Investigations of the constraints relating to penetration of non-synchronous generation (NSG) in future power systems

Mengran Yu, Adam Dysko, Campbell Booth, Andrew Roscoe, Jiebei Zhu, Helge Urdal

Research output: Contribution to conferencePaper

Abstract

According to recent projections, the installed capacity of renewable energy sources and interconnectors will increase significantly in GB power system. With such a large scale of penetration of converter-interfaced renewable energy sources and HVDC interconnectors, the existing power system, which is predominately supplied by synchronous generation presently, will face system operation challenges which are currently attracting the urgent attention of both industry and researchers. Studies have shown that the instantaneous penetration level limit of non-synchronous generation is approximately 65% in the GB power system in context of first swing angular stability and susceptible to a range of factors. There has been a lack of investigation of the individual factors and the degree to which these factors influence the non-synchronous generation limit. While the general term penetration level is often used as an annual average rather than an instantaneous operational value in many papers, it has not been fully defined or a standard definition agreed to date. In this paper, different definitions of penetration level will be introduced and discussed. System operational issues associated with angular stability will be analysed through simulation results. It will also be illustrated that the conventional analysis method for angular stability is not applicable for future power systems with high penetration levels of NSG. Based on a simplified but high-fidelity power system model in Matlab Simulink, the penetration level limit and different factors that have the potential to influence it will be investigated and analysed. It will be shown that the angular stability limits are governed not only by the reduced system inertia, but are also influenced by factors such as system impedance and fault clearing times. Future work will be carried out to explore the penetration level limits based on GB transmission model to give more reliable results as well as to provide guidance for future requirements for generators (in particular from non-synchronous generation) to support system stability.

Conference

ConferenceSixth Protection, Automation and Control World Conference (PAC World 2015)
CountryUnited Kingdom
CityGlasgow
Period29/06/153/07/15

Fingerprint

System stability
Industry

Keywords

  • future energy scenarios
  • power system stability
  • voltage source converter
  • high voltage direct current

Cite this

Yu, M., Dysko, A., Booth, C., Roscoe, A., Zhu, J., & Urdal, H. (2015). Investigations of the constraints relating to penetration of non-synchronous generation (NSG) in future power systems. Paper presented at Sixth Protection, Automation and Control World Conference (PAC World 2015), Glasgow, United Kingdom.
Yu, Mengran ; Dysko, Adam ; Booth, Campbell ; Roscoe, Andrew ; Zhu, Jiebei ; Urdal, Helge. / Investigations of the constraints relating to penetration of non-synchronous generation (NSG) in future power systems. Paper presented at Sixth Protection, Automation and Control World Conference (PAC World 2015), Glasgow, United Kingdom.
@conference{4a195f49fbf9428483a30d30cf2e649d,
title = "Investigations of the constraints relating to penetration of non-synchronous generation (NSG) in future power systems",
abstract = "According to recent projections, the installed capacity of renewable energy sources and interconnectors will increase significantly in GB power system. With such a large scale of penetration of converter-interfaced renewable energy sources and HVDC interconnectors, the existing power system, which is predominately supplied by synchronous generation presently, will face system operation challenges which are currently attracting the urgent attention of both industry and researchers. Studies have shown that the instantaneous penetration level limit of non-synchronous generation is approximately 65{\%} in the GB power system in context of first swing angular stability and susceptible to a range of factors. There has been a lack of investigation of the individual factors and the degree to which these factors influence the non-synchronous generation limit. While the general term penetration level is often used as an annual average rather than an instantaneous operational value in many papers, it has not been fully defined or a standard definition agreed to date. In this paper, different definitions of penetration level will be introduced and discussed. System operational issues associated with angular stability will be analysed through simulation results. It will also be illustrated that the conventional analysis method for angular stability is not applicable for future power systems with high penetration levels of NSG. Based on a simplified but high-fidelity power system model in Matlab Simulink, the penetration level limit and different factors that have the potential to influence it will be investigated and analysed. It will be shown that the angular stability limits are governed not only by the reduced system inertia, but are also influenced by factors such as system impedance and fault clearing times. Future work will be carried out to explore the penetration level limits based on GB transmission model to give more reliable results as well as to provide guidance for future requirements for generators (in particular from non-synchronous generation) to support system stability.",
keywords = "future energy scenarios, power system stability, voltage source converter, high voltage direct current",
author = "Mengran Yu and Adam Dysko and Campbell Booth and Andrew Roscoe and Jiebei Zhu and Helge Urdal",
year = "2015",
month = "7",
day = "2",
language = "English",
note = "Sixth Protection, Automation and Control World Conference (PAC World 2015) ; Conference date: 29-06-2015 Through 03-07-2015",

}

Yu, M, Dysko, A, Booth, C, Roscoe, A, Zhu, J & Urdal, H 2015, 'Investigations of the constraints relating to penetration of non-synchronous generation (NSG) in future power systems' Paper presented at Sixth Protection, Automation and Control World Conference (PAC World 2015), Glasgow, United Kingdom, 29/06/15 - 3/07/15, .

Investigations of the constraints relating to penetration of non-synchronous generation (NSG) in future power systems. / Yu, Mengran; Dysko, Adam; Booth, Campbell; Roscoe, Andrew; Zhu, Jiebei; Urdal, Helge.

2015. Paper presented at Sixth Protection, Automation and Control World Conference (PAC World 2015), Glasgow, United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Investigations of the constraints relating to penetration of non-synchronous generation (NSG) in future power systems

AU - Yu, Mengran

AU - Dysko, Adam

AU - Booth, Campbell

AU - Roscoe, Andrew

AU - Zhu, Jiebei

AU - Urdal, Helge

PY - 2015/7/2

Y1 - 2015/7/2

N2 - According to recent projections, the installed capacity of renewable energy sources and interconnectors will increase significantly in GB power system. With such a large scale of penetration of converter-interfaced renewable energy sources and HVDC interconnectors, the existing power system, which is predominately supplied by synchronous generation presently, will face system operation challenges which are currently attracting the urgent attention of both industry and researchers. Studies have shown that the instantaneous penetration level limit of non-synchronous generation is approximately 65% in the GB power system in context of first swing angular stability and susceptible to a range of factors. There has been a lack of investigation of the individual factors and the degree to which these factors influence the non-synchronous generation limit. While the general term penetration level is often used as an annual average rather than an instantaneous operational value in many papers, it has not been fully defined or a standard definition agreed to date. In this paper, different definitions of penetration level will be introduced and discussed. System operational issues associated with angular stability will be analysed through simulation results. It will also be illustrated that the conventional analysis method for angular stability is not applicable for future power systems with high penetration levels of NSG. Based on a simplified but high-fidelity power system model in Matlab Simulink, the penetration level limit and different factors that have the potential to influence it will be investigated and analysed. It will be shown that the angular stability limits are governed not only by the reduced system inertia, but are also influenced by factors such as system impedance and fault clearing times. Future work will be carried out to explore the penetration level limits based on GB transmission model to give more reliable results as well as to provide guidance for future requirements for generators (in particular from non-synchronous generation) to support system stability.

AB - According to recent projections, the installed capacity of renewable energy sources and interconnectors will increase significantly in GB power system. With such a large scale of penetration of converter-interfaced renewable energy sources and HVDC interconnectors, the existing power system, which is predominately supplied by synchronous generation presently, will face system operation challenges which are currently attracting the urgent attention of both industry and researchers. Studies have shown that the instantaneous penetration level limit of non-synchronous generation is approximately 65% in the GB power system in context of first swing angular stability and susceptible to a range of factors. There has been a lack of investigation of the individual factors and the degree to which these factors influence the non-synchronous generation limit. While the general term penetration level is often used as an annual average rather than an instantaneous operational value in many papers, it has not been fully defined or a standard definition agreed to date. In this paper, different definitions of penetration level will be introduced and discussed. System operational issues associated with angular stability will be analysed through simulation results. It will also be illustrated that the conventional analysis method for angular stability is not applicable for future power systems with high penetration levels of NSG. Based on a simplified but high-fidelity power system model in Matlab Simulink, the penetration level limit and different factors that have the potential to influence it will be investigated and analysed. It will be shown that the angular stability limits are governed not only by the reduced system inertia, but are also influenced by factors such as system impedance and fault clearing times. Future work will be carried out to explore the penetration level limits based on GB transmission model to give more reliable results as well as to provide guidance for future requirements for generators (in particular from non-synchronous generation) to support system stability.

KW - future energy scenarios

KW - power system stability

KW - voltage source converter

KW - high voltage direct current

UR - http://conference.pacw.org/c2015/cms/home-4.html

M3 - Paper

ER -

Yu M, Dysko A, Booth C, Roscoe A, Zhu J, Urdal H. Investigations of the constraints relating to penetration of non-synchronous generation (NSG) in future power systems. 2015. Paper presented at Sixth Protection, Automation and Control World Conference (PAC World 2015), Glasgow, United Kingdom.