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Power Grid Topology Control
Announce Type: new Abstract: Power grids are facing major challenges from growing renewable integration and worsening climate impacts. While flexibility on both the demand and generation sides has been widely explored to address these challenges, network-side flexibility, especially in network topology, remains highly underutilized. Advances in communication, power electronics, and circuit breakers have made network topology increasingly controllable.
EU Calls on Spain to Lower Gas Reliance to Stabilize Power Grid
Electricity power lines near Seville, Spain.
China’s AI Ambitions Depend on Massive Power-Grid Investments
China’s AI Ambitions Depend on Massive Power-Grid Investments Beijing’s $295 billion data center rollout will need to be supported by continued spending on electricity generation and networks. This article is for subscribers only. Welcome to our guide to the commodities driving the global economy.
Impedance Modeling and Stability Analysis of Droop-Controlled Inverter Under Unbalanced Power Grid Operating Conditions
Announce Type: new Abstract: With the growing integration of renewable energy sources into power grids, the risks of oscillation caused by interactions between grid-tied inverters and the grids are becoming increasingly prominent. Although existing studies have made significant progress in inverter modeling and oscillatory stability analysis, most of them do not sufficiently consider complex mirror frequency coupling effects (MFCE) under unbalanced operating conditions, leading to unreliable...
Used Waymo robotaxi batteries become backup storage for power grids
Thousands of electric vehicles in Waymo’s autonomous robotaxi fleet may eventually give up their used batteries for a very different purpose—contributing up to hundreds of megawatt-hours of stationary energy storage to local power grids. That prospect comes from a “strategic supply agreement” announced by Waymo and B2U Storage Solutions on June 4. B2U has been repurposing thousands of used batteries from various electric vehicles by installing them in large stationary energy storage projects.
Used Waymo robotaxi batteries become backup storage for power grids
Thousands of electric vehicles in Waymo’s autonomous robotaxi fleet may eventually give up their used batteries for a very different purpose—contributing up to hundreds of megawatt-hours of stationary energy storage to local power grids. That prospect comes from a “strategic supply agreement” announced by Waymo and B2U Storage Solutions on June 4. B2U has been repurposing thousands of used batteries from various electric vehicles by installing them in large stationary energy storage projects.
Unstable Poles Arising in AC Power Grid Subsystem Representations
new Abstract: Recent small-signal stability studies of AC grids have shifted towards analysing power systems as interconnections of subsystems and leveraging their input-output properties to derive scalable stability certificates. Two subsystem representations appear frequently in the literature: the PQ model, coupling powers to phase angle and voltage magnitude, and the IV model, coupling currents to voltages. In this paper, we derive both models without simplifying the bus or line dynamics...
Utility companies want to pay you to generate power for the electrical grid
HOUSTON — Jeff and Jenny Wright haven’t paid an electric bill for their Houston home in more than a year. Instead, the couple sells their unused power back to the grid in a system that some states hope can offer a way to help meet surging demand for electricity. Americans today pay 40% more, on average, for their electricity than they did just six years ago.
Feedback Linearization and Control of a Grid-Forming Power Converter in an Islanded Microgrid
Announce Type: new Abstract: In an islanded setting, grid-forming inverters must regulate their terminal voltage without support from an external grid, even though the load current depends directly on that voltage. The usual approach is a cascaded proportional--integral (PI) controller, built on a fast inner current loop and a slower outer voltage loop, with feedforward terms used to compensate dq rotational coupling. However, this compensation is only exact at the operating point where the...
Malaysia taps Hong Kong battery expertise to power ambitions for electricity grid
Malaysia taps Hong Kong battery expertise to power ambitions for electricity grid The deal will help tackle solar storage challenges and comes as Malaysia prepares to roll out its first major grid-scale battery procurement The two-year agreement between Mikro MSC Berhad and Hong Kong Cospower Technology Co Ltd (HKCT) makes the company HKCT’s exclusive strategic partner in Malaysia for utility-scale battery energy storage system (BESS) projects. Such battery systems are meant to address one...