Resilient Future Urban Energy Systems Capable of Surviving in Extreme Events (RESCUE)

Lead Research Organisation: University of Strathclyde
Department Name: Electronic and Electrical Engineering

Abstract

The target of operating the GB system with net-zero carbon by 2025, alongside China's ambitious renewable of 35% of energy from renewable sources by 2030, are extremely challenging. From the recent UK power cut event (2019) , several other non-high profile (but still concerning) events that are known to the UK investigators, and the wide-scale blackouts caused by Typhoon Lekima in China, it is clear that new capabilities to manage extreme events and to maximise system resilience are needed urgently. Existing protection and control methods and practices have limitations, and presently islanded or city-centric operational modes are not permitted. The ambition of the project is to enable future urban energy systems, in island or multiple-island mode, with the capability of surviving in extreme conditions purely using local energy and storage resources without compromising system resilience or security of supply.

The novelty of the project is in measurement and enhancement of resilience at an urban scale, and in fundamentally inverting operation, protection and control philosophies to enable migration from systems relying on centralised power stations and a national transmission system, to being capable of surviving purely with local sustainable sources, functioning in a proactive and co-ordinated approach. Key outputs of the project will be methods to audit, model and measure resilience of cities, and methods to determine and evaluate "threat levels" for future urban energy systems and their operation. Additionally, the project will develop control and protection strategies for operation in extreme conditions in islanded/sub-islanded modes, as well as develop enhanced restoration methods.

Planned Impact

The project aims to develop an understanding of the novel schemes, data processes and methodologies which could enable coordination of multi-vector (power, heat and transport) resources to sustain the power system operation during extreme conditions. The scoped research activities are of immediate interest to a wide range of stakeholders, e.g. utility companies, technology suppliers, policy makers, and local authorities.
An advisory committee consisting of experts from utilities, standardisation bodies, policy makers, manufacturers and academics from both China and UK will be created. The advisory committee will provide technical expertise to advise the project direction and provide constructive feedback during the execution of the project plans. Meetings will take place once a year, and occur before project and management meetings so that feedback can be taken into account when assessing next quarter project plans. Furthermore, the committee members, who are all key stakeholders of the project, will also act as the key routes for identifying opportunities, potential new partners and users for implementing the learnings generated from the project. It is anticipated that a key result from the project will be a realistic roadmap for implementing the solutions as developed from the project.
The following list provides proposed member organisations for the independent advisory group. However, these members are subject to funder's approval upon notification of award: GE grid solutions, Ofgem, Energy Systems Catapult, Glasgow City Council, Manchester City Council, ENA, UK100 and China Electric Power Research Institute and China State grid.
A formal project website will be created once the project is funded, where the project objective, key activities, progressive outcomes and suitable data will be openly shared.The website will be connected with a dedicated social media feed to maximise project exposure and impact, and keep PI's of other successfully funded projects up to date to ensure opportunities for collaboration are maximised. It is also planned that newsletters from the project will be issued every three months and the stakeholders will be able to subscribe the newsletter from the website.
Significant efforts will be made by the consortium to publish the project outcomes in top international conferences and journals on electrical energy systems. Some targeted conferences are: IEEE Power and Energy Society General Meeting (annually), CIGRE Paris Sessions (bi-annually), IET conference on Developments in Power System Protection (bi-annually). To maximise the impact, the consortium is also planning to apply to these conferences to host two exclusively focussed workshops during the project period.
The project will hold two wider engagement events, so that stakeholders could have a direct interaction with the team and first-hand knowledge of the project activities and outcomes. A kick-off event and final impact event will be held in the UK to disseminate the objectives, activities and the outcomes of the project. Similar arrangements will also be made at China side, and Chinese project stakeholders will be expected to attend the UK event. Invitations to the wider engagement events will be extended beyond the project partners and will include all UK DNOs, Independent DNOs, multi-vector technology suppliers, BEIS, Energy Systems Catapult, Ofgem, platform/energy management providers and UK100 to represent local government future energy needs. In addition to external project collaborators, the PI's of other successfully funded projects will be expected to attend these events. In return, the consortium has budgeted for a £15k flexible fund (£5k per year) which will be utilised to engage with the other successfully funded projects as we have proposed them to engage with our programme of work.
Additional to this, annual dissemination events will take place via PNDC with core members such as SPEN, SSEN, UKPN, CISCO and Vodafone.

Publications

10 25 50
 
Description A benchmark model of UK Future Urban Energy Systems for real-time tests (suitable for validation of prototype systems)
• Predefined Objective: Fully investigate the key components and structures for future UK urban energy systems, then use existing and develop new modelling tools to create benchmark models for resilience of FUES.
• Progress:
? System requirements to test the major challenges for FUES in terms of monitoring, protection, control and restoration (four main components of RESCUE project) are identified.
? A benchmark system is formed providing a suitable platform to test all those challenges.
? The system is being modelled in RSCAD to provide the facility of real-time testing.

WP 4.2: Characterising different DERs in supporting FUES operation
• Predefined Objective: A technical report characterising the roles of different DERs and their capability in supporting FUES operation during normal and extreme conditions (both connected to the grid and during islanded/sub-islanded operation) with case studies.
• Progress:
? A technique is developed for generalized representation of any converter-interfaced DER.
? The generalized representation comprises of a fixed internal voltage with a variable source impedance, which is a function of the control operation embedded in the particular DER. Effectiveness of such a representation in different monitoring, control and protection applications are already observed in different literature.


WP 4.3: Coordinated control to maximise resilience
• Predefined Objective: Control algorithms for multiple energy resource coordination and effective control of frequency and voltage and to maximise resilience in in both normal and extreme (islanded/sub-islanded) modes, with demonstrations via case studies.
• Progress:
? Few issues present in a FUES requiring coordinated control of different sources are identified from the available literature.


Contribution to other work packages, which is not allotted to University of Strathclyde
WP 3: Effective Protection and Fault Location Techniques for Smart Urban Systems
• Predefined Objective: Development of novel protection and fault locations schemes for FUES when operating in extreme mode, which can intelligently adapt to changes in system operational mode, capable of catering for the diverse characteristics of DERs, storage and novel loads (heat, EV), and offering effective performance during extreme conditions.
• Progress:
? An adaptive distance relaying method is proposed for multi-terminal lines connecting renewable sources. The method computes the sequence impedances and equivalent internal voltage at the infeed end during prefault and applies to compute correct fault distance. Accurate performance of the proposed method is demonstrated for a three-terminal line for different fault types and fault resistances. The method is also tested in the presence of different RESs complied with different grid codes, and with variation in RES output.
Exploitation Route Other academics and researchers may benefit from the initial modelling, findings and publications, but due to a delayed start, the project will deliver more over the following 12 months in line with the proposed outputs.
Sectors Energy

 
Description Flexible Fund 2: Resilience (3) A real time resilience assessment framework for integrated energy systems in future UK cities
Amount £96,000 (GBP)
Organisation Engineering and Physical Sciences Research Council (EPSRC) 
Department Supergen
Sector Public
Country United Kingdom
Start 02/2021 
End 02/2022
 
Description Ofgem - Strategic Innovation Fund: SCADENT - SuperConductor Applications for Dense Energy Transmission
Amount £148,437 (GBP)
Organisation Ofgem Office of Gas and Electricity Markets 
Sector Public
Country United Kingdom
Start 04/2022 
End 04/2023
 
Description Protection solutions for future power networks, SSEN, £128k
Amount £128,000 (GBP)
Organisation Scottish and Southern Energy (SSE) 
Sector Private
Country United Kingdom
Start 10/2021 
End 04/2023
 
Description Strategic Innovation Fund - INCENTIVE (addressing stability issue with increased wind generation),
Amount £136,002 (GBP)
Organisation Ofgem Office of Gas and Electricity Markets 
Sector Public
Country United Kingdom
Start 04/2022 
End 04/2023
 
Description Strategic Innovation Fund: round 1 Discovery Phase
Amount £143,480 (GBP)
Funding ID EN-twin-e - Development of a digital twin of the electricity distribution system to aid in decision making when managing and balancing assets. 
Organisation Ofgem Office of Gas and Electricity Markets 
Sector Public
Country United Kingdom
Start 04/2023 
End 04/2023
 
Description UKAEA, Fusion microgrid PhD studentship
Amount £30,000 (GBP)
Organisation UK Atomic Energy Authority 
Sector Public
Country United Kingdom
Start 12/2021 
End 11/2026
 
Description C Booth invited to be reviewer/interview panellist/co-chair for EPSRC/DST Network Plus - Resilient Solutions for Future UK Systems call in February 2022. 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Professional Practitioners
Results and Impact EPSRC review, panellist and interview chair.
Year(s) Of Engagement Activity 2022
URL http://www.ukri.org/opportunity/build-a-network-to-enable-resilient-solutions-for-future-uk-systems/
 
Description Invited Speaker, "Impact of Converters' Control on Power System Protection and Potential Mitigating Solutions" 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Industry/Business
Results and Impact Invited talk at the Developments in Power System Protection conference, on research work associated with protection of future renewable-dense power systems.
Year(s) Of Engagement Activity 2022
URL https://dpsp.theiet.org/
 
Description nvited speaker, "Demonstration of Capability of Grid Forming Converters using Energy Storage Systems", GB Grid Forming Best Practise Guidance Group, National Grid ESO, September 2021 
Form Of Engagement Activity A formal working group, expert panel or dialogue
Part Of Official Scheme? No
Geographic Reach National
Primary Audience Professional Practitioners
Results and Impact GB Grid Forming Best Practise Guidance Group, National Grid ESO, September 2021
Year(s) Of Engagement Activity 2021