Can battery energy storage systems support modern grids?

This case study delves into the innovative role of Battery Energy Storage Systems (BESS) in stabilising and supporting modern grids, with a particular focus on a large-scale BESS project undertaken by Tata Consulting Engineers (TCE). The Need for Grid-Connected BESS

What is a grid-forming inverter (GFM)?

An advanced grid-forming inverter (GFM) system is now operational at Hitachi Industrial Equipment Systems’ Narashino Works plant in Japan. The installation is part of a larger push to enhance grid stability as variable renewable energy sources replace conventional fossil-fuel generation.

What is a grid-forming inverter?

Grid-forming inverters are an emerging technology that allows solar and other inverter-based energy sources to restart the grid independently.” Increasing grid penetrations of inverter-based renewables using traditional grid-following (GFL) controls reduces grid inertia and can result in system stability problems.

Do emerging grid-forming inverters improve dynamic system stability?

Emerging grid-forming (GFM) inverters damp out grid frequency swings at high penetrations of renewables and have shown to significantly improve dynamic system stability compared to GFL controls.1,2,3 This white paper describes the capabilities and solutions ofered by AES’ grid-forming inverters.

Can inverters operate in GFM mode while grid connected?

Using inverters operating in GFM mode while grid connected has been demonstrated to enhance system stability with high penetrations of renewable resources. AES can provide direct access to the grid operator to change control setpoints for the regulation service as needed and at any time.

What is a microgrid inverter?

Figure 1: Overview of microgrids. Toshiba developed a prototype GFM inverter that provides synthetic inertia and suppresses the fluctuations of the grid frequency in distribution systems even when fluctuations in power supply or power demand occur (Figure 2) and demonstrated its effectiveness.