Hybrid photovoltaic power plants
Hybrid PV power plants are combined backup power supply systems. In combination with modern electricity saving and storage systems it allows you to completely avoid interruptions in the supply of electricity, which are caused by scheduled or emergency shutdowns of the general electrical network. The need to install backup solar power plants is justified in those cases when the possible damage caused by the outage of the general power grid is greater than or equal to the cost of electricity that will be produced by the solar power plant.
Hybrid power plants begin to function when there are interruptions in the supply of electricity from the centralized power supply system. The power of a correctly calculated hybrid solar power plant in combination with a battery pack is enough to completely replace the electricity deficit that can occur due to a power outage. In addition, the project of a hybrid solar power plant may provide for the possibility of using it to cover peak electricity needs.
A hybrid solar power plant is a combination of characteristics of off-grid and grid solar power plant. In conditions of sufficient sunlight and with the correct selection of power, the solar power plant fully ensures the supply of electricity to the property, simultaneously charging the batteries. When the generation is reduced (onset of the evening, cloudy day), the shortage of electricity is covered by connecting the battery, and when it is discharged – from the general power grid.
Hybrid PV power plant elements:
Solar panels are the main component of a solar power plant. They consist of photocells that directly convert the sun’s energy into direct current.
The panel has the following sequence of layers from top to bottom:
- glass plate;
- sealing material;
- sealing material;
- protective film or glass.
On the inside, there is a block of input-output devices with electrical contacts for connection.
Solar Mounting Structures
Solar mounting structures are critical components that ensure the efficiency of a solar power system in both utility and rooftop applications.
Mounting structures for solar batteries can be ground, roof or hinged. For different locations, it is important to choose the right type and take into account various factors.
For example, when mounting system placed on the roof or facade of a house, the weight of the structure is important. When installing on the ground, the geological features of the area, topography and climatic conditions are taken into account.
Their functional purpose is to convert direct current (DC) coming from solar batteries into alternating current. Сan work in parallel with the alternating current source, simultaneously powering the load from the batteries and from the grid, and has a priority function from the solar panels.
The main purpose of a solar batteries is to store energy at the moment of its excess. As a rule, this process takes place during daylight hours, when the sun gives the maximum amount of light, the accumulated amount of energy is spent in the evening.
In addition to accumulating and storing generated energy, batteries perform other important functions:
- overlap peak loads, which are higher than the generation of solar panels;
- reduce dependence on external mains power;
- increase comfort and your safety.
For the correct operation of your system, it is necessary to calculate correctly the consumption of your house and choose the required capacity of the batteries.
Solar Power Plant Monitoring and Control System
It is intended for monitoring the parameters of operation, as well as the serviceability of all components of the SPP. Modern control systems allow remote continuous monitoring of all station parameters, equipment diagnostics, real-time display of all necessary information, and storage of all information about the state and operation of both the solar station itself and individual elements.
Charge Controllers – MPPT
Charge/discharge controllers are devices that not only control the process of charging batteries, but also allow optimizing the energy supply process for consumers when working
The main advantages of hybrid solar power plants:
- maximum flexibility and the possibility of implementing various work scenarios with the priority of both consumption and generation of electricity.
- minimization of electricity consumption from the general power grid and, as a result, a significant reduction in bills for consumed electricity.
- stable power supply of the object during fan, short-term and emergency power outages.
- compensation of the lack of electricity produced by solar batteries, due to the connection of other energy sources.
CGP Solar Energy offers the installation of any type of hybrid solar power plants with the necessary technical characteristics, based on the tasks of a specific client. The specific implementation of the system is determined by the needs of the customer. Depending on the total load power, which must be provided with electricity, the types and amount of solar modules, battery capacity, parameters of charge controllers and inverters are selected.