The requirements for reliable power supply in the power supply system determines the need to study the modes of operation of electrical systems with the problem of damage to power lines due to ferroresonance phenomena. In this regard, an effective method is proposed for the analysis of ferroresonance arising in electrical lines between inductors and capacities using generalized models of passive nonlinear elements. The method of analysis makes it possible to obtain qualitatively new and sufficiently accurate analytical expressions for calculating the electromagnetic modes of ferroresonance.
In the paper, the PV power supply control system is proposed to realize the uninterrupted power supply, including DC and AC supply. By the method of combining software with hardware, through the solar panel to the configured two pieces of battery could realize the function of fast and slow charging, and the supply battery is changed by testing the battery power to the load uninterrupted power supply. Moreover, when the output voltage of the solar panel is lower than the battery, the output voltage of solar panel is boosted by DC/DC circuit to make the solar panel at low pressures also to charge the battery, effectively solving the difficult solar energy in the weak power supply problem.
An example of using renewable energy sources in the conditions of a locality in the Arkhangelsk region, typical for the Central part of Russia, is considered. The possibility of using wind and solar energy to provide electricity to domestic consumers is analyzed on the example of one house with a living area of 60 sq. m. Calculations are made and parameters of the wind farm, solar panels and accumulators are determined based on the provision of electricity from the wind farm and battery, since in non-Sunny times and windless days, as a rule, the solar battery operates. Based on the calculations, the parameters were determined and an inverter was selected for the proposed power supply system.
A novel distributed photovoltaic power generation and commercial power complementary hybrid power supply system was designed and developed, and the proposed system applied to the lighting power supply system used in university classroom energy-saving lighting. Combined with intelligent control technologies, to realize the classroom energy-saving and LED efficient lighting, effectively reduce the lighting energy consumption in university campus. The proposed system can ensure efficient and reliable power supply for classroom lighting applications.The designed and developed experimental system verified the feasibility, reliability and superiority of the proposed system.
Study of ferro resonance using generalized models of Passive nonlinear elements