of AC / DC load demand, the AC / DC hybrid microgrid with the advantages of AC microgrid and DC microgrid has been paid attention to. The energy flow path of AC / DC hybrid microgrid is complex and difficult to measure. In particular, the technology of DC bidirection measurement has become the focus of research at home and abroad. The breakthrough of the key technology of the bidirectional measurement is helpful to accurately calculate the cost of the power supply, electricity supply, and to protect the legitimate economic interests of users and power companies, and promote the rapid development of distributed energy generation.

Research on Output Controllability of Photovoltaic Grid Connected Generation System with Hybrid Energy Storage

In order to reduce the impact of photovoltaic power output uncertainty on the economic operation of power system, this paper studies the problem of controllable output power of photovoltaic power generation system. In grid connected photovoltaic energy storage system, typical photovoltaic power generation capacity curves obtained by statistical analysis, using particle swarm optimization algorithm to optimize the economic model under different power system output control, when the lowest total cost is the optimal selection of the battery capacity. The battery capacity is determined, the photovoltaic power generation pre measurement, using particle swarm optimization algorithm to optimize the system economic operation model, each time the amount of output of photovoltaic power plant is expected to system debugging, the specific numerical output. Combined with the output of photovoltaic power generation, the output power of the battery is calculated by the analysis and calculation unit, and the economic operation of the grid connected photovoltaic energy storage power generation system is realized through the DC/DC control of the battery charging and discharging.

Research on Site Selection and Protection Configuration of Distributed Power Supply in Microgrid System

Distributed generation provides a new opportunity for modern power supply, and also challenges the safe operation of the existing power system. This paper studied on site selection and protection configuration of distributed power supply in microgrid system, mainly including the objective function and constraint conditions of distributed power source siting in microgrid system, the revision of distributed power source location objective function and the protection configuration principles and methods of microgrid and system access point. The results can provide technical support for planning and protection configuration of microgrid access system, and ensure the orderly development of microgrid planning and construction.