FITNESS

FITNESS – Future Intelligent Transmission Network SubStation is the new flagship Network Innovation Competition (NIC) project for SP Energy Networks that will demonstrate sustainable design, deployment and operational control of a multi-vendor digital substation, using the latest protection, control and information technologies. 

Challenge

The challenge addressed in this project is to demonstrate that innovative digital solutions for substations can confidently and reliably be applied in a standard, scalable approach, suitable for future Business-as-Usual (BaU) implementation, delivering improved network performance, capability and flexibility at lower cost.

Scope

FITNESS will ensure interoperability, enhance intelligence and improve visibility in transmission operations and will aim to:

  • Demonstrate that new protection and automation solutions, based on IEC 61850-9-2 process bus standard deployed live for the first time through this project, are applicable for use on the GB transmission network
  • Demonstrate that innovative solutions will be interoperable with existing conventional system to optimise asset replacement
  • Accelerate towards a future modernisation approach with reduced primary plant outage and commissioning time
  • Accelerate towards standardised wide area control implementation leading to robust and less bespoke solutions for increasing asset capacity.

Benefits

The benefits of FITNESS include lower substation build/modernisation cost, reduced outage time and constraints, improved safety, reduced environmental impact, and greater operational flexibility leading to more efficient use of assets. The key benefits after successful completion of project FITNESS by end of RIIO T2 are:

  • 10% reduction of substation new-build and replacement costs, equating to £71m-£107m
  • 4-5% reduction of constraint payments equating to £27m-£80m
  • Carbon savings equating to £13m-34m through reduction in constraints and reduced use of copper in substations

 

Frequently Asked Questions

Frequently Asked Questions

What will FITNESS do?

What will FITNESS do?

  • Demonstrate a multi-vendor fully interoperable digital substation solution
  • Deploying standardised and fully Integrated substation protection, monitoring and control system based on the IEC61850-9-2 standard
  • Reduce environmental impact of substations
  • Enhance substation safety
  • Enable increased flexibility and greater controllability in substations

The solutions enabled by FITNESS will facilitate reduction in substation costs, improve system access and reduce network constraints feeding through to significant benefits to GB customers.
The figure illustrates the FITNESS solution and the conventional approach.

Fitness
Click image to enlarge

Why do we need FITNESS?

Why do we need FITNESS?

Efficient and effective investment in power networks is the key to balancing the energy trilemma of security, cost and sustainability. Networks are handling significant increases in volumes of low carbon energy at the same time as large parts of the existing asset base are approaching the end of life. This is driving a continued increase in requirements for new and modernised substations with more flexible substation design solutions.  Digital substations will improve our ability to optimise use of existing assets while reducing system outage requirements around maintenance and construction and lowering overall substation cost.

Who are involved with the project?

Who are involved with the project?

The project is led by SP Energy Networks and our project partners include GE Grid Solutions, ABB, Synaptec Ltd and the University of Manchester as technology and research providers.

What are the benefits of FITNESS?

What are the benefits of FITNESS?

The benefits of FITNESS include lower substation build/modernisation costs, reduced outage time and constraints, improved safety, reduced environmental impact, and greater operational flexibility leading to more efficient use of assets. The key benefits after successful completion of project FITNESS by end of RIIO T2 are:

 

  • 10% reduction of substation new-build and replacement costs, equating to £71m - £107m
  • 4-5% reduction of constraint payments equating to £27m - £80m
  • Carbon savings equating to £13m-34m through reduction in constraints and reduced use of copper in substations

What is the duration of the project?

What is the duration of the project?

The project duration is 4 years, April 2016 – March 2020, and broadly comprises of three stages – a laboratory testing stage, installation stage and operational stage. 

What novel technologies is FITNESS using?

What novel technologies is FITNESS using?

  • Non-conventional VTs have not been used in GB. The application of NCITs in a full digital substation and their durability when exposed to the harsh environmental conditions, transient currents and voltages and mechanical stresses in a live substation will be proven through FITNESS. Although optical CTs have been trialled in GB in the past, their output has never been integrated in IEC 61850-9-2 format into a complete digital substation solution.
  • Distributed sensor technology which allows current and voltage measurements over long distances (~100km) without the need for auxiliary power and which facilitates multiple measurements to be carried over a single optical fibre is another unproven technology in GB that will also be proved during FITNESS.
  • Harmonics Mapping and Harmonics Source Location - Based on the improved data quality obtainable from NCITs which have a wide dynamic range and a high measurement bandwidth, PQ monitoring equipment will be used to develop harmonics mapping and harmonics source location for the first time in GB.
  • The IEC 61850-9-2 process bus architecture also facilitates the implementation of the novel hot-standby protection scheme. In this scheme, as soon as the failure of a protection IED is detected, the assigned hot-standby protection IED will switch to a protection setting group with the same settings as the failed IED, subscribe to the Sampled Values associated with the failed IED and when required publish trip GOOSE messages to the associated Switchgear Control Unit (SCU). The hot-standby protection IED automatically acts as the replacement protection, without need for an outage or human intervention. This novel process involves technical complexity and needs to be demonstrated before it can be implemented as business-as-usual. 

 

Where is FITNESS being trialled?

Where is FITNESS being trialled?

FITNESS will be demonstrated alongside Wishaw 275kV switchgear replacement planned under the RIIO T1 non-load related business plan. The area of interest has a large wind infeed, variable power and inconsistent inertia. 

The figure illustrates the FITNESS area of interest.

FITNESS 2
Click image to enlarge

 

What does IEC61850?

What is IEC61850?

IEC 61850 is the international standard for Ethernet-based communication in substations. It is more than just a protocol, it is a comprehensive standard designed for utilities, to deliver functionality that is not supported in legacy communication protocols.  IEC 61850 has been defined in cooperation with manufacturers and users to create a high speed, uniform, future-proof basis for the protection, communication and control of substations.  IEC 61850 defines a domain specific data model (data and services) supporting all functions required in substations. These unique characteristics can significantly reduce costs associated with designing, installing, commissioning and operating power systems. IEC 61850 is designed for interoperability and longevity, removing the dependence on one supplier and one generation of IEDs.

Key Benefits

  • Cost effective solution due to reduced copper wiring
  • Flexible programming, allowing relays and new protection functions to be added without affecting physical wiring
  • No external protocol converters are required
  • Easy to upgrade

What is IEC 61850-8-1?

What is IEC 61850-8-1?

IEC 61850-8-1 is the relevant standard for the station bus. It defines the means to generate and present reports which may be subscribed to by other devices and HMIs (Human Machine Interfaces) as well as the way to communicate peer-to-peer. The latter is achieved by the exchange of GOOSE (Generic Object Orientated Substation Event) messages between devices on the LAN (Local Area Network).  IEC 61850-8-1 is intended to provide inter-device operation of a variety of devices to achieve interoperability providing detailed information on how to create and exchange concrete communication messages that implement abstract services and models specified in IEC 61850-7-4, IEC 61850-7-3, and IEC 61850-7-2. 

The mapping allows for data exchange over ISO/IEC 8802-3 Local Area Networks between all kinds of utility devices.  Some of the protocol stacks used within this document are routable.  Therefore the actual communications path may not be restricted to the LAN.  Data exchange consists of real-time monitoring and control data, including measured values, to name just a few.

What is IEC 61850-9-2?

What is IEC 61850-9-2?

This part of IEC 61850 brings digital instrument transformer technology into play, breaking the constraints of conventional CTs and VTs. It is particularly important for the process bus, as it describes how analogue signals such as phase currents and voltages can be exchanged as sampled values.  IEC 61850-9-2 defines the specific communication service mapping (SCSM) for the transmission of sampled values according to the abstract specification in IEC 61850-7-2. The mapping is that of the abstract model on a mixed stack using direct access to an ISO/IEC 8802-3 link for the transmission of the samples in combination with IEC 61850-8-1. This part of IEC 61850 applies to electronic current and voltage transformers, merging units and intelligent electronic devices, for example protection units, bay controllers and meters or sensors.

Each SCSM consists of three parts:

  • A specification of the communication stack being used
  • The mapping of the abstract specifications of IEC 61850-7 series on the real elements of the stack being used, and
  • The implementation specification of functionality, which is not covered by the stack being used

What applications is FITNESS using?

What applications is FITNESS using?

New standards for substation design are applied to introduce new measurement, monitoring, protection and control technologies with digital communications. Multi-vendor interoperability is demonstrated in an offline environment and then in a pilot GB substation field operation trial. In addition, integration and interaction with external control and central monitoring is proven through FITNESS. 

The project will utilise smaller, lighter, safer equipment, with greatly reduced cabling at substations. Standardised secondary monitoring, protection & control equipment will also be added/replaced without planned outage requirements. Data wide area monitoring and control will also be integrated, vastly improving observability and control flexibility and accelerating integration of low carbon technologies.

How does FITNESS relate to VISOR?

How does FITNESS relate to VISOR?

VISOR (Visualisation of Real Time System Dynamics using Enhanced Monitoring) was funded by NIC in 2013 and will showcase the role of an enhanced Wide Area Monitoring System (WAMS) in overcoming the challenges faced by the GB power system as it moves toward a low carbon future. VISOR will create the first WAMS to collate, store, visualise and analyse synchronised measurements in real-time from across all three of the GB TOs.

FITNESS is an accelerator for the monitoring and control technology demonstrated by VISOR.  As part of VISOR, ten Phasor Measurement Units / Waveform Measurement Units needed to be installed on the network, with each installation requiring an outage of 1-2 days. This took almost two years to complete, incurring additional installation costs, a need for planned outages, network constraints and delaying the release of capacity and potential benefits. With roll-out of the FITNESS substation design, all ten of the PMU/WMUs required for VISOR could be installed within a day, subject to site access and engineer availability.

 

Reports & Documents

Latest News

Latest News

Message from Project Manager

We at SPEN are very pleased to be awarded approval from Ofgem to undertake project FITNESS and look forward to overcoming the challenges in this landmark paradigm shift into how we design substations by introducing digital substations that pave the way for the next generation monitoring, protection and control mark.
Over the coming months we look to begin work on the detailed engineering designs ahead of our major interoperability offline testing in 2017 – all of which will be detailed in our project progress report due in mid-2016. Please see our NIC Project Submission Proposal for more details.
Priyanka Mohapatra, SPEN FITNESS Senior Project Manager

For more information about the FITNESS project, contact:
Priyanka Mohapatra
Tel: 0141 614 2789
Email: pmohapatra@spenergynetworks.co.uk

Events

Events

Event Date Location
Stakeholder and Knowledge Dissemination Event 27/10/2016 Glasgow