Can the electricity generated by photovoltaic power generation be used directly
Photovoltaic cells and applications

Can the electricity generated by photovoltaic power generation be used directly? 1 article amazing makes it clear!

Can the electricity generated by photovoltaic power generation be used directly? Photovoltaic panels generate direct current, but we use alternating current. How to convert photovoltaic power into 220V for civilian use?

This requires a device called “inverter”.

The inverter increases the current to the corresponding grid-connected voltage through a step-up transformer. The boosted alternating current flows to the substation through the grid connection point, and the substation converts the direct current into an alternating current that can be used by residents.

For example, the electricity generated by a small collective photovoltaic power generation station of 8kW-400kW enters the 0.4kv power grid after being converted into AC power by a three-phase inverter; the electricity generated by a medium-sized photovoltaic power station of 400kW~20MW mostly enters the 10~35kV power grid, and the electricity generated by a large photovoltaic power generation station of more than 20MW generally enters the power grid of 66kV and above.

Photovoltaic power generation conversion equipment

Therefore, the inverter, as a photovoltaic power generation conversion equipment, plays an important role in the entire power station. In addition, the photovoltaic inverter also has active operation and shutdown functions, maximum power tracking MPPT function, island effect detection and control function, grid detection and grid connection function, and zero (low) voltage ride-through function.

Once the inverter fails, it directly affects the quality of the entire power generation system. Therefore, it is crucial to install and maintain the inverter.

CET built a distributed photovoltaic panoramic intelligent monitoring cloud platform for the project, which monitors the operation of distributed photovoltaic power generation stations’ electrical parameters, photovoltaic power generation components, energy storage facilities, charging piles, load equipment, and other facilities in real time.

Advances in photovoltaic power generation technology have led to lower costs and higher energy yields
Advances in photovoltaic power generation technology have led to lower costs and higher energy yields

Unified monitoring of the real-time operating parameters and alarm information of the inverter, comparative analysis of the efficiency of each inverter, and evaluation of the consistency and stability of the output power and the branch current of the combiner box to evaluate the overall output.

In addition, it also provides a full set of services such as software and hardware equipment supply, installation and construction, commissioning, and system launch involved in platform construction, to achieve full access to the operating parameters of electrical facilities, and real-time monitoring of energy storage facilities, charging piles, meteorological stations, load equipment, etc.

Introduction to CET distributed photovoltaic power generation panoramic intelligent monitoring solution

By configuring a CET-distributed photovoltaic panoramic intelligent monitoring platform, the operation of photovoltaic power generation stations can be displayed, the dual-carbon strategic goals can be achieved, and the cost of electricity consumption can be reduced.

The solution configuration is based on the principle of having a centralized monitoring center with people on duty, and other photovoltaic substations and other equipment distribution areas with few people on duty/unattended, replacing the conventional distributed photovoltaic power generation station on-site monitoring, manual meter reading, and decentralized management mode.

The main methods are server remote data reading, online monitoring, remote control, etc.; to achieve the collection and monitoring, measurement, recording, control, and operation management of the entire platform data. The collected data is compared horizontally and vertically to timely discover abnormal conditions of equipment or systems, and SMS, email, web page prompts, push alarm information, dispatch work orders, follow up on the progress of operation and maintenance work, greatly improve the efficiency of operation and management, and reduce the cost of operation and maintenance.

The collection equipment, communication equipment, and platform software used by the CET distributed photovoltaic panoramic intelligent monitoring platform are all products independently developed and produced by CET China Electric Technology. In terms of platform installation and commissioning, operation and maintenance management, equipment update and upgrade, etc., it has the characteristics of faster deployment and better cost performance.

The efficiency of photovoltaic power generation is significantly influenced by the quality of the solar panels
The efficiency of photovoltaic power generation is significantly influenced by the quality of the solar panels