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Can a PV inverter communicate with a SCADA system?

In Japan, an existing project tries to develop PV inverters which can communicate with the SCADA system. The role of communication and control system in this project includes PV output control, reactive power control and collecting sales data. The replies from USA summarized the experiences from a number of existing PV projects.

What communication technologies are used for distributed solar PV system integration?

Distributed solar PV systems generally are connected to HAN and NAN/FAN network, which is the so-called “last-mile” communication network. The following sections give an overview of existing and widespread communication technologies used for distributed solar PV system integration.

Can distributed solar PV be integrated into the future smart grid?

In the previous sections, the communication and control system architecture models to enable distributed solar PV to be integrated into the future smart grid environment were reviewed. The existing communication technologies, protocols and current practice for solar PV integration are also introduced.

Which power line communication options are implemented in different solar installations?

Figure 1 shows typical power line communication options implemented in different solar installations. These installations can be divided into communication on DC lines (red) and communication on AC lines (blue).

Are communication and control systems needed for distributed solar PV systems?

The survey results show that deployment of communication and control systems for distributed PV systems is increasing. The public awareness on the communication and control of grid-connected solar PV systems are raising. However the actual development of communication and control system for distributed solar PV systems are still in the early stage.

How do distributed solar PV systems work?

This section focus on the existing concepts for integrating and coordinating the operations of the distributed solar PV systems. Currently, most PV systems are connected to the grid usually with a “fit and forget” principle. PV systems operate autonomously through the advanced solar inverter functions.

How can on-site solar PV & energy storage improve sustainability?

To achieve sustainability goals while meeting the increasing electricity demands of electrification, organizations are pairing on-site solar PV generation with on-site energy storage. These systems, which are considered as “behind-the-meter” (BTM) systems, allow facilities to maximize the benefits of on-site renewable generation.

What are the benefits of an on-site solar PV system?

For the scenario represented in the graph, an on-site solar PV system allows the facility to reduce the amount of electricity drawn from the grid during the middle of the day. Increasing the amount of solar PV production on-site can provide additional cost and emission reductions and resiliency benefits for facilities.

Can on-site storage be used alongside solar PV?

If a utility restricts the exports from a facility to the grid, the use of on-site storage alongside solar PV can provide a solution to avoid costly infrastructure upgrades, thus increasing the feasibility of larger on-site PV installations.

How does a solar PV array affect net load?

Graph showing production from an on-site solar PV array, the charge/discharge of both a battery and thermal storage system, and their effect on the net load. The combination of storage types allows the facility to further reduce excess generation. Net Load (required from grid)

Should solar PV production be reduced on-site?

Increasing the amount of solar PV production on-site can provide additional cost and emission reductions and resiliency benefits for facilities. However, the additional generation that can result from larger systems during peak daylight hours must be exported or managed through curtailment on-site.