Jan 2017
Electricity Transmission
Innovative Approach for Transmission Harmonics Issues
NIA_SPT_1610
Complete
Jan 2017
Jan 2019
SP Energy Networks and SP Transmission
Eric Brunger, Elena Chalmers
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Network Innovation Allowance
None
Harmonics
£195,000.00
Five main work packages will be implemented in this project.

WP1: Develop Grid Model

The existing grid models will be extended to add the wind farms to evaluate various operational events. This will allow the harmonic emissions for each windfarm to be estimated and reported upon.

WP2: Harmonic Impedance Scans

The main busbars will be monitored using impedance frequency scans, and the findings will inform simulations run on grid assets to identify both short- and long-term issues and concerns. This will allow a number of filters to be developed and their efficacy evaluated.

WP3: Developing Harmonic Limits

Frequency scans will be carried out at the coupling for each wind farm, and the results compiled into a technical report.

WP4: Detailed Harmonic Filter Designs

The outcomes of WP2 and WP3 will be used to inform the final technical specifications for the harmonic filters for each location. The results of this design will be compiled into a report.

WP5: Performance Review

Over an extended period, the performance of the harmonic filters will be monitored and compared to the simulation results. Any discrepancies will be noted and investigated to identify the issues that may be causing it. If any major discrepancies are found, the filters' paramaters may be redesigned.

WP1: Develop Grid Model

A model of the Grid, incorporting  aggregated wind farm models, and a report detailing the assumptions of this model.

 

WP2: Harmonic Impedance Scans

Technical report to be generated detailing Frequency scan results, and filter solutions.
 


WP3: Developing Harmonic Limits

Technical report detailing the results of frequency scans per wind farm.

WP4: Detailed Harmonic Filter Designs

Technical report detailing the specification for each harmonic filter.


WP5: Performance Review


Final report collecting all progress to date, critical assessment of simulation accuracy with regard to measurements, and final conclusions on the project.

 

The delivery of the above objectives, within budget and within agreed timelines, as is reasonable depending on the knowledge at this stage of the development phase.

The project will be managed within SPEN applying due diligence and best practices where appropiate.

The staged outcomes will include reports and specifications available for other licencees.