Multi-time Scale Coordination of Distributed Energy Resources in Isolated Power Systems

2016 ◽  
pp. 1-1 ◽  
Author(s):  
Ebony Mayhorn ◽  
Le Xie ◽  
Karen Butler-Purry
Keyword(s):  
Power Systems ◽  
Time Scale ◽  
Energy Resources ◽  
Distributed Energy Resources ◽  
Distributed Energy

scholarly journals Cybersecurity Considerations for Grid-Connected Batteries with Hardware Demonstrations

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3067
Author(s):  
Megan Culler ◽  
Hannah Burroughs
Keyword(s):  
Power Systems ◽  
Network Connectivity ◽  
Energy Resources ◽  
System Stability ◽  
Distributed Energy Resources ◽  
Distributed Energy ◽  
Defense Strategies ◽  
Storage Devices ◽  
Attack Surface ◽  
Area Of Concern

The share of renewable and distributed energy resources (DERs), like wind turbines, solar photovoltaics and grid-connected batteries, interconnected to the electric grid is rapidly increasing due to reduced costs, rising efficiency, and regulatory requirements aimed at incentivizing a lower-carbon electricity system. These distributed energy resources differ from traditional generation in many ways including the use of many smaller devices connected primarily (but not exclusively) to the distribution network, rather than few larger devices connected to the transmission network. DERs being installed today often include modern communication hardware like cellular modems and WiFi connectivity and, in addition, the inverters used to connect these resources to the grid are gaining increasingly complex capabilities, like providing voltage and frequency support or supporting microgrids. To perform these new functions safely, communications to the device and more complex controls are required. The distributed nature of DER devices combined with their network connectivity and complex controls interfaces present a larger potential attack surface for adversaries looking to create instability in power systems. To address this area of concern, the steps of a cyberattack on DERs have been studied, including the security of industrial protocols, the misuse of the DER interface, and the physical impacts. These different steps have not previously been tied together in practice and not specifically studied for grid-connected storage devices. In this work, we focus on grid-connected batteries. We explore the potential impacts of a cyberattack on a battery to power system stability, to the battery hardware, and on economics for various stakeholders. We then use real hardware to demonstrate end-to-end attack paths exist when security features are disabled or misconfigured. Our experimental focus is on control interface security and protocol security, with the initial assumption that an adversary has gained access to the network to which the device is connected. We provide real examples of the effectiveness of certain defenses. This work can be used to help utilities and other grid-connected battery owners and operators evaluate the severity of different threats and the effectiveness of defense strategies so they can effectively deploy and protect grid-connected storage devices.

scholarly journals Methods for Aggregation and Remuneration of Distributed Energy Resources

2018 ◽  
Vol 8 (8) ◽  
pp. 1283 ◽  
Author(s):  
Pedro Faria ◽  
João Spínola ◽  
Zita Vale
Keyword(s):  
Power Systems ◽  
Energy Resource ◽  
Energy Resources ◽  
Distributed Energy Resources ◽  
Virtual Power ◽  
Distributed Energy ◽  
Distributed Energy Resource ◽  
Technical Operation ◽  
Made In

Distributed energy resource integration in power systems has advantages and challenges in both the economic and the technical operation of the system. An aggregator, as in the case of a Virtual Power Player, is essential in order to support the operation of these small size resources. Innovative approaches capable of supporting the decisions made in terms of resource scheduling, aggregation and remuneration are needed. The present paper addresses a methodology capable of managing resources through the activities of an aggregator, providing different choices of aggregation and remuneration strategies. The methodology is validated in a case study regarding a 21-bus network, composed of 20 consumers and 26 producers.

Transformation of the Grid: The Impact of Distributed Energy Resources on Bulk Power Systems

2019 ◽  
Vol 17 (6) ◽  
pp. 35-45 ◽  
Author(s):  
Ryan Quint ◽  
Naomi Stringer ◽  
Lisa Dangelmaier ◽  
Irina Green ◽  
David Edelson ◽  
...  
Keyword(s):  
Power Systems ◽  
Energy Resources ◽  
Distributed Energy Resources ◽  
Distributed Energy ◽  
Bulk Power ◽  
The Impact
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