By zhanqun1 
What is Photovoltaic Power Generation?
Photovoltaic (PV) power generation is a method of converting solar radiation directly into electrical energy using solar cells. It is currently the mainstream technology for solar power generation.
What Components Make Up a Residential Distributed Photovoltaic System?
A residential distributed photovoltaic power generation system consists of several components: a photovoltaic array (which is made up of photovoltaic modules connected in series and parallel), a photovoltaic inverter, a photovoltaic mounting structure, a photovoltaic grid-connected box, a controller (optional), a battery bank (optional), and AC/DC cables.
The core component of a photovoltaic power generation system is the photovoltaic module, which is made up of photovoltaic cells connected in series and parallel and then encapsulated. These modules directly convert solar energy into electrical energy.
The electricity generated by photovoltaic modules is direct current (DC), which can be converted into alternating current (AC) using an inverter for immediate use or fed entirely into the public power grid. From another perspective, the electricity generated by a photovoltaic system can be used immediately as it is produced, or it can be stored in energy storage devices such as batteries and released for use as needed.
What is a Distributed Photovoltaic System?
A distributed photovoltaic system is a type of PV power generation facility constructed near the user’s location，typically connected to a power grid with a voltage level of 35kV or below. The electricity generated is primarily consumed locally. There are two main operational modes for distributed PV systems: self-consumption with surplus power fed into the grid, and full grid connection.
How many types are the Distributed Photovoltaic System? and features?
In the self-consumption mode, the electricity generated by the PV system is primarily used by the power consumer, with any surplus power fed into the grid. In the full grid connection mode, all electricity generated by the PV system is fed into the grid.
Distributed PV systems follow principles such as adapting to local conditions, being clean and efficient, having a decentralized layout, and making use of nearby resources. They aim to fully utilize local solar resources to replace and reduce the consumption of fossil fuels.
What is a Residential Distributed Photovoltaic System?
A residential distributed photovoltaic system refers to a PV system built on structures within the scope of a private residential property, such as a privately-owned house and its attached structures.
What features of a Residential Distributed Photovoltaic System?、
These systems typically have small installation capacities, are connected to the grid at low voltage levels, and feature simplified procedures for filing and grid connection.
How Do Photovoltaic Cells Generate Electricity?
The unique electrical properties of PV cells are achieved by doping certain elements (such as phosphorus or boron) into crystalline silicon, creating a permanent imbalance in the molecular charge of the material and forming a semiconductor with special electrical properties.
When exposed to sunlight, the semiconductor with these special electrical properties generates free charges. These free charges move in a specific direction and accumulate, creating an electromotive force across the two ends of the cell. When these ends are connected by a conductor, an electric current is produced. This phenomenon is known as the “photovoltaic effect.”
What is the realtionship between a distributed photovoltaic system and Distribution Network?
When a distributed photovoltaic system is connected to the distribution network, it introduces power generation within the distribution system itself, alongside electricity consumption. This connection alters the distribution network’s structure from a radial design to a multi-source configuration, leading to changes in the magnitude, direction, and distribution characteristics of short-circuit currents.